.page-faq {
  --faq-rail: 176px;
  --faq-shell-gap: clamp(24px, 3.4vw, 52px);
  --faq-card-pad: clamp(22px, 3.4vw, 48px);
  --faq-soft: rgba(245, 241, 234, .78);
  display: block;
  background: var(--c-paper);
  color: var(--c-ink);
  font-family: var(--font-body);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(36px, 6vw, 76px) 0 clamp(52px, 8vw, 104px);
  color: var(--c-paper);
  background:
    radial-gradient(110% 84% at 88% -22%, rgba(255, 106, 26, .26), transparent 60%),
    radial-gradient(84% 72% at 4% 6%, rgba(27, 110, 156, .28), transparent 64%),
    linear-gradient(180deg, #0E1118 0%, #16202E 100%);
}

.page-faq .faq-hero__orbit {
  position: absolute;
  left: -12%;
  right: -12%;
  bottom: 16%;
  height: 1px;
  pointer-events: none;
  background: linear-gradient(90deg, transparent, rgba(224, 179, 84, .55), rgba(255, 106, 26, .42), transparent);
  transform: rotate(-4deg);
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
}

.page-faq .faq-crumb {
  margin: 0 0 clamp(22px, 4vw, 42px);
}

.page-faq .faq-crumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .06em;
}

.page-faq .faq-crumb__item {
  color: rgba(198, 204, 212, .7);
}

.page-faq .faq-crumb__item + .faq-crumb__item::before {
  content: "／";
  margin-right: 6px;
  color: rgba(198, 204, 212, .34);
}

.page-faq .faq-crumb__link {
  color: rgba(245, 241, 234, .82);
  text-decoration: none;
  border-bottom: 1px solid rgba(224, 179, 84, .45);
  padding-bottom: 1px;
}

.page-faq .faq-crumb__link:hover,
.page-faq .faq-crumb__link:focus-visible {
  color: var(--c-gold);
}

.page-faq .faq-hero__kicker {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--c-gold);
}

.page-faq .faq-hero__title {
  margin: 0 0 clamp(18px, 3vw, 28px);
  max-width: 16em;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 6.2vw, 58px);
  line-height: 1.1;
  letter-spacing: -.02em;
}

.page-faq .faq-hero__lede {
  margin: 0 0 clamp(26px, 4vw, 40px);
  max-width: 34em;
  font-size: clamp(16px, 1.5vw, 18px);
  line-height: 1.78;
  color: var(--faq-soft);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 导览外壳 ---------- */
.page-faq .faq-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-items: start;
  gap: clamp(20px, 3vw, 34px);
  max-width: var(--max-w);
  margin: 0 auto;
  padding: clamp(30px, 5vw, 68px) var(--nav-pad) clamp(40px, 6vw, 84px);
}

.page-faq .faq-rail__kicker {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--c-lake);
}

.page-faq .faq-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

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

.page-faq .faq-rail__cell {
  flex: 0 0 auto;
}

.page-faq .faq-rail__link {
  display: block;
  white-space: nowrap;
  padding: 8px 14px;
  border: 1px solid var(--line-ink);
  border-radius: var(--r-sm);
  background: rgba(255, 255, 255, .55);
  font-size: 13.5px;
  color: var(--c-ink);
  text-decoration: none;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  border-color: var(--c-ember);
  color: var(--c-flame);
}

.page-faq .faq-flow {
  display: flex;
  flex-direction: column;
  gap: clamp(18px, 2.6vw, 30px);
  min-width: 0;
}

/* ---------- 章节牌 ---------- */
.page-faq .faq-block {
  position: relative;
  padding: var(--faq-card-pad);
  border: 1px solid var(--line-ink);
  border-radius: var(--r-lg);
  background: linear-gradient(180deg, rgba(255, 255, 255, .88), rgba(255, 255, 255, .6));
  scroll-margin-top: 120px;
}

.page-faq .faq-block--night {
  color: var(--c-paper);
  border-color: rgba(198, 204, 212, .16);
  background:
    radial-gradient(90% 70% at 100% 0%, rgba(255, 106, 26, .17), transparent 62%),
    linear-gradient(180deg, #16202E 0%, #0E1118 100%);
}

.page-faq .faq-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--c-lake);
}

.page-faq .faq-kicker::after {
  content: "";
  width: 40px;
  height: 1px;
  background: currentColor;
  opacity: .48;
}

.page-faq .faq-block--night .faq-kicker {
  color: var(--c-gold);
}

.page-faq .faq-block__title {
  margin: 0 0 14px;
  max-width: 22em;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(21px, 3.4vw, 33px);
  line-height: 1.26;
  letter-spacing: -.015em;
}

.page-faq .faq-block__lede {
  margin: 0 0 clamp(20px, 3vw, 32px);
  max-width: 38em;
  font-size: 16.5px;
  line-height: 1.78;
  color: rgba(30, 38, 48, .78);
}

.page-faq .faq-block--night .faq-block__lede {
  color: var(--faq-soft);
}

.page-faq .faq-block__cta {
  margin-top: clamp(18px, 3vw, 26px);
}

/* ---------- 三步上手 ---------- */
.page-faq .faq-steps {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-step {
  position: relative;
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 0;
}

.page-faq .faq-step:first-child {
  padding-top: 6px;
}

.page-faq .faq-step + .faq-step {
  border-top: 1px dashed rgba(198, 204, 212, .7);
}

.page-faq .faq-step::after {
  content: "";
  position: absolute;
  left: 21px;
  top: 52px;
  bottom: 6px;
  border-left: 1px dashed rgba(27, 110, 156, .32);
}

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

.page-faq .faq-step__num {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 1.5px solid var(--c-ember);
  border-radius: 50%;
  background: var(--c-paper);
  color: var(--c-flame);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
}

.page-faq .faq-step__title {
  margin: 6px 0 6px;
  font-size: 17.5px;
  font-weight: 700;
  line-height: 1.4;
}

.page-faq .faq-step__text {
  margin: 0;
  max-width: 36em;
  font-size: 15.5px;
  line-height: 1.76;
  color: rgba(30, 38, 48, .76);
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: clamp(18px, 3vw, 30px) 0;
}

.page-faq .faq-figure--tight {
  margin-top: clamp(14px, 2.4vw, 22px);
}

.page-faq .faq-figure .phx-figure__frame {
  overflow: hidden;
  border-radius: var(--r-md);
}

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

/* ---------- 旧版入口两步路径 ---------- */
.page-faq .faq-route {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-route__item {
  position: relative;
  padding: 20px 20px 20px 26px;
  border: 1px solid rgba(198, 204, 212, .22);
  border-radius: var(--r-md);
  background: rgba(245, 241, 234, .06);
}

.page-faq .faq-route__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  bottom: 18px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--c-ember), var(--c-gold));
}

.page-faq .faq-route__num {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .14em;
  color: var(--c-gold);
}

.page-faq .faq-route__title {
  margin: 8px 0 6px;
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.42;
}

.page-faq .faq-route__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.74;
  color: var(--faq-soft);
}

/* ---------- 对照操作说明牌 ---------- */
.page-faq .faq-ops {
  display: grid;
  gap: 10px;
}

.page-faq .faq-op {
  overflow: hidden;
  border: 1px solid var(--line-ink);
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, .62);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-op[open] {
  border-color: rgba(255, 106, 26, .5);
  background: rgba(255, 255, 255, .92);
}

.page-faq .faq-op__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.45;
}

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

.page-faq .faq-op__num {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--c-lake);
}

.page-faq .faq-op__mark {
  position: relative;
  width: 12px;
  height: 12px;
}

.page-faq .faq-op__mark::before,
.page-faq .faq-op__mark::after {
  content: "";
  position: absolute;
  background: var(--c-ink);
  opacity: .5;
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.page-faq .faq-op__mark::before {
  left: 0;
  top: 5.25px;
  width: 12px;
  height: 1.5px;
}

.page-faq .faq-op__mark::after {
  left: 5.25px;
  top: 0;
  width: 1.5px;
  height: 12px;
}

.page-faq .faq-op[open] .faq-op__mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .faq-op__body {
  padding: 0 18px 18px;
}

.page-faq .faq-op__body p {
  margin: 0;
  max-width: 38em;
  font-size: 15.5px;
  line-height: 1.76;
  color: rgba(30, 38, 48, .78);
}

/* ---------- 勾选预览 ---------- */
.page-faq .faq-demo {
  margin-top: clamp(18px, 3vw, 28px);
  padding: 18px;
  border: 1px dashed rgba(27, 110, 156, .34);
  border-radius: var(--r-md);
  background: linear-gradient(180deg, rgba(27, 110, 156, .07), rgba(46, 139, 106, .05));
}

.page-faq .faq-demo__hint {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  line-height: 1.6;
  color: var(--c-lake);
}

.page-faq .faq-demo__grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-demo__cell {
  position: relative;
}

.page-faq .faq-demo__input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-faq .faq-demo__pick {
  display: grid;
  place-items: center;
  height: 42px;
  border: 1px solid var(--line-ink);
  border-radius: var(--r-sm);
  background: #fff;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: rgba(30, 38, 48, .6);
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-faq .faq-demo__input:checked + .faq-demo__pick {
  border-color: var(--c-flame);
  background: linear-gradient(180deg, var(--c-ember), var(--c-flame));
  color: #fff;
  box-shadow: 0 8px 18px -10px rgba(179, 39, 30, .8);
}

.page-faq .faq-demo__input:focus-visible + .faq-demo__pick {
  outline: 2px solid var(--c-lake);
  outline-offset: 2px;
}

/* ---------- 网络环境切换 ---------- */
.page-faq .faq-net {
  margin-top: clamp(18px, 3vw, 28px);
}

.page-faq .faq-net__input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-faq .faq-net__switch {
  display: inline-flex;
  gap: 4px;
  margin-bottom: 16px;
  padding: 4px;
  border: 1px solid var(--line-ink);
  border-radius: 999px;
  background: rgba(30, 38, 48, .05);
}

.page-faq .faq-net__btn {
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 13.5px;
  color: rgba(30, 38, 48, .7);
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq #net-steady:checked ~ .faq-net__switch label[for="net-steady"],
.page-faq #net-weak:checked ~ .faq-net__switch label[for="net-weak"] {
  background: var(--c-ink);
  color: var(--c-paper);
}

.page-faq .faq-net:has(.faq-net__input:checked) .faq-net__panel {
  display: none;
}

.page-faq .faq-net:has(#net-steady:checked) .faq-net__panel[data-panel="steady"],
.page-faq .faq-net:has(#net-weak:checked) .faq-net__panel[data-panel="weak"] {
  display: block;
}

.page-faq .faq-net__panel {
  padding: 20px;
  border: 1px solid var(--line-ink);
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, .72);
}

.page-faq .faq-net__panel h3 {
  margin: 0 0 8px;
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.42;
}

.page-faq .faq-net__panel p {
  margin: 0;
  max-width: 38em;
  font-size: 15.5px;
  line-height: 1.76;
  color: rgba(30, 38, 48, .78);
}

.page-faq .faq-wave {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 30px;
  margin-bottom: 14px;
}

.page-faq .faq-wave span {
  width: 4px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--c-lake), rgba(27, 110, 156, .3));
}

.page-faq .faq-wave span:nth-child(1) { height: 12px; }
.page-faq .faq-wave span:nth-child(2) { height: 22px; }
.page-faq .faq-wave span:nth-child(3) { height: 30px; }
.page-faq .faq-wave span:nth-child(4) { height: 26px; }
.page-faq .faq-wave span:nth-child(5) { height: 30px; }
.page-faq .faq-wave span:nth-child(6) { height: 24px; }
.page-faq .faq-wave span:nth-child(7) { height: 18px; }

.page-faq .faq-wave--weak span {
  background: linear-gradient(180deg, rgba(27, 110, 156, .55), rgba(198, 204, 212, .5));
}

.page-faq .faq-wave--weak span:nth-child(1) { height: 8px; }
.page-faq .faq-wave--weak span:nth-child(2) { height: 14px; }
.page-faq .faq-wave--weak span:nth-child(3) { height: 9px; }
.page-faq .faq-wave--weak span:nth-child(4) { height: 20px; }
.page-faq .faq-wave--weak span:nth-child(5) { height: 12px; }
.page-faq .faq-wave--weak span:nth-child(6) { height: 17px; }
.page-faq .faq-wave--weak span:nth-child(7) { height: 10px; }

.page-faq .faq-note {
  margin: clamp(16px, 2.6vw, 24px) 0 0;
  max-width: 40em;
  font-size: 14px;
  line-height: 1.72;
  color: rgba(30, 38, 48, .62);
}

/* ---------- 联系求助 ---------- */
.page-faq .faq-contact {
  display: grid;
  gap: 16px;
}

.page-faq .faq-contact__card {
  padding: 22px;
  border: 1px solid rgba(198, 204, 212, .22);
  border-radius: var(--r-md);
  background: rgba(245, 241, 234, .06);
}

.page-faq .faq-contact__card h3 {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.42;
}

.page-faq .faq-contact__card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.76;
  color: var(--faq-soft);
}

.page-faq .faq-contact__meta {
  display: block;
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: .04em;
  word-break: break-word;
  color: var(--c-gold);
}

/* ---------- 窄屏与宽屏适配 ---------- */
@media (max-width: 959px) {
  .page-faq .faq-rail__kicker {
    display: none;
  }
}

@media (min-width: 640px) {
  .page-faq .faq-demo__grid {
    grid-template-columns: repeat(8, minmax(0, 1fr));
  }
}

@media (min-width: 720px) {
  .page-faq .faq-route {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }
}

@media (min-width: 760px) {
  .page-faq .faq-contact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-faq .faq-shell {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: var(--faq-shell-gap);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 108px;
    align-self: start;
    padding-top: 4px;
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-rail__cell {
    flex: 0 1 auto;
  }

  .page-faq .faq-rail__link {
    position: relative;
    padding: 11px 10px 11px 20px;
    border: 0;
    border-left: 2px solid rgba(30, 38, 48, .14);
    border-radius: 0;
    background: transparent;
    font-size: 14px;
    transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
  }

  .page-faq .faq-rail__link::before {
    content: "";
    position: absolute;
    left: -5px;
    top: 50%;
    width: 8px;
    height: 8px;
    margin-top: -4px;
    border-radius: 50%;
    background: var(--c-mist);
    transition: background var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
  }

  .page-faq .faq-rail__link:hover,
  .page-faq .faq-rail__link:focus-visible,
  .page-faq .faq-rail__link[aria-current],
  .page-faq .faq-rail__link.is-active {
    border-left-color: var(--c-ember);
    background: transparent;
    color: var(--c-flame);
  }

  .page-faq .faq-rail__link:hover::before,
  .page-faq .faq-rail__link:focus-visible::before,
  .page-faq .faq-rail__link[aria-current]::before,
  .page-faq .faq-rail__link.is-active::before {
    background: var(--c-ember);
    box-shadow: 0 0 0 4px rgba(255, 106, 26, .18);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: 1ms !important;
    animation-duration: 1ms !important;
  }
}