.page-faq {
  --faq-line: rgba(201, 210, 218, 0.16);
  --faq-line-soft: rgba(201, 210, 218, 0.08);
  --faq-panel: #12293d;
  --faq-gap: clamp(18px, 4vw, 32px);
  background: var(--night);
  color: var(--cream);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background: radial-gradient(130% 100% at 82% 0%, #14324c 0%, var(--night) 58%, var(--night-deep) 100%);
  padding: calc(var(--header-h) + 40px) 0 clamp(36px, 7vw, 64px);
}

.page-faq .faq-hero__media {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0.24;
}

.page-faq .faq-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 35%;
  max-width: 100%;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(180deg, rgba(11, 27, 43, 0.7) 0%, rgba(11, 27, 43, 0.92) 62%, var(--night) 100%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 2;
}

.page-faq .faq-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--fog);
  margin-bottom: 18px;
}

.page-faq .faq-crumb a {
  color: var(--fog);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-crumb a:hover,
.page-faq .faq-crumb a:focus-visible {
  color: var(--lime);
  border-color: var(--lime);
}

.page-faq .faq-crumb__sep {
  color: rgba(201, 210, 218, 0.45);
}

.page-faq .faq-crumb [aria-current="page"] {
  color: var(--cream);
}

.page-faq .faq-hero__title {
  margin: 10px 0 18px;
  font-size: clamp(36px, 9vw, 76px);
  line-height: 1.02;
  text-wrap: balance;
}

.page-faq .faq-hero__title span {
  display: block;
  color: var(--heart-soft);
}

.page-faq .faq-hero__lead {
  max-width: 56ch;
  color: var(--fog);
  font-size: clamp(15px, 2.2vw, 18px);
  line-height: 1.75;
}

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
  margin-top: 26px;
}

.page-faq .faq-stat {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--pill);
  border: 1px solid var(--faq-line);
  background: rgba(18, 41, 61, 0.72);
  backdrop-filter: blur(2px);
}

.page-faq .faq-stat__num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 20px;
  font-weight: 700;
  color: var(--lime);
  letter-spacing: -0.01em;
}

.page-faq .faq-stat__text {
  font-size: 13px;
  color: var(--fog);
}

/* ---------- 分类索引 ---------- */
.page-faq .faq-index {
  padding: clamp(32px, 6vw, 56px) 0 clamp(8px, 2vw, 16px);
}

.page-faq .faq-index__head {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 20px;
}

.page-faq .faq-cats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  padding-bottom: 6px;
}

.page-faq .faq-cat {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 18px 16px;
  border-radius: var(--radius);
  background: var(--cream);
  color: var(--ink);
  text-decoration: none;
  overflow: hidden;
  transition: transform 0.26s var(--ease), box-shadow 0.26s var(--ease);
}

.page-faq .faq-cat::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--heart);
}

.page-faq .faq-cat:nth-child(2)::before { background: var(--stand); }
.page-faq .faq-cat:nth-child(3)::before { background: var(--grass); }
.page-faq .faq-cat:nth-child(4)::before { background: var(--indigo); }
.page-faq .faq-cat:nth-child(5)::before { background: var(--wine); }

.page-faq .faq-cat:hover,
.page-faq .faq-cat:focus-visible {
  transform: translateY(-4px);
  box-shadow: 0 22px 38px -26px rgba(0, 0, 0, 0.95);
}

.page-faq .faq-cat.is-active {
  box-shadow: inset 0 0 0 2px var(--heart), 0 22px 38px -26px rgba(0, 0, 0, 0.95);
}

.page-faq .faq-cat__no {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: rgba(16, 19, 23, 0.5);
}

.page-faq .faq-cat__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: -0.01em;
  line-height: 1.2;
}

.page-faq .faq-cat__desc {
  font-size: 13px;
  line-height: 1.6;
  color: rgba(16, 19, 23, 0.68);
}

.page-faq .faq-cat__count {
  margin-top: 4px;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  color: var(--grass);
}

/* ---------- 分组堆叠 ---------- */
.page-faq .faq-stack {
  display: grid;
  gap: var(--faq-gap);
  padding-top: clamp(24px, 5vw, 44px);
  padding-bottom: clamp(36px, 7vw, 72px);
}

.page-faq .faq-group {
  position: relative;
  background: var(--faq-panel);
  border: 1px solid var(--faq-line-soft);
  border-radius: var(--radius-lg);
  padding: clamp(20px, 4.5vw, 40px);
  scroll-margin-top: calc(var(--header-h) + 16px);
}

.page-faq .faq-group--help {
  background: linear-gradient(160deg, #14563a 0%, var(--grass) 58%, #176b45 100%);
  border-color: rgba(245, 241, 232, 0.18);
}

.page-faq .faq-group__head {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: clamp(18px, 3vw, 26px);
}

.page-faq .faq-group__idx {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--stand);
}

.page-faq .faq-group--help .faq-group__idx {
  color: var(--lime);
}

.page-faq .faq-group__lead {
  max-width: 62ch;
  color: var(--fog);
  font-size: 15.5px;
  line-height: 1.75;
}

.page-faq .faq-group--help .faq-group__lead {
  color: rgba(245, 241, 232, 0.86);
}

/* ---------- 四步流程 ---------- */
.page-faq .faq-flow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 12px 14px;
  margin-bottom: 20px;
  border-radius: var(--pill);
  border: 1px dashed var(--faq-line);
  background: rgba(11, 27, 43, 0.45);
}

.page-faq .faq-flow__node {
  font-size: 13px;
  color: var(--cream);
  white-space: nowrap;
}

.page-faq .faq-flow__arrow {
  color: var(--heart-soft);
  flex: none;
}

/* ---------- 步骤卡 ---------- */
.page-faq .faq-split {
  display: grid;
  gap: 20px;
}

.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-step {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 12px;
  padding: 16px 16px 16px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--faq-line-soft);
  background: rgba(245, 241, 232, 0.045);
  transition: border-color 0.24s var(--ease), background 0.24s var(--ease);
}

.page-faq .faq-step:hover {
  border-color: var(--faq-line);
  background: rgba(245, 241, 232, 0.07);
}

.page-faq .faq-step__num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 30px;
  line-height: 1;
  font-weight: 700;
  color: var(--lime);
  letter-spacing: -0.02em;
}

.page-faq .faq-group--help .faq-step__num {
  color: var(--night-deep);
}

.page-faq .faq-step__concl {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.4;
  letter-spacing: -0.005em;
  color: var(--cream);
  margin: 0 0 6px;
}

.page-faq .faq-step__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--fog);
}

.page-faq .faq-group--help .faq-step {
  background: rgba(11, 27, 43, 0.24);
  border-color: rgba(245, 241, 232, 0.2);
}

.page-faq .faq-group--help .faq-step__desc {
  color: rgba(245, 241, 232, 0.88);
}

/* ---------- 插图 ---------- */
.page-faq .faq-figure {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--faq-line-soft);
  background: var(--night-deep);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 4 / 5;
  object-fit: cover;
}

.page-faq .faq-figure figcaption {
  padding: 12px 16px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--fog);
  border-top: 1px solid var(--faq-line-soft);
}

/* ---------- 提示条 ---------- */
.page-faq .faq-note {
  margin: 18px 0 0;
  padding: 14px 16px;
  border-left: 3px solid var(--stand);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: rgba(255, 122, 47, 0.08);
  font-size: 14px;
  line-height: 1.72;
  color: var(--fog);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-fold {
  margin-top: 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--faq-line-soft);
  background: rgba(11, 27, 43, 0.35);
  overflow: hidden;
}

.page-faq .faq-fold summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  line-height: 1.5;
  color: var(--cream);
  transition: background 0.2s var(--ease);
}

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

.page-faq .faq-fold summary:hover {
  background: rgba(245, 241, 232, 0.05);
}

.page-faq .faq-fold summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-num);
  font-size: 20px;
  line-height: 1;
  color: var(--lime);
  transition: transform 0.26s var(--ease);
}

.page-faq .faq-fold[open] summary::after {
  content: "−";
  transform: rotate(180deg);
}

.page-faq .faq-fold__q {
  font-weight: 500;
}

.page-faq .faq-fold__body {
  position: relative;
  padding: 0 16px 16px 24px;
}

.page-faq .faq-fold__body::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 0;
  bottom: 12px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--heart) 0%, var(--stand) 100%);
  transform: scaleY(0);
  transform-origin: top center;
}

.page-faq .faq-fold[open] .faq-fold__body::before {
  animation: faqRailIn 0.45s var(--ease) forwards;
}

@keyframes faqRailIn {
  from { transform: scaleY(0); }
  to { transform: scaleY(1); }
}

.page-faq .faq-fold__body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--fog);
}

/* ---------- 提交收尾 ---------- */
.page-faq .faq-help__foot {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
  margin-top: 22px;
  padding-top: 20px;
  border-top: 1px solid rgba(245, 241, 232, 0.24);
}

.page-faq .faq-help__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: rgba(245, 241, 232, 0.9);
  max-width: 52ch;
}

/* ---------- 相关入口 ---------- */
.page-faq .faq-more {
  padding-bottom: clamp(40px, 8vw, 80px);
  background: linear-gradient(180deg, transparent 0%, var(--night-deep) 100%);
}

.page-faq .faq-more h2 {
  margin: 0 0 16px;
}

.page-faq .faq-more__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.page-faq .faq-more__list a {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--faq-line-soft);
  background: rgba(18, 41, 61, 0.55);
  color: var(--cream);
  text-decoration: none;
  font-size: 15px;
  font-weight: 600;
  transition: border-color 0.22s var(--ease), transform 0.22s var(--ease);
}

.page-faq .faq-more__list a span {
  font-size: 13px;
  font-weight: 400;
  color: var(--fog);
}

.page-faq .faq-more__list a:hover,
.page-faq .faq-more__list a:focus-visible {
  border-color: var(--heart);
  transform: translateY(-2px);
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-cats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
    align-items: start;
    gap: 26px;
  }

  .page-faq .faq-help__foot {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .page-faq .faq-hero__inner {
    max-width: none;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-cats {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    align-items: start;
    padding-bottom: 34px;
  }

  .page-faq .faq-cat:nth-child(even) {
    transform: translateY(26px);
  }

  .page-faq .faq-cat:nth-child(even):hover,
  .page-faq .faq-cat:nth-child(even):focus-visible {
    transform: translateY(22px);
  }

  .page-faq .faq-cat:nth-child(even).is-active {
    transform: translateY(26px);
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-cat,
  .page-faq .faq-step,
  .page-faq .faq-more__list a {
    transition: none;
  }

  .page-faq .faq-fold[open] .faq-fold__body::before {
    animation: none;
    transform: scaleY(1);
  }
}