/* ===== 3499 开服 · 使用指南（/guide/）页面专属样式 ===== */

.page-faq img {
  max-width: 100%;
  height: auto;
}

.page-faq .media-frame {
  margin: 0;
}

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

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding-block: clamp(18px, 3.5vw, 34px) clamp(34px, 6vw, 62px);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 30px;
  align-items: end;
}

.page-faq .faq-hero h1 {
  margin: 10px 0 0;
  font-size: clamp(27px, 5.4vw, 52px);
  line-height: 1.14;
  letter-spacing: 0.02em;
  text-wrap: balance;
}

.page-faq .faq-hero h1::after {
  content: "";
  display: block;
  width: 78px;
  height: 3px;
  margin-top: 18px;
  background: linear-gradient(90deg, var(--cyan), var(--red));
}

.page-faq .faq-hero .lede {
  margin: 16px 0 0;
  max-width: 58ch;
  font-size: clamp(14px, 1.5vw, 16px);
  line-height: 1.8;
}

.page-faq .faq-hero__meta {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  gap: 16px 20px;
  grid-template-columns: repeat(auto-fit, minmax(148px, 1fr));
}

.page-faq .faq-hero__meta li {
  padding-left: 13px;
  border-left: 2px solid var(--cyan);
}

.page-faq .faq-hero__meta li:nth-child(2) {
  border-left-color: var(--amber);
}

.page-faq .faq-hero__meta li:nth-child(3) {
  border-left-color: var(--red);
}

.page-faq .faq-hero__num {
  display: block;
  font-family: var(--font-num);
  font-size: clamp(24px, 3.4vw, 32px);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-hero__meta li:nth-child(2) .faq-hero__num {
  color: var(--amber);
}

.page-faq .faq-hero__meta li:nth-child(3) .faq-hero__num {
  color: var(--red);
}

.page-faq .faq-hero__label {
  display: block;
  margin-top: 7px;
  font-size: 12px;
  line-height: 1.55;
  color: var(--muted);
}

.page-faq .faq-hero__media {
  position: relative;
}

/* ---------- 主体布局 ---------- */
.page-faq .faq-body {
  padding-block: clamp(22px, 4vw, 44px) clamp(46px, 8vw, 92px);
}

.page-faq .faq-layout {
  display: grid;
  gap: 26px;
  align-items: start;
}

.page-faq .faq-rail {
  display: grid;
  gap: 12px;
  min-width: 0;
}

.page-faq .faq-rail__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-groups {
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

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

.page-faq .faq-groups > li {
  flex: none;
}

.page-faq .faq-chip {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 15px;
  border: 1px solid var(--line);
  background: var(--ink-1);
  color: var(--text);
  font-size: 13px;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
  clip-path: var(--shape-cut);
  transition: border-color var(--speed) ease, color var(--speed) ease, background-color var(--speed) ease;
}

.page-faq .faq-chip:hover,
.page-faq .faq-chip:focus-visible {
  border-color: var(--cyan-soft);
  color: var(--cyan-soft);
  background: rgba(0, 229, 255, 0.07);
  outline: none;
}

.page-faq .faq-chip__num {
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.page-faq .faq-chip:hover .faq-chip__num,
.page-faq .faq-chip:focus-visible .faq-chip__num {
  color: var(--cyan);
}

.page-faq .faq-chip--amber:hover,
.page-faq .faq-chip--amber:focus-visible {
  border-color: var(--amber);
  color: var(--amber);
  background: rgba(255, 209, 102, 0.08);
}

.page-faq .faq-chip--amber:hover .faq-chip__num,
.page-faq .faq-chip--amber:focus-visible .faq-chip__num {
  color: var(--amber);
}

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

/* ---------- 答案流 ---------- */
.page-faq .faq-stream {
  display: grid;
  gap: 0;
  min-width: 0;
}

.page-faq .faq-group {
  padding-block: clamp(28px, 4vw, 46px);
  border-top: 1px solid var(--line);
  scroll-margin-top: calc(var(--nav-h) + 24px);
}

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

.page-faq .faq-group__head {
  display: grid;
  gap: 8px;
  margin-bottom: 22px;
}

.page-faq .faq-group__num {
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--red);
}

.page-faq .faq-group--archive .faq-group__num {
  color: var(--amber);
}

.page-faq .faq-group__head h2 {
  margin: 0;
  font-size: clamp(21px, 3vw, 30px);
  line-height: 1.24;
  letter-spacing: 0.01em;
}

.page-faq .faq-group__desc {
  margin: 0;
  max-width: 56ch;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 上手三步 ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
}

.page-faq .faq-step {
  position: relative;
  padding: 14px 0 14px 46px;
  border-bottom: 1px dashed var(--line);
}

.page-faq .faq-step:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-faq .faq-step__num {
  position: absolute;
  left: 0;
  top: 15px;
  font-family: var(--font-num);
  font-size: 21px;
  line-height: 1;
  letter-spacing: 0.04em;
  color: var(--cyan);
  opacity: 0.9;
}

.page-faq .faq-step h3 {
  margin: 0 0 7px;
  font-size: 16.5px;
  line-height: 1.4;
}

.page-faq .faq-step p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .faq-step p a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-faq .faq-step p a:hover {
  color: var(--cyan-soft);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: 15px 2px 15px 0;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 500;
  line-height: 1.55;
  color: var(--text);
  transition: color var(--speed) ease;
}

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

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

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

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .faq-item__arrow {
  flex: none;
  margin-top: 3px;
  color: var(--cyan);
  transition: transform var(--speed) ease, color var(--speed) ease;
}

.page-faq .faq-item[open] > .faq-item__q {
  color: var(--cyan);
}

.page-faq .faq-item[open] .faq-item__arrow {
  transform: rotate(180deg);
}

.page-faq .faq-item__a {
  padding: 0 44px 18px 0;
  max-width: 62ch;
  font-size: 13.5px;
  line-height: 1.82;
  color: var(--muted);
}

.page-faq .faq-item__a p {
  margin: 0 0 8px;
}

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

.page-faq .faq-item__a a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

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

.page-faq .faq-item[open] .faq-item__a {
  animation: faq-slip var(--speed) ease-out both;
}

@keyframes faq-slip {
  from {
    opacity: 0;
    transform: translateY(-5px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- 资料章节的分栏 ---------- */
.page-faq .faq-split {
  display: grid;
  gap: 26px;
}

.page-faq .faq-figure {
  margin: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-figure__cap {
  padding-left: 12px;
  border-left: 2px solid var(--amber);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 收尾面板 ---------- */
.page-faq .faq-escape {
  margin-top: clamp(28px, 5vw, 52px);
}

.page-faq .faq-escape__panel {
  display: grid;
  gap: 22px;
  padding: clamp(22px, 3.4vw, 34px);
}

.page-faq .faq-escape__copy h2 {
  margin: 8px 0 10px;
  font-size: clamp(20px, 2.8vw, 28px);
  line-height: 1.26;
}

.page-faq .faq-escape__copy p {
  margin: 0;
  max-width: 60ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-escape__copy strong {
  color: var(--text);
  font-weight: 600;
  word-break: break-all;
}

.page-faq .faq-escape__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 平板以上 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-escape__panel {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 34px;
  }

  .page-faq .faq-escape__actions {
    flex-direction: column;
    align-items: stretch;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 52px;
  }

  .page-faq .faq-hero__media {
    align-self: end;
  }

  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1fr) 288px;
    gap: 42px;
  }
}

@media (min-width: 880px) {
  .page-faq .faq-layout {
    grid-template-columns: 176px minmax(0, 1fr);
    gap: 62px;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--nav-h) + 28px);
    gap: 16px;
  }

  .page-faq .faq-groups {
    flex-direction: column;
    overflow: visible;
    padding-bottom: 0;
    gap: 6px;
  }

  .page-faq .faq-chip {
    width: 100%;
    justify-content: flex-start;
    padding: 11px 14px;
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
  }

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

@media (min-width: 1180px) {
  .page-faq .faq-layout {
    grid-template-columns: 196px minmax(0, 1fr);
    gap: 76px;
  }
}

/* ---------- 降低动态偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-chip,
  .page-faq .faq-item__q,
  .page-faq .faq-item__arrow {
    transition: none;
  }

  .page-faq .faq-item[open] .faq-item__a {
    animation: none;
  }
}
<<<END>>>