.page-faq {
  --faq-gap: clamp(20px, 3vw, 36px);
  --faq-no-w: 30px;
  background: var(--ink);
  color: var(--paper);
  padding-bottom: clamp(52px, 8vw, 104px);
  overflow-x: hidden;
}

.page-faq .crumbs {
  margin-top: clamp(18px, 3vw, 30px);
}

/* ---------- 首屏框景 ---------- */
.page-faq .faq-hero {
  padding: clamp(20px, 3.5vw, 40px) 0 clamp(32px, 5vw, 60px);
}

.page-faq .faq-hero__frame {
  position: relative;
  border: var(--border);
  background:
    linear-gradient(155deg, rgba(20, 25, 36, 0.96) 0%, rgba(11, 14, 19, 0.99) 58%);
  box-shadow: var(--shadow-hard);
  padding: clamp(20px, 3.4vw, 46px);
}

.page-faq .faq-hero__frame::before,
.page-faq .faq-hero__frame::after {
  content: "";
  position: absolute;
  width: 20px;
  height: 20px;
  border: 2px solid var(--cyan);
  pointer-events: none;
}

.page-faq .faq-hero__frame::before {
  top: -2px;
  left: -2px;
  border-right: 0;
  border-bottom: 0;
}

.page-faq .faq-hero__frame::after {
  right: -2px;
  bottom: -2px;
  border-top: 0;
  border-left: 0;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .faq-hero__kicker {
  margin: 0 0 14px;
  color: var(--mist);
}

.page-faq .faq-hero__title {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 5.2vw, 60px);
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-hero__accent {
  display: block;
  color: var(--gold);
}

.page-faq .faq-hero__desc {
  margin: 0 0 24px;
  max-width: 56ch;
  font-size: clamp(16px, 1.5vw, 18px);
  line-height: 1.78;
  color: var(--mist);
}

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

.page-faq .faq-hero__media .media-frame {
  height: 100%;
}

/* ---------- 问题分类 ---------- */
.page-faq .faq-index {
  padding: clamp(28px, 4vw, 48px) 0;
  border-top: var(--line-faint);
  border-bottom: var(--line-faint);
  background: linear-gradient(180deg, rgba(20, 25, 36, 0.55), rgba(11, 14, 19, 0));
}

.page-faq .faq-index__title {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(20px, 2.4vw, 26px);
  letter-spacing: -0.01em;
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr;
}

.page-faq .faq-index__item {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "no label"
    "no hint";
  column-gap: 14px;
  row-gap: 4px;
  padding: 16px 18px;
  border: 3px solid var(--iron);
  background: var(--ink-2);
  color: var(--paper);
  text-decoration: none;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
}

.page-faq .faq-index__item:hover,
.page-faq .faq-index__item:focus-visible {
  transform: translateY(-2px);
  border-color: var(--cyan);
  box-shadow: var(--shadow-tight);
}

.page-faq .faq-index__no {
  grid-area: no;
  align-self: start;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--gold);
  padding-top: 3px;
}

.page-faq .faq-index__label {
  grid-area: label;
  font-weight: 800;
  font-size: 17px;
  letter-spacing: -0.01em;
}

.page-faq .faq-index__hint {
  grid-area: hint;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

/* ---------- 高亮区块：版本与收费 ---------- */
.page-faq .faq-spotlight {
  padding: clamp(36px, 5.5vw, 70px) 0;
}

.page-faq .faq-spotlight__frame {
  position: relative;
  border: 3px solid var(--gold);
  box-shadow: 8px 8px 0 var(--hard);
  background:
    linear-gradient(180deg, rgba(216, 166, 43, 0.1) 0%, rgba(20, 25, 36, 0.97) 38%);
  padding: clamp(22px, 3.6vw, 50px);
}

.page-faq .faq-spotlight__frame::before {
  content: "";
  position: absolute;
  top: -3px;
  right: -3px;
  width: 46px;
  height: 46px;
  border-top: 3px solid var(--lemon);
  border-right: 3px solid var(--lemon);
  pointer-events: none;
}

.page-faq .faq-spotlight__kicker {
  margin: 0 0 12px;
  color: var(--gold);
}

.page-faq .faq-spotlight__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 3.6vw, 44px);
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-spotlight__lead {
  margin: 0 0 clamp(24px, 3vw, 36px);
  max-width: 68ch;
  font-size: 17px;
  line-height: 1.78;
  color: var(--mist);
}

.page-faq .faq-spotlight__col {
  position: relative;
  padding: clamp(18px, 2.4vw, 28px);
  border: var(--line-soft);
  background: rgba(11, 14, 19, 0.62);
}

.page-faq .faq-spotlight__col--version {
  border-left: 3px solid var(--cyan);
}

.page-faq .faq-spotlight__col--fee {
  border-left: 3px solid var(--magenta);
  margin-top: 18px;
}

.page-faq .faq-spotlight__sub {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(19px, 2.1vw, 24px);
  letter-spacing: -0.01em;
  color: var(--gold);
}

.page-faq .faq-spotlight__text {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.78;
  color: var(--mist);
}

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

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

.page-faq .faq-spotlight__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0 0;
}

.page-faq .faq-channel-grid {
  display: grid;
  gap: 12px;
  margin: 0 0 14px;
}

.page-faq .faq-channel {
  border: 3px solid var(--iron);
  background: var(--ink-2);
  padding: 16px 18px;
}

.page-faq .faq-channel--urgent {
  border-color: rgba(255, 61, 139, 0.62);
  background: linear-gradient(180deg, rgba(255, 61, 139, 0.15), var(--ink-2) 62%);
}

.page-faq .faq-channel__name {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-faq .faq-channel__price {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.1;
  color: var(--gold);
}

.page-faq .faq-channel--urgent .faq-channel__price {
  color: var(--magenta);
}

.page-faq .faq-channel__line {
  margin: 0 0 6px;
  font-size: 15px;
  color: var(--paper);
}

.page-faq .faq-channel__use {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-spotlight__media {
  margin-top: clamp(20px, 3vw, 32px);
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-group {
  padding: clamp(28px, 4vw, 52px) 0;
  border-top: var(--line-faint);
}

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

.page-faq .faq-item {
  border: 3px solid var(--iron);
  background: var(--ink-2);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-item[open] {
  border-color: rgba(255, 61, 139, 0.62);
  background: var(--ink-3);
  box-shadow: inset 3px 0 0 var(--magenta);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-weight: 800;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.5;
  color: var(--paper);
  transition: color var(--dur) var(--ease);
}

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

.page-faq .faq-item__q:hover,
.page-faq .faq-item__q:focus-visible {
  color: var(--cyan);
}

.page-faq .faq-item__no {
  flex: 0 0 var(--faq-no-w);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.page-faq .faq-item[open] .faq-item__no {
  color: var(--magenta);
}

.page-faq .faq-item__text {
  flex: 1 1 auto;
}

.page-faq .faq-item__q::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--cyan);
}

.page-faq .faq-item[open] .faq-item__q::after {
  content: "−";
  color: var(--magenta);
}

.page-faq .faq-item__a {
  padding: 0 18px 18px;
  font-size: 16px;
  line-height: 1.78;
  color: var(--mist);
}

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

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

/* ---------- 三步自查 ---------- */
.page-faq .faq-trouble {
  padding: clamp(32px, 4.5vw, 58px) 0;
  border-top: var(--line-faint);
  background: linear-gradient(180deg, rgba(20, 25, 36, 0.6), rgba(11, 14, 19, 0));
}

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

.page-faq .faq-step {
  position: relative;
  border: var(--line-soft);
  border-left: 3px solid var(--lemon);
  background: rgba(20, 25, 36, 0.72);
  padding: 18px 20px 20px;
}

.page-faq .faq-step__no {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1;
  letter-spacing: 0.04em;
  color: var(--lemon);
}

.page-faq .faq-step__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  line-height: 1.5;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-step__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

/* ---------- 联系区块 ---------- */
.page-faq .faq-contact {
  padding: clamp(32px, 4.5vw, 64px) 0 0;
}

.page-faq .faq-contact__frame {
  border: 3px solid var(--gold);
  background: linear-gradient(190deg, rgba(20, 25, 36, 0.98), rgba(11, 14, 19, 0.99));
  box-shadow: 8px 8px 0 var(--hard);
  padding: clamp(22px, 3.4vw, 46px);
}

.page-faq .faq-contact__kicker {
  margin: 0 0 12px;
  color: var(--gold);
}

.page-faq .faq-contact__title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3.2vw, 38px);
  line-height: 1.16;
  letter-spacing: -0.01em;
}

.page-faq .faq-contact__text {
  margin: 0 0 14px;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--mist);
}

.page-faq .faq-contact__actions {
  margin: 22px 0 0;
}

.page-faq .faq-contact__side {
  margin-top: clamp(22px, 3vw, 32px);
  border: var(--line-soft);
  background: rgba(20, 25, 36, 0.8);
  padding: 18px 20px 20px;
}

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

.page-faq .faq-contact__row {
  padding: 12px 0;
  border-bottom: var(--line-faint);
}

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

.page-faq .faq-contact__label {
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-faq .faq-contact__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.6;
  color: var(--paper);
  overflow-wrap: anywhere;
}

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

.page-faq .faq-contact__note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: var(--line-faint);
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-index__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-channel-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-item__a {
    padding-left: calc(18px + var(--faq-no-w) + 14px);
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: 7fr 5fr;
    align-items: center;
  }

  .page-faq .faq-index__list {
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  }

  .page-faq .faq-spotlight__col--fee {
    margin-top: 0;
  }

  .page-faq .faq-spotlight__col + .faq-spotlight__col {
    margin-left: 0;
  }

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

  .page-faq .faq-contact__grid {
    display: grid;
    grid-template-columns: 7fr 5fr;
    gap: clamp(24px, 3vw, 44px);
    align-items: start;
  }

  .page-faq .faq-contact__side {
    margin-top: 0;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-spotlight__cols,
  .page-faq .faq-spotlight__frame > .faq-spotlight__col--version {
    margin-bottom: 0;
  }
}

@media (min-width: 1040px) {
  .page-faq .faq-spotlight__frame {
    display: grid;
    grid-template-columns: 1fr 1fr;
    column-gap: clamp(20px, 3vw, 36px);
  }

  .page-faq .faq-spotlight__head,
  .page-faq .faq-spotlight__media {
    grid-column: 1 / -1;
  }

  .page-faq .faq-spotlight__col--fee {
    margin-top: 0;
  }
}

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

  .page-faq .faq-index__item:hover,
  .page-faq .faq-index__item:focus-visible {
    transform: none;
  }
}