.page-faq {
  --faq-ink: rgba(22, 37, 90, .78);
  --faq-hair: rgba(22, 37, 90, .16);
  --faq-deep-ink: rgba(255, 255, 255, .82);
  display: block;
  background: var(--c-paper);
  color: var(--c-indigo);
  font-family: var(--font-body);
  line-height: 1.75;
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 34px 0 58px;
  background:
    radial-gradient(circle at 88% 12%, rgba(43, 217, 207, .20), transparent 46%),
    linear-gradient(158deg, var(--c-indigo) 0%, var(--c-indigo-deep) 88%);
  color: var(--c-white);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: -30%;
  right: -12%;
  width: 46%;
  height: 170%;
  background: linear-gradient(180deg, rgba(240, 180, 41, .16), rgba(240, 180, 41, 0) 72%);
  transform: skewX(-12deg);
  pointer-events: none;
}

.page-faq .faq-hero > .shell {
  position: relative;
  z-index: 1;
}

.page-faq .crumbs {
  margin: 0 0 28px;
  font-size: var(--t-14);
}

.page-faq .crumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .crumbs li {
  color: rgba(255, 255, 255, .58);
  letter-spacing: .02em;
}

.page-faq .crumbs li + li::before {
  content: "/";
  margin: 0 12px;
  color: rgba(255, 255, 255, .3);
}

.page-faq .crumbs a {
  color: var(--c-gold);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-faq .crumbs a:hover,
.page-faq .crumbs a:focus-visible {
  border-bottom-color: var(--c-gold);
}

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

.page-faq .faq-hero__kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: var(--t-12);
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--c-cyan);
}

.page-faq .faq-hero h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-size: clamp(36px, 8vw, 64px);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -.02em;
  color: var(--c-white);
}

.page-faq .faq-hero h1::after {
  content: "";
  display: block;
  width: 86px;
  height: 6px;
  margin-top: 16px;
  background: var(--c-gold);
}

.page-faq .faq-hero__intro {
  margin: 0 0 26px;
  max-width: 56ch;
  font-size: var(--t-17);
  line-height: 1.8;
  color: var(--faq-deep-ink);
}

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

.page-faq .faq-hero__figure {
  position: relative;
  margin: 0;
  border: 2px solid var(--c-gold);
  box-shadow: var(--shadow-gold);
  background: var(--c-indigo-deep);
  overflow: hidden;
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

.page-faq .faq-hero__figure figcaption {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 6px 14px;
  background: var(--c-gold);
  color: var(--c-indigo);
  font-family: var(--font-mono);
  font-size: var(--t-12);
  letter-spacing: .22em;
}

/* ---------- 问答看板 ---------- */
.page-faq .faq-board {
  position: relative;
  padding: 58px 0 74px;
  background: var(--c-paper);
}

.page-faq .faq-board::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 7px;
  background: linear-gradient(90deg,
    var(--c-gold) 0 30%,
    var(--c-cyan) 30% 55%,
    var(--c-orange) 55% 74%,
    var(--c-indigo) 74% 100%);
}

.page-faq .faq-board::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: min(420px, 62%);
  height: 180px;
  background: linear-gradient(115deg, rgba(22, 37, 90, .07), rgba(22, 37, 90, 0) 70%);
  clip-path: polygon(0 0, 72% 0, 0 100%);
  pointer-events: none;
}

.page-faq .faq-board > .shell {
  position: relative;
  z-index: 1;
}

.page-faq .faq-board__head {
  max-width: 66ch;
  margin-bottom: 38px;
}

.page-faq .section-number {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: var(--t-14);
  letter-spacing: .3em;
  color: var(--c-orange);
}

.page-faq .faq-board__head h2 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(28px, 5vw, 44px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -.02em;
  color: var(--c-indigo);
}

.page-faq .faq-board__head p {
  margin: 0;
  font-size: var(--t-17);
  line-height: 1.78;
  color: var(--faq-ink);
}

/* ---------- 分类磁贴 ---------- */
.page-faq .faq-tiles {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 52px;
}

.page-faq .faq-tile {
  position: relative;
  display: block;
  width: 100%;
  padding: 18px 16px 16px;
  text-align: left;
  background: var(--c-white);
  color: var(--c-indigo);
  border: 2px solid var(--c-indigo);
  box-shadow: var(--shadow-2);
  cursor: pointer;
  font: inherit;
  line-height: 1.5;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease, background-color .18s ease, color .18s ease;
}

.page-faq .faq-tile:hover {
  transform: translate(-2px, -2px);
  border-color: var(--c-gold);
  box-shadow: 6px 6px 0 var(--c-gold);
}

.page-faq .faq-tile:focus-visible {
  outline: 3px solid var(--c-cyan);
  outline-offset: 2px;
}

.page-faq .faq-tile[aria-pressed="true"] {
  background: var(--c-indigo);
  color: var(--c-white);
  border-color: var(--c-gold);
  box-shadow: 6px 6px 0 var(--c-gold);
}

.page-faq .faq-tile__count {
  position: absolute;
  top: 10px;
  right: 12px;
  font-family: var(--font-mono);
  font-size: var(--t-14);
  letter-spacing: .08em;
  color: var(--c-orange);
}

.page-faq .faq-tile[aria-pressed="true"] .faq-tile__count {
  color: var(--c-gold-hi);
}

.page-faq .faq-tile__name {
  display: block;
  padding-right: 38px;
  font-size: var(--t-17);
  font-weight: 700;
  letter-spacing: -.01em;
}

.page-faq .faq-tile__hint {
  display: none;
  margin-top: 6px;
  font-size: var(--t-12);
  letter-spacing: .02em;
  color: rgba(22, 37, 90, .6);
}

.page-faq .faq-tile[aria-pressed="true"] .faq-tile__hint {
  color: rgba(255, 255, 255, .66);
}

/* ---------- 问题分组 ---------- */
.page-faq .faq-groups {
  display: grid;
  gap: 46px;
}

.page-faq .faq-group {
  scroll-margin-top: 90px;
}

.page-faq .faq-group[hidden] {
  display: none;
}

.page-faq .faq-group__head {
  position: relative;
  padding-left: 58px;
  margin-bottom: 20px;
}

.page-faq .faq-group__num {
  position: absolute;
  left: 0;
  top: 6px;
  padding-bottom: 4px;
  font-family: var(--font-mono);
  font-size: var(--t-22);
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--c-gold);
  border-bottom: 3px solid var(--c-gold);
}

.page-faq .faq-group__head h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(22px, 3.4vw, 30px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -.015em;
  color: var(--c-indigo);
}

.page-faq .faq-group__desc {
  margin: 0;
  max-width: 58ch;
  font-size: var(--t-17);
  line-height: 1.72;
  color: var(--faq-ink);
}

.page-faq .faq-group__media {
  margin: 20px 0 0;
  max-width: 480px;
  border: 2px solid var(--c-indigo);
  box-shadow: var(--shadow-2);
  background: var(--c-indigo-deep);
  overflow: hidden;
}

.page-faq .faq-group__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-group__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 2px solid var(--c-indigo);
}

.page-faq .faq-group__list > li {
  margin: 0;
}

.page-faq .faq-item {
  border-bottom: 2px solid var(--faq-hair);
  transition: background-color .2s ease, border-color .2s ease;
}

.page-faq .faq-item[open] {
  background: rgba(255, 255, 255, .72);
  border-bottom-color: var(--c-gold);
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 14px 18px 4px;
  cursor: pointer;
  list-style: none;
  font-size: var(--t-17);
  font-weight: 600;
  line-height: 1.6;
  color: var(--c-indigo);
}

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

.page-faq .faq-item > summary:focus-visible {
  outline: 3px solid var(--c-cyan);
  outline-offset: -3px;
}

.page-faq .faq-item__plus {
  position: relative;
  flex: 0 0 20px;
  width: 20px;
  height: 20px;
  margin-top: 5px;
  border: 2px solid var(--c-indigo);
  transition: transform .22s ease, background-color .22s ease, border-color .22s ease;
}

.page-faq .faq-item__plus::before,
.page-faq .faq-item__plus::after {
  content: "";
  position: absolute;
  background: var(--c-indigo);
  transition: background-color .22s ease;
}

.page-faq .faq-item__plus::before {
  left: 50%;
  top: 3px;
  bottom: 3px;
  width: 2px;
  transform: translateX(-50%);
}

.page-faq .faq-item__plus::after {
  top: 50%;
  left: 3px;
  right: 3px;
  height: 2px;
  transform: translateY(-50%);
}

.page-faq .faq-item[open] .faq-item__plus {
  transform: rotate(45deg);
  border-color: var(--c-gold);
  background: var(--c-gold);
}

.page-faq .faq-item[open] .faq-item__plus::before,
.page-faq .faq-item[open] .faq-item__plus::after {
  background: var(--c-indigo-deep);
}

.page-faq .faq-item__a {
  padding: 0 16px 20px 38px;
  animation: faq-drop .22s ease both;
}

@keyframes faq-drop {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.page-faq .faq-item__a p {
  margin: 0 0 10px;
  font-size: var(--t-17);
  line-height: 1.8;
  color: var(--faq-ink);
}

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

.page-faq .faq-item__a a {
  color: var(--c-indigo);
  text-decoration: none;
  border-bottom: 2px solid var(--c-gold);
}

.page-faq .faq-item__a a:hover,
.page-faq .faq-item__a a:focus-visible {
  color: var(--c-orange);
  border-bottom-color: var(--c-orange);
}

.page-faq .ui {
  font-family: var(--font-mono);
  font-size: .92em;
  padding: 1px 6px;
  background: rgba(43, 217, 207, .16);
  border-bottom: 1px solid rgba(43, 217, 207, .55);
  color: var(--c-indigo);
  font-variant-numeric: tabular-nums;
}

/* ---------- 分流区块 ---------- */
.page-faq .faq-help {
  position: relative;
  overflow: hidden;
  padding: 62px 0 78px;
  background:
    radial-gradient(circle at 84% 16%, rgba(43, 217, 207, .18), transparent 50%),
    linear-gradient(150deg, var(--c-indigo) 0%, var(--c-indigo-deep) 82%);
  color: var(--c-white);
}

.page-faq .faq-help__panel {
  position: relative;
  padding: 30px 22px 34px;
  border: 2px solid var(--c-gold);
  box-shadow: var(--shadow-gold);
  background: rgba(11, 18, 48, .5);
}

.page-faq .faq-help__main h2 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(26px, 4.6vw, 40px);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -.02em;
  color: var(--c-white);
}

.page-faq .faq-help__main p {
  margin: 0;
  max-width: 52ch;
  font-size: var(--t-17);
  line-height: 1.8;
  color: rgba(255, 255, 255, .84);
}

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

.page-faq .faq-help__meta li {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  font-size: var(--t-17);
  color: var(--c-white);
}

.page-faq .faq-help__key {
  font-family: var(--font-mono);
  font-size: var(--t-12);
  letter-spacing: .2em;
  color: var(--c-cyan);
}

.page-faq .faq-help__val {
  word-break: break-word;
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-hero {
    padding: 44px 0 68px;
  }

  .page-faq .faq-tiles {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-tile__hint {
    display: block;
  }

  .page-faq .faq-help__panel {
    padding: 36px 30px 40px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: 52px 0 80px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    gap: 52px;
    align-items: center;
  }

  .page-faq .faq-help__panel {
    display: grid;
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: 44px;
    align-items: start;
    padding: 42px 44px 46px;
  }

  .page-faq .faq-help__actions {
    margin-top: 6px;
    flex-direction: column;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-board {
    padding: 72px 0 92px;
  }

  .page-faq .faq-tiles {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
  }

  .page-faq .faq-groups {
    gap: 58px;
  }

  .page-faq .faq-group {
    display: grid;
    grid-template-columns: minmax(0, 320px) minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

  .page-faq .faq-group__head {
    padding-left: 0;
    margin-bottom: 0;
  }

  .page-faq .faq-group__num {
    position: static;
    display: inline-block;
    margin-bottom: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__a {
    animation: none;
  }

  .page-faq .faq-tile,
  .page-faq .faq-item__plus {
    transition: none;
  }

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