.page-faq {
  --faq-gap: clamp(20px, 3vw, 32px);
  --faq-edge: clamp(14px, 2.4vw, 22px);
  padding-bottom: clamp(56px, 9vw, 104px);
  background:
    radial-gradient(120% 55% at 82% 0%, rgba(34, 224, 196, 0.07), transparent 62%),
    linear-gradient(180deg, var(--ink-deep) 0%, var(--ink-mid) 46%, var(--ink-deep) 100%);
}

.page-faq .faq-crumb {
  padding-top: clamp(18px, 3vw, 28px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(20px, 4vw, 46px) 0 clamp(26px, 4vw, 44px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: -34%;
  right: -14%;
  width: min(620px, 76%);
  aspect-ratio: 1 / 1;
  background: repeating-radial-gradient(circle at center, rgba(34, 224, 196, 0.14) 0 1px, transparent 1px 30px);
  -webkit-mask-image: radial-gradient(circle at center, #000 0%, transparent 72%);
  mask-image: radial-gradient(circle at center, #000 0%, transparent 72%);
  pointer-events: none;
}

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

.page-faq .faq-hero h1 {
  margin: clamp(10px, 2vw, 18px) 0 0;
  max-width: 20em;
}

.page-faq .faq-hero .lede {
  margin: clamp(14px, 2vw, 20px) 0 0;
  color: var(--muted);
  max-width: 40em;
}

.page-faq .faq-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 18px;
  margin: clamp(22px, 3.4vw, 34px) 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-metrics__item {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding-left: 12px;
  border-left: 2px solid var(--cyan);
}

.page-faq .faq-metrics__item:nth-child(2) {
  border-left-color: var(--amber);
}

.page-faq .faq-metrics__item:nth-child(3) {
  border-left-color: var(--press);
}

.page-faq .faq-metrics__item:nth-child(4) {
  border-left-color: var(--muted);
}

.page-faq .faq-metrics__value {
  font-family: var(--font-data);
  font-size: clamp(1.35rem, 3.4vw, 1.6rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-metrics__label {
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  color: var(--muted);
}

/* ---------- 分类跳转 ---------- */
.page-faq .faq-jump {
  border-bottom: 1px solid var(--line);
  background: var(--ink-soft);
}

.page-faq .faq-jump__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 14px 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.page-faq .faq-jump__list a {
  display: inline-block;
  white-space: nowrap;
  padding: 6px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--paper);
  text-decoration: none;
  transition: border-color 140ms var(--ease-out), color 140ms var(--ease-out);
}

.page-faq .faq-jump__list a:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

/* ---------- 通用区块头 ---------- */
.page-faq .faq-section {
  padding-top: clamp(36px, 6vw, 64px);
}

.page-faq .faq-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
  margin-bottom: var(--faq-gap);
}

.page-faq .faq-head h2 {
  margin: 0;
}

.page-faq .faq-head__num {
  margin: 0;
  padding-top: 5px;
  font-family: var(--font-data);
  font-size: clamp(1.05rem, 2.6vw, 1.3rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan);
}

.page-faq .faq-head__sub {
  margin: 8px 0 0;
  max-width: 42em;
  font-size: 0.94rem;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 设备切换 ---------- */
.page-faq .device-switch {
  position: relative;
}

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

.page-faq .device-switch__radio:focus-visible ~ .device-switch__tabs {
  outline: 2px solid var(--amber);
  outline-offset: 4px;
}

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

.page-faq .device-switch__tab {
  position: relative;
  padding: 10px 16px;
  margin-bottom: -1px;
  border-bottom: 2px solid transparent;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--muted);
  cursor: pointer;
  user-select: none;
  transition: color 140ms var(--ease-out), border-color 140ms var(--ease-out);
}

.page-faq .device-switch__tab:hover {
  color: var(--paper);
}

.page-faq #faq-dev-apple:checked ~ .device-switch__tabs .device-switch__tab[for="faq-dev-apple"],
.page-faq #faq-dev-phone:checked ~ .device-switch__tabs .device-switch__tab[for="faq-dev-phone"] {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-faq .device-switch__panel {
  display: none;
  padding: clamp(18px, 3vw, 28px);
  border: 1px solid var(--line);
  border-top: none;
}

.page-faq #faq-dev-apple:checked ~ .device-switch__panel--a,
.page-faq #faq-dev-phone:checked ~ .device-switch__panel--b {
  display: block;
  animation: faq-panel-in 240ms var(--ease-out) both;
}

.page-faq .device-switch__panel--a {
  background:
    linear-gradient(135deg, rgba(34, 224, 196, 0.09), transparent 62%),
    var(--ink-soft);
}

.page-faq .device-switch__panel--b {
  background: var(--paper);
  border-color: var(--paper-2);
  box-shadow: 5px 5px 0 rgba(0, 0, 0, 0.26);
}

.page-faq .device-switch__title {
  margin: 0;
  font-family: var(--font-head);
  font-size: 1.05rem;
  font-weight: 800;
  line-height: 1.3;
  color: var(--paper);
}

.page-faq .device-switch__panel--b .device-switch__title {
  color: var(--press);
}

.page-faq .device-switch__lead {
  margin: 8px 0 0;
  max-width: 40em;
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .device-switch__panel--b .device-switch__lead {
  color: #3B4A45;
}

.page-faq .device-steps {
  display: grid;
  gap: 10px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .device-steps li {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  font-size: 0.94rem;
  line-height: 1.7;
  color: var(--paper);
}

.page-faq .device-switch__panel--b .device-steps li {
  color: var(--charcoal);
}

.page-faq .device-steps__n {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  margin-top: 1px;
  border: 1px solid var(--cyan);
  border-radius: 2px;
  font-family: var(--font-data);
  font-size: 0.74rem;
  font-weight: 700;
  color: var(--cyan);
}

.page-faq .device-switch__panel--b .device-steps__n {
  border-color: var(--press);
  color: var(--press);
}

/* ---------- 图片 / 图注 ---------- */
.page-faq .faq-figure {
  margin: clamp(24px, 4vw, 36px) 0 0;
}

.page-faq .faq-figure__frame {
  border: 1px solid var(--line);
  background: var(--ink-soft);
  box-shadow: 6px 6px 0 rgba(0, 0, 0, 0.28);
  overflow: hidden;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-faq .faq-figure__caption {
  margin: 12px 0 0;
  max-width: 46em;
  font-size: 0.84rem;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 10px;
}

.page-faq .faq-item {
  border: 1px solid var(--line);
  background: rgba(16, 42, 34, 0.5);
  transition: border-color 140ms var(--ease-out), background-color 140ms var(--ease-out);
}

.page-faq .faq-item[open] {
  border-color: rgba(34, 224, 196, 0.5);
  background: var(--ink-soft);
}

.page-faq .faq-item__q {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr) 16px;
  gap: 12px;
  align-items: start;
  padding: 16px var(--faq-edge);
  list-style: none;
  cursor: pointer;
  font-size: 0.99rem;
  font-weight: 700;
  line-height: 1.55;
  color: var(--paper);
}

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

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

.page-faq .faq-item__q::after {
  content: "";
  width: 8px;
  height: 8px;
  align-self: center;
  justify-self: end;
  margin-top: -4px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(45deg);
  transition: transform 180ms var(--ease-out);
}

.page-faq .faq-item[open] .faq-item__q::after {
  transform: rotate(225deg);
}

.page-faq .faq-item__idx {
  font-family: var(--font-data);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.85;
  color: var(--cyan);
}

.page-faq .faq-item__a {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 12px;
  padding: 0 var(--faq-edge) 18px;
}

.page-faq .faq-item__a > p {
  grid-column: 2;
  margin: 0 0 10px;
  max-width: 38em;
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--muted);
}

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

.page-faq .faq-item__a a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-item__a a:hover {
  color: var(--amber);
}

/* ---------- 步骤串 ---------- */
.page-faq .faq-steps {
  display: grid;
  gap: 12px;
  margin: 0 0 clamp(22px, 3.4vw, 32px);
  padding: 0;
  list-style: none;
}

.page-faq .faq-steps__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--amber);
  background: rgba(16, 42, 34, 0.44);
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--paper);
}

.page-faq .faq-steps__num {
  font-family: var(--font-data);
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--amber);
}

/* ---------- 求助方式 ---------- */
.page-faq .faq-contact {
  display: grid;
  gap: 14px;
}

.page-faq .faq-contact__card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(18px, 2.8vw, 26px);
  border: 1px solid var(--line);
  border-top: 3px solid var(--cyan);
  background: rgba(16, 42, 34, 0.52);
}

.page-faq .faq-contact__card:nth-child(2) {
  border-top-color: var(--amber);
}

.page-faq .faq-contact__card:nth-child(3) {
  border-top-color: var(--press);
}

.page-faq .faq-contact__label {
  margin: 0;
  font-family: var(--font-data);
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-faq .faq-contact__title {
  margin: 0;
  font-family: var(--font-head);
  font-size: 1.04rem;
  font-weight: 800;
  line-height: 1.35;
  color: var(--paper);
}

.page-faq .faq-contact__body {
  margin: 0;
  flex: 1 1 auto;
  font-size: 0.92rem;
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .faq-contact__card .btn {
  align-self: flex-start;
}

.page-faq .faq-contact__meta {
  margin: 0;
  font-family: var(--font-data);
  font-size: 0.82rem;
  letter-spacing: 0.01em;
  color: var(--cyan);
  overflow-wrap: anywhere;
}

.page-faq .faq-contact__meta--lg {
  font-size: 1.24rem;
  font-weight: 700;
  color: var(--amber);
}

/* ---------- 页尾指引 ---------- */
.page-faq .faq-foot {
  margin-top: clamp(28px, 4.5vw, 44px);
  padding: 18px clamp(16px, 2.6vw, 24px);
  border: 1px dashed var(--line);
  border-left: 4px solid var(--cyan);
  background: rgba(10, 28, 23, 0.6);
}

.page-faq .faq-foot p {
  margin: 0;
  max-width: 52em;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-foot a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-foot a:hover {
  color: var(--amber);
}

/* ---------- 动效 ---------- */
@keyframes faq-panel-in {
  from {
    opacity: 0;
    transform: translateY(5px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq #faq-dev-apple:checked ~ .device-switch__panel--a,
  .page-faq #faq-dev-phone:checked ~ .device-switch__panel--b {
    animation: none;
  }
  .page-faq .faq-item__q::after,
  .page-faq .faq-jump__list a,
  .page-faq .faq-item {
    transition: none;
  }
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-metrics {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-steps__item {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
    align-content: start;
  }
}

@media (min-width: 760px) {
  .page-faq .faq-contact {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-item__q {
    grid-template-columns: 38px minmax(0, 1fr) 18px;
    gap: 16px;
    padding: 18px 24px;
  }

  .page-faq .faq-item__a {
    grid-template-columns: 38px minmax(0, 1fr);
    gap: 16px;
    padding: 0 24px 22px;
  }

  .page-faq .faq-item__idx {
    line-height: 1.95;
  }
}

@media (max-width: 480px) {
  .page-faq .faq-item__q {
    grid-template-columns: 26px minmax(0, 1fr) 14px;
    gap: 10px;
    font-size: 0.95rem;
  }

  .page-faq .faq-item__a {
    grid-template-columns: 26px minmax(0, 1fr);
    gap: 10px;
  }

  .page-faq .faq-contact__meta {
    font-size: 0.78rem;
  }

  .page-faq .faq-contact__meta--lg {
    font-size: 1.1rem;
  }
}