/* ===== 使用教程 · 页面专属样式（作用域 .page-faq） ===== */
.page-faq {
  --faq-index-w: 272px;
  --faq-hair: rgba(36, 80, 111, 0.6);
  background: var(--deep-900);
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumb {
  padding-top: clamp(18px, 3vw, 34px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-intro {
  padding-top: clamp(22px, 4vw, 44px);
  padding-bottom: clamp(30px, 5vw, 62px);
}

.page-faq .faq-intro__lead {
  max-width: 74ch;
}

.page-faq .faq-title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.85rem, 5.4vw, 3.15rem);
  line-height: 1.14;
  letter-spacing: 0.015em;
  color: var(--silver-100);
  text-wrap: balance;
}

.page-faq .faq-title::after {
  content: "";
  display: block;
  width: clamp(56px, 12vw, 108px);
  height: 2px;
  margin-top: 18px;
  background: linear-gradient(90deg, var(--amber), rgba(244, 167, 60, 0));
}

.page-faq .faq-intro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-banner {
  margin: clamp(28px, 5vw, 48px) 0 0;
}

/* ---------- 图形元素通用 ---------- */
.page-faq .faq-banner .wdg-figure__media img,
.page-faq .faq-figure .wdg-figure__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(0.72) contrast(1.05);
}

.page-faq .faq-figure {
  margin: 0 0 clamp(24px, 4vw, 36px);
}

/* ---------- 场景区 ---------- */
.page-faq .faq-scenes {
  padding-top: clamp(28px, 5vw, 54px);
  padding-bottom: clamp(36px, 6vw, 78px);
}

.page-faq .faq-scenes .wdg-h2 {
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-faq .faq-bench {
  display: grid;
  gap: 26px;
}

@media (min-width: 1040px) {
  .page-faq .faq-bench {
    grid-template-columns: minmax(0, 1fr) var(--faq-index-w);
    column-gap: 40px;
    align-items: start;
  }
}

/* ---------- 场景切换带 ---------- */
.page-faq .faq-tabs {
  display: block;
  min-width: 0;
}

.page-faq .faq-tabs .wdg-tabs__list {
  display: flex;
  gap: 2px;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  border-bottom: var(--edge);
  scrollbar-width: none;
}

.page-faq .faq-tabs .wdg-tabs__list::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-tabs .wdg-tabs__tab {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 46px;
  padding: 12px 15px;
  background: transparent;
  border: 0;
  border-bottom: 2px solid transparent;
  color: var(--silver-300);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  white-space: nowrap;
  cursor: pointer;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease),
    background var(--dur) var(--ease);
}

.page-faq .faq-tabs .wdg-tabs__tab:hover {
  color: var(--silver-100);
  border-bottom-color: var(--deep-500);
}

.page-faq .faq-tabs .wdg-tabs__tab[aria-selected="true"] {
  color: var(--amber);
  border-bottom-color: var(--amber);
  background: linear-gradient(180deg, rgba(244, 167, 60, 0), rgba(244, 167, 60, 0.11));
}

.page-faq .faq-tabs .wdg-tabs__tab:focus-visible {
  outline: 1px solid var(--amber);
  outline-offset: -3px;
}

.page-faq .faq-tab__num {
  font-weight: 600;
  font-size: 0.7rem;
  color: var(--deep-500);
}

.page-faq .faq-tabs .wdg-tabs__tab[aria-selected="true"] .faq-tab__num {
  color: var(--amber);
}

/* ---------- 面板 ---------- */
.page-faq .faq-panel {
  padding-top: clamp(22px, 3.4vw, 34px);
  min-width: 0;
}

.page-faq .faq-panel__head {
  margin: 0 0 16px;
  padding-left: 12px;
  border-left: 2px solid var(--amber);
  color: var(--silver-100);
}

/* ---------- 折叠条目 ---------- */
.page-faq .faq-list {
  border-top: var(--edge-soft);
}

.page-faq .faq-item {
  border-bottom: var(--edge-soft);
  background: transparent;
  transition: background var(--dur) var(--ease);
}

.page-faq .faq-item[open] {
  background: linear-gradient(90deg, rgba(22, 48, 74, 0.6), rgba(11, 27, 44, 0) 82%);
}

.page-faq .faq-item__summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  padding: 15px 12px 15px 13px;
  border-left: 2px solid transparent;
  cursor: pointer;
  list-style: none;
  transition: border-color var(--dur) var(--ease);
}

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

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

.page-faq .faq-item__summary:hover,
.page-faq .faq-item[open] .faq-item__summary {
  border-left-color: var(--amber);
}

.page-faq .faq-item__summary:focus-visible {
  outline: 1px solid var(--amber);
  outline-offset: -3px;
}

.page-faq .faq-item__num {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  color: var(--deep-500);
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-item[open] .faq-item__num {
  color: var(--amber);
}

.page-faq .faq-item__title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.5;
  color: var(--silver-100);
}

.page-faq .faq-item__mark {
  width: 9px;
  height: 9px;
  border-right: 1px solid var(--deep-500);
  border-bottom: 1px solid var(--deep-500);
  transform: rotate(45deg) translate(-2px, -2px);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-item[open] .faq-item__mark {
  transform: rotate(-135deg) translate(-2px, -2px);
  border-color: var(--amber);
}

.page-faq .faq-item__body {
  padding: 2px 14px 20px 15px;
}

@media (min-width: 700px) {
  .page-faq .faq-item__body {
    padding-left: 43px;
    padding-right: 24px;
  }
}

/* ---------- 现象 / 判断 / 处理顺序 ---------- */
.page-faq .faq-step {
  display: grid;
  gap: 6px;
  padding: 11px 0;
  border-top: 1px dashed var(--faq-hair);
}

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

@media (min-width: 700px) {
  .page-faq .faq-step {
    grid-template-columns: 88px minmax(0, 1fr);
    gap: 18px;
    align-items: baseline;
  }
}

.page-faq .faq-step__key {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.09em;
  color: var(--amber);
}

.page-faq .faq-step__key--fix {
  color: var(--green);
}

.page-faq .faq-step__text {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.85;
  color: var(--silver-300);
}

.page-faq .faq-step__text a {
  color: var(--silver-100);
  text-decoration: none;
  border-bottom: 1px solid var(--deep-500);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

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

.page-faq .faq-code {
  display: inline-block;
  padding: 1px 6px;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.84em;
  color: var(--silver-100);
  background: rgba(36, 80, 111, 0.4);
  border: var(--edge-soft);
}

/* ---------- 右侧问题定位索引 ---------- */
.page-faq .faq-index {
  border: var(--edge);
  background: rgba(7, 18, 31, 0.74);
  box-shadow: var(--shadow);
}

.page-faq .faq-index__title {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 0;
  padding: 12px 14px;
  border-bottom: var(--edge);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--silver-100);
}

.page-faq .faq-index__title::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--amber);
}

.page-faq .faq-index__list {
  margin: 0;
  padding: 6px 0;
  list-style: none;
}

.page-faq .faq-index__link {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  align-items: baseline;
  padding: 9px 14px;
  border-left: 2px solid transparent;
  color: var(--silver-300);
  font-size: 0.79rem;
  line-height: 1.6;
  text-decoration: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease),
    background var(--dur) var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--amber);
  border-left-color: var(--amber);
  background: rgba(244, 167, 60, 0.07);
}

.page-faq .faq-index__tag {
  font-family: var(--font-mono);
  font-size: 0.67rem;
  letter-spacing: 0.06em;
  color: var(--deep-500);
}

@media (min-width: 1040px) {
  .page-faq .faq-index {
    position: sticky;
    top: 96px;
  }
}

/* ---------- 收尾入口 ---------- */
.page-faq .faq-outro {
  border-top: var(--edge);
  background:
    radial-gradient(120% 120% at 10% 0%, rgba(22, 48, 74, 0.78), rgba(7, 18, 31, 0) 62%),
    var(--deep-950);
}

.page-faq .faq-outro__grid {
  display: grid;
  gap: 28px;
}

@media (min-width: 940px) {
  .page-faq .faq-outro__grid {
    grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
    column-gap: 56px;
    align-items: start;
  }
}

.page-faq .faq-outro__list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: var(--edge-soft);
}

.page-faq .faq-outro__item {
  border-bottom: var(--edge-soft);
}

.page-faq .faq-outro__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 18px 14px;
  border-left: 2px solid transparent;
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-outro__link:hover,
.page-faq .faq-outro__link:focus-visible {
  border-left-color: var(--amber);
  background: rgba(244, 167, 60, 0.06);
}

.page-faq .faq-outro__num {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  color: var(--amber);
  padding-top: 4px;
}

.page-faq .faq-outro__text {
  display: block;
}

.page-faq .faq-outro__text strong {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.5;
  color: var(--silver-100);
}

.page-faq .faq-outro__text span {
  display: block;
  font-size: 0.86rem;
  line-height: 1.8;
  color: var(--silver-300);
}

/* ---------- 窄屏兜底 ---------- */
@media (max-width: 420px) {
  .page-faq .faq-intro__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .page-faq .faq-item__title {
    font-size: 0.95rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__mark,
  .page-faq .faq-tabs .wdg-tabs__tab,
  .page-faq .faq-index__link,
  .page-faq .faq-outro__link {
    transition: none;
  }
}