.page-faq {
  --faq-toc-w: 268px;
  --faq-radius: 20px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: 40px 0 52px;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(130% 100% at 88% -12%, rgba(52, 224, 218, 0.13), transparent 62%),
    radial-gradient(95% 80% at 0% 112%, rgba(255, 196, 87, 0.08), transparent 60%),
    linear-gradient(180deg, var(--ink-1), var(--ink-0));
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(36, 51, 84, 0.5) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(36, 51, 84, 0.5) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-mask-image: radial-gradient(112% 86% at 50% 0%, #000 0%, transparent 78%);
  mask-image: radial-gradient(112% 86% at 50% 0%, #000 0%, transparent 78%);
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: 32px;
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-head);
  font-size: clamp(27px, 5.2vw, 46px);
  font-weight: 900;
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--fg);
}

.page-faq .faq-hero .lede {
  margin: 18px 0 0;
  max-width: 58ch;
  font-family: var(--font-body);
  font-size: 16.5px;
  line-height: 1.88;
  color: var(--fg-2);
}

.page-faq .faq-hero__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-hero__pin {
  position: relative;
  padding: 26px 22px 24px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(160deg, var(--ink-2), var(--ink-1));
  box-shadow: 0 26px 64px rgba(0, 0, 0, 0.46);
  overflow: hidden;
}

.page-faq .faq-hero__pin::before {
  content: "";
  position: absolute;
  top: 0;
  left: 22px;
  right: 22px;
  height: 1px;
  background: repeating-linear-gradient(90deg, var(--line) 0 8px, transparent 8px 16px);
}

.page-faq .faq-hero__pin::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), var(--gold), var(--orange));
}

.page-faq .faq-hero__pin-tag {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--gold);
}

.page-faq .faq-hero__pin-title {
  margin: 12px 0 0;
  font-family: var(--font-head);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--fg);
}

.page-faq .faq-hero__pin-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0 22px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__pin-list li {
  padding: 5px 13px;
  border: 1px solid rgba(52, 224, 218, 0.32);
  border-radius: var(--r-pill);
  font-size: 13px;
  color: var(--cyan);
}

/* ---------- 主体骨架 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: 38px;
  padding: 40px 0 84px;
}

/* ---------- 目录 ---------- */
.page-faq .faq-toc__inner {
  display: grid;
  gap: 16px;
}

.page-faq .faq-toc__eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: var(--fg-2);
}

.page-faq .faq-toc__nav {
  display: grid;
  gap: 4px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--ink-1);
}

.page-faq .faq-toc__link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 12px 11px 18px;
  border-radius: var(--r-sm);
  color: var(--fg-2);
  font-size: 14.5px;
  line-height: 1.4;
  text-decoration: none;
  transition: background-color 0.22s var(--ease), color 0.22s var(--ease);
}

.page-faq .faq-toc__link::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 50%;
  width: 2px;
  height: 18px;
  border-radius: 2px;
  background: var(--cyan);
  opacity: 0;
  transform: translateY(-50%) scaleY(0.3);
  transition: opacity 0.22s var(--ease), transform 0.22s var(--ease);
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  background: var(--ink-2);
  color: var(--fg);
  outline: none;
}

.page-faq .faq-toc__link:hover::before,
.page-faq .faq-toc__link:focus-visible::before {
  opacity: 1;
  transform: translateY(-50%) scaleY(1);
}

.page-faq .faq-toc__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gold);
}

.page-faq .faq-toc__label {
  flex: 1;
}

.page-faq .faq-toc__n {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--fg-2);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-toc__pin {
  padding: 18px;
  border: 1px solid rgba(255, 196, 87, 0.34);
  border-radius: var(--r-md);
  background: linear-gradient(152deg, rgba(255, 196, 87, 0.13), rgba(255, 196, 87, 0.02));
}

.page-faq .faq-toc__pin-k {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--gold);
}

.page-faq .faq-toc__pin-t {
  margin: 10px 0 16px;
  font-family: var(--font-head);
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--fg);
}

/* ---------- 第 4 条 ---------- */
.page-faq .faq-q4 {
  position: relative;
  overflow: hidden;
  padding: 26px 22px 24px;
  border: 1px solid rgba(255, 196, 87, 0.3);
  border-radius: var(--r-lg);
  background:
    radial-gradient(120% 100% at 100% 0%, rgba(255, 196, 87, 0.13), transparent 58%),
    linear-gradient(165deg, var(--ink-2), var(--ink-1));
}

.page-faq .faq-q4__grid {
  display: grid;
  gap: 26px;
}

.page-faq .faq-q4__tag {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--gold);
}

.page-faq .faq-q4__title {
  margin: 12px 0 0;
  font-family: var(--font-head);
  font-size: clamp(21px, 3.4vw, 29px);
  font-weight: 700;
  line-height: 1.42;
  color: var(--fg);
}

.page-faq .faq-q4__lede {
  margin: 14px 0 0;
  max-width: 60ch;
  font-size: 15.5px;
  line-height: 1.88;
  color: var(--fg-2);
}

.page-faq .faq-dims {
  display: grid;
  gap: 10px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-dim {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 2px 12px;
  padding: 13px 16px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: rgba(7, 11, 20, 0.55);
}

.page-faq .faq-dim__k {
  grid-row: span 2;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gold);
}

.page-faq .faq-dim__t {
  font-size: 15px;
  font-weight: 700;
  color: var(--fg);
}

.page-faq .faq-dim__d {
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--fg-2);
}

.page-faq .faq-q4__figure {
  margin: 0;
}

.page-faq .faq-q4__order {
  margin-top: 26px;
  padding-top: 22px;
  border-top: 1px dashed var(--line);
}

.page-faq .faq-q4__order-k {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-faq .faq-steps {
  display: grid;
  gap: 10px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-step {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--fg-2);
}

.page-faq .faq-step__n {
  flex: none;
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  border-radius: var(--r-pill);
  background: rgba(52, 224, 218, 0.14);
  border: 1px solid rgba(52, 224, 218, 0.36);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan);
}

/* ---------- 问答分类区块 ---------- */
.page-faq .faq-sec {
  margin-top: 52px;
  scroll-margin-top: 92px;
}

.page-faq .faq-q4 {
  scroll-margin-top: 92px;
}

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

.page-faq .faq-sec__num {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-faq .faq-sec__title {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(21px, 3.2vw, 29px);
  font-weight: 700;
  line-height: 1.4;
  color: var(--fg);
}

.page-faq .faq-sec__lede {
  margin: 12px 0 0;
  max-width: 64ch;
  font-size: 15.5px;
  line-height: 1.88;
  color: var(--fg-2);
}

.page-faq .faq-sec__foot {
  margin: 22px 0 0;
  padding-left: 14px;
  border-left: 2px solid rgba(255, 196, 87, 0.5);
  font-size: 14px;
  line-height: 1.85;
  color: var(--fg-2);
}

.page-faq .faq-sec__foot a,
.page-faq .qa__a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px dashed rgba(52, 224, 218, 0.5);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-sec__foot a:hover,
.page-faq .qa__a a:hover {
  color: var(--gold);
  border-bottom-color: rgba(255, 196, 87, 0.7);
}

/* ---------- 折叠问答 ---------- */
.page-faq .qa-list {
  display: grid;
  gap: 12px;
  margin-top: 24px;
}

.page-faq .qa {
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--ink-1);
  transition: border-color 0.24s var(--ease), background-color 0.24s var(--ease);
}

.page-faq .qa[open] {
  border-color: rgba(52, 224, 218, 0.4);
  background: var(--ink-2);
}

.page-faq .qa__q {
  position: relative;
  display: block;
  padding: 17px 48px 17px 20px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.58;
  color: var(--fg);
  transition: color 0.2s var(--ease);
}

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

.page-faq .qa__q::after {
  content: "+";
  position: absolute;
  top: 16px;
  right: 20px;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--cyan);
  transition: transform 0.26s var(--ease), color 0.22s var(--ease);
}

.page-faq .qa[open] .qa__q::after {
  transform: rotate(45deg);
  color: var(--gold);
}

.page-faq .qa__q:hover {
  color: var(--gold);
}

.page-faq .qa__a {
  padding: 2px 20px 22px;
  font-size: 15px;
  line-height: 1.92;
  color: var(--fg-2);
}

.page-faq .qa[open] .qa__a {
  animation: faqPanelIn 0.28s var(--ease);
}

@keyframes faqPanelIn {
  from {
    opacity: 0;
    transform: translateY(-5px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.page-faq .qa__a p {
  margin: 0;
}

/* ---------- 配图 ---------- */
.page-faq .media-frame__inner img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--r-sm);
  object-fit: cover;
}

.page-faq .faq-entry__figure {
  margin: 26px 0 0;
}

/* ---------- 人工支持 ---------- */
.page-faq .faq-help {
  padding-top: 34px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-help__grid {
  display: grid;
  gap: 12px;
  margin: 24px 0 22px;
}

.page-faq .faq-help__item {
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: linear-gradient(150deg, var(--ink-2), var(--ink-1));
}

.page-faq .faq-help__k {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--fg-2);
}

.page-faq .faq-help__v {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: 15.5px;
  line-height: 1.5;
  color: var(--fg);
  word-break: break-word;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-hero {
    padding: 52px 0 64px;
  }

  .page-faq .faq-q4 {
    padding: 32px 30px 30px;
  }

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

@media (min-width: 940px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1fr) 360px;
    gap: 48px;
    align-items: center;
  }

  .page-faq .faq-q4__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: 34px;
    align-items: start;
  }

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

@media (min-width: 1000px) {
  .page-faq .faq-body {
    grid-template-columns: var(--faq-toc-w) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
    padding: 56px 0 96px;
  }

  .page-faq .faq-toc__inner {
    position: sticky;
    top: 32px;
  }

  .page-faq .faq-sec {
    margin-top: 62px;
  }
}

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

  .page-faq .qa[open] .qa__a {
    animation: none;
  }
}