.page-faq {
  --faq-toc: 236px;
  --faq-gap: clamp(14px, 1.8vw, 20px);
  display: block;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  padding: clamp(28px, 4.6vw, 64px) 0 clamp(26px, 4vw, 50px);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: -110px;
  right: -140px;
  width: min(62vw, 660px);
  aspect-ratio: 1.5;
  border-radius: 46% 54% 38% 62% / 55% 42% 58% 45%;
  background: radial-gradient(58% 58% at 58% 42%, rgba(46, 123, 255, 0.32), rgba(46, 123, 255, 0) 72%);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  bottom: -60px;
  left: -90px;
  width: min(38vw, 340px);
  aspect-ratio: 1.2;
  border-radius: 60% 40% 55% 45% / 45% 58% 42% 55%;
  background: radial-gradient(60% 60% at 40% 50%, rgba(255, 138, 61, 0.16), rgba(255, 138, 61, 0) 70%);
  pointer-events: none;
}

.page-faq .faq-hero h1 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(28px, 5.4vw, 54px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--ink);
  max-width: 20ch;
}

.page-faq .faq-hero .lede {
  margin: clamp(14px, 2vw, 22px) 0 0;
  max-width: 62ch;
  font-size: clamp(15.5px, 1.6vw, 17px);
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .jumprow {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: clamp(20px, 3vw, 32px) 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .jumprow a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(22, 33, 58, 0.5);
  color: var(--ink);
  font-size: 14px;
  letter-spacing: 0.02em;
  text-decoration: none;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background 0.18s var(--ease);
}

.page-faq .jumprow a::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--hot);
}

.page-faq .jumprow a:hover,
.page-faq .jumprow a:focus-visible {
  color: var(--hot-soft);
  border-color: rgba(255, 138, 61, 0.55);
  background: rgba(255, 138, 61, 0.1);
}

/* ---------- 高频速查 ---------- */
.page-faq .faq-quick {
  padding-bottom: clamp(30px, 4.6vw, 58px);
}

.page-faq .quick-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  margin-top: clamp(18px, 2.6vw, 28px);
}

.page-faq .quick-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: clamp(18px, 2.2vw, 24px);
  border-radius: var(--r-card);
  border: 1px solid var(--line-soft);
  background: linear-gradient(158deg, rgba(22, 33, 58, 0.9), rgba(12, 18, 32, 0.94));
  box-shadow: var(--shadow-panel);
  overflow: hidden;
  transition: transform 0.24s var(--ease), border-color 0.24s var(--ease);
}

.page-faq .quick-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 76px;
  height: 3px;
  background: linear-gradient(90deg, var(--brand), rgba(46, 123, 255, 0));
}

.page-faq .quick-card:hover {
  transform: translateY(-3px);
  border-color: var(--line);
}

.page-faq .quick-card__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--hot);
}

.page-faq .quick-card__q {
  margin: 0;
  font-size: clamp(15.5px, 1.5vw, 17px);
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink);
}

.page-faq .quick-card__a {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--muted);
  flex: 1 1 auto;
}

.page-faq .quick-card__go {
  align-self: flex-start;
  margin-top: 4px;
  font-size: 13.5px;
  letter-spacing: 0.03em;
  color: var(--ice);
  text-decoration: none;
  border-bottom: 1px solid rgba(127, 216, 255, 0.35);
  padding-bottom: 2px;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-faq .quick-card__go:hover,
.page-faq .quick-card__go:focus-visible {
  color: var(--hot);
  border-bottom-color: var(--hot);
}

/* ---------- 主双栏 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 3.6vw, 46px);
  padding-bottom: clamp(44px, 6vw, 88px);
}

/* ---------- 左侧粘性目录 ---------- */
.page-faq .faq-toc {
  border-radius: var(--r-card);
  border: 1px solid var(--line-soft);
  background: rgba(12, 18, 32, 0.72);
  padding: 16px 14px;
}

.page-faq .faq-toc__title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  color: var(--muted);
  text-transform: uppercase;
}

.page-faq .faq-toc__list {
  display: grid;
  gap: 2px;
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-toc__list a {
  display: block;
  padding: 8px 10px;
  border-radius: 8px;
  border-left: 2px solid transparent;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
  text-decoration: none;
  transition: color 0.18s var(--ease), background 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-faq .faq-toc__list a:hover,
.page-faq .faq-toc__list a:focus-visible {
  color: var(--ink);
  background: rgba(46, 123, 255, 0.14);
  border-left-color: var(--hot);
}

/* ---------- 问答分组 ---------- */
.page-faq .qa-group {
  margin-bottom: clamp(32px, 4.6vw, 56px);
  scroll-margin-top: calc(var(--topbar-h) + 22px);
}

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

.page-faq .qa-group__head {
  margin-bottom: clamp(14px, 1.8vw, 20px);
}

.page-faq .qa-group__head h2 {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.6vw, 29px);
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: -0.015em;
  color: var(--ink);
}

.page-faq .qa-group__lede {
  margin: 10px 0 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.76;
  color: var(--muted);
}

/* ---------- 折叠问答卡 ---------- */
.page-faq .qa {
  border: 1px solid var(--line-soft);
  border-radius: 12px;
  background: rgba(12, 18, 32, 0.68);
  margin-bottom: 10px;
  overflow: hidden;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .qa[open] {
  border-color: var(--line);
  background: rgba(22, 33, 58, 0.62);
}

.page-faq .qa__head {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px clamp(14px, 1.8vw, 20px);
  cursor: pointer;
  list-style: none;
  font-size: clamp(15px, 1.5vw, 16.5px);
  font-weight: 600;
  line-height: 1.55;
  color: var(--ink);
  transition: color 0.18s var(--ease);
}

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

.page-faq .qa__head::marker {
  content: "";
}

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

.page-faq .qa__head::after {
  content: "";
  flex: 0 0 auto;
  margin-left: auto;
  margin-top: 7px;
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--ice);
  border-bottom: 2px solid var(--ice);
  transform: rotate(45deg);
  transition: transform 0.22s var(--ease);
}

.page-faq .qa[open] .qa__head::after {
  transform: rotate(-135deg);
  margin-top: 10px;
}

.page-faq .qa__idx {
  flex: 0 0 auto;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--hot);
}

.page-faq .qa__title {
  min-width: 0;
}

.page-faq .qa__body {
  padding: 0 clamp(16px, 2vw, 22px) clamp(16px, 2vw, 22px);
  color: var(--muted);
  font-size: 15.5px;
  line-height: 1.78;
}

.page-faq .qa__body > * + * {
  margin-top: 10px;
}

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

/* ---------- 步骤列表 ---------- */
.page-faq .steps {
  counter-reset: faqstep;
  display: grid;
  gap: 14px;
  margin: 4px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .steps > li {
  counter-increment: faqstep;
  position: relative;
  padding-left: 38px;
  color: var(--muted);
}

.page-faq .steps > li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid rgba(255, 138, 61, 0.42);
  background: rgba(255, 138, 61, 0.12);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--hot);
}

.page-faq .steps > li::after {
  content: "";
  position: absolute;
  left: 13px;
  top: 30px;
  bottom: -14px;
  width: 1px;
  background: linear-gradient(180deg, rgba(255, 138, 61, 0.42), rgba(255, 138, 61, 0));
}

.page-faq .steps > li:last-child::after {
  display: none;
}

/* ---------- 提示条与数据条 ---------- */
.page-faq .tip {
  margin-top: 14px;
  padding: 12px 14px;
  border-left: 3px solid var(--hot);
  border-radius: 6px;
  background: rgba(255, 138, 61, 0.1);
  color: var(--ink);
  font-size: 14.5px;
  line-height: 1.72;
}

.page-faq .factline {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin-top: 16px;
  padding: 12px 14px;
  border: 1px dashed var(--line);
  border-radius: 10px;
  background: rgba(46, 123, 255, 0.07);
  font-size: 13.5px;
  color: var(--muted);
}

.page-faq .factline b {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 14.5px;
  color: var(--ice);
  padding-left: 6px;
}

/* ---------- 术语表 ---------- */
.page-faq .glossary {
  display: grid;
  gap: 1px;
  margin: 14px 0 0;
  padding: 0;
  border-radius: 10px;
  overflow: hidden;
  background: var(--line-soft);
}

.page-faq .glossary > div {
  display: grid;
  gap: 3px;
  padding: 12px 14px;
  background: rgba(12, 18, 32, 0.88);
}

.page-faq .glossary dt {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.03em;
  color: var(--ice);
}

.page-faq .glossary dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--muted);
}

/* ---------- 图 ---------- */
.page-faq .qa-figure {
  margin: 0 0 clamp(16px, 2vw, 22px);
  border-radius: var(--r-card);
  border: 1px solid var(--line-soft);
  background: rgba(12, 18, 32, 0.7);
  overflow: hidden;
}

.page-faq .qa-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-faq .qa-figure .figure__cap {
  padding: 10px 16px 13px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 联系块 ---------- */
.page-faq .faq-contact {
  display: flex;
  flex-direction: column;
  gap: clamp(18px, 2.6vw, 28px);
  padding: clamp(22px, 3vw, 36px);
  border-radius: var(--r-organic);
  border: 1px solid rgba(255, 138, 61, 0.3);
  background: linear-gradient(142deg, rgba(255, 138, 61, 0.11), rgba(12, 18, 32, 0.94) 62%);
  box-shadow: var(--shadow-panel);
}

.page-faq .faq-contact h2 {
  margin: 8px 0 0;
  font-size: clamp(20px, 2.6vw, 28px);
  font-weight: 800;
  line-height: 1.26;
  color: var(--ink);
}

.page-faq .faq-contact__text p {
  margin: 10px 0 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .faq-contact__list {
  display: grid;
  gap: 8px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-contact__list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 12px;
  font-size: 14.5px;
}

.page-faq .faq-contact__list span {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.page-faq .faq-contact__list a {
  color: var(--ice);
  text-decoration: none;
  border-bottom: 1px solid rgba(127, 216, 255, 0.35);
  word-break: break-all;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

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

.page-faq .faq-contact__action {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-faq .quick-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .qa__body {
    padding-left: clamp(42px, 4.4vw, 54px);
  }

  .page-faq .glossary > div {
    grid-template-columns: 118px minmax(0, 1fr);
    gap: 14px;
    align-items: baseline;
  }
}

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

  .page-faq .faq-toc {
    position: sticky;
    top: calc(var(--topbar-h) + 22px);
    padding: 18px 16px;
  }

  .page-faq .faq-toc__list a {
    font-size: 13.5px;
  }

  .page-faq .faq-contact {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .page-faq .faq-contact__text {
    flex: 1 1 62%;
    min-width: 0;
  }

  .page-faq .faq-contact__action {
    flex: 0 0 auto;
    flex-direction: column;
    align-items: stretch;
  }

  .page-faq .faq-contact__action .btn {
    text-align: center;
  }
}

@media (min-width: 1120px) {
  .page-faq .quick-grid {
    grid-template-columns: 1.16fr 0.94fr 1fr 0.88fr;
  }

  .page-faq .quick-card:nth-child(2) {
    margin-top: 16px;
  }

  .page-faq .quick-card:nth-child(4) {
    margin-top: 26px;
  }
}
<<<END>>>