.page-faq {
  --faq-top: 7rem;
  --faq-edge: 14px;
  background: var(--pitch);
  color: var(--snow);
  font-family: var(--font-body);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding-block: clamp(1.5rem, 4vw, 2.75rem) clamp(2.5rem, 6vw, 4.75rem);
  background:
    radial-gradient(110% 85% at 92% -12%, rgba(53, 242, 208, .18), transparent 58%),
    linear-gradient(180deg, var(--field) 0%, var(--pitch) 82%);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  right: -18%;
  bottom: -60%;
  width: min(78vw, 820px);
  aspect-ratio: 1;
  border: 1px solid var(--line);
  border-radius: 50%;
  opacity: .55;
  z-index: -1;
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0 0 auto auto;
  width: 42%;
  height: 100%;
  background: repeating-linear-gradient(135deg, rgba(53, 242, 208, .07) 0 1px, transparent 1px 26px);
  mask-image: linear-gradient(115deg, transparent 28%, #000 100%);
  -webkit-mask-image: linear-gradient(115deg, transparent 28%, #000 100%);
  opacity: .8;
  z-index: -1;
  pointer-events: none;
}

.page-faq .faq-hero__in {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
  align-items: end;
}

.page-faq .faq-hero__text {
  display: grid;
  gap: 1.05rem;
  align-content: start;
  min-width: 0;
}

.page-faq .faq-hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.05rem, 5.6vw, 4.05rem);
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--snow);
  text-wrap: balance;
}

.page-faq .hero-accent {
  color: var(--neon);
  display: inline-block;
  position: relative;
}

.page-faq .hero-accent::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -.06em;
  height: 3px;
  background: linear-gradient(90deg, var(--neon), rgba(53, 242, 208, 0));
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 40em;
  color: var(--silver);
  font-size: clamp(1rem, 1.5vw, 1.1rem);
  line-height: 1.85;
}

.page-faq .faq-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin: .2rem 0 0;
  padding: 0;
  list-style: none;
}

/* 首屏侧板 */
.page-faq .faq-hero__board {
  padding: 1.35rem 1.25rem 1.4rem;
  background:
    radial-gradient(120% 100% at 100% 0%, rgba(255, 157, 77, .12), transparent 55%),
    linear-gradient(160deg, rgba(18, 60, 49, .96), rgba(12, 46, 38, .94));
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
  box-shadow: 0 24px 60px -32px rgba(0, 0, 0, .9);
}

.page-faq .faq-hero__board-title {
  margin: 0 0 1rem;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .18em;
  color: var(--mist);
}

.page-faq .board-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  padding: .62rem 0;
  border-bottom: 1px dashed rgba(46, 91, 79, .9);
}

.page-faq .board-row__k {
  font-size: .82rem;
  color: var(--silver);
  letter-spacing: .02em;
}

.page-faq .board-row__v {
  font-size: .95rem;
  font-weight: 600;
  color: var(--neon);
  text-align: right;
}

.page-faq .faq-hero__board-cta {
  margin-top: 1.15rem;
  width: 100%;
  justify-content: center;
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  padding-block: clamp(2rem, 5vw, 4.5rem);
  background:
    linear-gradient(180deg, var(--pitch) 0%, var(--pitch) 62%, #04140F 100%);
}

.page-faq .faq-layout {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3.25rem);
  align-items: start;
}

/* ---------- 目录 ---------- */
.page-faq .faq-toc {
  min-width: 0;
}

.page-faq .faq-toc__stick {
  display: grid;
  gap: 1rem;
}

.page-faq .faq-toc__list {
  display: grid;
  gap: .1rem;
  margin: 0;
  padding: 0;
  list-style: none;
  border-left: 1px solid var(--line);
}

.page-faq .faq-toc__link {
  display: flex;
  align-items: center;
  gap: .65rem;
  min-height: 44px;
  padding: .55rem .9rem;
  margin-left: -1px;
  border-left: 2px solid transparent;
  color: var(--silver);
  font-size: .94rem;
  text-decoration: none;
  transition: color .25s var(--ease), border-color .25s var(--ease), background-color .25s var(--ease);
}

.page-faq .faq-toc__link .mono {
  font-size: .76rem;
  color: var(--amber);
  letter-spacing: .08em;
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  color: var(--neon);
  border-left-color: var(--neon);
  background-color: rgba(53, 242, 208, .07);
}

.page-faq .faq-toc__link:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 2px;
}

.page-faq .faq-toc__foot {
  padding: 1rem 1rem 1.1rem;
  background: rgba(18, 60, 49, .55);
  border: 1px solid var(--line);
  border-left: 2px solid var(--amber);
}

.page-faq .faq-toc__foot p {
  margin: 0 0 .7rem;
  font-size: .86rem;
  line-height: 1.7;
  color: var(--silver);
}

.page-faq .faq-toc__foot-link {
  display: inline-block;
  min-height: 44px;
  padding: .55rem 0;
  font-family: var(--font-mono);
  font-size: .86rem;
  color: var(--neon);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 242, 208, .45);
}

.page-faq .faq-toc__foot-link:hover,
.page-faq .faq-toc__foot-link:focus-visible {
  color: var(--snow);
  border-bottom-color: var(--snow);
}

/* ---------- 区块 ---------- */
.page-faq .faq-main {
  min-width: 0;
}

.page-faq .faq-block {
  margin-bottom: clamp(2.25rem, 5vw, 3.5rem);
  scroll-margin-top: calc(var(--faq-top) + 1rem);
}

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

.page-faq .faq-block__head {
  display: flex;
  align-items: baseline;
  gap: .85rem;
  padding-bottom: .85rem;
  margin-bottom: 1.15rem;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-block__no {
  flex: 0 0 auto;
  padding: .12rem .45rem;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .1em;
  color: var(--neon);
  border: 1px solid var(--line);
}

.page-faq .faq-block__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.3rem, 3vw, 1.8rem);
  letter-spacing: -.01em;
  color: var(--snow);
}

.page-faq .faq-block__lede {
  margin: 0 0 1.2rem;
  max-width: 44em;
  font-size: .96rem;
  line-height: 1.85;
  color: var(--silver);
}

.page-faq .faq-block__lede a {
  color: var(--neon);
}

/* ---------- 快速卡片 ---------- */
.page-faq .quick-grid {
  display: grid;
  gap: .85rem;
  grid-template-columns: minmax(0, 1fr);
}

.page-faq .quick-card {
  display: grid;
  gap: .4rem;
  align-content: start;
  min-height: 44px;
  padding: 1.1rem 1.05rem;
  color: inherit;
  text-decoration: none;
  background: linear-gradient(150deg, var(--board), var(--field));
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - var(--faq-edge)) 0, 100% var(--faq-edge), 100% 100%, 0 100%);
  transition: transform .3s var(--ease), background-color .3s var(--ease), border-color .3s var(--ease);
}

.page-faq .quick-card:hover,
.page-faq .quick-card:focus-visible {
  transform: translateY(-4px);
  border-color: var(--neon);
  background: linear-gradient(150deg, #17493C, var(--field));
}

.page-faq .quick-card:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 3px;
}

.page-faq .quick-card__no {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .14em;
  color: var(--amber);
}

.page-faq .quick-card__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.03rem;
  line-height: 1.4;
  color: var(--snow);
}

.page-faq .quick-card__desc {
  font-size: .88rem;
  line-height: 1.7;
  color: var(--silver);
}

/* ---------- 图 ---------- */
.page-faq .faq-figure {
  margin: 1.35rem 0 1.5rem;
  overflow: hidden;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(.92);
}

.page-faq .faq-figure .media-frame__cap {
  font-size: .8rem;
  line-height: 1.6;
  color: var(--silver);
}

/* ---------- 时间刻度 ---------- */
.page-faq .timeline {
  display: grid;
  gap: 1.15rem;
  margin: 0 0 1.5rem;
  padding: 0 0 0 1.55rem;
  list-style: none;
  border-left: 1px solid var(--line);
}

.page-faq .timeline__item {
  position: relative;
  padding-bottom: .2rem;
}

.page-faq .timeline__item::before {
  content: "";
  position: absolute;
  left: calc(-1.55rem - 5px);
  top: .42rem;
  width: 9px;
  height: 9px;
  background: var(--neon);
  box-shadow: 0 0 0 4px rgba(53, 242, 208, .13);
}

.page-faq .timeline__label {
  display: block;
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .08em;
  color: var(--neon);
}

.page-faq .timeline__title {
  display: block;
  margin: .3rem 0 .35rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  color: var(--snow);
}

.page-faq .timeline__desc {
  margin: 0;
  font-size: .89rem;
  line-height: 1.72;
  color: var(--silver);
}

/* ---------- 三步登录 ---------- */
.page-faq .step-grid {
  display: grid;
  gap: .85rem;
  grid-template-columns: minmax(0, 1fr);
}

.page-faq .step-card {
  position: relative;
  padding: 1.15rem 1.05rem 1.05rem;
  background: linear-gradient(180deg, var(--board), var(--field));
  border: 1px solid var(--line);
  border-top: 2px solid var(--neon);
}

.page-faq .step-card::after {
  content: "";
  position: absolute;
  top: .95rem;
  right: .95rem;
  width: .5rem;
  height: .5rem;
  background: var(--amber);
  clip-path: polygon(0 0, 100% 50%, 0 100%);
  opacity: .85;
}

.page-faq .step-card__no {
  display: block;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .12em;
  color: var(--amber);
}

.page-faq .step-card__title {
  margin: .45rem 0 .4rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.02rem;
  color: var(--snow);
}

.page-faq .step-card__desc {
  margin: 0;
  font-size: .89rem;
  line-height: 1.72;
  color: var(--silver);
}

/* ---------- 索引 ---------- */
.page-faq .lib-grid {
  display: grid;
  gap: .65rem;
  grid-template-columns: minmax(0, 1fr);
}

.page-faq .lib-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .28rem .85rem;
  padding: .9rem 1rem;
  background: rgba(18, 60, 49, .58);
  border-left: 2px solid var(--neon);
  transition: background-color .28s var(--ease);
}

.page-faq .lib-item:hover {
  background: rgba(18, 60, 49, .85);
}

.page-faq .lib-item__no {
  grid-row: span 2;
  align-self: start;
  padding-top: .12rem;
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .06em;
  color: var(--neon);
}

.page-faq .lib-item__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: .97rem;
  color: var(--snow);
}

.page-faq .lib-item__desc {
  margin: 0;
  font-size: .87rem;
  line-height: 1.65;
  color: var(--silver);
}

/* ---------- 清单 ---------- */
.page-faq .check-list {
  display: grid;
  gap: .55rem;
  margin: 0 0 1.35rem;
  padding: 0;
  list-style: none;
}

.page-faq .check-list li {
  display: flex;
  align-items: flex-start;
  gap: .7rem;
  padding: .8rem .95rem;
  font-size: .92rem;
  line-height: 1.68;
  color: var(--snow);
  background: var(--field);
  border: 1px solid var(--line);
}

.page-faq .check-list li::before {
  content: "✓";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: .95rem;
  line-height: 1.68;
  color: var(--neon);
}

.page-faq .faq-block__link-row {
  display: flex;
  flex-wrap: wrap;
  gap: .65rem;
  margin: 0 0 .5rem;
}

/* ---------- 折叠问答 ---------- */
.page-faq .qa {
  margin-top: .7rem;
  background: linear-gradient(160deg, var(--board), var(--field));
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%);
  transition: border-color .25s var(--ease);
}

.page-faq .qa[open] {
  border-color: rgba(53, 242, 208, .45);
}

.page-faq .qa > summary {
  display: flex;
  align-items: center;
  gap: .8rem;
  min-height: 44px;
  padding: .95rem 1.05rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: .96rem;
  line-height: 1.5;
  color: var(--snow);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa > summary::marker {
  content: "";
}

.page-faq .qa > summary::after {
  content: "+";
  margin-left: auto;
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  line-height: 1;
  color: var(--neon);
  transition: transform .28s var(--ease);
}

.page-faq .qa[open] > summary::after {
  transform: rotate(45deg);
}

.page-faq .qa > summary:hover {
  color: var(--neon);
}

.page-faq .qa > summary:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 3px;
}

.page-faq .qa__body {
  padding: 0 1.05rem 1.1rem;
  font-size: .91rem;
  line-height: 1.8;
  color: var(--silver);
}

.page-faq .qa__body p {
  margin: 0 0 .55rem;
}

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

/* ---------- 联系面板 ---------- */
.page-faq .help-panel {
  display: grid;
  gap: 1.35rem;
  margin-top: .3rem;
  padding: clamp(1.2rem, 3.5vw, 1.9rem);
  background:
    radial-gradient(95% 130% at 100% 0%, rgba(255, 157, 77, .14), transparent 56%),
    linear-gradient(150deg, var(--board), var(--field));
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%);
}

.page-faq .help-panel__list {
  display: grid;
  gap: .85rem;
  min-width: 0;
}

.page-faq .help-panel__row {
  display: grid;
  gap: .2rem;
  min-width: 0;
}

.page-faq .help-panel__k {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .16em;
  color: var(--mist);
}

.page-faq .help-panel__v {
  font-family: var(--font-mono);
  font-size: clamp(.95rem, 2.4vw, 1.12rem);
  font-weight: 500;
  color: var(--snow);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-faq .help-panel__v--addr {
  font-family: var(--font-body);
  font-size: .95rem;
  line-height: 1.6;
}

.page-faq .help-panel__act {
  display: grid;
  gap: .85rem;
  align-content: start;
  min-width: 0;
}

.page-faq .help-panel__act p {
  margin: 0;
  font-size: .9rem;
  line-height: 1.75;
  color: var(--silver);
}

.page-faq .faq-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
}

.page-faq .faq-note {
  margin: 1.1rem 0 0;
  font-size: .83rem;
  line-height: 1.72;
  color: var(--silver);
}

.page-faq .faq-note a {
  color: var(--neon);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 242, 208, .4);
}

.page-faq .faq-note a:hover,
.page-faq .faq-note a:focus-visible {
  color: var(--snow);
  border-bottom-color: var(--snow);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .quick-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

@media (min-width: 900px) {
  .page-faq .faq-hero__in {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr);
  }

  .page-faq .faq-layout {
    grid-template-columns: minmax(210px, 4fr) minmax(0, 8fr);
  }

  .page-faq .faq-toc__stick {
    position: sticky;
    top: calc(var(--faq-top) + 1rem);
  }

  .page-faq .timeline {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1.15rem;
    padding: 2.5rem 0 0;
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .page-faq .timeline__item::before {
    left: 0;
    top: calc(-2.5rem - 5px);
    width: 9px;
    height: 9px;
  }

  .page-faq .timeline__item::after {
    content: "";
    position: absolute;
    top: calc(-2.5rem - 1px);
    left: 9px;
    right: -1.15rem;
    height: 1px;
    background: linear-gradient(90deg, rgba(53, 242, 208, .75), rgba(53, 242, 208, .05));
  }

  .page-faq .timeline__item:last-child::after {
    display: none;
  }

  .page-faq .help-panel {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: start;
  }
}

@media (min-width: 1180px) {
  .page-faq {
    --faq-top: 7.5rem;
  }

  .page-faq .faq-block__lede {
    font-size: 1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .quick-card,
  .page-faq .qa > summary::after,
  .page-faq .faq-toc__link,
  .page-faq .lib-item,
  .page-faq .qa {
    transition: none;
  }

  .page-faq .quick-card:hover,
  .page-faq .quick-card:focus-visible {
    transform: none;
  }
}