.page-faq {
  --faq-panel: #0A2A42;
  --faq-line: rgba(185, 205, 214, .2);
  --faq-line-strong: rgba(155, 247, 236, .38);
  --faq-radius: var(--radius-md);
  color: var(--mist-050);
  padding: clamp(20px, 4vw, 40px) 0 clamp(48px, 8vw, 104px);
  background:
    radial-gradient(90% 45% at 100% 0%, rgba(24, 224, 200, .13), transparent 58%),
    radial-gradient(70% 42% at 0% 8%, rgba(19, 91, 120, .5), transparent 62%),
    var(--ink-950);
}

.page-faq *,
.page-faq *::before,
.page-faq *::after {
  box-sizing: border-box;
}

.page-faq .media__frame {
  overflow: hidden;
  border: 1px solid var(--faq-line);
  border-radius: var(--faq-radius);
  background: var(--ink-800);
}

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

.page-faq .media__caption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate-300);
}

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

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  padding-top: clamp(22px, 4vw, 52px);
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-cn);
  font-size: clamp(32px, 8vw, 66px);
  line-height: 1.08;
  letter-spacing: -.02em;
  font-weight: 800;
  color: #fff;
  max-width: 14em;
}

.page-faq .faq-hero__title em {
  font-style: normal;
  display: inline-block;
  color: var(--cyan-200);
}

.page-faq .faq-hero__text {
  margin: clamp(16px, 3vw, 24px) 0 0;
  max-width: 36em;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.8;
  color: var(--slate-300);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-faq .faq-hero__aside {
  display: grid;
  gap: 18px;
  align-content: start;
  padding: clamp(18px, 3vw, 26px);
  border: 1px solid var(--faq-line);
  border-radius: var(--faq-radius);
  background: linear-gradient(180deg, rgba(10, 42, 66, .88), rgba(4, 18, 31, .5));
  box-shadow: var(--shadow-soft);
}

.page-faq .faq-stats {
  margin: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-stats__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--faq-line);
}

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

.page-faq .faq-stats dt {
  font-size: 13px;
  line-height: 1.6;
  color: var(--slate-300);
}

.page-faq .faq-stats dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 20px;
  color: var(--cyan-200);
  white-space: nowrap;
}

.page-faq .faq-stats dd em {
  font-style: normal;
  margin-left: 3px;
  font-size: 12px;
  color: var(--slate-300);
}

/* ---------- 三步 ---------- */
.page-faq .faq-path {
  margin-top: clamp(48px, 8vw, 92px);
}

.page-faq .faq-path__title,
.page-faq .faq-ask__title,
.page-faq .faq-contact__title,
.page-faq .faq-next__title {
  margin: 12px 0 0;
  font-family: var(--font-cn);
  font-size: clamp(24px, 4.4vw, 40px);
  line-height: 1.22;
  letter-spacing: -.015em;
  font-weight: 700;
  color: #fff;
  max-width: 18em;
}

.page-faq .faq-steps {
  list-style: none;
  margin: clamp(22px, 4vw, 36px) 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .faq-step {
  position: relative;
  display: grid;
  gap: 10px;
  align-content: start;
  padding: clamp(18px, 3vw, 26px);
  border: 1px solid var(--faq-line);
  border-radius: var(--faq-radius);
  background: linear-gradient(160deg, rgba(10, 42, 66, .72), rgba(4, 18, 31, .38));
  transition: border-color .3s var(--ease), transform .3s var(--ease);
}

.page-faq .faq-step:hover {
  border-color: var(--faq-line-strong);
  transform: translateY(-2px);
}

.page-faq .faq-step__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--amber-500);
}

.page-faq .faq-step h3 {
  margin: 0;
  font-size: clamp(17px, 2.4vw, 20px);
  line-height: 1.45;
  font-weight: 700;
  color: #fff;
}

.page-faq .faq-step p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--slate-300);
}

.page-faq .faq-step .btn--quiet {
  font-size: 14px;
  padding-left: 0;
  color: var(--cyan-200);
}

.page-faq .faq-path__figure {
  margin: clamp(22px, 4vw, 34px) 0 0;
}

/* ---------- 问答 ---------- */
.page-faq .faq-ask {
  margin-top: clamp(48px, 8vw, 92px);
}

.page-faq .faq-board {
  position: relative;
  margin-top: clamp(20px, 3vw, 30px);
}

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

.page-faq .faq-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-tab {
  display: inline-flex;
  align-items: center;
  padding: 8px 15px;
  border: 1px solid var(--faq-line);
  border-radius: 999px;
  background: rgba(10, 42, 66, .55);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--slate-300);
  cursor: pointer;
  transition: color .25s var(--ease), background .25s var(--ease), border-color .25s var(--ease);
}

.page-faq .faq-tab:hover {
  border-color: var(--faq-line-strong);
  color: var(--mist-050);
}

.page-faq #cat-all:checked ~ .faq-tabs label[for="cat-all"],
.page-faq #cat-entry:checked ~ .faq-tabs label[for="cat-entry"],
.page-faq #cat-mobile:checked ~ .faq-tabs label[for="cat-mobile"],
.page-faq #cat-client:checked ~ .faq-tabs label[for="cat-client"],
.page-faq #cat-update:checked ~ .faq-tabs label[for="cat-update"],
.page-faq #cat-contact:checked ~ .faq-tabs label[for="cat-contact"] {
  color: var(--ink-950);
  background: var(--cyan-500);
  border-color: var(--cyan-500);
  font-weight: 700;
}

.page-faq .faq-list {
  display: grid;
  gap: 10px;
  margin-top: 20px;
}

.page-faq #cat-entry:checked ~ .faq-list .faq-item:not([data-cat="entry"]),
.page-faq #cat-mobile:checked ~ .faq-list .faq-item:not([data-cat="mobile"]),
.page-faq #cat-client:checked ~ .faq-list .faq-item:not([data-cat="client"]),
.page-faq #cat-update:checked ~ .faq-list .faq-item:not([data-cat="update"]),
.page-faq #cat-contact:checked ~ .faq-list .faq-item:not([data-cat="contact"]) {
  display: none;
}

.page-faq .faq-item {
  border: 1px solid var(--faq-line);
  border-radius: var(--faq-radius);
  background: rgba(10, 42, 66, .45);
  overflow: hidden;
  transition: border-color .3s var(--ease), background .3s var(--ease);
}

.page-faq .faq-item[open] {
  border-color: var(--faq-line-strong);
  background: rgba(10, 42, 66, .8);
}

.page-faq .faq-item summary {
  display: grid;
  grid-template-columns: 16px minmax(0, 1fr);
  column-gap: 12px;
  row-gap: 6px;
  padding: clamp(15px, 3vw, 20px) clamp(16px, 3vw, 22px);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item summary::before {
  content: "+";
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1.4;
  color: var(--cyan-500);
}

.page-faq .faq-item[open] summary::before {
  content: "–";
  color: var(--amber-500);
}

.page-faq .faq-item__q {
  grid-column: 2;
  font-size: clamp(15px, 2vw, 16.5px);
  line-height: 1.55;
  font-weight: 600;
  color: #fff;
}

.page-faq .faq-tag {
  grid-column: 2;
  justify-self: start;
  padding: 2px 9px;
  border-radius: 999px;
  border: 1px solid rgba(24, 224, 200, .3);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--cyan-200);
}

.page-faq .faq-item__a {
  margin: 0;
  padding: 0 clamp(16px, 3vw, 22px) clamp(16px, 3vw, 20px) calc(clamp(16px, 3vw, 22px) + 28px);
  font-size: 15px;
  line-height: 1.85;
  color: var(--slate-300);
}

/* ---------- 联系 ---------- */
.page-faq .faq-contact {
  display: grid;
  gap: clamp(22px, 4vw, 36px);
  margin-top: clamp(48px, 8vw, 92px);
  padding: clamp(22px, 4vw, 40px);
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, rgba(19, 91, 120, .5), rgba(4, 18, 31, .92) 70%);
}

.page-faq .faq-channels {
  list-style: none;
  margin: clamp(18px, 3vw, 26px) 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-channel {
  display: grid;
  gap: 4px;
  padding: 13px 16px;
  border-left: 2px solid var(--cyan-500);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: rgba(4, 18, 31, .55);
}

.page-faq .faq-channel--accent {
  border-left-color: var(--amber-500);
}

.page-faq .faq-channel__key {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .12em;
  color: var(--slate-300);
}

.page-faq .faq-channel__val {
  font-size: clamp(15px, 2vw, 17px);
  line-height: 1.5;
  font-weight: 600;
  color: #fff;
  word-break: break-word;
}

.page-faq .faq-channel__note {
  font-size: 13px;
  line-height: 1.6;
  color: var(--slate-300);
}

.page-faq .faq-contact__note {
  margin: 16px 0 0;
  padding: 12px 14px;
  border: 1px dashed rgba(255, 180, 74, .4);
  border-radius: var(--radius-sm);
  font-size: 13px;
  line-height: 1.75;
  color: var(--amber-500);
}

.page-faq .faq-contact__addr {
  margin: 12px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--slate-300);
}

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

/* ---------- 还没解决 ---------- */
.page-faq .faq-next {
  display: grid;
  gap: 20px;
  margin-top: clamp(40px, 6vw, 76px);
  padding-top: clamp(24px, 4vw, 40px);
  border-top: 1px solid var(--faq-line);
}

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

.page-faq .faq-next__list li {
  padding-left: 16px;
  position: relative;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--slate-300);
}

.page-faq .faq-next__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan-500);
}

.page-faq .faq-next__list strong {
  color: var(--mist-050);
  margin-right: 6px;
}

.page-faq .faq-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1fr) 276px;
    align-items: start;
  }

  .page-faq .faq-contact {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    align-items: center;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1fr) 320px;
  }

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

  .page-faq .faq-step:nth-child(2) {
    margin-top: 24px;
  }

  .page-faq .faq-step:nth-child(3) {
    margin-top: 8px;
  }

  .page-faq .faq-next {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }

  .page-faq .faq-item__a {
    max-width: 62ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-step,
  .page-faq .faq-item,
  .page-faq .faq-tab {
    transition: none;
  }

  .page-faq .faq-step:hover {
    transform: none;
  }
}