.page-faq {
  position: relative;
  overflow-x: hidden;
  background:
    radial-gradient(880px 440px at 10% -4%, rgba(23, 224, 176, 0.13), transparent 62%),
    radial-gradient(720px 400px at 94% 2%, rgba(242, 180, 87, 0.1), transparent 58%),
    var(--oy-deep);
  color: var(--oy-ink);
  font-family: var(--oy-sans);
  font-size: 16px;
  line-height: 1.75;
}

.page-faq .oy-crumbs {
  padding-top: 22px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: 24px 0 40px;
}

.page-faq .faq-hero::after {
  content: "";
  display: block;
  height: 3px;
  margin-top: 34px;
  background: linear-gradient(90deg, var(--oy-neon) 0 34%, var(--oy-gold) 34% 67%, var(--oy-signal) 67% 100%);
}

.page-faq .faq-hero__label {
  margin: 0 0 14px;
  color: var(--oy-neon);
}

.page-faq .faq-hero__title {
  margin: 0 0 16px;
  max-width: 15em;
  font-size: clamp(30px, 7vw, 58px);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.08;
}

.page-faq .faq-hero__lead {
  margin: 0 0 26px;
  max-width: 62ch;
  color: var(--oy-muted);
  font-size: 16px;
  line-height: 1.75;
}

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

.page-faq .faq-jump a {
  display: inline-block;
  padding: 8px 14px;
  border: 1px solid var(--oy-line);
  color: var(--oy-ink);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
  transition: border-color 0.2s ease, color 0.2s ease, background-color 0.2s ease;
}

.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  border-color: var(--oy-neon);
  color: var(--oy-neon);
  background: rgba(23, 224, 176, 0.08);
}

/* ---------- 章节 ---------- */
.page-faq .oy-section {
  padding: 44px 0;
}

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

.page-faq .oy-section__head {
  margin-bottom: 26px;
}

.page-faq .faq-link {
  color: var(--oy-neon);
  text-decoration: none;
  border-bottom: 1px solid rgba(23, 224, 176, 0.45);
  transition: color 0.2s ease, border-color 0.2s ease;
}

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

/* ---------- 01 手风琴 ---------- */
.page-faq .faq-accordion {
  display: grid;
  gap: 10px;
  max-width: var(--oy-max-narrow);
}

.page-faq .faq-item {
  background: var(--oy-layer);
  border: 1px solid var(--oy-line-soft);
  border-left: 3px solid var(--oy-raise);
  transition: background-color 0.24s ease, border-color 0.24s ease;
}

.page-faq .faq-item[open] {
  background: var(--oy-raise);
  border-left-color: var(--oy-neon);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item__num {
  flex: none;
  font-family: var(--oy-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--oy-gold);
  letter-spacing: 0.06em;
}

.page-faq .faq-item__text {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.5;
}

.page-faq .faq-item__icon {
  position: relative;
  flex: none;
  width: 12px;
  height: 12px;
  margin-left: auto;
}

.page-faq .faq-item__icon::before,
.page-faq .faq-item__icon::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 1px;
  background: var(--oy-neon);
}

.page-faq .faq-item__icon::after {
  transform: rotate(90deg);
  transition: transform 0.24s ease;
}

.page-faq .faq-item[open] .faq-item__icon::after {
  transform: rotate(0deg);
}

.page-faq .faq-item__body {
  padding: 0 18px 18px 45px;
  max-width: 68ch;
  color: var(--oy-muted);
  font-size: 15px;
  line-height: 1.75;
  animation: faqFadeIn 0.24s ease both;
}

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

/* ---------- 02 分段切换 ---------- */
.page-faq .faq-tabs {
  margin-top: 4px;
}

.page-faq .faq-tabs .oy-tabs__list {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--oy-line);
}

.page-faq .faq-tabs .oy-tabs__tab {
  appearance: none;
  background: transparent;
  border: 0;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  padding: 12px 20px;
  color: var(--oy-muted);
  font-family: var(--oy-sans);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-faq .faq-tabs .oy-tabs__tab:hover {
  color: var(--oy-ink);
}

.page-faq .faq-tabs .oy-tabs__tab[aria-selected="true"] {
  color: var(--oy-neon);
  border-bottom-color: var(--oy-neon);
}

.page-faq .faq-tabs .oy-tabs__tab:focus-visible {
  outline: 2px solid var(--oy-neon-soft);
  outline-offset: 2px;
}

.page-faq .faq-tabs .oy-tabs__panel {
  padding-top: 28px;
}

.page-faq .faq-tabs .oy-tabs__panel[hidden] {
  display: none;
}

.page-faq .faq-tabs .oy-tabs__panel:not([hidden]) {
  animation: faqFadeIn 0.24s ease both;
}

.page-faq .faq-panel__grid {
  display: grid;
  gap: 22px;
}

.page-faq .faq-panel__title {
  margin: 0 0 8px;
  font-size: 21px;
  font-weight: 900;
  letter-spacing: -0.015em;
  line-height: 1.35;
}

.page-faq .faq-panel__text {
  margin: 0 0 14px;
  max-width: 60ch;
  color: var(--oy-muted);
  font-size: 15px;
}

.page-faq .faq-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
  max-width: 64ch;
}

.page-faq .faq-list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.7;
}

.page-faq .faq-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 1px;
  background: var(--oy-neon);
}

.page-faq .faq-panel__aside {
  padding: 20px;
  background: var(--oy-raise);
  border-left: 3px solid var(--oy-gold);
}

.page-faq .faq-panel__aside p {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--oy-muted);
}

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

/* ---------- 03 手机三步 ---------- */
.page-faq .faq-steps {
  display: grid;
  gap: 34px;
}

.page-faq .faq-steps__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-step {
  position: relative;
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 16px;
  padding-bottom: 30px;
}

.page-faq .faq-step:last-child {
  padding-bottom: 0;
}

.page-faq .faq-step__num {
  font-family: var(--oy-mono);
  font-size: 24px;
  font-weight: 600;
  color: var(--oy-gold);
  line-height: 1.25;
}

.page-faq .faq-step:not(:last-child) .faq-step__num::after {
  content: "";
  position: absolute;
  left: 21px;
  top: 40px;
  bottom: 4px;
  width: 1px;
  background: linear-gradient(180deg, rgba(23, 224, 176, 0.5), rgba(201, 216, 228, 0.08));
}

.page-faq .faq-step__title {
  margin: 0 0 6px;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-faq .faq-step__body p {
  margin: 0;
  max-width: 60ch;
  color: var(--oy-muted);
  font-size: 15px;
  line-height: 1.75;
}

.page-faq .faq-step__hint {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 10px !important;
  padding-left: 10px;
  border-left: 2px solid var(--oy-signal);
  color: var(--oy-muted);
  font-size: 13.5px;
}

.page-faq .faq-step__hint svg {
  flex: none;
  color: var(--oy-signal);
}

.page-faq .faq-steps__visual {
  display: grid;
  gap: 18px;
}

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

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

/* ---------- 04 筛选 ---------- */
.page-faq .faq-filter {
  display: grid;
  gap: 24px;
}

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

.page-faq .faq-filter__item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 18px;
  background: rgba(11, 35, 52, 0.72);
  border: 1px solid var(--oy-line-soft);
  border-left: 3px solid var(--oy-neon);
}

.page-faq .faq-filter__item:nth-child(2) {
  border-left-color: var(--oy-gold);
}

.page-faq .faq-filter__item:nth-child(3) {
  border-left-color: var(--oy-neon-soft);
}

.page-faq .faq-filter__k {
  font-family: var(--oy-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--oy-muted);
}

.page-faq .faq-filter__body h3 {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-faq .faq-filter__body p {
  margin: 0;
  max-width: 58ch;
  color: var(--oy-muted);
  font-size: 15px;
  line-height: 1.7;
}

.page-faq .faq-filter__tip {
  align-self: start;
  padding: 20px;
  background: var(--oy-raise);
  border: 1px solid var(--oy-line-soft);
  border-top: 3px solid var(--oy-signal);
}

.page-faq .faq-filter__tip p {
  margin: 0 0 10px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--oy-muted);
}

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

.page-faq .faq-filter__tip .oy-label {
  color: var(--oy-signal);
}

.page-faq .faq-readouts {
  display: grid;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-filter__end {
  margin: 24px 0 0;
  font-size: 15px;
  color: var(--oy-muted);
}

/* ---------- 05 对照表 ---------- */
.page-faq .faq-map__legend {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  margin-bottom: 4px;
  background: var(--oy-raise);
  border: 1px solid var(--oy-line-soft);
}

.page-faq .faq-map__side {
  font-family: var(--oy-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--oy-gold);
}

.page-faq .faq-map__side--b {
  color: var(--oy-neon);
}

.page-faq .faq-map__sw {
  font-size: 18px;
  line-height: 1;
  color: var(--oy-signal);
}

.page-faq .faq-map__points {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-map__point {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--oy-line-soft);
}

.page-faq .faq-map__idx {
  font-family: var(--oy-mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--oy-neon);
  letter-spacing: 0.06em;
}

.page-faq .faq-map__body h3 {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-faq .faq-map__body p {
  margin: 0;
  max-width: 64ch;
  color: var(--oy-muted);
  font-size: 15px;
  line-height: 1.75;
}

/* ---------- 06 纠错 ---------- */
.page-faq .faq-fix {
  display: grid;
  gap: 26px;
}

.page-faq .faq-fix__need {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-fix__need li {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 18px 0;
  border-top: 1px solid var(--oy-line-soft);
}

.page-faq .faq-fix__num {
  flex: 0 0 44px;
  font-family: var(--oy-mono);
  font-size: 20px;
  font-weight: 600;
  color: var(--oy-gold);
  line-height: 1.4;
}

.page-faq .faq-fix__body h3 {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-faq .faq-fix__body p {
  margin: 0;
  max-width: 58ch;
  color: var(--oy-muted);
  font-size: 15px;
  line-height: 1.7;
}

.page-faq .faq-fix__after {
  align-self: start;
  padding: 22px;
  background: linear-gradient(180deg, var(--oy-raise), rgba(11, 35, 52, 0.85));
  border: 1px solid var(--oy-line-soft);
  border-top: 3px solid var(--oy-neon);
}

.page-faq .faq-fix__after p {
  margin: 0 0 12px;
  color: var(--oy-muted);
  font-size: 14.5px;
  line-height: 1.75;
}

.page-faq .faq-fix__after .oy-label {
  color: var(--oy-neon);
}

.page-faq .faq-fix__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

/* ---------- 动效 ---------- */
@keyframes faqFadeIn {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__body,
  .page-faq .faq-tabs .oy-tabs__panel:not([hidden]) {
    animation: none;
  }
  .page-faq .faq-item__icon::after {
    transition: none;
  }
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-readouts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-filter__item {
    grid-template-columns: 76px minmax(0, 1fr);
    gap: 14px;
    align-items: baseline;
  }
}

@media (min-width: 880px) {
  .page-faq .oy-section {
    padding: 58px 0;
  }

  .page-faq .faq-hero {
    padding: 34px 0 52px;
  }

  .page-faq .faq-panel__grid {
    grid-template-columns: minmax(0, 1.7fr) minmax(0, 1fr);
    gap: 32px;
  }

  .page-faq .faq-filter {
    grid-template-columns: minmax(0, 1.7fr) minmax(0, 1fr);
    gap: 32px;
  }

  .page-faq .faq-fix {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    gap: 34px;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-steps {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    gap: 40px;
    align-items: start;
  }

  .page-faq .faq-steps__visual {
    position: sticky;
    top: 96px;
  }
}