.page-faq {
  --faq-pad: clamp(16px, 3vw, 28px);
  background:
    radial-gradient(90% 50% at 85% 0%, rgba(49, 242, 200, .10), transparent 62%),
    var(--night);
  color: var(--paper);
  font-family: var(--font-sans);
  padding-bottom: clamp(56px, 8vw, 100px);
}

.page-faq a {
  color: inherit;
  text-decoration: none;
}

.page-faq .breadcrumb {
  margin: clamp(18px, 3vw, 30px) 0 clamp(14px, 2vw, 22px);
  font-family: var(--font-mono);
  font-size: .73rem;
  letter-spacing: .1em;
  color: var(--paper-dim);
}

.page-faq .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .breadcrumb__list li {
  display: flex;
  align-items: center;
  gap: .45rem;
}

.page-faq .breadcrumb__list li + li::before {
  content: "/";
  color: var(--line-strong);
}

.page-faq .breadcrumb a {
  padding-bottom: 1px;
  border-bottom: 1px solid transparent;
  transition: color .15s ease, border-color .15s ease;
}

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

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3.4vw, 40px);
  padding: clamp(20px, 4vw, 44px);
  margin-bottom: clamp(24px, 3.6vw, 42px);
  background: var(--cabin);
  border: 2px solid var(--line-strong);
  box-shadow: var(--shadow);
}

.page-faq .label {
  font-family: var(--font-mono);
  letter-spacing: .14em;
  color: var(--neon);
}

.page-faq .faq-hero__kicker {
  margin: 0 0 .9rem;
}

.page-faq h1 {
  margin: 0 0 .5em;
  font-size: clamp(1.95rem, 6vw, 3.4rem);
  line-height: 1.05;
  font-weight: 900;
  letter-spacing: -.035em;
  color: var(--paper);
}

.page-faq .faq-hero__lede {
  margin: 0 0 1.5em;
  max-width: 46ch;
  font-size: clamp(.98rem, 1.35vw, 1.1rem);
  line-height: 1.8;
  color: var(--paper-soft);
}

.page-faq .faq-hero__acts {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .75rem;
}

.page-faq .faq-hero__brief {
  align-self: start;
  padding: clamp(16px, 2.4vw, 24px);
  background: rgba(7, 27, 42, .72);
  border: 1px solid var(--line);
  border-left: 3px solid var(--neon);
}

.page-faq .faq-brief {
  display: grid;
  gap: .8rem;
  margin: .9rem 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-brief li {
  display: grid;
  grid-template-columns: 2rem minmax(0, 1fr);
  gap: .55rem;
  align-items: baseline;
  padding-bottom: .75rem;
  border-bottom: 1px dashed var(--line);
  font-size: .93rem;
  line-height: 1.65;
  color: var(--paper-soft);
}

.page-faq .faq-brief li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-faq .faq-brief .data-num {
  font-family: var(--font-mono);
  font-size: .82rem;
  letter-spacing: .06em;
  color: var(--ember);
}

.page-faq .faq-hero__hint {
  margin: 1rem 0 0;
  padding-top: .9rem;
  border-top: 1px solid var(--line);
  font-size: .82rem;
  line-height: 1.65;
  color: var(--paper-dim);
}

/* ---------- 主体两栏 ---------- */

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 34px);
  align-items: start;
}

.page-faq .faq-rail {
  padding: clamp(16px, 2.2vw, 22px);
  background: var(--cabin);
  border: 2px solid var(--line-strong);
  box-shadow: var(--shadow);
}

.page-faq .faq-rail__nav {
  display: grid;
  gap: .12rem;
  margin: .85rem 0 1.15rem;
}

.page-faq .faq-rail__nav a {
  display: grid;
  grid-template-columns: 1.9rem minmax(0, 1fr);
  gap: .5rem;
  align-items: baseline;
  padding: .5rem .55rem;
  border-left: 2px solid transparent;
  font-size: .9rem;
  line-height: 1.5;
  color: var(--paper-soft);
  transition: background-color .15s ease, border-color .15s ease, color .15s ease;
}

.page-faq .faq-rail__nav a:hover,
.page-faq .faq-rail__nav a:focus-visible {
  background: rgba(49, 242, 200, .1);
  border-left-color: var(--neon);
  color: var(--neon);
}

.page-faq .faq-rail__nav .data-num {
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .08em;
  color: var(--ember);
}

.page-faq .faq-rail__foot {
  padding-top: .9rem;
  border-top: 1px solid var(--line);
}

.page-faq .faq-rail__foot p {
  margin: 0 0 .5rem;
  font-size: .82rem;
  line-height: 1.65;
  color: var(--paper-dim);
}

.page-faq .mini-link {
  display: inline-block;
  padding-bottom: 1px;
  font-size: .85rem;
  color: var(--neon);
  border-bottom: 1px solid var(--neon);
  transition: color .15s ease, border-color .15s ease;
}

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

.page-faq .faq-body {
  display: grid;
  gap: clamp(16px, 2.4vw, 26px);
}

/* ---------- 章节面板 ---------- */

.page-faq .faq-block {
  padding: clamp(20px, 3.2vw, 34px);
  background: var(--cabin);
  border: 2px solid var(--line-strong);
  box-shadow: var(--shadow);
  scroll-margin-top: 24px;
}

.page-faq .faq-block--paper {
  background: var(--paper);
  border-color: var(--ink);
  box-shadow: var(--shadow-paper);
  color: var(--ink);
}

.page-faq .faq-block__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(12px, 2vw, 20px);
  align-items: start;
  margin-bottom: clamp(16px, 2.4vw, 24px);
}

.page-faq .faq-block__num {
  font-family: var(--font-mono);
  font-size: clamp(2.1rem, 5vw, 3.4rem);
  font-weight: 700;
  line-height: .85;
  letter-spacing: -.04em;
  color: transparent;
  -webkit-text-stroke: 1.6px var(--neon);
}

.page-faq .faq-block--paper .faq-block__num {
  -webkit-text-stroke-color: var(--ink);
}

@supports not (-webkit-text-stroke: 1px red) {
  .page-faq .faq-block__num {
    color: var(--neon);
  }
  .page-faq .faq-block--paper .faq-block__num {
    color: var(--ink);
  }
}

.page-faq h2 {
  margin: 0 0 .45rem;
  font-size: clamp(1.32rem, 2.8vw, 2rem);
  line-height: 1.16;
  font-weight: 800;
  letter-spacing: -.02em;
}

.page-faq h3 {
  margin: 0 0 .35rem;
  font-size: clamp(1rem, 1.5vw, 1.14rem);
  line-height: 1.3;
  font-weight: 700;
  letter-spacing: -.01em;
}

.page-faq .faq-block__lede {
  margin: 0;
  max-width: 58ch;
  font-size: .97rem;
  line-height: 1.78;
  color: var(--paper-soft);
}

.page-faq .faq-block--paper .faq-block__lede {
  color: rgba(10, 20, 24, .74);
}

.page-faq .faq-block--paper .label {
  color: rgba(10, 20, 24, .62);
}

/* ---------- 步骤卡 ---------- */

.page-faq .faq-steps {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(12px, 1.8vw, 18px);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-step {
  padding: clamp(14px, 2vw, 20px);
  background: rgba(7, 27, 42, .55);
  border: 1px solid var(--line-strong);
  border-top: 3px solid var(--neon);
}

.page-faq .faq-step__idx {
  display: inline-block;
  margin-bottom: .45rem;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .14em;
  color: var(--ember);
}

.page-faq .faq-step p {
  margin: 0;
  font-size: .93rem;
  line-height: 1.75;
  color: var(--paper-soft);
}

.page-faq .faq-block--paper .faq-step {
  background: rgba(10, 20, 24, .04);
  border-color: rgba(10, 20, 24, .18);
  border-top-color: var(--ember);
}

.page-faq .faq-block--paper .faq-step p {
  color: rgba(10, 20, 24, .74);
}

/* ---------- 说明列表 ---------- */

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

.page-faq .faq-list li {
  position: relative;
  padding-left: 1.15rem;
  font-size: .95rem;
  line-height: 1.78;
  color: var(--paper-soft);
}

.page-faq .faq-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .74em;
  width: .5rem;
  height: 1px;
  background: var(--neon);
}

.page-faq .faq-list strong {
  font-weight: 700;
  color: var(--paper);
}

.page-faq .faq-block--paper .faq-list li {
  color: rgba(10, 20, 24, .76);
}

.page-faq .faq-block--paper .faq-list strong {
  color: var(--ink);
}

.page-faq .faq-block--paper .faq-list li::before {
  background: var(--ember);
}

/* ---------- 折叠问答 ---------- */

.page-faq .faq-qa {
  margin-top: .7rem;
  background: rgba(7, 27, 42, .55);
  border: 1px solid var(--line-strong);
}

.page-faq .faq-qa summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .8rem 1rem;
  font-size: .95rem;
  font-weight: 700;
  line-height: 1.5;
  cursor: pointer;
  list-style: none;
  transition: background-color .15s ease, color .15s ease;
}

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

.page-faq .faq-qa summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 1.15rem;
  line-height: 1;
  color: var(--neon);
}

.page-faq .faq-qa[open] > summary::after {
  content: "−";
}

.page-faq .faq-qa summary:hover,
.page-faq .faq-qa summary:focus-visible {
  background: rgba(49, 242, 200, .1);
  color: var(--neon);
}

.page-faq .faq-qa p {
  margin: 0;
  padding: 0 1rem .95rem;
  font-size: .92rem;
  line-height: 1.78;
  color: var(--paper-soft);
}

.page-faq .faq-block--paper .faq-qa {
  background: rgba(10, 20, 24, .035);
  border-color: rgba(10, 20, 24, .18);
}

.page-faq .faq-block--paper .faq-qa summary {
  color: var(--ink);
}

.page-faq .faq-block--paper .faq-qa summary::after {
  color: var(--ember);
}

.page-faq .faq-block--paper .faq-qa summary:hover,
.page-faq .faq-block--paper .faq-qa summary:focus-visible {
  background: rgba(255, 138, 61, .16);
  color: var(--ink);
}

.page-faq .faq-block--paper .faq-qa p {
  color: rgba(10, 20, 24, .74);
}

/* ---------- 图文分栏 ---------- */

.page-faq .faq-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(16px, 2.4vw, 26px);
  align-items: start;
}

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

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  background: var(--night);
  border: 2px solid var(--line-strong);
}

.page-faq .faq-block--paper .faq-figure img {
  border-color: var(--ink);
}

.page-faq .faq-figure--phone img {
  max-width: 320px;
  margin: 0 auto;
}

.page-faq .faq-figure__cap {
  margin-top: .6rem;
  font-family: var(--font-mono);
  font-size: .74rem;
  line-height: 1.6;
  letter-spacing: .04em;
  color: var(--paper-dim);
  text-align: center;
}

.page-faq .faq-block--paper .faq-figure__cap {
  color: rgba(10, 20, 24, .6);
}

.page-faq .faq-block > .faq-figure {
  margin-top: clamp(16px, 2.4vw, 24px);
}

.page-faq .faq-note {
  margin: clamp(14px, 2vw, 18px) 0 0;
  padding-left: .9rem;
  border-left: 3px solid var(--ember);
  font-size: .9rem;
  line-height: 1.75;
  color: var(--paper-dim);
}

.page-faq .faq-block__cta {
  display: inline-block;
  margin-top: clamp(14px, 2vw, 20px);
}

.page-faq .faq-block--paper .btn {
  border-color: var(--ink);
  background: transparent;
  color: var(--ink);
}

.page-faq .faq-block--paper .btn:hover,
.page-faq .faq-block--paper .btn:focus-visible {
  background: var(--ink);
  color: var(--paper);
}

/* ---------- 收尾去处 ---------- */

.page-faq .faq-next {
  margin-top: clamp(20px, 3vw, 30px);
  padding: clamp(20px, 3.2vw, 34px);
  background: var(--cabin);
  border: 2px solid var(--line-strong);
  box-shadow: var(--shadow);
}

.page-faq .faq-next__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(12px, 1.8vw, 18px);
  margin-top: clamp(14px, 2vw, 20px);
}

.page-faq .faq-next__card {
  display: grid;
  gap: .35rem;
  padding: clamp(14px, 2vw, 20px);
  background: rgba(7, 27, 42, .55);
  border: 1px solid var(--line-strong);
  border-left: 3px solid var(--ember);
  transition: background-color .15s ease, border-color .15s ease, box-shadow .15s ease;
}

.page-faq .faq-next__card .label {
  color: var(--ember);
}

.page-faq .faq-next__card strong {
  font-size: 1.02rem;
  color: var(--paper);
}

.page-faq .faq-next__card span:last-child {
  font-size: .9rem;
  line-height: 1.7;
  color: var(--paper-soft);
}

.page-faq .faq-next__card:hover,
.page-faq .faq-next__card:focus-visible {
  background: rgba(49, 242, 200, .08);
  border-left-color: var(--neon);
  box-shadow: 5px 5px 0 rgba(3, 12, 20, .9);
}

.page-faq .faq-next__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .8rem 1.2rem;
  margin-top: clamp(16px, 2.2vw, 22px);
  padding-top: clamp(14px, 2vw, 18px);
  border-top: 1px solid var(--line);
}

/* ---------- 响应式 ---------- */

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

@media (min-width: 760px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  }
  .page-faq .faq-figure--phone img {
    max-width: 100%;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: 248px minmax(0, 1fr);
    gap: clamp(24px, 3vw, 40px);
  }
  .page-faq .faq-rail {
    position: sticky;
    top: 20px;
  }
}