/* ================= page-faq ================= */

.page-faq {
  display: block;
  color: var(--oy-ink);
  background: var(--oy-base);
  overflow-x: clip;
}

.page-faq .oy-label {
  display: block;
  font-family: var(--oy-font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--oy-ink-3);
  margin: 0 0 10px;
}

.page-faq .oy-section__head {
  max-width: 760px;
  margin: 0 0 30px;
}

.page-faq .oy-section__head h2 {
  margin: 0 0 12px;
  font-size: clamp(24px, 4.4vw, 38px);
  font-weight: 900;
  line-height: 1.28;
  letter-spacing: -0.01em;
  color: var(--oy-ink);
}

.page-faq .oy-section__head p {
  margin: 0;
  font-size: 16px;
  line-height: 1.9;
  color: var(--oy-ink-2);
}

/* ---------- 首屏框景 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding: 28px 0 52px;
  border-bottom: var(--oy-line);
  background:
    radial-gradient(130% 100% at 92% -12%, rgba(198, 255, 61, 0.13), transparent 58%),
    radial-gradient(90% 80% at 0% 108%, rgba(255, 122, 61, 0.08), transparent 62%),
    linear-gradient(180deg, var(--oy-deep) 0%, var(--oy-base) 100%);
}

.page-faq .faq-hero .oy-breadcrumb {
  margin-bottom: 22px;
  font-size: 13px;
  color: var(--oy-ink-3);
}

.page-faq .faq-hero__frame {
  position: relative;
  padding: 34px 22px 32px;
  border: var(--oy-line);
  background: linear-gradient(155deg, rgba(15, 74, 58, 0.88) 0%, rgba(11, 59, 46, 0.46) 100%);
  clip-path: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 26px 100%, 0 calc(100% - 26px));
}

.page-faq .faq-hero__frame::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 104px;
  height: 7px;
  background: repeating-linear-gradient(90deg, var(--oy-lime) 0 2px, transparent 2px 9px);
  opacity: 0.72;
}

.page-faq .faq-hero h1 {
  margin: 0;
  max-width: 22ch;
  font-size: clamp(28px, 6.6vw, 52px);
  font-weight: 900;
  line-height: 1.24;
  letter-spacing: -0.015em;
  color: var(--oy-ink);
}

.page-faq .faq-hero .oy-lede {
  margin: 18px 0 0;
  max-width: 64ch;
  font-size: 16.5px;
  line-height: 1.9;
  color: var(--oy-ink-2);
}

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

/* ---------- 换设备三步 ---------- */

.page-faq .faq-flow {
  padding: 60px 0 24px;
  background: var(--oy-base);
}

.page-faq .faq-flow__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-faq .faq-flow__step {
  position: relative;
  z-index: 1;
  padding: 22px 20px 20px;
  border: var(--oy-line);
  background: linear-gradient(170deg, var(--oy-panel) 0%, rgba(11, 59, 46, 0.9) 100%);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px));
}

.page-faq .faq-flow__num {
  display: inline-block;
  min-width: 54px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--oy-lime);
  font-size: 30px;
  line-height: 1;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--oy-lime);
}

.page-faq .faq-flow__step:nth-child(3) .faq-flow__num {
  border-bottom-color: var(--oy-orange);
  color: var(--oy-orange);
}

.page-faq .faq-flow__step h3 {
  margin: 14px 0 0;
  font-size: 19px;
  font-weight: 900;
  line-height: 1.5;
  color: var(--oy-ink);
}

.page-faq .faq-flow__step p {
  margin: 10px 0 0;
  font-size: 15.5px;
  line-height: 1.88;
  color: var(--oy-ink-2);
}

.page-faq .faq-flow__step p.faq-flow__expect {
  margin-top: 16px;
  padding: 10px 0 0 12px;
  border-top: 1px solid var(--oy-grid);
  border-left: 2px solid var(--oy-lime-dim);
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--oy-ink-2);
}

.page-faq .faq-flow__step:nth-child(3) p.faq-flow__expect {
  border-left-color: var(--oy-orange);
}

.page-faq .faq-flow__figure {
  margin: 30px 0 0;
}

.page-faq .faq-flow__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: var(--oy-line);
  background: var(--oy-panel);
  object-fit: cover;
}

/* ---------- 现象索引 + 步骤内容 ---------- */

.page-faq .faq-diag {
  padding: 68px 0 20px;
  background: var(--oy-base);
}

.page-faq .faq-diag__figure {
  margin: 0 0 34px;
  max-width: 860px;
}

.page-faq .faq-diag__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: var(--oy-line);
  background: var(--oy-panel);
  object-fit: cover;
}

.page-faq .faq-diag__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

/* 左栏索引 */

.page-faq .faq-index__group + .faq-index__group {
  margin-top: 22px;
}

.page-faq .faq-index__group h3 {
  margin: 0 0 8px;
  font-family: var(--oy-font-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--oy-ink-3);
}

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

.page-faq .faq-index__list a {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  padding: 9px 10px 9px 8px;
  border-left: 3px solid transparent;
  color: var(--oy-ink-2);
  font-size: 15px;
  line-height: 1.6;
  text-decoration: none;
  transition: color 0.2s var(--oy-ease), background-color 0.2s var(--oy-ease), border-color 0.2s var(--oy-ease);
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  color: var(--oy-ink);
  background: rgba(198, 255, 61, 0.07);
  border-left-color: var(--oy-lime);
}

.page-faq .faq-index__n {
  font-family: var(--oy-font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--oy-ink-3);
}

/* 右栏步骤 */

.page-faq .faq-detail {
  display: grid;
  gap: 10px;
  min-width: 0;
}

.page-faq .faq-item {
  border: var(--oy-line);
  background: var(--oy-panel);
  scroll-margin-top: 130px;
}

.page-faq .faq-item[open] {
  box-shadow: inset 4px 0 0 var(--oy-lime);
  background: linear-gradient(100deg, rgba(198, 255, 61, 0.05) 0%, var(--oy-panel) 30%);
}

.page-faq .faq-item__summary {
  position: relative;
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 12px;
  align-items: center;
  padding: 15px 48px 15px 16px;
  cursor: pointer;
  list-style: none;
}

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

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

.page-faq .faq-item__summary::after {
  content: "";
  position: absolute;
  right: 20px;
  top: 50%;
  width: 9px;
  height: 9px;
  margin-top: -6px;
  border-right: 2px solid var(--oy-ink-3);
  border-bottom: 2px solid var(--oy-ink-3);
  transform: rotate(45deg);
  transition: transform 0.22s var(--oy-ease), border-color 0.22s var(--oy-ease), margin-top 0.22s var(--oy-ease);
}

.page-faq .faq-item[open] .faq-item__summary::after {
  margin-top: -2px;
  transform: rotate(-135deg);
  border-color: var(--oy-lime);
}

.page-faq .faq-item__num {
  font-size: 20px;
  line-height: 1.2;
  letter-spacing: 0.02em;
  color: var(--oy-ink-3);
}

.page-faq .faq-item[open] .faq-item__num {
  color: var(--oy-lime);
}

.page-faq .faq-item__name {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--oy-ink);
}

.page-faq .faq-item__body {
  padding: 0 18px 20px;
  border-top: 1px solid var(--oy-grid);
}

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

.page-faq .faq-steps > li {
  counter-increment: faqstep;
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  font-size: 16px;
  line-height: 1.92;
  color: var(--oy-ink-2);
}

.page-faq .faq-steps > li::before {
  content: "0" counter(faqstep);
  font-family: var(--oy-font-mono);
  font-size: 13px;
  line-height: 1.92;
  letter-spacing: 0.04em;
  color: var(--oy-lime-dim);
  border-top: 1px solid var(--oy-grid);
  padding-top: 4px;
}

/* ---------- 提示条 ---------- */

.page-faq .faq-notice {
  margin-top: 38px;
  border: var(--oy-line);
  border-left: 4px solid var(--oy-orange);
  background: linear-gradient(96deg, rgba(255, 122, 61, 0.13) 0%, rgba(15, 74, 58, 0.72) 44%, rgba(15, 74, 58, 0.5) 100%);
}

.page-faq .faq-notice__bar {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 46px 14px 18px;
  cursor: pointer;
  list-style: none;
}

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

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

.page-faq .faq-notice__bar::after {
  content: "";
  position: absolute;
  right: 18px;
  top: 50%;
  width: 12px;
  height: 12px;
  margin-top: -6px;
  background:
    linear-gradient(45deg, transparent 44%, var(--oy-orange) 44% 56%, transparent 56%),
    linear-gradient(-45deg, transparent 44%, var(--oy-orange) 44% 56%, transparent 56%);
  opacity: 0.9;
}

.page-faq .faq-notice__dot {
  flex: none;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--oy-orange);
  box-shadow: 0 0 0 4px rgba(255, 122, 61, 0.18);
}

.page-faq .faq-notice__label {
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--oy-ink);
}

.page-faq .faq-notice__body {
  padding: 0 18px 20px;
}

.page-faq .faq-notice__body p {
  margin: 0 0 10px;
  max-width: 78ch;
  font-size: 15.5px;
  line-height: 1.88;
  color: var(--oy-ink-2);
}

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

/* ---------- 还没解决 ---------- */

.page-faq .faq-help {
  margin-top: 64px;
  padding: 56px 0 76px;
  border-top: var(--oy-line);
  background: linear-gradient(180deg, var(--oy-base) 0%, var(--oy-deep) 100%);
}

.page-faq .faq-help__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

.page-faq .faq-help__intro h2 {
  margin: 0 0 14px;
  font-size: clamp(23px, 4.2vw, 34px);
  font-weight: 900;
  line-height: 1.3;
  color: var(--oy-ink);
}

.page-faq .faq-help__intro p {
  margin: 0 0 12px;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.9;
  color: var(--oy-ink-2);
}

.page-faq .faq-help__intro a {
  color: var(--oy-lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(198, 255, 61, 0.4);
}

.page-faq .faq-help__intro a:hover,
.page-faq .faq-help__intro a:focus-visible {
  border-bottom-color: var(--oy-lime);
}

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

.page-faq .faq-help__list li {
  padding: 14px 18px;
  border: var(--oy-line);
  background: linear-gradient(160deg, var(--oy-panel) 0%, rgba(11, 59, 46, 0.82) 100%);
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--oy-ink-2);
}

.page-faq .faq-help__list strong {
  display: block;
  margin-bottom: 5px;
  font-family: var(--oy-font-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--oy-ink-3);
}

.page-faq .faq-help__list a {
  color: var(--oy-lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(198, 255, 61, 0.35);
}

.page-faq .faq-help__list a:hover,
.page-faq .faq-help__list a:focus-visible {
  border-bottom-color: var(--oy-lime);
}

/* ---------- 移动端收尾 ---------- */

@media (max-width: 767px) {
  .page-faq .faq-item {
    scroll-margin-top: 160px;
  }

  .page-faq .faq-steps > li {
    grid-template-columns: 30px minmax(0, 1fr);
    gap: 10px;
    font-size: 15.5px;
  }
}

/* ---------- 平板 ---------- */

@media (min-width: 700px) {
  .page-faq .faq-hero {
    padding: 36px 0 64px;
  }

  .page-faq .faq-hero__frame {
    padding: 46px 40px 42px;
  }

  .page-faq .faq-flow {
    padding: 76px 0 28px;
  }

  .page-faq .faq-flow__step {
    padding: 26px 24px 24px;
  }

  .page-faq .faq-item__summary {
    padding: 17px 52px 17px 20px;
  }

  .page-faq .faq-item__body {
    padding: 0 22px 24px;
  }

  .page-faq .faq-notice__bar {
    padding: 16px 52px 16px 22px;
  }

  .page-faq .faq-notice__body {
    padding: 0 22px 24px;
  }
}

/* ---------- 桌面 ---------- */

@media (min-width: 880px) {
  .page-faq .faq-flow__steps {
    position: relative;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }

  .page-faq .faq-flow__steps::before {
    content: "";
    position: absolute;
    left: 5%;
    right: 5%;
    top: 36px;
    height: 1px;
    background: linear-gradient(90deg, var(--oy-grid) 0%, var(--oy-lime-dim) 52%, var(--oy-orange) 100%);
    opacity: 0.85;
    z-index: 0;
  }

  .page-faq .faq-hero h1 {
    max-width: 18ch;
  }

  .page-faq .faq-help {
    padding: 72px 0 96px;
  }

  .page-faq .faq-help__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-diag {
    padding: 84px 0 28px;
  }

  .page-faq .faq-diag__grid {
    grid-template-columns: minmax(230px, 292px) minmax(0, 1fr);
    gap: 52px;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 108px;
  }
}

/* ---------- 动效降级 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__list a,
  .page-faq .faq-item__summary::after {
    transition: none;
  }
}