.page-faq {
  --faq-pad: clamp(56px, 8vw, 96px);
  --faq-gap: clamp(16px, 2.4vw, 24px);
  background: var(--ink-900);
  color: var(--paper);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-faq .wrap {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 clamp(16px, 4vw, 32px);
}

/* 首屏 */
.page-faq .faq-top {
  padding: clamp(88px, 12vw, 132px) 0 clamp(44px, 6vw, 68px);
  border-bottom: 2px solid var(--line-600);
  background:
    linear-gradient(180deg, var(--ink-800) 0%, var(--ink-900) 100%);
}

.page-faq .faq-top h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.85rem, 5vw, 3.2rem);
  line-height: 1.2;
  letter-spacing: 0.01em;
  margin: 18px 0 20px;
  max-width: 20em;
}

.page-faq .faq-lead {
  max-width: 34em;
  font-size: clamp(0.98rem, 1.6vw, 1.08rem);
  line-height: 1.85;
  color: var(--paper);
  margin: 0;
}

.page-faq .faq-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 3.6vw, 34px);
}

/* 章节骨架 */
.page-faq .faq-sec {
  padding: var(--faq-pad) 0;
  border-top: 2px solid var(--line-600);
}

.page-faq .faq-sec:first-of-type {
  border-top: 0;
}

.page-faq .faq-sec__head {
  margin-bottom: clamp(24px, 3.6vw, 40px);
}

.page-faq .faq-sec__head h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.35rem, 3.1vw, 2.05rem);
  line-height: 1.28;
  margin: 10px 0 0;
  max-width: 24em;
}

/* 01 三组索引 */
.page-faq .faq-index {
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .faq-index__card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 24px 20px 20px;
  background: var(--ink-700);
  border: 2px solid var(--line-600);
  border-top-width: 6px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-hard);
  color: var(--paper);
  text-decoration: none;
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-index__card--cyan { border-top-color: var(--signal); }
.page-faq .faq-index__card--amber { border-top-color: var(--amber); }
.page-faq .faq-index__card--mint { border-top-color: var(--mint); }

.page-faq .faq-index__card:hover,
.page-faq .faq-index__card:focus-visible {
  transform: translate(6px, 6px);
  box-shadow: 2px 2px 0 var(--line-600);
}

.page-faq .faq-index__card--cyan:hover,
.page-faq .faq-index__card--cyan:focus-visible { border-color: var(--signal); }
.page-faq .faq-index__card--amber:hover,
.page-faq .faq-index__card--amber:focus-visible { border-color: var(--amber); }
.page-faq .faq-index__card--mint:hover,
.page-faq .faq-index__card--mint:focus-visible { border-color: var(--mint); }

.page-faq .faq-index__count {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.28em;
  color: var(--muted);
  text-transform: uppercase;
}

.page-faq .faq-index__title {
  font-family: var(--font-display);
  font-size: 1.28rem;
  line-height: 1.3;
  margin: 0;
}

.page-faq .faq-index__desc {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-index__go {
  margin-top: auto;
  padding-top: 12px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  color: var(--paper);
  border-top: 2px solid var(--line-600);
}

/* 02 四步自查 */
.page-faq .faq-selfcheck {
  display: grid;
  gap: var(--faq-gap);
  align-items: start;
}

.page-faq .faq-check {
  display: grid;
  margin: 0;
  padding: 0;
  list-style: none;
  border: 2px solid var(--line-600);
  background: var(--ink-800);
  box-shadow: var(--shadow-soft);
}

.page-faq .faq-check__step {
  position: relative;
  padding: 22px 18px 20px;
  border-top: 2px solid var(--line-600);
}

.page-faq .faq-check__step:first-child {
  border-top: 0;
}

.page-faq .faq-check__step::before {
  content: "";
  position: absolute;
  top: -2px;
  left: 18px;
  width: 28px;
  height: 2px;
  background: var(--signal);
}

.page-faq .faq-check__no {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.28em;
  color: var(--signal);
  margin-bottom: 10px;
}

.page-faq .faq-check__title {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.5;
  margin: 0 0 8px;
}

.page-faq .faq-check__act {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--paper);
}

.page-faq .faq-check__result {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 2px dashed var(--line-600);
  font-size: 0.86rem;
  line-height: 1.7;
  color: var(--mint);
}

.page-faq .faq-shot {
  margin: 0;
  border: 2px solid var(--line-600);
  border-radius: var(--radius);
  background: var(--ink-700);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}

.page-faq .faq-shot img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(0.72) contrast(1.06);
}

.page-faq .faq-shot figcaption {
  padding: 12px 14px;
  border-top: 2px solid var(--line-600);
  font-size: 0.78rem;
  line-height: 1.7;
  color: var(--muted);
}

/* 03 兼容问题带背景 */
.page-faq .faq-band {
  position: relative;
  overflow: hidden;
  background: var(--ink-800);
}

.page-faq .faq-band__media {
  position: absolute;
  inset: 0;
  opacity: 0.3;
  pointer-events: none;
}

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

.page-faq .faq-band__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(7, 11, 20, 0.96) 0%, rgba(7, 11, 20, 0.78) 58%, rgba(7, 11, 20, 0.42) 100%);
}

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

/* 折叠条目 */
.page-faq .faq-list {
  display: grid;
  gap: 14px;
}

.page-faq .faq-item {
  border: 2px solid var(--line-600);
  border-radius: var(--radius);
  background: var(--ink-800);
  transition: border-color 0.2s var(--ease);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
  font-size: 0.98rem;
  font-weight: 600;
  line-height: 1.65;
  color: var(--paper);
  transition: color 0.2s var(--ease);
}

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

.page-faq .faq-item__sign {
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  border: 2px solid var(--line-600);
  font-family: var(--font-mono);
  font-size: 0.86rem;
  line-height: 1;
  color: var(--mint);
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease);
}

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

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

.page-faq .faq-item[open] .faq-item__sign {
  transform: rotate(45deg);
  border-color: var(--mint);
}

.page-faq .faq-item__a {
  margin: 0 18px 18px 56px;
  padding: 14px 16px;
  border-left: 2px solid var(--mint);
  background: var(--ink-900);
  font-size: 0.94rem;
  line-height: 1.85;
  color: var(--paper);
}

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

/* 04 换机顺序 */
.page-faq .faq-seq {
  display: grid;
  margin: 0;
  padding: 0;
  list-style: none;
  border: 2px solid var(--line-600);
  background: var(--ink-800);
  box-shadow: var(--shadow-soft);
}

.page-faq .faq-seq__item {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 18px;
}

.page-faq .faq-seq__item + .faq-seq__item {
  border-top: 2px solid var(--line-600);
}

.page-faq .faq-seq__no {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.1;
  color: var(--amber);
}

.page-faq .faq-seq__title {
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.5;
  margin: 0 0 6px;
}

.page-faq .faq-seq__text {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-note {
  margin: 20px 0 0;
  padding: 16px 18px;
  border: 2px solid var(--line-600);
  border-left: 6px solid var(--amber);
  background: var(--ink-700);
  font-size: 0.94rem;
  line-height: 1.85;
  color: var(--paper);
}

/* 06 转人工 */
.page-faq .faq-handoff {
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .faq-handoff__box {
  padding: 24px 22px;
  border: 2px solid var(--line-600);
  border-radius: var(--radius);
  background: var(--ink-700);
  box-shadow: var(--shadow-soft);
}

.page-faq .faq-handoff__title {
  font-family: var(--font-display);
  font-size: 1.18rem;
  line-height: 1.35;
  margin: 0 0 12px;
}

.page-faq .faq-handoff__list {
  margin: 0;
  padding-left: 1.15em;
  font-size: 0.94rem;
  line-height: 1.9;
  color: var(--paper);
}

.page-faq .faq-handoff__list li::marker {
  color: var(--amber);
}

.page-faq .faq-handoff__text {
  margin: 14px 0 0;
  font-size: 0.92rem;
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .faq-handoff__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  padding: 12px 0;
  border-bottom: 2px solid var(--line-600);
}

.page-faq .faq-handoff__mono {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--mint);
  overflow-wrap: anywhere;
}

.page-faq .faq-handoff__box .btn--amber {
  margin-top: 16px;
}

.page-faq .faq-handoff__meta {
  margin: 14px 0 0;
  font-size: 0.82rem;
  line-height: 1.8;
  color: var(--muted);
}

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

/* 媒体查询：移动端优先向上增强 */
@media (min-width: 640px) {
  .page-faq .faq-index {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 768px) {
  .page-faq .faq-check {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-faq .faq-check__step:nth-child(2) {
    border-top: 0;
    border-left: 2px solid var(--line-600);
  }
  .page-faq .faq-check__step:nth-child(3) {
    border-left: 0;
  }
  .page-faq .faq-check__step:nth-child(4) {
    border-left: 2px solid var(--line-600);
  }
  .page-faq .faq-seq__item {
    grid-template-columns: 64px minmax(0, 1fr);
    padding: 20px 24px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-index {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-faq .faq-selfcheck {
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: clamp(24px, 3vw, 36px);
  }
  .page-faq .faq-check {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-faq .faq-check__step {
    border-top: 0;
    border-left: 2px solid var(--line-600);
    padding: 24px 18px 22px;
  }
  .page-faq .faq-check__step:first-child {
    border-left: 0;
  }
  .page-faq .faq-check__step:nth-child(2),
  .page-faq .faq-check__step:nth-child(4) {
    border-left: 2px solid var(--line-600);
  }
  .page-faq .faq-handoff {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-shot {
    margin-top: 6px;
  }
  .page-faq .faq-item__q {
    padding: 20px 24px;
    font-size: 1.02rem;
  }
  .page-faq .faq-item__a {
    margin: 0 24px 22px 60px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__card,
  .page-faq .faq-item,
  .page-faq .faq-item__q,
  .page-faq .faq-item__sign {
    transition: none;
  }
  .page-faq .faq-index__card:hover,
  .page-faq .faq-index__card:focus-visible {
    transform: none;
    box-shadow: var(--shadow-hard);
  }
  .page-faq .faq-item[open] .faq-item__sign {
    transform: none;
  }
}