/* ============================================================
   9博体育 · 答疑中心 /answers/
   作用域：.page-faq
   ============================================================ */

.page-faq {
  --faq-side-w: 252px;
  --faq-cut: 16px;
  padding-bottom: clamp(44px, 7vw, 92px);
}

/* ---------- 首屏 ---------- */

.page-faq__hero {
  position: relative;
  display: grid;
  gap: 16px;
  padding-top: clamp(22px, 3.4vw, 40px);
  padding-bottom: clamp(26px, 4vw, 46px);
  border-bottom: 1px solid var(--line);
  isolation: isolate;
}

.page-faq__hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(
    104deg,
    transparent 0 56%,
    rgba(62, 92, 70, 0.34) 56% 78%,
    rgba(134, 242, 168, 0.07) 78% 100%
  );
  pointer-events: none;
}

.page-faq__hero h1 {
  margin: 0;
  max-width: 21ch;
  font-family: var(--font-sans);
  font-size: clamp(29px, 4.6vw, 54px);
  font-weight: 700;
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-faq__lead {
  margin: 0;
  max-width: 64ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
  color: var(--text-soft);
}

.page-faq__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin: 6px 0 0;
  padding: 0;
  list-style: none;
  font-size: 14px;
  color: var(--haze);
}

.page-faq__facts li {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
}

.page-faq__facts .mono {
  font-size: 19px;
  color: var(--amber);
  letter-spacing: -0.01em;
}

/* ---------- 主体栅格 ---------- */

.page-faq__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 44px);
  padding-top: clamp(26px, 4vw, 46px);
  align-items: start;
}

/* ---------- 左侧分类栏 ---------- */

.page-faq__side {
  min-width: 0;
}

.faq-cats {
  display: flex;
  gap: 8px;
  margin: 12px 0 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.faq-cats::-webkit-scrollbar {
  display: none;
}

.faq-cat {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
  padding: 10px 15px;
  background: var(--panel);
  color: var(--text-soft);
  font-size: 14px;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  clip-path: polygon(
    0 0,
    calc(100% - var(--faq-cut)) 0,
    100% var(--faq-cut),
    100% 100%,
    var(--faq-cut) 100%,
    0 calc(100% - var(--faq-cut))
  );
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.faq-cat__n {
  font-size: 12px;
  color: var(--haze);
  transition: color var(--dur) var(--ease);
}

.faq-cat:hover,
.faq-cat:focus-visible {
  background: var(--moss);
  color: var(--bone);
}

.faq-cat.is-active {
  background: var(--moss);
  color: var(--bone);
  box-shadow: inset 3px 0 0 var(--amber);
}

.faq-cat.is-active .faq-cat__n {
  color: var(--amber);
}

.page-faq__aside {
  margin-top: 22px;
  display: grid;
  gap: 10px;
}

.page-faq__aside-title {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 16px;
  color: var(--bone);
}

.page-faq__aside-text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(244, 241, 232, 0.82);
}

.page-faq__aside .btn {
  justify-self: start;
}

/* ---------- 右侧问答流 ---------- */

.page-faq__stream {
  display: grid;
  gap: clamp(32px, 4.6vw, 54px);
  min-width: 0;
}

.faq-sec {
  display: grid;
  min-width: 0;
}

.faq-sec__head {
  display: grid;
  gap: 8px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 6px;
}

.faq-sec__no {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--clay);
}

.faq-sec h2 {
  margin: 0;
  font-family: var(--font-sans);
  font-size: clamp(21px, 2.5vw, 28px);
  font-weight: 700;
  line-height: 1.28;
  letter-spacing: -0.015em;
  color: var(--text);
}

.faq-sec__desc {
  margin: 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--text-soft);
}

/* ---------- 问答条目 ---------- */

.faq-item {
  background: var(--panel);
  margin-top: 10px;
  clip-path: polygon(
    0 0,
    calc(100% - var(--faq-cut)) 0,
    100% var(--faq-cut),
    100% 100%,
    var(--faq-cut) 100%,
    0 calc(100% - var(--faq-cut))
  );
  transition: background var(--dur) var(--ease);
}

.faq-item:hover {
  background: #191f18;
}

.faq-item[open] {
  background: #191f18;
}

.faq-item__q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: start;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  color: var(--text-soft);
  transition: color var(--dur) var(--ease);
}

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

.faq-item__q::marker {
  content: "";
}

.faq-item__q:hover,
.faq-item[open] .faq-item__q {
  color: var(--bone);
}

.faq-item__no {
  padding-top: 3px;
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--clay);
  transition: color var(--dur) var(--ease);
}

.faq-item[open] .faq-item__no {
  color: var(--lime);
}

.faq-item__text {
  font-size: clamp(15px, 1.6vw, 16.5px);
  font-weight: 500;
  line-height: 1.6;
  letter-spacing: -0.01em;
}

.faq-item__mark {
  position: relative;
  width: 14px;
  height: 14px;
  margin-top: 5px;
}

.faq-item__mark::before,
.faq-item__mark::after {
  content: "";
  position: absolute;
  background: currentColor;
  opacity: 0.75;
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.faq-item__mark::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.faq-item__mark::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
}

.faq-item[open] .faq-item__mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.faq-item[open] .faq-item__mark::before {
  background: var(--lime);
  opacity: 1;
}

.faq-item__a {
  padding: 0 18px 22px;
  border-top: 1px solid var(--line);
  padding-top: 16px;
}

.faq-item__a > *:first-child {
  margin-top: 0;
}

.faq-item__a p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-soft);
}

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

/* 编号步骤 */

.faq-steps {
  display: grid;
  gap: 10px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: faqstep;
}

.faq-steps li {
  counter-increment: faqstep;
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr);
  gap: 10px;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--text-soft);
}

.faq-steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--amber);
}

/* 章节配图 */

.faq-sec__figure {
  margin-top: 18px;
}

.faq-sec__figure img {
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 联系前准备 ---------- */

.faq-closing {
  display: grid;
  gap: 20px;
  padding: clamp(22px, 3.4vw, 34px);
  background: linear-gradient(150deg, rgba(62, 92, 70, 0.42) 0%, rgba(20, 23, 18, 0.9) 62%);
  border-left: 3px solid var(--signal);
  clip-path: polygon(
    0 0,
    calc(100% - 22px) 0,
    100% 22px,
    100% 100%,
    22px 100%,
    0 calc(100% - 22px)
  );
}

.faq-closing__head {
  display: grid;
  gap: 10px;
}

.faq-closing__head h2 {
  margin: 0;
  font-family: var(--font-sans);
  font-size: clamp(21px, 2.5vw, 29px);
  font-weight: 700;
  line-height: 1.28;
  letter-spacing: -0.015em;
  color: var(--text);
}

.faq-closing__lead {
  margin: 0;
  max-width: 60ch;
  font-size: 14.5px;
  line-height: 1.74;
  color: var(--text-soft);
}

.faq-ready {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.faq-ready__item {
  display: grid;
  gap: 7px;
  padding: 16px 18px;
  background: rgba(12, 31, 26, 0.72);
  border-top: 1px solid var(--line);
  clip-path: polygon(
    0 0,
    calc(100% - 12px) 0,
    100% 12px,
    100% 100%,
    0 100%
  );
}

.faq-ready__no {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--clay);
}

.faq-ready__item h3 {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--bone);
}

.faq-ready__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--text-soft);
}

.faq-closing__foot {
  display: grid;
  gap: 14px;
  padding-top: 4px;
  border-top: 1px solid var(--line);
}

.faq-closing__note {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.72;
  color: var(--haze);
}

.faq-closing__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 断点 ---------- */

@media (min-width: 700px) {
  .faq-ready {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-faq__layout {
    grid-template-columns: var(--faq-side-w) minmax(0, 1fr);
    gap: clamp(32px, 4.4vw, 56px);
  }

  .page-faq__side {
    position: sticky;
    top: calc(var(--header-h-sm) + 22px);
  }

  .faq-cats {
    flex-direction: column;
    overflow: visible;
    padding-bottom: 0;
  }

  .faq-cat {
    width: 100%;
    justify-content: space-between;
    white-space: normal;
  }

  .faq-item__q {
    padding: 18px 22px;
    gap: 16px;
  }

  .faq-item__a {
    padding: 18px 22px 26px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .faq-cat,
  .faq-item,
  .faq-item__q,
  .faq-item__no,
  .faq-item__mark::before,
  .faq-item__mark::after {
    transition-duration: 0.01ms;
  }
}