.page-faq {
  --faq-line: var(--line);
  --faq-card: var(--hull);
  --faq-ease: cubic-bezier(.22, .7, .35, 1);
  background: var(--ink);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  overflow-x: clip;
}

.page-faq .wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding-inline: 18px;
}

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

.page-faq a {
  color: var(--cyan);
  text-decoration: none;
}

.page-faq a:hover {
  color: var(--soft);
}

.page-faq .breadcrumb {
  padding-block: 18px 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--muted);
}

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

.page-faq .breadcrumb li + li::before {
  content: "/";
  margin-right: 6px;
  color: var(--faq-line);
}

.page-faq .breadcrumb a {
  color: var(--muted);
  text-decoration: none;
}

.page-faq .breadcrumb a:hover {
  color: var(--cyan);
}

/* ===== 首屏 ===== */
.page-faq .faq-hero {
  position: relative;
  padding-block: clamp(26px, 5vw, 54px) clamp(32px, 6vw, 68px);
  border-bottom: 1px solid var(--faq-line);
  isolation: isolate;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    repeating-linear-gradient(104deg, transparent 0 48px, rgba(29, 233, 255, .06) 48px 49px),
    radial-gradient(120% 90% at 88% -10%, rgba(29, 233, 255, .16), transparent 62%),
    linear-gradient(180deg, #070d1a, var(--ink));
  pointer-events: none;
}

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

.page-faq .eyebrow {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq h1 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: clamp(38px, 8.4vw, 84px);
  font-weight: 600;
  line-height: 1.04;
  letter-spacing: -.01em;
  color: var(--text);
  text-wrap: balance;
}

.page-faq .lede {
  margin: 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-hero__jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.page-faq .faq-hero__jump a {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 6px 14px;
  border: 1px solid var(--faq-line);
  background: rgba(16, 28, 50, .7);
  font-size: 13px;
  color: var(--soft);
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 0 100%);
  transition: border-color .22s var(--faq-ease), color .22s var(--faq-ease), background .22s var(--faq-ease);
}

.page-faq .faq-hero__jump a:hover,
.page-faq .faq-hero__jump a:focus-visible {
  border-color: var(--cyan);
  color: var(--ink);
  background: var(--cyan);
}

.page-faq .faq-hero__stats {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 0;
  background: var(--faq-line);
  border: 1px solid var(--faq-line);
}

.page-faq .faq-hero__stats li {
  padding: 16px 12px;
  background: rgba(11, 19, 36, .92);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-faq .faq-num {
  font-family: var(--font-mono);
  font-size: clamp(24px, 4.4vw, 40px);
  line-height: 1;
  font-weight: 700;
  color: var(--yellow);
}

.page-faq .faq-stat-label {
  font-size: 12px;
  line-height: 1.5;
  color: var(--muted);
}

/* ===== 章节标题 ===== */
.page-faq .faq-head {
  margin-bottom: 22px;
}

.page-faq .faq-head h2,
.page-faq .faq-deep__aside h2 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(26px, 4.6vw, 44px);
  font-weight: 600;
  line-height: 1.1;
  color: var(--text);
}

.page-faq .faq-sub {
  margin: 0;
  max-width: 64ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* ===== 分类磁贴 ===== */
.page-faq .faq-cats {
  padding-block: clamp(32px, 6vw, 64px);
}

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

.page-faq .cat-tile {
  position: relative;
  display: block;
  padding: 18px 18px 16px;
  border: 1px solid var(--faq-line);
  background:
    linear-gradient(160deg, rgba(29, 233, 255, .08), transparent 58%),
    var(--faq-card);
  color: var(--text);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
  transition: transform .24s var(--faq-ease), border-color .24s var(--faq-ease), background .24s var(--faq-ease);
}

.page-faq .cat-tile::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: var(--cyan);
  transform: scaleY(.32);
  transform-origin: top;
  transition: transform .28s var(--faq-ease);
}

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

.page-faq .cat-tile:hover::before,
.page-faq .cat-tile:focus-visible::before {
  transform: scaleY(1);
}

.page-faq .cat-idx {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--cyan);
  margin-bottom: 6px;
}

.page-faq .cat-name {
  display: block;
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 8px;
}

.page-faq .cat-desc {
  display: block;
  font-size: 13px;
  line-height: 1.65;
  color: var(--muted);
  margin-bottom: 12px;
}

.page-faq .cat-count {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  padding: 3px 9px;
  border: 1px solid rgba(255, 212, 71, .45);
  color: var(--yellow);
}

/* ===== 热门问题 ===== */
.page-faq .faq-hot {
  padding-block: clamp(30px, 5.4vw, 60px);
  border-block: 1px solid var(--faq-line);
  background:
    linear-gradient(180deg, rgba(16, 28, 50, .55), transparent 45%),
    var(--ink);
}

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

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

.page-faq .hot-card {
  position: relative;
  padding: 16px 18px 16px 20px;
  border: 1px solid var(--faq-line);
  background: var(--faq-card);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
}

.page-faq .hot-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--yellow), rgba(255, 212, 71, 0));
}

.page-faq .hot-q {
  display: flex;
  gap: 10px;
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  line-height: 1.35;
  color: var(--text);
}

.page-faq .hot-idx {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--yellow);
  padding-top: 4px;
}

.page-faq .hot-a p {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
}

.page-faq .hot-a ol {
  list-style: none;
  counter-reset: hotstep;
  margin: 0;
  padding: 0;
}

.page-faq .hot-a ol li {
  counter-increment: hotstep;
  position: relative;
  padding-left: 26px;
  margin-bottom: 6px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .hot-a ol li:last-child {
  margin-bottom: 0;
}

.page-faq .hot-a ol li::before {
  content: counter(hotstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--cyan);
  letter-spacing: .04em;
}

/* ===== 图片 ===== */
.page-faq .faq-figure {
  margin: 0 0 14px;
  border: 1px solid var(--faq-line);
  background: var(--faq-card);
  overflow: hidden;
}

.page-faq .faq-figure img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-faq .faq-figure figcaption {
  padding: 10px 14px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted);
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-figure--hot {
  margin: 0;
  border-left: 2px solid var(--cyan);
}

/* ===== 分类详答 ===== */
.page-faq .faq-deep {
  padding-block: clamp(30px, 5vw, 56px);
  border-bottom: 1px solid var(--faq-line);
  scroll-margin-top: 72px;
}

.page-faq .faq-deep__inner {
  display: grid;
  gap: 20px;
}

.page-faq .faq-deep__aside p {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-deep__meta {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--cyan) !important;
}

.page-faq .faq-deep__list {
  display: block;
  min-width: 0;
}

.page-faq .faq-item {
  position: relative;
  margin-bottom: 10px;
  border: 1px solid var(--faq-line);
  border-left: 2px solid var(--faq-line);
  background: var(--faq-card);
  transition: border-color .24s var(--faq-ease), background .24s var(--faq-ease);
}

.page-faq .faq-item[open] {
  border-left-color: var(--cyan);
  background:
    linear-gradient(180deg, rgba(29, 233, 255, .07), transparent 42%),
    var(--faq-card);
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: clamp(16px, 2.1vw, 19px);
  font-weight: 600;
  line-height: 1.4;
  color: var(--text);
}

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

.page-faq .faq-item > summary::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--cyan);
  padding-top: 2px;
}

.page-faq .faq-item[open] > summary::after {
  content: "\2013";
}

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-faq .faq-q-idx {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--cyan);
  padding-top: 4px;
}

.page-faq .faq-a {
  padding: 0 16px 16px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-a p {
  margin: 0 0 8px;
}

.page-faq .faq-a ol {
  list-style: none;
  counter-reset: step;
  margin: 8px 0 0;
  padding: 0;
}

.page-faq .faq-a ol li {
  counter-increment: step;
  position: relative;
  padding-left: 30px;
  margin-bottom: 7px;
}

.page-faq .faq-a ol li:last-child {
  margin-bottom: 0;
}

.page-faq .faq-a ol li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .04em;
  color: var(--green);
}

/* ===== 求助 ===== */
.page-faq .faq-help {
  padding-block: clamp(34px, 6vw, 68px);
}

.page-faq .help-panel {
  display: grid;
  gap: 24px;
  padding: clamp(22px, 4vw, 40px);
  border: 1px solid var(--faq-line);
  background:
    radial-gradient(110% 130% at 100% 0%, rgba(255, 79, 163, .12), transparent 58%),
    linear-gradient(155deg, rgba(29, 233, 255, .1), transparent 55%),
    var(--rail);
  clip-path: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 26px 100%, 0 calc(100% - 26px));
}

.page-faq .help-head h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(26px, 4.4vw, 40px);
  font-weight: 600;
  line-height: 1.14;
  color: var(--text);
}

.page-faq .help-head p {
  margin: 0 0 20px;
  max-width: 58ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .help-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .help-contact {
  margin: 0 0 16px;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--faq-line);
  border: 1px solid var(--faq-line);
}

.page-faq .help-contact > div {
  padding: 12px 14px;
  background: rgba(5, 8, 16, .72);
}

.page-faq .help-contact dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--cyan);
  margin-bottom: 3px;
}

.page-faq .help-contact dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.5;
  color: var(--text);
  word-break: break-word;
}

.page-faq .help-note {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .help-note a {
  color: var(--cyan);
  border-bottom: 1px solid rgba(29, 233, 255, .4);
}

/* ===== 滚动显现 ===== */
.js .page-faq [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .44s var(--faq-ease), transform .44s var(--faq-ease);
  transition-delay: calc(var(--i, 0) * 70ms);
}

.js .page-faq [data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .js .page-faq [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .page-faq .cat-tile,
  .page-faq .faq-item,
  .page-faq .faq-hero__jump a {
    transition: none;
  }

  .page-faq .cat-tile:hover,
  .page-faq .cat-tile:focus-visible {
    transform: none;
  }
}

/* ===== 断点 ===== */
@media (min-width: 640px) {
  .page-faq .wrap {
    padding-inline: 26px;
  }

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

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

@media (min-width: 900px) {
  .page-faq .wrap {
    padding-inline: 34px;
  }

  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.55fr) minmax(260px, 1fr);
    align-items: end;
    gap: 40px;
  }

  .page-faq .faq-hero__stats {
    grid-template-columns: 1fr;
  }

  .page-faq .faq-hot__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(280px, 1fr);
    align-items: start;
    gap: 36px;
  }

  .page-faq .faq-figure--hot {
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-deep__inner {
    grid-template-columns: 232px minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }

  .page-faq .faq-deep__aside {
    position: sticky;
    top: 96px;
    padding-right: 18px;
    border-right: 1px solid var(--faq-line);
  }

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

  .page-faq .help-panel {
    grid-template-columns: minmax(0, 1.35fr) minmax(280px, 1fr);
    gap: 36px;
    align-items: start;
  }
}

@media (min-width: 1200px) {
  .page-faq h1 {
    font-size: clamp(56px, 6.4vw, 88px);
  }

  .page-faq .faq-item > summary {
    padding: 18px 22px;
  }

  .page-faq .faq-a {
    padding: 0 22px 20px;
  }
}

.page-faq {
  --i: 0.3s;
}