/* ==========================================================
   使用指南 /guide/ —— 页面专属样式
   作用域：.page-faq
   ========================================================== */

.page-faq {
  --faq-panel: rgba(20, 40, 74, 0.72);
  --faq-inset: rgba(11, 23, 48, 0.55);
  --faq-radius: var(--r-card);
  padding-bottom: 56px;
}

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

.page-faq a:hover {
  text-decoration: underline;
}

/* ---------- 首屏 ---------- */

.page-faq .crumbs {
  margin: 4px 0 0;
  font-size: 13px;
}

.page-faq .faq-hero {
  margin-top: 18px;
  padding: clamp(22px, 4vw, 40px);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background:
    radial-gradient(110% 130% at 100% 0%, rgba(63, 208, 175, 0.18), transparent 58%),
    radial-gradient(90% 120% at 0% 100%, rgba(255, 176, 32, 0.12), transparent 62%),
    linear-gradient(155deg, var(--night-800) 0%, var(--night-900) 72%);
  display: grid;
  gap: 26px;
}

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

.page-faq .faq-hero__eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-faq .faq-hero h1 {
  margin: 0;
  font-size: clamp(28px, 4.4vw, 46px);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  max-width: 58ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-dim);
}

.page-faq .faq-hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__chips .tag {
  text-decoration: none;
}

.page-faq .faq-hero__aside {
  display: grid;
  gap: 12px;
  align-content: start;
  padding: 22px;
  border: 1px solid rgba(255, 176, 32, 0.32);
  border-radius: var(--faq-radius);
  background: rgba(11, 23, 48, 0.62);
}

.page-faq .faq-hero__aside-title {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  color: var(--amber);
}

.page-faq .faq-hero__aside-body {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-dim);
}

.page-faq .faq-hero__aside .btn {
  justify-self: start;
  text-decoration: none;
}

/* ---------- 主体两栏 ---------- */

.page-faq .faq-layout {
  margin-top: 44px;
  display: grid;
  gap: 30px;
  align-items: start;
}

.page-faq .faq-nav {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  background: var(--faq-panel);
}

.page-faq .faq-nav__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gray);
}

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

.page-faq .faq-nav__link {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 9px 10px;
  border-left: 3px solid transparent;
  border-radius: var(--r-sm);
  color: var(--text-dim);
  font-size: 14px;
  line-height: 1.6;
  text-decoration: none;
  transition: background-color 0.12s linear, color 0.12s linear, border-color 0.12s linear;
}

.page-faq .faq-nav__no {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--celadon);
}

.page-faq .faq-nav__link:hover,
.page-faq .faq-nav__link:focus-visible {
  background: var(--night-700);
  color: var(--text);
  border-left-color: var(--amber);
  text-decoration: none;
}

.page-faq .faq-nav__foot {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--gray);
}

/* ---------- 问答条目 ---------- */

.page-faq .faq-main {
  display: grid;
  gap: 16px;
  min-width: 0;
}

.page-faq .faq-item {
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  background: var(--faq-panel);
  scroll-margin-top: 96px;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

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

.page-faq .faq-item[open] {
  box-shadow: var(--shadow-1);
}

.page-faq .faq-item__head {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
}

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

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

.page-faq .faq-item__no {
  flex: none;
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  line-height: 1;
  color: var(--amber);
}

.page-faq .faq-item__title {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-faq .faq-item__chev {
  flex: none;
  width: 9px;
  height: 9px;
  margin-top: -4px;
  border-right: 2px solid var(--celadon);
  border-bottom: 2px solid var(--celadon);
  transform: rotate(45deg);
  transition: transform 0.2s var(--ease), margin-top 0.2s var(--ease);
}

.page-faq .faq-item[open] .faq-item__chev {
  margin-top: 4px;
  transform: rotate(-135deg);
}

.page-faq .faq-item__body {
  padding: 18px 20px 24px;
  border-top: 1px solid var(--line);
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-dim);
}

.page-faq .faq-item__body > * + * {
  margin-top: 16px;
}

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

/* ---------- 步骤列表 ---------- */

.page-faq .steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-faq .steps > li {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 12px;
  padding: 13px 15px;
  border-left: 3px solid var(--celadon);
  border-radius: var(--r-sm);
  background: var(--faq-inset);
}

.page-faq .steps__no {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--celadon);
}

.page-faq .steps__text {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-faq .steps__text strong {
  font-weight: 500;
  color: var(--text);
}

/* ---------- 检索示例词 ---------- */

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

.page-faq .search-demo__chip {
  padding: 7px 13px;
  border: 1px dashed rgba(63, 208, 175, 0.55);
  border-radius: var(--r-pill);
  background: rgba(63, 208, 175, 0.1);
  color: var(--celadon-light);
  font-family: var(--font-mono);
  font-size: 13px;
  cursor: pointer;
  transition: background-color 0.15s var(--ease), border-color 0.15s var(--ease);
}

.page-faq .search-demo__chip:hover {
  background: rgba(63, 208, 175, 0.2);
  border-style: solid;
}

/* ---------- 界面示意 ---------- */

.page-faq .faq-figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  overflow: hidden;
  background: var(--faq-inset);
}

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

.page-faq .faq-figure figcaption {
  padding: 11px 14px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.65;
  color: var(--gray);
}

/* ---------- 提问信息清单 ---------- */

.page-faq .ask-list {
  display: grid;
  gap: 8px;
}

.page-faq .ask-list__row {
  display: grid;
  gap: 4px;
  padding: 12px 14px;
  border-radius: var(--r-sm);
  background: var(--faq-inset);
}

.page-faq .ask-list__key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--amber);
}

.page-faq .ask-list__val {
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-dim);
}

/* ---------- 收尾批注 ---------- */

.page-faq .faq-tail {
  margin: 6px 0 0;
}

/* ---------- 响应式 ---------- */

@media (min-width: 620px) {
  .page-faq .ask-list__row {
    grid-template-columns: 128px minmax(0, 1fr);
    gap: 14px;
    align-items: baseline;
  }
}

@media (min-width: 760px) {
  .page-faq .faq-figure--tall {
    max-width: 420px;
  }
}

@media (min-width: 920px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1fr) 292px;
    gap: 40px;
    align-items: start;
  }

  .page-faq .faq-hero__lead {
    font-size: 17px;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: 52px;
  }

  .page-faq .faq-nav {
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-item__head {
    padding: 20px 24px;
  }

  .page-faq .faq-item__body {
    padding: 20px 24px 26px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__chev {
    transition: none;
  }

  .page-faq .faq-nav__link,
  .page-faq .search-demo__chip,
  .page-faq .faq-item {
    transition-duration: 0.01ms;
  }
}