.page-faq {
  --faq-answer: #101B21;
  --faq-jump-h: 62px;
  background: var(--night);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--step-3);
  line-height: 1.75;
}

.page-faq .wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
  box-sizing: border-box;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 5vw, 52px) 0 clamp(28px, 5vw, 54px);
  background:
    radial-gradient(120% 90% at 10% 0%, rgba(168, 255, 62, 0.10), transparent 58%),
    var(--night);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: -25%;
  right: -20%;
  width: 44%;
  height: 165%;
  transform: skewX(-16deg);
  background: linear-gradient(180deg, rgba(22, 38, 29, 0.95), rgba(22, 38, 29, 0.12));
  border-left: 1px solid rgba(168, 255, 62, 0.18);
  pointer-events: none;
}

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

.page-faq .breadcrumb {
  font-size: var(--step-2);
  color: var(--muted);
  margin-bottom: 18px;
}

.page-faq .breadcrumb a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 160ms ease, border-color 160ms ease;
}

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

.page-faq .breadcrumb span {
  margin: 0 6px;
}

.page-faq .faq-hero__kicker {
  margin: 0;
  color: var(--neon);
  font-size: var(--step-1);
  letter-spacing: 0.24em;
  text-transform: uppercase;
}

.page-faq .faq-hero__title {
  margin: 14px 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 6.4vw, var(--step-7));
  line-height: 1.08;
  letter-spacing: -0.03em;
  max-width: 22ch;
}

.page-faq .faq-hero__lede {
  margin: 0 0 24px;
  max-width: 34em;
  color: var(--muted);
  font-size: clamp(16px, 2.3vw, var(--step-4));
  line-height: 1.75;
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin: 0;
  padding: 18px 0 0;
  list-style: none;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: var(--step-2);
}

.page-faq .faq-hero__meta li {
  position: relative;
  padding-left: 16px;
}

.page-faq .faq-hero__meta li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--neon);
}

/* ---------- 快捷定位胶囊条 ---------- */
.page-faq .faq-jump {
  position: sticky;
  top: 0;
  z-index: 30;
  padding: 12px 0;
  background: rgba(7, 11, 14, 0.94);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.page-faq .faq-jump__inner {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-jump__inner::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-jump .pill {
  flex: 0 0 auto;
  white-space: nowrap;
  padding: 8px 18px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  color: var(--muted);
  font-size: var(--step-2);
  text-decoration: none;
  transition: color 160ms ease, border-color 160ms ease, background-color 160ms ease;
}

.page-faq .faq-jump .pill:hover,
.page-faq .faq-jump .pill:focus-visible {
  color: var(--night);
  background: var(--neon);
  border-color: var(--neon);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  padding: clamp(34px, 6vw, 68px) 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-group--stand {
  background: var(--stand);
}

.page-faq .faq-group__inner {
  display: grid;
  gap: 22px;
  align-items: start;
}

.page-faq .faq-group__index {
  margin: 0 0 10px;
  color: var(--neon);
  font-size: var(--step-1);
  letter-spacing: 0.26em;
}

.page-faq .faq-group__title {
  margin: 0 0 10px;
  padding-left: 14px;
  border-left: 3px solid var(--neon);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 4.4vw, var(--step-6));
  line-height: 1.15;
  letter-spacing: -0.02em;
  transition: color 160ms ease;
}

.page-faq .faq-group__note {
  margin: 0;
  max-width: 18em;
  color: var(--muted);
  font-size: var(--step-2);
}

.page-faq .faq-group:target .faq-group__title {
  color: var(--neon);
}

.page-faq .faq-group:target .faq-group__index {
  color: var(--amber);
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.page-faq .faq-item {
  border-top: 1px solid var(--line);
}

.page-faq .faq-item:last-child {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 18px 4px;
  list-style: none;
  cursor: pointer;
  color: var(--ink);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(17px, 2.6vw, var(--step-5));
  line-height: 1.4;
  transition: color 160ms ease;
}

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

.page-faq .faq-item__q::after {
  content: "+";
  margin-left: auto;
  padding-left: 14px;
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: var(--step-4);
  color: var(--muted);
  transition: color 160ms ease, transform 160ms ease;
}

.page-faq .faq-item__q:hover {
  color: var(--neon);
}

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

.page-faq .faq-item[open] .faq-item__q {
  color: var(--neon);
}

.page-faq .faq-item[open] .faq-item__q::after {
  content: "–";
  color: var(--amber);
}

.page-faq .faq-item__no {
  flex: 0 0 auto;
  padding-top: 6px;
  color: var(--muted);
  font-size: var(--step-1);
  letter-spacing: 0.14em;
  transition: color 160ms ease;
}

.page-faq .faq-item[open] .faq-item__no {
  color: var(--neon);
}

.page-faq .faq-item__text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-item__body {
  margin: 0 0 20px;
  padding: 18px 20px;
  border-radius: var(--r-md);
  background: var(--faq-answer);
}

.page-faq .faq-item__body p {
  margin: 0 0 12px;
  max-width: 32em;
  color: var(--ink);
  font-size: var(--step-3);
  line-height: 1.8;
}

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

.page-faq .faq-item__body ol {
  margin: 0;
  padding: 0 0 0 22px;
  max-width: 32em;
  color: var(--muted);
  font-size: var(--step-3);
  line-height: 1.75;
}

.page-faq .faq-item__body li {
  margin-bottom: 6px;
}

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

.page-faq .faq-item__body li::marker {
  color: var(--neon);
  font-family: var(--font-mono);
}

/* ---------- 排查流程 ---------- */
.page-faq .faq-flow {
  padding: clamp(34px, 6vw, 66px) 0;
  background:
    linear-gradient(180deg, var(--turf), var(--night) 88%);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-flow__title {
  margin: 0 0 24px;
  max-width: 20ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 4vw, var(--step-6));
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.page-faq .faq-flow__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--r-lg);
}

.page-faq .faq-flow__steps {
  display: grid;
  gap: 18px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-flow__step {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-right: 18px;
  color: var(--muted);
  font-size: var(--step-2);
  line-height: 1.7;
}

.page-faq .faq-flow__step .mono {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  margin-bottom: 4px;
  border: 1px solid var(--neon);
  border-radius: 50%;
  background: var(--night);
  color: var(--neon);
  font-size: 11px;
  letter-spacing: 0;
}

.page-faq .faq-flow__step strong {
  color: var(--ink);
  font-size: var(--step-4);
  font-weight: 700;
}

/* ---------- 同步示意图 ---------- */
.page-faq .faq-sync-figure {
  margin: 26px 0 0;
  min-width: 0;
}

.page-faq .faq-sync-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--r-lg);
}

.page-faq .faq-sync-figure figcaption {
  margin-top: 12px;
  color: var(--muted);
  font-size: var(--step-2);
}

/* ---------- 底部通道 ---------- */
.page-faq .faq-help {
  padding: clamp(38px, 7vw, 80px) 0 clamp(46px, 8vw, 90px);
  background:
    linear-gradient(115deg, rgba(255, 122, 41, 0.12) 0%, transparent 42%),
    var(--night);
}

.page-faq .faq-help__panel {
  padding: clamp(22px, 4vw, 42px);
  border-radius: var(--r-lg);
  background: var(--stand);
  border-left: 4px solid var(--neon);
}

.page-faq .faq-help__index {
  margin: 0 0 12px;
  color: var(--amber);
  font-size: var(--step-1);
  letter-spacing: 0.22em;
}

.page-faq .faq-help__title {
  margin: 0 0 14px;
  max-width: 22ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 4.4vw, var(--step-6));
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.page-faq .faq-help__lede {
  margin: 0 0 16px;
  max-width: 32em;
  color: var(--muted);
  font-size: var(--step-3);
}

.page-faq .faq-help__list {
  display: grid;
  gap: 8px;
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
  color: var(--ink);
  font-size: var(--step-3);
}

.page-faq .faq-help__list li {
  display: flex;
  gap: 12px;
  align-items: baseline;
}

.page-faq .faq-help__list .mono {
  color: var(--data);
  font-size: var(--step-2);
}

.page-faq .faq-help__contact {
  margin: 0 0 22px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: var(--step-2);
  word-break: break-word;
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
}

.page-faq .faq-help__actions .link-underline {
  color: var(--data);
  font-size: var(--step-2);
  text-decoration: none;
  border-bottom: 1px solid rgba(79, 179, 255, 0.4);
  transition: color 160ms ease, border-color 160ms ease;
}

.page-faq .faq-help__actions .link-underline:hover,
.page-faq .faq-help__actions .link-underline:focus-visible {
  color: var(--neon);
  border-bottom-color: var(--neon);
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-group__inner {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
    gap: clamp(28px, 4vw, 56px);
  }

  .page-faq .faq-group__head {
    position: sticky;
    top: calc(var(--faq-jump-h) + 18px);
  }

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

  .page-faq .faq-flow__step {
    padding: 0 26px 0 0;
  }

  .page-faq .faq-flow__step::before {
    content: "";
    position: absolute;
    top: 14px;
    left: 34px;
    width: calc(100% - 40px);
    height: 1px;
    background: linear-gradient(90deg, rgba(168, 255, 62, 0.55), rgba(79, 179, 255, 0.25));
  }

  .page-faq .faq-flow__step:last-child::before {
    display: none;
  }

  .page-faq .faq-help__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px 28px;
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-item {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.95fr);
    column-gap: clamp(24px, 4vw, 54px);
    align-items: start;
  }

  .page-faq .faq-item__q {
    grid-column: 1;
    grid-row: 1;
  }

  .page-faq .faq-item__body {
    grid-column: 2;
    grid-row: 1;
    margin-top: 20px;
  }

  .page-faq .faq-item__body p,
  .page-faq .faq-item__body ol {
    max-width: 30em;
  }

  .page-faq .faq-sync-figure {
    margin-top: 34px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-jump .pill,
  .page-faq .faq-item__q,
  .page-faq .faq-item__q::after,
  .page-faq .breadcrumb a,
  .page-faq .faq-help__actions .link-underline {
    transition: none;
  }
}