/* ============ 支持中心 · 页面专属样式（作用域限定于 .page-faq） ============ */

.page-faq {
  --faq-rail: 292px;
  --faq-line: rgba(11, 27, 43, .12);
  --faq-body: #3F4D55;
  background: var(--c-white);
  color: var(--c-ink);
  overflow-x: hidden;
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumbs {
  background: var(--c-ink);
  padding: 14px 0 10px;
}
.page-faq .breadcrumbs__list {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 12px;
  letter-spacing: .04em;
}
.page-faq .breadcrumbs__link {
  color: var(--on-dark);
  text-decoration: none;
  transition: color .18s var(--ease);
}
.page-faq .breadcrumbs__link:hover { color: var(--c-cyan); }
.page-faq .breadcrumbs__sep { color: rgba(247, 250, 248, .34); }
.page-faq .breadcrumbs__current {
  color: var(--c-cyan);
  font-family: var(--font-mono);
  letter-spacing: .08em;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 0 0 clamp(40px, 6vw, 76px);
  background:
    radial-gradient(120% 150% at 88% -30%, rgba(25, 227, 209, .20) 0%, rgba(25, 227, 209, 0) 56%),
    radial-gradient(90% 120% at 4% 110%, rgba(14, 122, 79, .34) 0%, rgba(14, 122, 79, 0) 60%),
    linear-gradient(180deg, var(--c-ink) 0%, var(--c-ink-2) 100%);
  color: var(--c-white);
  overflow: hidden;
}
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 6px;
  background: linear-gradient(90deg, var(--c-grass) 0%, var(--c-grass) 42%, var(--c-orange) 42%, var(--c-orange) 62%, var(--c-cyan) 62%, var(--c-cyan) 100%);
}
.page-faq .faq-hero__grid {
  position: relative;
  display: grid;
  gap: clamp(26px, 4vw, 52px);
  padding: clamp(26px, 4vw, 52px) clamp(20px, 3vw, 44px);
  border: 1px solid var(--line-dark);
  border-top: none;
  background: rgba(20, 42, 63, .38);
}
.page-faq .faq-hero__title {
  margin: 12px 0 18px;
  font-family: var(--font-sans);
  font-weight: 300;
  font-size: clamp(38px, 8vw, 82px);
  line-height: 1.04;
  letter-spacing: .015em;
}
.page-faq .faq-hero__lede {
  max-width: 56ch;
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--on-dark);
}
.page-faq .faq-hero .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--c-cyan);
}

.page-faq .faq-hero__stats {
  display: grid;
  gap: 1px;
  margin: 0;
  align-self: end;
  background: var(--line-dark);
  border: 1px solid var(--line-dark);
}
.page-faq .faq-stat {
  padding: 16px 18px;
  background: rgba(11, 27, 43, .62);
}
.page-faq .faq-stat__label {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--on-dark);
}
.page-faq .faq-stat__value {
  margin: 6px 0 0;
  font-family: var(--font-mono);
  font-size: 24px;
  letter-spacing: .02em;
  color: var(--c-cyan);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: clamp(28px, 4vw, 56px);
  padding-top: clamp(32px, 5vw, 68px);
  padding-bottom: clamp(52px, 8vw, 104px);
}

/* ---------- 左侧索引 ---------- */
.page-faq .faq-index {
  min-width: 0;
}
.page-faq .faq-index__art {
  margin: 0 0 20px;
  border: 1px solid var(--c-mist);
  background: linear-gradient(155deg, rgba(14, 122, 79, .14), rgba(11, 27, 43, .05));
  overflow: hidden;
}
.page-faq .faq-index__art img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 5 / 4;
  object-fit: cover;
}
.page-faq .chapter-index {
  display: flex;
  flex-direction: row;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--c-mist);
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}
.page-faq .chapter-index::-webkit-scrollbar { height: 4px; }
.page-faq .chapter-index::-webkit-scrollbar-thumb { background: var(--c-mist); }

.page-faq .chapter-index__link {
  display: flex;
  flex: 0 0 auto;
  align-items: baseline;
  gap: 8px;
  padding: 9px 12px;
  border-bottom: 3px solid transparent;
  color: var(--c-graphite);
  text-decoration: none;
  font-size: 14px;
  white-space: nowrap;
  transition: color .18s var(--ease), border-color .18s var(--ease), background .18s var(--ease);
}
.page-faq .chapter-index__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--c-grass);
}
.page-faq .chapter-index__link:hover {
  color: var(--c-ink);
  background: rgba(14, 122, 79, .07);
}
.page-faq .chapter-index__link.is-active {
  color: var(--c-grass-deep);
  border-bottom-color: var(--c-grass);
  background: rgba(14, 122, 79, .09);
  font-weight: 700;
}
.page-faq .chapter-index__link.is-active .chapter-index__num { color: var(--c-orange); }

/* ---------- 问答区 ---------- */
.page-faq .faq-sections {
  display: flex;
  flex-direction: column;
  gap: clamp(40px, 6vw, 72px);
  min-width: 0;
}
.page-faq .faq-section { scroll-margin-top: calc(var(--header-h) + 24px); }

.page-faq .faq-section__head {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  column-gap: 12px;
  align-items: baseline;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--c-ink);
}
.page-faq .faq-section__num {
  grid-column: 1;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--c-orange);
}
.page-faq .faq-section__title {
  grid-column: 2;
  margin: 0;
  font-size: clamp(21px, 3.2vw, 30px);
  font-weight: 900;
  line-height: 1.3;
  letter-spacing: .01em;
}
.page-faq .faq-section__note {
  grid-column: 2;
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-graphite);
}

.page-faq .faq-list { margin-top: 4px; }

/* ---------- 单条问答 ---------- */
.page-faq .faq-item {
  position: relative;
  border-bottom: 1px solid var(--faq-line);
}
.page-faq .faq-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--c-orange);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform .24s var(--ease);
}
.page-faq .faq-item[open]::before { transform: scaleY(1); }

.page-faq .faq-item__q {
  display: grid;
  grid-template-columns: 14px minmax(0, 1fr) 16px;
  column-gap: 12px;
  align-items: start;
  padding: 18px 6px 18px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.65;
  color: var(--c-ink);
  transition: background .18s var(--ease), color .18s var(--ease);
}
.page-faq .faq-item__q::-webkit-details-marker { display: none; }
.page-faq .faq-item__q:hover { background: rgba(14, 122, 79, .055); }
.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: -2px;
}

.page-faq .faq-item__dot {
  width: 8px;
  height: 8px;
  margin-top: 9px;
  border-radius: 50%;
  background: var(--c-cyan);
  box-shadow: 0 0 0 3px rgba(25, 227, 209, .18);
}

.page-faq .faq-item__mark {
  position: relative;
  width: 14px;
  height: 14px;
  margin-top: 7px;
  justify-self: end;
}
.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  background: var(--c-graphite);
  transition: transform .24s var(--ease), opacity .24s var(--ease), background .18s var(--ease);
}
.page-faq .faq-item__mark::before { left: 0; top: 6px; width: 14px; height: 2px; }
.page-faq .faq-item__mark::after { left: 6px; top: 0; width: 2px; height: 14px; }
.page-faq .faq-item[open] .faq-item__mark::before { background: var(--c-orange); }
.page-faq .faq-item[open] .faq-item__mark::after { transform: scaleY(0); opacity: 0; }

.page-faq .faq-item__a {
  padding: 0 6px 22px 44px;
}
.page-faq .faq-item__a p {
  max-width: 66ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--faq-body);
}

/* ---------- 章节尾部指向链接 ---------- */
.page-faq .faq-more {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 20px;
  padding-top: 10px;
  border-top: 2px solid var(--c-grass);
  color: var(--c-grass-deep);
  font-size: 14px;
  text-decoration: none;
  transition: color .18s var(--ease);
}
.page-faq .faq-more::after {
  content: "\2192";
  font-family: var(--font-mono);
  transition: transform .18s var(--ease);
}
.page-faq .faq-more:hover { color: var(--c-orange); }
.page-faq .faq-more:hover::after { transform: translateX(4px); }

/* ---------- 联系客服区块 ---------- */
.page-faq .faq-section--contact {
  padding: clamp(22px, 3vw, 36px);
  background: linear-gradient(180deg, rgba(14, 122, 79, .07) 0%, rgba(14, 122, 79, 0) 70%);
  border-left: 3px solid var(--c-grass);
}
.page-faq .faq-contact {
  display: grid;
  gap: 20px;
  margin: 22px 0 8px;
}
.page-faq .faq-contact__media {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--c-mist);
  background: var(--c-ink-2);
}
.page-faq .faq-contact__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}
.page-faq .faq-contact__side { display: flex; flex-direction: column; gap: 12px; }
.page-faq .faq-contact__pitch {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--faq-body);
}

.page-faq .copy-field {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  background: var(--c-ink);
  border: 1px solid var(--c-ink-2);
}
.page-faq .copy-field__value {
  flex: 1 1 160px;
  min-width: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: .02em;
  color: var(--c-cyan);
  word-break: break-all;
}
.page-faq .copy-field__btn {
  flex: 0 0 auto;
  padding: 8px 14px;
  border: 1px solid rgba(25, 227, 209, .45);
  background: transparent;
  color: var(--c-cyan);
  font-family: var(--font-sans);
  font-size: 13px;
  cursor: pointer;
  transition: background .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease);
}
.page-faq .copy-field__btn:hover {
  background: var(--c-cyan);
  border-color: var(--c-cyan);
  color: var(--c-ink);
}
.page-faq .copy-field__state { flex: 1 1 100%; font-size: 12px; color: var(--c-cyan); }
.page-faq .copy-field__state:empty { display: none; }
.page-faq .copy-field[data-copied] { border-color: var(--c-cyan); }

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-hero__stats { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .page-faq .faq-contact { grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); align-items: stretch; }
  .page-faq .faq-contact__media img { height: 100%; }
}

@media (min-width: 1024px) {
  .page-faq .faq-body {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    align-items: start;
  }
  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }
  .page-faq .chapter-index {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }
  .page-faq .chapter-index__link {
    border-bottom: none;
    border-left: 3px solid transparent;
    padding: 10px 12px 10px 14px;
    white-space: normal;
  }
  .page-faq .chapter-index__link.is-active {
    border-bottom: none;
    border-left-color: var(--c-grass);
  }
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: end;
  }
}

@media (min-width: 1220px) {
  .page-faq { --faq-rail: 320px; }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item::before,
  .page-faq .faq-item__mark::before,
  .page-faq .faq-item__mark::after,
  .page-faq .faq-more::after,
  .page-faq .faq-item__q,
  .page-faq .chapter-index__link {
    transition: none;
  }
}
</main>