.page-faq {
  display: block;
  color: var(--rice);
}

.page-faq [id] {
  scroll-margin-top: calc(var(--header-nav-h) + 28px);
}

.page-faq .crumbs {
  padding-top: clamp(18px, 3vw, 30px);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding: clamp(22px, 4vw, 46px) 0 clamp(42px, 6vw, 80px);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  z-index: 0;
  top: -20%;
  right: -14%;
  width: 62%;
  height: 156%;
  background: linear-gradient(158deg, rgba(255, 74, 28, 0.14), rgba(58, 224, 200, 0.05) 54%, transparent 76%);
  clip-path: polygon(24% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.page-faq .faq-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(26px, 4vw, 52px);
  align-items: center;
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-size: clamp(27px, 4.4vw, 48px);
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--rice);
}

.page-faq .faq-hero__lede {
  margin: 18px 0 0;
  max-width: 44ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--rice-soft);
}

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

.page-faq .faq-hero__media {
  margin: 0;
  border: 1px solid var(--stone);
  border-radius: var(--radius);
  background: var(--panel);
  overflow: hidden;
}

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

/* ---------- 规则四板块 ---------- */

.page-faq .faq-rules {
  padding-bottom: clamp(48px, 7vw, 96px);
}

.page-faq .faq-rules__intro {
  margin: 14px 0 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .rule-blocks {
  list-style: none;
  margin: clamp(26px, 4vw, 44px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--stone);
  border: 1px solid var(--stone);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-faq .rule-block {
  position: relative;
  background: var(--panel);
  padding: clamp(22px, 3vw, 32px);
  transition: background var(--dur) var(--ease);
}

.page-faq .rule-block::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--blaze);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--dur) var(--ease);
}

.page-faq .rule-block:hover::before,
.page-faq .rule-block:focus-within::before {
  transform: scaleY(1);
}

.page-faq .rule-block__no {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-serif);
  font-size: 38px;
  line-height: 1;
  color: var(--clay);
}

.page-faq .rule-block__title {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--rice);
}

.page-faq .rule-block__body {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 问答主体 ---------- */

.page-faq .faq-body {
  padding-bottom: clamp(56px, 8vw, 108px);
}

.page-faq .faq-body__grid {
  display: grid;
  gap: clamp(28px, 4vw, 56px);
}

.page-faq .faq-index {
  border-top: 1px solid var(--stone);
  padding-top: 16px;
}

.page-faq .faq-index__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
}

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

.page-faq .faq-index__list a {
  display: block;
  padding: 9px 12px;
  border-left: 2px solid transparent;
  font-size: 14px;
  line-height: 1.5;
  color: var(--rice-soft);
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  border-left-color: var(--blaze);
  color: var(--rice);
}

.page-faq .faq-group {
  margin-bottom: clamp(46px, 7vw, 84px);
}

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

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--stone);
  margin-bottom: 22px;
}

.page-faq .faq-group__no {
  font-family: var(--font-serif);
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1;
  color: var(--clay);
  flex: none;
}

.page-faq .faq-group__head h2 {
  margin: 0;
  font-size: clamp(20px, 2.4vw, 27px);
  font-weight: 800;
  line-height: 1.35;
  color: var(--rice);
}

.page-faq .faq-group__lede {
  margin: 0 0 22px;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--rice-soft);
}

.page-faq .faq-group__note {
  margin: 20px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 四档权益 ---------- */

.page-faq .tier-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--stone);
  border: 1px solid var(--stone);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-faq .tier-item {
  background: var(--panel);
  padding: 20px 22px;
  border-top: 2px solid transparent;
  transition: border-color var(--dur) var(--ease);
}

.page-faq .tier-item:nth-child(1) {
  border-top-color: var(--moss);
}

.page-faq .tier-item:nth-child(2) {
  border-top-color: var(--cyan);
}

.page-faq .tier-item:nth-child(3) {
  border-top-color: var(--clay);
}

.page-faq .tier-item:nth-child(4) {
  border-top-color: var(--blaze);
}

.page-faq .tier-item__rank {
  margin: 0 0 10px;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--rice);
}

.page-faq .tier-item__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 折叠问答 ---------- */

.page-faq .faq-items {
  border-top: 1px solid var(--stone);
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--stone);
}

.page-faq .faq-item summary {
  position: relative;
  list-style: none;
  cursor: pointer;
  padding: 19px 44px 19px 16px;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.65;
  color: var(--rice);
  transition: color var(--dur) var(--ease);
}

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

.page-faq .faq-item summary::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--blaze);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--dur) var(--ease);
}

.page-faq .faq-item summary::after {
  content: "";
  position: absolute;
  right: 10px;
  top: 50%;
  width: 11px;
  height: 11px;
  border-right: 1.5px solid var(--mist);
  border-bottom: 1.5px solid var(--mist);
  transform: translateY(-70%) rotate(45deg);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-item summary:hover {
  color: var(--cyan);
}

.page-faq .faq-item[open] summary::before {
  transform: scaleY(1);
}

.page-faq .faq-item[open] summary::after {
  transform: translateY(-30%) rotate(-135deg);
  border-color: var(--blaze);
}

.page-faq .faq-item__body {
  padding: 0 44px 22px 16px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--rice-soft);
}

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

.page-faq .faq-item__body p + p {
  margin-top: 10px;
}

/* ---------- 设备配图 ---------- */

.page-faq .faq-device__media {
  margin: 0 0 24px;
  border: 1px solid var(--stone);
  border-radius: var(--radius);
  background: var(--panel);
  overflow: hidden;
}

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

/* ---------- 数字与链接 ---------- */

.page-faq .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 0.96em;
  color: var(--rice);
  border-bottom: 1px solid var(--cyan-soft);
  padding-bottom: 1px;
}

.page-faq .text-link {
  color: var(--cyan);
}

/* ---------- 兜底求助 ---------- */

.page-faq .faq-group--help {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--stone);
  border-radius: var(--radius);
  padding: clamp(24px, 3.4vw, 40px);
  overflow: hidden;
}

.page-faq .faq-group--help::after {
  content: "";
  position: absolute;
  right: -60px;
  bottom: -70px;
  width: 220px;
  height: 220px;
  border: 1px solid var(--blaze);
  border-radius: 50%;
  opacity: 0.22;
  pointer-events: none;
}

.page-faq .faq-group--help .faq-group__head {
  position: relative;
  z-index: 1;
}

.page-faq .faq-group--help .faq-group__lede {
  position: relative;
  z-index: 1;
}

.page-faq .help-paths {
  list-style: none;
  margin: 0 0 26px;
  padding: 0;
  display: grid;
  gap: 20px;
  position: relative;
  z-index: 1;
}

.page-faq .help-paths h3 {
  margin: 0 0 8px;
  font-size: 15px;
  font-weight: 700;
  color: var(--blaze);
}

.page-faq .help-paths p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--rice-soft);
}

.page-faq .faq-group--help .btn {
  position: relative;
  z-index: 1;
}

/* ---------- 响应式 ---------- */

@media (min-width: 700px) {
  .page-faq .rule-blocks {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .tier-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .help-paths {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  }

  .page-faq .faq-body__grid {
    grid-template-columns: 250px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-nav-h) + 26px);
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 2px;
  }
}

@media (min-width: 1100px) {
  .page-faq .rule-blocks {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .tier-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq * {
    transition-duration: 0.01ms !important;
  }
}