.page-faq {
  padding-top: clamp(20px, 4vw, 44px);
  padding-bottom: clamp(56px, 9vw, 120px);
  overflow-x: clip;
  color: var(--paper);
}

.page-faq .og-crumbs {
  margin-bottom: clamp(20px, 3.5vw, 36px);
  font-size: 13px;
  color: var(--sage);
}

.page-faq a:focus-visible,
.page-faq summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  display: grid;
  grid-template-areas:
    "copy"
    "fig";
  gap: clamp(20px, 4vw, 44px);
  align-items: start;
  padding-bottom: clamp(30px, 5vw, 56px);
}

.page-faq .faq-hero__copy { grid-area: copy; min-width: 0; }
.page-faq .faq-hero__fig { grid-area: fig; margin: 0; min-width: 0; }

.page-faq .faq-hero__fig img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: 2px;
  filter: saturate(0.82) contrast(1.06);
}

.page-faq .faq-hero__fig figcaption {
  margin-top: 10px;
  padding-left: 10px;
  border-left: 2px solid var(--orange);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--sage);
}

.page-faq .faq-hero__copy h1 {
  margin: 12px 0 16px;
  font-size: clamp(27px, 5vw, 54px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-weight: 900;
  color: var(--paper);
}

.page-faq .faq-hero__lede {
  max-width: 48ch;
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(242, 239, 230, 0.8);
}

.page-faq .faq-jump {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-jump a {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  padding: 7px 12px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: rgba(18, 21, 22, 0.35);
  color: var(--paper);
  font-size: 13px;
  line-height: 1.4;
  text-decoration: none;
  transition: border-color var(--t-fast) var(--ease),
              color var(--t-fast) var(--ease),
              background var(--t-fast) var(--ease);
}

.page-faq .faq-jump a span {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--orange);
}

.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
  background: var(--cyan-soft);
}

/* ---------- 分区骨架 ---------- */

.page-faq .faq-block {
  position: relative;
  padding-top: clamp(36px, 6vw, 68px);
}

.page-faq .faq-hero + .faq-block { padding-top: 0; }

.page-faq .faq-block:not(:first-of-type) {
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-block__head {
  display: grid;
  gap: 10px;
  max-width: 62ch;
  margin-bottom: clamp(18px, 3vw, 28px);
}

.page-faq .faq-block__head h2 {
  margin: 0;
  font-size: clamp(21px, 3.4vw, 34px);
  line-height: 1.22;
  letter-spacing: -0.015em;
  font-weight: 800;
  color: var(--paper);
}

.page-faq .faq-block__head > p:not(.og-kicker) {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--sage);
}

/* ---------- 收藏分区背景 ---------- */

.page-faq .faq-block--bookmark { isolation: isolate; }

.page-faq .faq-block__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  margin: 0;
  overflow: hidden;
  opacity: 0.16;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(115deg, rgba(0, 0, 0, 0.9), rgba(0, 0, 0, 0.15) 72%);
  mask-image: linear-gradient(115deg, rgba(0, 0, 0, 0.9), rgba(0, 0, 0, 0.15) 72%);
}

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

.page-faq .faq-block--bookmark > *:not(.faq-block__bg) {
  position: relative;
  z-index: 1;
}

/* ---------- 问答条目 ---------- */

.page-faq .faq-list { display: grid; }

.page-faq .faq-item {
  border-top: 1px solid var(--line);
  transition: border-color var(--t-fast) var(--ease);
}

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

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

.page-faq .faq-item summary {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr) 18px;
  gap: 12px;
  align-items: start;
  padding: 16px 2px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  line-height: 1.9;
  color: var(--sage);
  transition: color var(--t-fast) var(--ease);
}

.page-faq .faq-item__q {
  font-size: clamp(15px, 1.9vw, 17px);
  font-weight: 700;
  line-height: 1.55;
  color: var(--paper);
  transition: color var(--t-fast) var(--ease);
}

.page-faq .faq-item summary:hover .faq-item__num,
.page-faq .faq-item[open] .faq-item__num,
.page-faq .faq-item summary:hover .faq-item__q {
  color: var(--cyan);
}

.page-faq .faq-item__tog {
  position: relative;
  width: 18px;
  height: 18px;
  margin-top: 2px;
  border: 1px solid var(--line);
  transition: border-color var(--t-fast) var(--ease);
}

.page-faq .faq-item__tog::before,
.page-faq .faq-item__tog::after {
  content: "";
  position: absolute;
  background: var(--sage);
  transition: opacity var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}

.page-faq .faq-item__tog::before {
  left: 4px;
  right: 4px;
  top: 50%;
  height: 1px;
  margin-top: -0.5px;
}

.page-faq .faq-item__tog::after {
  top: 4px;
  bottom: 4px;
  left: 50%;
  width: 1px;
  margin-left: -0.5px;
}

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

.page-faq .faq-item[open] .faq-item__tog::before,
.page-faq .faq-item[open] .faq-item__tog::after {
  background: var(--cyan);
}

.page-faq .faq-item[open] .faq-item__tog::after { opacity: 0; }

.page-faq .faq-item__body {
  max-width: 66ch;
  padding: 0 2px 22px 42px;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(242, 239, 230, 0.84);
}

.page-faq .faq-item__body p { margin: 0 0 10px; }
.page-faq .faq-item__body p:last-child { margin-bottom: 0; }

/* ---------- 排查步骤链 ---------- */

.page-faq .faq-chain {
  list-style: none;
  margin: 2px 0 14px;
  padding: 0;
}

.page-faq .faq-chain li {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 12px;
  padding: 13px 0;
  border-top: 1px dashed rgba(134, 167, 157, 0.22);
}

.page-faq .faq-chain li:last-child {
  border-bottom: 1px dashed rgba(134, 167, 157, 0.22);
}

.page-faq .faq-chain__num {
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1.3;
  color: var(--cyan);
}

.page-faq .faq-chain__body strong {
  display: block;
  margin-bottom: 3px;
  font-size: 14.5px;
  font-weight: 700;
  color: var(--paper);
}

.page-faq .faq-chain__body span {
  display: block;
  font-size: 14px;
  line-height: 1.7;
  color: var(--sage);
}

/* ---------- 标签 ---------- */

.page-faq .faq-tag {
  display: inline-block;
  margin-right: 6px;
  padding: 1px 6px;
  border: 1px solid rgba(255, 122, 60, 0.5);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.5;
  letter-spacing: 0.05em;
  color: var(--orange);
  vertical-align: 1px;
  white-space: nowrap;
}

/* ---------- 延伸入口 ---------- */

.page-faq .faq-more {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px dashed rgba(134, 167, 157, 0.22);
}

.page-faq .faq-more a {
  display: inline-flex;
  align-items: center;
  font-size: 14px;
  line-height: 1.5;
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--t-fast) var(--ease),
              border-color var(--t-fast) var(--ease);
}

.page-faq .faq-more a::after {
  content: "→";
  margin-left: 6px;
  color: var(--cyan);
}

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

/* ---------- 联络面板 ---------- */

.page-faq .faq-contact {
  padding: clamp(20px, 4vw, 36px);
  border: 1px solid var(--line);
  border-radius: 2px;
  background: linear-gradient(135deg,
              rgba(46, 127, 107, 0.22) 0%,
              rgba(18, 21, 22, 0.55) 62%);
}

.page-faq .faq-contact__grid {
  display: grid;
  gap: 16px;
  margin-bottom: 20px;
}

.page-faq .faq-contact__item { display: grid; gap: 5px; }

.page-faq .faq-contact__k {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--sage);
}

.page-faq .faq-contact__v {
  font-size: 15px;
  line-height: 1.5;
  color: var(--paper);
  text-decoration: none;
  word-break: break-word;
}

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

.page-faq .faq-contact__hint {
  margin: 0 0 22px;
  padding-top: 16px;
  border-top: 1px solid var(--line-soft);
  font-size: 14px;
  line-height: 1.8;
  color: rgba(242, 239, 230, 0.82);
}

/* ---------- 响应式 ---------- */

@media (min-width: 620px) {
  .page-faq .faq-contact__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

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

@media (min-width: 720px) {
  .page-faq .faq-item summary {
    grid-template-columns: 56px minmax(0, 1fr) 20px;
    gap: 16px;
    padding: 19px 4px;
  }

  .page-faq .faq-item__num { font-size: 12.5px; }

  .page-faq .faq-item__body {
    padding: 0 4px 28px 76px;
  }

  .page-faq .faq-chain li {
    grid-template-columns: 46px minmax(0, 1fr);
    gap: 16px;
  }
}

@media (min-width: 860px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    grid-template-areas: "fig copy";
    gap: clamp(28px, 4vw, 56px);
  }

  .page-faq .faq-hero__fig { margin-top: 6px; }

  .page-faq .faq-block__head {
    margin-bottom: clamp(22px, 3vw, 34px);
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  }

  .page-faq .faq-item__body { max-width: 62ch; }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item__num,
  .page-faq .faq-item__q,
  .page-faq .faq-item__tog,
  .page-faq .faq-item__tog::before,
  .page-faq .faq-item__tog::after,
  .page-faq .faq-jump a,
  .page-faq .faq-more a {
    transition: none;
  }
}