.page-faq {
  --faq-shell-pad: 20px;
  --faq-gap: 16px;
  background: var(--ink);
  color: var(--white);
  overflow-x: hidden;
}

.page-faq .container {
  position: relative;
  z-index: 1;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 26px 0 44px;
  background:
    radial-gradient(680px 400px at 90% -12%, rgba(43, 229, 138, .20), transparent 68%),
    radial-gradient(520px 340px at 2% 6%, rgba(111, 227, 210, .12), transparent 72%),
    linear-gradient(165deg, var(--ink-deep), var(--ink) 46%, var(--ink-2));
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -14%;
  bottom: -46%;
  width: 300px;
  height: 300px;
  border-radius: 72px;
  background: linear-gradient(135deg, rgba(43, 229, 138, .26), rgba(43, 229, 138, 0));
  transform: rotate(18deg);
  pointer-events: none;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 30px;
  margin-top: 24px;
}

.page-faq .faq-hero__lead h1 {
  margin: 14px 0 16px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 8.4vw, 58px);
  line-height: .98;
  letter-spacing: -.02em;
}

.page-faq .faq-hero__lead p {
  margin: 0;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--gray-blue);
}

.page-faq .faq-hero__facts {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  padding-top: 4px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-hero__facts .stat {
  padding: 14px 16px;
  border-radius: var(--radius-md);
  background: rgba(20, 48, 79, .68);
  border: 1px solid var(--line);
}

.page-faq .stat__value {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 34px;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.page-faq .stat--gold .stat__value { color: var(--yellow); }
.page-faq .stat--warn .stat__value { color: var(--orange); }
.page-faq .stat--teal .stat__value { color: var(--teal); }

.page-faq .stat__label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--gray-blue);
}

/* ---------- 快速入口 ---------- */
.page-faq .faq-filter {
  padding: 20px 0 22px;
  background: var(--ink-2);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-filter__bar {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-faq .faq-filter__title {
  margin: 0;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--gray-blue);
  text-transform: uppercase;
}

.page-faq .faq-search {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.page-faq .faq-search__label {
  flex: 0 0 auto;
  font-size: 13px;
  color: var(--green-mist);
  letter-spacing: .08em;
}

.page-faq .faq-search__input {
  flex: 1 1 auto;
  min-width: 0;
  padding: 10px 16px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line-strong);
  background: var(--ink-deep);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 15px;
  outline: none;
  transition: border-color .25s var(--ease), box-shadow .25s var(--ease);
}

.page-faq .faq-search__input::placeholder {
  color: rgba(159, 179, 200, .7);
}

.page-faq .faq-search__input:focus-visible {
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(43, 229, 138, .18);
}

.page-faq .chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .chip-row .chip {
  font-variant-numeric: tabular-nums;
}

/* ---------- 区块 ---------- */
.page-faq .faq-block {
  padding: 54px 0;
}

.page-faq .faq-block--panel {
  background: linear-gradient(180deg, var(--ink) 0%, #0d2544 40%, var(--ink) 100%);
}

.page-faq .faq-block--paper {
  background: var(--paper);
  color: var(--ink);
}

.page-faq .faq-block__head {
  max-width: 46em;
  margin-bottom: 30px;
}

.page-faq .faq-block__head .chapter {
  margin: 0 0 12px;
}

.page-faq .faq-block__head h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 6.4vw, 40px);
  line-height: 1.06;
  letter-spacing: -.015em;
}

.page-faq .faq-block__head .prose {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--gray-blue);
}

.page-faq .faq-block--paper .faq-block__head .prose,
.page-faq .faq-block--paper .faq-block__head .chapter {
  color: rgba(11, 31, 58, .74);
}

.page-faq .faq-block--paper .chapter__num {
  background: var(--ink);
  color: var(--paper);
}

.page-faq .faq-block__split {
  display: grid;
  gap: 26px;
}

.page-faq .faq-list {
  display: grid;
  gap: var(--faq-gap);
  align-content: start;
}

/* ---------- 问答卡片 ---------- */
.page-faq .qa {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--ink-2);
  overflow: hidden;
  transition: border-color .28s var(--ease), background .28s var(--ease);
}

.page-faq .qa[open] {
  border-color: rgba(43, 229, 138, .5);
  background: #16365a;
}

.page-faq .qa__summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 18px 18px 18px 16px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa__index {
  flex: 0 0 auto;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  background: rgba(255, 209, 102, .16);
  color: var(--yellow);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .1em;
  font-variant-numeric: tabular-nums;
}

.page-faq .qa__q {
  flex: 1 1 auto;
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--white);
}

.page-faq .qa__mark {
  position: relative;
  flex: 0 0 26px;
  width: 26px;
  height: 26px;
  margin-top: 2px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  transition: border-color .28s var(--ease), transform .28s var(--ease);
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--green);
  border-radius: 2px;
  transform: translate(-50%, -50%);
  transition: transform .3s var(--ease), opacity .25s var(--ease);
}

.page-faq .qa__mark::before { width: 12px; height: 2px; }
.page-faq .qa__mark::after { width: 2px; height: 12px; }

.page-faq .qa[open] .qa__mark {
  border-color: var(--green);
}

.page-faq .qa[open] .qa__mark::after {
  transform: translate(-50%, -50%) rotate(90deg);
  opacity: 0;
}

.page-faq .qa__body {
  padding: 0 18px 20px 18px;
  border-top: 1px solid var(--line);
  margin-top: 0;
  padding-top: 16px;
}

.page-faq .qa__body p {
  margin: 0 0 10px;
  font-size: 15.5px;
  line-height: 1.82;
  color: var(--gray-blue);
  max-width: 40em;
}

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

.page-faq .faq-block--paper .qa {
  background: var(--white);
  border-color: rgba(11, 31, 58, .12);
}

.page-faq .faq-block--paper .qa[open] {
  border-color: rgba(11, 31, 58, .3);
  background: var(--white);
}

.page-faq .faq-block--paper .qa__index {
  background: rgba(11, 31, 58, .08);
  color: var(--ink);
}

.page-faq .faq-block--paper .qa__q {
  color: var(--ink);
}

.page-faq .faq-block--paper .qa__mark {
  border-color: rgba(11, 31, 58, .22);
}

.page-faq .faq-block--paper .qa__mark::before,
.page-faq .faq-block--paper .qa__mark::after {
  background: var(--ink);
}

.page-faq .faq-block--paper .qa__body {
  border-top-color: rgba(11, 31, 58, .1);
}

.page-faq .faq-block--paper .qa__body p {
  color: rgba(11, 31, 58, .78);
}

/* ---------- 周期刻度 ---------- */
.page-faq .faq-aside {
  display: grid;
  gap: 18px;
  align-content: start;
}

.page-faq .cycle-meter {
  padding: 22px;
  border-radius: var(--radius-lg);
  background: var(--ink-2);
  border: 1px solid var(--line);
}

.page-faq .cycle-meter__cap {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--gray-blue);
}

.page-faq .cycle-meter__num {
  margin: 0;
  font-family: var(--font-display);
  font-size: 52px;
  font-weight: 800;
  line-height: 1;
  color: var(--green);
  font-variant-numeric: tabular-nums;
}

.page-faq .cycle-meter__num span {
  margin-left: 8px;
  font-size: 16px;
  color: var(--green-mist);
}

.page-faq .cycle-meter__scale {
  display: flex;
  gap: 5px;
  margin: 16px 0 14px;
}

.page-faq .cycle-meter__scale span {
  flex: 1 1 0;
  height: 30px;
  border-radius: 6px;
  background: rgba(159, 179, 200, .18);
}

.page-faq .cycle-meter__scale span:nth-child(even) { height: 22px; }
.page-faq .cycle-meter__scale span:nth-child(3n) { height: 16px; }

.page-faq .cycle-meter__scale span.is-on {
  background: var(--green);
}

.page-faq .cycle-meter__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--gray-blue);
}

.page-faq .media-frame {
  border-radius: var(--radius-lg);
  overflow: hidden;
}

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

/* ---------- 联系支持 ---------- */
.page-faq .faq-support {
  position: relative;
  display: grid;
  gap: 26px;
  padding: 26px 20px;
  border-radius: var(--radius-xl);
  border: 1px solid var(--line);
  background:
    radial-gradient(420px 240px at 96% 4%, rgba(255, 90, 54, .22), transparent 70%),
    linear-gradient(145deg, var(--ink-2), var(--ink-deep));
  overflow: hidden;
}

.page-faq .faq-support__body .chapter {
  margin: 0 0 12px;
}

.page-faq .faq-support__body h2 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 6.2vw, 38px);
  line-height: 1.06;
  letter-spacing: -.015em;
}

.page-faq .faq-support__body > .prose {
  margin: 0 0 22px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--gray-blue);
}

.page-faq .faq-support__rows {
  margin: 0 0 24px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-faq .faq-support__rows li {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  background: rgba(7, 24, 45, .62);
  border: 1px solid var(--line);
}

.page-faq .faq-support__key {
  flex: 0 0 auto;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--green-mist);
  align-self: center;
}

.page-faq .faq-support__val {
  flex: 1 1 200px;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--white);
  word-break: break-word;
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-support__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 18px;
}

.page-faq .faq-support__aside {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--gray-blue);
}

.page-faq .faq-support__aside a {
  color: var(--teal);
  text-underline-offset: 3px;
}

/* ---------- 回到顶部 ---------- */
.page-faq .faq-top {
  position: fixed;
  right: 18px;
  bottom: calc(88px + env(safe-area-inset-bottom, 0px));
  z-index: 18;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: var(--ink-2);
  color: var(--green);
  font-size: 17px;
  text-decoration: none;
  box-shadow: var(--shadow-card);
  transition: transform .25s var(--ease), border-color .25s var(--ease);
}

.page-faq .faq-top:hover,
.page-faq .faq-top:focus-visible {
  transform: translateY(-3px);
  border-color: var(--green);
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-hero {
    padding: 34px 0 62px;
  }

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

  .page-faq .faq-search {
    flex: 0 1 360px;
  }

  .page-faq .faq-search__input {
    flex: 1 1 auto;
  }

  .page-faq .faq-block {
    padding: 72px 0;
  }

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

  .page-faq .qa__summary {
    padding: 20px 22px;
    gap: 16px;
  }

  .page-faq .qa__body {
    padding: 18px 22px 22px;
  }

  .page-faq .faq-support {
    padding: 36px 32px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
    align-items: end;
    gap: 48px;
  }

  .page-faq .faq-block__split {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: 34px;
  }

  .page-faq .faq-list--two {
    gap: 18px;
  }

  .page-faq .faq-support {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    align-items: center;
    gap: 40px;
    padding: 44px 40px;
  }

  .page-faq .faq-support__media,
  .page-faq .faq-support .media-frame {
    align-self: stretch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .qa__mark,
  .page-faq .qa__mark::before,
  .page-faq .qa__mark::after,
  .page-faq .faq-top {
    transition: none;
  }

  .page-faq .faq-top:hover {
    transform: none;
  }
}