.page-faq {
  --faq-rail-w: 264px;
  --faq-hair: rgba(42, 59, 85, 0.72);
  --faq-radius: 14px;
  display: block;
  position: relative;
  background:
    radial-gradient(120% 68% at 100% 0%, rgba(39, 232, 211, 0.08), transparent 62%),
    radial-gradient(90% 58% at 0 14%, rgba(255, 63, 164, 0.07), transparent 60%);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 5vw, 62px) 0 clamp(26px, 4vw, 52px);
  border-bottom: 1px solid var(--mg-line-soft);
}
.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -34%;
  right: -14%;
  width: min(820px, 88%);
  height: 132%;
  background: linear-gradient(142deg, rgba(39, 232, 211, 0.2) 0%, rgba(255, 63, 164, 0.13) 46%, rgba(255, 200, 87, 0.08) 74%, transparent 88%);
  clip-path: polygon(22% 0%, 100% 0%, 100% 100%, 0% 86%);
  pointer-events: none;
}
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: -8%;
  bottom: -44%;
  width: min(560px, 66%);
  height: 90%;
  background: linear-gradient(120deg, rgba(255, 200, 87, 0.12), transparent 72%);
  clip-path: polygon(0 34%, 100% 0, 88% 100%, 0 100%);
  pointer-events: none;
}
.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
}
.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  max-width: 20em;
  font-family: var(--mg-font-display);
  font-weight: 800;
  font-size: clamp(29px, 5.2vw, 56px);
  line-height: 1.14;
  letter-spacing: -0.012em;
  color: var(--mg-ink);
}
.page-faq .faq-hero .mg-lede {
  margin: 18px 0 0;
  max-width: 64ch;
  font-size: clamp(15px, 1.15vw, 17px);
  line-height: 1.78;
  color: var(--mg-mist);
}

/* 搜索 */
.page-faq .faq-search {
  margin-top: 26px;
  max-width: 620px;
}
.page-faq .faq-search__label {
  display: block;
  margin-bottom: 10px;
  font-family: var(--mg-font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--mg-cyan);
}
.page-faq .faq-search__field {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 16px;
  border: 1px solid var(--mg-line);
  border-radius: 12px;
  background: rgba(21, 31, 51, 0.82);
  box-shadow: inset 0 1px 0 rgba(244, 241, 232, 0.04), 0 20px 50px -38px rgba(39, 232, 211, 0.7);
  transition: border-color 0.22s ease, box-shadow 0.22s ease;
}
.page-faq .faq-search__field:focus-within {
  border-color: rgba(39, 232, 211, 0.6);
  box-shadow: 0 0 0 3px rgba(39, 232, 211, 0.12);
}
.page-faq .faq-search__icon {
  position: relative;
  flex: 0 0 14px;
  width: 14px;
  height: 14px;
  border: 1.5px solid var(--mg-cyan);
  border-radius: 50%;
}
.page-faq .faq-search__icon::after {
  content: "";
  position: absolute;
  right: -5px;
  bottom: -4px;
  width: 7px;
  height: 1.5px;
  background: var(--mg-cyan);
  transform: rotate(45deg);
}
.page-faq .faq-search__input {
  flex: 1 1 auto;
  width: 100%;
  min-width: 0;
  padding: 15px 0;
  border: 0;
  background: transparent;
  color: var(--mg-ink);
  font-family: var(--mg-font-body);
  font-size: 15.5px;
  outline: none;
}
.page-faq .faq-search__input::placeholder {
  color: rgba(154, 169, 190, 0.72);
}
.page-faq .faq-search__hint {
  margin: 10px 0 0;
  font-size: 13px;
  color: var(--mg-mist);
}

/* 首屏数据点 */
.page-faq .faq-hero__facts {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}
.page-faq .faq-hero__facts li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding-left: 14px;
  border-left: 2px solid var(--mg-line);
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--mg-mist);
}
.page-faq .faq-hero__facts .is-num {
  font-family: var(--mg-font-mono);
  font-size: 15px;
  color: var(--mg-cyan);
}

/* ---------- 主体布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  padding-top: clamp(28px, 4vw, 54px);
  padding-bottom: clamp(48px, 7vw, 96px);
}

/* 分类轨道 */
.page-faq .faq-rail {
  border: 1px solid var(--mg-line);
  border-radius: var(--faq-radius);
  background: linear-gradient(180deg, rgba(21, 31, 51, 0.92), rgba(21, 31, 51, 0.62));
  min-width: 0;
}
.page-faq .faq-rail__title {
  margin: 0;
  padding: 14px 16px;
  border-bottom: 1px solid var(--faq-hair);
  font-family: var(--mg-font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mg-cyan);
}
.page-faq .faq-rail__nav {
  display: flex;
  gap: 8px;
  padding: 12px;
  overflow-x: auto;
  scrollbar-width: thin;
}
.page-faq .faq-rail__link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border: 1px solid var(--mg-line);
  border-radius: 999px;
  color: var(--mg-ink);
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 0.2s ease, background-color 0.2s ease, transform 0.2s ease;
}
.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  border-color: rgba(39, 232, 211, 0.55);
  background: rgba(39, 232, 211, 0.08);
  transform: translateY(-1px);
  outline: none;
}
.page-faq .faq-rail__num {
  font-family: var(--mg-font-mono);
  font-size: 12px;
  color: var(--mg-cyan);
}
.page-faq .faq-rail__count {
  padding-left: 8px;
  border-left: 1px solid var(--mg-line);
  font-family: var(--mg-font-mono);
  font-size: 11.5px;
  color: var(--mg-mist);
}
.page-faq .faq-rail__note {
  display: none;
}

/* 问答正文区 */
.page-faq .faq-body {
  display: grid;
  gap: clamp(34px, 5vw, 62px);
  min-width: 0;
}
.page-faq .faq-section {
  position: relative;
  overflow: hidden;
  scroll-margin-top: calc(var(--mg-topbar-h) + 24px);
}
.page-faq .faq-section::after {
  content: attr(data-idx);
  position: absolute;
  top: -14px;
  right: -4px;
  font-family: var(--mg-font-mono);
  font-size: clamp(52px, 9vw, 96px);
  line-height: 1;
  color: rgba(154, 169, 190, 0.07);
  pointer-events: none;
}
.page-faq .faq-section__head {
  position: relative;
  z-index: 1;
  max-width: 74ch;
  padding-left: 16px;
  border-left: 3px solid var(--mg-cyan);
}
.page-faq .faq-section--install .faq-section__head { border-left-color: var(--mg-cyan); }
.page-faq .faq-section--gift .faq-section__head { border-left-color: var(--mg-amber); }
.page-faq .faq-section--server .faq-section__head { border-left-color: var(--mg-magenta); }
.page-faq .faq-section--size .faq-section__head { border-left-color: var(--mg-moss); }
.page-faq .faq-section--contact .faq-section__head { border-left-color: var(--mg-clay); }
.page-faq .faq-section__head h2 {
  margin: 0;
  font-family: var(--mg-font-display);
  font-weight: 800;
  font-size: clamp(22px, 2.5vw, 32px);
  line-height: 1.26;
  letter-spacing: -0.008em;
  color: var(--mg-ink);
}
.page-faq .faq-section__head p {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.74;
  color: var(--mg-mist);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-list {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 10px;
  margin-top: 22px;
}
.page-faq .faq-q {
  border: 1px solid var(--mg-line);
  border-radius: 12px;
  background: rgba(21, 31, 51, 0.55);
  transition: border-color 0.22s ease, background-color 0.22s ease, box-shadow 0.22s ease;
}
.page-faq .faq-q:hover {
  border-color: rgba(154, 169, 190, 0.42);
}
.page-faq .faq-q[open] {
  border-color: rgba(39, 232, 211, 0.42);
  background: rgba(21, 31, 51, 0.94);
  box-shadow: 0 28px 62px -50px rgba(39, 232, 211, 0.9);
}
.page-faq .faq-section--gift .faq-q[open] { border-color: rgba(255, 200, 87, 0.45); box-shadow: 0 28px 62px -50px rgba(255, 200, 87, 0.9); }
.page-faq .faq-section--server .faq-q[open] { border-color: rgba(255, 63, 164, 0.42); box-shadow: 0 28px 62px -50px rgba(255, 63, 164, 0.85); }
.page-faq .faq-section--size .faq-q[open] { border-color: rgba(120, 144, 106, 0.55); box-shadow: 0 28px 62px -50px rgba(120, 144, 106, 0.85); }
.page-faq .faq-section--contact .faq-q[open] { border-color: rgba(196, 107, 77, 0.5); box-shadow: 0 28px 62px -50px rgba(196, 107, 77, 0.85); }

.page-faq .faq-q[hidden],
.page-faq .faq-section[hidden] {
  display: none;
}

.page-faq .faq-q__summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  color: var(--mg-ink);
  font-size: 15.5px;
  line-height: 1.56;
  transition: color 0.2s ease;
}
.page-faq .faq-q__summary::-webkit-details-marker { display: none; }
.page-faq .faq-q__summary::marker { content: ""; }
.page-faq .faq-q__summary:hover .faq-q__text { color: var(--mg-cyan); }
.page-faq .faq-q__idx {
  flex: 0 0 auto;
  padding-top: 4px;
  font-family: var(--mg-font-mono);
  font-size: 12px;
  color: var(--mg-cyan);
}
.page-faq .faq-q__text {
  flex: 1 1 auto;
  min-width: 0;
  font-weight: 600;
  transition: color 0.2s ease;
}
.page-faq .faq-q__marker {
  position: relative;
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin-top: 5px;
}
.page-faq .faq-q__marker::before,
.page-faq .faq-q__marker::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--mg-cyan);
  transform: translate(-50%, -50%);
  transition: transform 0.24s ease, opacity 0.24s ease, background-color 0.24s ease;
}
.page-faq .faq-q__marker::before { width: 12px; height: 1.5px; }
.page-faq .faq-q__marker::after { width: 1.5px; height: 12px; }
.page-faq .faq-q[open] .faq-q__marker::before { background: var(--mg-amber); }
.page-faq .faq-q[open] .faq-q__marker::after { transform: translate(-50%, -50%) scaleY(0); opacity: 0; }

.page-faq .faq-q__body {
  padding: 14px 18px 18px 42px;
  border-top: 1px solid var(--faq-hair);
  font-size: 14.8px;
  line-height: 1.78;
  color: var(--mg-mist);
}
.page-faq .faq-q__body p { margin: 0; }
.page-faq .faq-q__body p + p { margin-top: 10px; }
.page-faq .faq-q__body a {
  color: var(--mg-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(39, 232, 211, 0.4);
}
.page-faq .faq-q__body a:hover { border-bottom-color: var(--mg-cyan); }
.page-faq .faq-mono {
  font-family: var(--mg-font-mono);
  color: var(--mg-ink);
}
.page-faq .faq-tip {
  margin-top: 12px;
  padding: 10px 14px;
  border-left: 2px solid var(--mg-moss);
  border-radius: 0 8px 8px 0;
  background: rgba(120, 144, 106, 0.1);
  font-size: 13.6px;
  line-height: 1.7;
  color: rgba(244, 241, 232, 0.86);
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  position: relative;
  z-index: 1;
  margin: 26px 0 0;
  border: 1px solid var(--mg-line);
  border-radius: var(--faq-radius);
  overflow: hidden;
  background: rgba(7, 13, 31, 0.6);
}
.page-faq .faq-figure--install { box-shadow: inset 0 0 0 1px rgba(39, 232, 211, 0.18); }
.page-faq .faq-figure--gift { box-shadow: inset 0 0 0 1px rgba(255, 200, 87, 0.16); }
.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}
.page-faq .faq-figure figcaption {
  padding: 12px 16px;
  border-top: 1px solid var(--faq-hair);
  font-size: 13px;
  line-height: 1.65;
  color: var(--mg-mist);
}

/* ---------- 联系卡片 ---------- */
.page-faq .faq-contact-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 24px;
}
.page-faq .faq-contact-card {
  padding: 18px;
  border: 1px solid var(--mg-line);
  border-radius: 12px;
  background: linear-gradient(160deg, rgba(21, 31, 51, 0.94), rgba(7, 13, 31, 0.74));
}
.page-faq .faq-contact-card__label {
  margin: 0 0 10px;
  font-family: var(--mg-font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--mg-amber);
}
.page-faq .faq-contact-card__value {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.6;
  color: var(--mg-ink);
  word-break: break-word;
}
.page-faq .faq-contact-card__value--mono {
  font-family: var(--mg-font-mono);
  letter-spacing: 0.01em;
}
.page-faq .faq-contact-card__desc {
  margin: 10px 0 0;
  font-size: 13.2px;
  line-height: 1.68;
  color: var(--mg-mist);
}
.page-faq .faq-contact-foot {
  position: relative;
  z-index: 1;
  margin: 18px 0 0;
  font-size: 14.4px;
  line-height: 1.7;
  color: var(--mg-mist);
}
.page-faq .faq-contact-foot a {
  color: var(--mg-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(39, 232, 211, 0.4);
}
.page-faq .faq-contact-foot a:hover { border-bottom-color: var(--mg-cyan); }

/* ---------- 显现动效 ---------- */
.page-faq .mg-reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.page-faq .mg-reveal.is-visible,
.page-faq .faq-section.is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-hero__facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
    align-items: start;
  }
  .page-faq .faq-hero__facts li {
    flex-direction: column;
    gap: 4px;
  }
  .page-faq .faq-q__body {
    padding-left: 52px;
  }
  .page-faq .faq-contact-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 800px) {
  .page-faq .faq-search__field {
    padding: 0 20px;
  }
  .page-faq .faq-list {
    gap: 12px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: clamp(32px, 4vw, 68px);
    align-items: start;
  }
  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--mg-topbar-h) + 20px);
    background: linear-gradient(180deg, rgba(21, 31, 51, 0.96), rgba(21, 31, 51, 0.7));
  }
  .page-faq .faq-rail__nav {
    flex-direction: column;
    gap: 4px;
    padding: 10px;
    overflow: visible;
  }
  .page-faq .faq-rail__link {
    width: 100%;
    padding: 11px 12px;
    border-color: transparent;
    border-radius: 9px;
    white-space: normal;
  }
  .page-faq .faq-rail__link:hover,
  .page-faq .faq-rail__link:focus-visible {
    border-color: rgba(39, 232, 211, 0.35);
    background: rgba(39, 232, 211, 0.07);
    transform: none;
  }
  .page-faq .faq-rail__count {
    margin-left: auto;
  }
  .page-faq .faq-rail__note {
    display: block;
    padding: 14px 16px 18px;
    border-top: 1px solid var(--faq-hair);
  }
  .page-faq .faq-rail__note p {
    margin: 0 0 12px;
    font-size: 13px;
    line-height: 1.72;
    color: var(--mg-mist);
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-body {
    gap: clamp(46px, 4.6vw, 74px);
  }
  .page-faq .faq-q__summary {
    padding: 18px 22px;
    font-size: 16px;
  }
  .page-faq .faq-q__body {
    padding: 16px 22px 20px 56px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .mg-reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .page-faq .faq-rail__link,
  .page-faq .faq-q,
  .page-faq .faq-q__marker::before,
  .page-faq .faq-q__marker::after {
    transition: none;
  }
}