/* ===== 帮助中心 · 页面专属样式 ===== */
.page-faq {
  --faq-line: rgba(201, 162, 39, 0.26);
  --faq-soft: rgba(140, 153, 174, 0.22);
  --faq-answer: rgba(232, 237, 245, 0.78);
  padding-bottom: clamp(2.5rem, 7vw, 5rem);
  color: var(--text);
}

/* 面包屑 */
.page-faq .faq-crumbs {
  padding-top: clamp(1.1rem, 3vw, 1.75rem);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-top: clamp(1.4rem, 4vw, 2.6rem);
}

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

.page-faq .faq-hero h1 {
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(1.7rem, 5.4vw, 2.85rem);
  line-height: 1.28;
  letter-spacing: -0.012em;
  margin: 0.6rem 0 1.1rem;
  color: var(--paper);
}

.page-faq .faq-hero .lede {
  margin: 0;
  max-width: 58ch;
  font-size: clamp(0.98rem, 2.2vw, 1.06rem);
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .faq-hero__banner {
  margin-top: clamp(1.6rem, 4.5vw, 2.8rem);
}

.page-faq .faq-hero__banner .figure {
  margin: 0;
  border: 1px solid var(--faq-line);
  background: linear-gradient(180deg, rgba(18, 32, 58, 0.45), rgba(11, 21, 36, 0.95));
  overflow: hidden;
}

.page-faq .faq-hero__banner .figure__img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 360px;
  object-fit: cover;
  filter: saturate(0.86) contrast(1.04);
}

/* ---------- 三个直达入口 ---------- */
.page-faq .faq-gates {
  margin-top: clamp(2rem, 5vw, 3.2rem);
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  border: 1px solid var(--faq-soft);
  background: var(--faq-soft);
}

.page-faq .gate {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  padding: 1.35rem 1.3rem 1.5rem;
  background: var(--panel);
  color: inherit;
  text-decoration: none;
  overflow: hidden;
  transition: background-color 0.25s var(--ease);
}

.page-faq .gate::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.34s var(--ease);
}

.page-faq .gate:hover,
.page-faq .gate:focus-visible {
  background: var(--card);
}

.page-faq .gate:hover::after,
.page-faq .gate:focus-visible::after {
  transform: scaleX(1);
}

.page-faq .gate:focus-visible {
  outline: 2px solid var(--gold-soft);
  outline-offset: -2px;
}

.page-faq .gate__kicker {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--gold);
}

.page-faq .gate__title {
  font-family: var(--serif);
  font-size: 1.12rem;
  font-weight: 700;
  line-height: 1.42;
  color: var(--paper);
}

.page-faq .gate__desc {
  font-size: 0.88rem;
  line-height: 1.72;
  color: var(--mist);
}

/* ---------- 分组答疑主体 ---------- */
.page-faq .faq-body {
  margin-top: clamp(2.4rem, 6vw, 4rem);
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.4rem, 4vw, 2.2rem);
}

.page-faq .faq-rail .rail__title {
  margin: 0 0 0.8rem;
  padding-left: 0.95rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.page-faq .faq-rail .tabs__list {
  display: flex;
  flex-direction: row;
  gap: 0;
  border-bottom: 1px solid var(--faq-soft);
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-rail .tabs__tab {
  flex: 0 0 auto;
  width: auto;
  margin: 0;
  padding: 0.72rem 0.95rem;
  border: 0;
  border-bottom: 2px solid transparent;
  background: transparent;
  font: inherit;
  font-size: 0.92rem;
  line-height: 1.5;
  white-space: nowrap;
  color: var(--mist);
  cursor: pointer;
  transition: color 0.22s var(--ease), background-color 0.22s var(--ease),
    border-color 0.22s var(--ease);
}

.page-faq .faq-rail .tabs__tab:hover {
  color: var(--text);
  background: rgba(28, 46, 74, 0.6);
}

.page-faq .faq-rail .tabs__tab[aria-selected="true"] {
  color: var(--gold-soft);
  font-weight: 600;
  border-bottom-color: var(--gold);
  background: linear-gradient(0deg, rgba(201, 162, 39, 0.12), rgba(201, 162, 39, 0));
}

.page-faq .faq-rail .tabs__tab:focus-visible {
  outline: 2px solid var(--gold-soft);
  outline-offset: -2px;
}

/* 面板 */
.page-faq .tabs__panel:focus {
  outline: none;
}

.page-faq .panel-head {
  border-top: 1px solid var(--gold);
  padding-top: 0.95rem;
  margin-bottom: 1.2rem;
}

.page-faq .panel-head h2 {
  margin: 0 0 0.4rem;
  font-family: var(--serif);
  font-size: clamp(1.28rem, 3.2vw, 1.6rem);
  font-weight: 700;
  line-height: 1.36;
  color: var(--paper);
}

.page-faq .panel-head p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.72;
  color: var(--mist);
}

/* 单条问答 */
.page-faq .qa {
  border-bottom: 1px solid var(--faq-soft);
}

.page-faq .qa > summary {
  display: flex;
  align-items: flex-start;
  gap: 0.8rem;
  padding: 1rem 0.25rem 1rem 0;
  cursor: pointer;
  list-style: none;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.65;
  color: var(--text);
  transition: color 0.2s var(--ease);
}

.page-faq .qa > summary::-webkit-details-marker {
  display: none;
}

.page-faq .qa > summary::marker {
  content: "";
}

.page-faq .qa > summary:hover {
  color: var(--gold-soft);
}

.page-faq .qa > summary:focus-visible {
  outline: 2px solid var(--gold-soft);
  outline-offset: 2px;
}

.page-faq .qa__q {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .qa__mark {
  position: relative;
  flex: 0 0 auto;
  width: 15px;
  height: 15px;
  margin-top: 0.38rem;
  border: 1px solid var(--gold);
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  background: var(--gold-soft);
  transition: transform 0.25s var(--ease), opacity 0.25s var(--ease);
}

.page-faq .qa__mark::before {
  left: 3px;
  right: 3px;
  top: 6px;
  height: 1px;
}

.page-faq .qa__mark::after {
  top: 3px;
  bottom: 3px;
  left: 6px;
  width: 1px;
}

.page-faq .qa[open] .qa__mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .qa__a {
  padding: 0 0.9rem 1.25rem 1.8rem;
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--faq-answer);
}

.page-faq .qa__a p {
  margin: 0 0 0.7rem;
}

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

/* 步骤条 */
.page-faq .steps {
  list-style: none;
  margin: 0.9rem 0 0;
  padding: 0;
}

.page-faq .steps__item {
  position: relative;
  padding: 0 0 1.05rem 2.5rem;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--faq-answer);
}

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

.page-faq .steps__item::before {
  content: "";
  position: absolute;
  left: 0.72rem;
  top: 1.62rem;
  bottom: -0.05rem;
  width: 1px;
  background: var(--faq-line);
}

.page-faq .steps__item:last-child::before {
  display: none;
}

.page-faq .steps__num {
  position: absolute;
  left: 0;
  top: 0.16rem;
  width: 1.45rem;
  height: 1.45rem;
  display: grid;
  place-items: center;
  border: 1px solid var(--gold);
  font-family: var(--mono);
  font-size: 0.66rem;
  line-height: 1;
  color: var(--gold-soft);
}

/* 图文分栏 */
.page-faq .panel-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.4rem;
}

.page-faq .faq-figure {
  margin: 0;
}

.page-faq .faq-figure .figure__img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 420px;
  object-fit: cover;
  border: 1px solid var(--faq-line);
}

/* 等宽数字与地址 */
.page-faq .faq-mono {
  font-family: var(--mono);
  letter-spacing: 0.01em;
  color: var(--gold-soft);
}

/* ---------- 收尾 ---------- */
.page-faq .faq-close {
  margin-top: clamp(2.8rem, 7vw, 4.5rem);
}

.page-faq .faq-close__paper {
  padding: clamp(1.4rem, 4vw, 2.4rem);
  color: var(--ink);
}

.page-faq .faq-close__paper h2 {
  margin: 0 0 0.8rem;
  font-family: var(--serif);
  font-size: clamp(1.28rem, 3.2vw, 1.55rem);
  font-weight: 700;
  line-height: 1.35;
  color: var(--ink);
}

.page-faq .faq-close__paper p {
  margin: 0 0 0.7rem;
  font-size: 0.94rem;
  line-height: 1.85;
  color: rgba(30, 27, 22, 0.82);
}

.page-faq .faq-close__paper .faq-mono {
  color: var(--ink);
  font-weight: 500;
}

.page-faq .faq-close__line {
  margin-top: 1rem;
}

.page-faq .faq-close__actions {
  margin-top: 1.4rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.85rem;
}

.page-faq .faq-close__paper .ghost-link {
  color: var(--ink);
  text-decoration-color: rgba(30, 27, 22, 0.4);
}

.page-faq .faq-close__paper .btn--gold {
  color: var(--ink);
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-faq .faq-gates {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-faq .gate:first-child {
    grid-column: 1 / -1;
  }
}

@media (min-width: 760px) {
  .page-faq .faq-gates {
    grid-template-columns: 1.1fr 1fr 0.95fr;
  }
  .page-faq .gate:first-child {
    grid-column: auto;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-body {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: clamp(2rem, 4.5vw, 3.4rem);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 5.75rem;
  }

  .page-faq .faq-rail .tabs__list {
    flex-direction: column;
    gap: 1px;
    border-bottom: 0;
    border-top: 1px solid var(--faq-soft);
    overflow: visible;
  }

  .page-faq .faq-rail .tabs__tab {
    width: 100%;
    padding: 0.82rem 0.7rem 0.82rem 1rem;
    border-bottom: 0;
    border-left: 2px solid transparent;
    white-space: normal;
    text-align: left;
    font-size: 0.92rem;
  }

  .page-faq .faq-rail .tabs__tab[aria-selected="true"] {
    border-left-color: var(--gold);
    border-bottom-color: transparent;
    background: linear-gradient(90deg, rgba(201, 162, 39, 0.13), rgba(201, 162, 39, 0));
  }

  .page-faq .qa > summary {
    padding-right: 1.5rem;
  }

  .page-faq .qa__a {
    padding-right: 2.5rem;
  }
}

@media (min-width: 1040px) {
  .page-faq .panel-split {
    grid-template-columns: minmax(0, 1fr) 258px;
    gap: 2.2rem;
    align-items: start;
  }

  .page-faq .faq-figure {
    position: sticky;
    top: 6.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .gate,
  .page-faq .gate::after,
  .page-faq .faq-rail .tabs__tab,
  .page-faq .qa > summary,
  .page-faq .qa__mark::before,
  .page-faq .qa__mark::after {
    transition: none;
  }
}