.page-faq {
  --kb-gap: clamp(18px, 2.6vw, 32px);
  --kb-sec-space: clamp(52px, 8vw, 96px);
  --kb-radius: 14px;
  --kb-radius-sm: 10px;
}

/* ---------- 首屏 ---------- */
.page-faq .kb-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(38px, 7vw, 88px) 0 clamp(30px, 5vw, 56px);
  isolation: isolate;
}

.page-faq .kb-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: -34%;
  right: -14%;
  width: min(720px, 88vw);
  height: min(720px, 88vw);
  background: conic-gradient(from 205deg,
      rgba(37, 224, 196, 0.22),
      rgba(108, 107, 255, 0.16) 34%,
      rgba(242, 179, 61, 0.10) 52%,
      transparent 74%);
  border-radius: 46% 54% 38% 62% / 52% 44% 56% 48%;
  filter: blur(4px);
  pointer-events: none;
}

.page-faq .kb-hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  left: -6%;
  bottom: -46%;
  width: min(520px, 70vw);
  height: min(520px, 70vw);
  background: radial-gradient(circle at 40% 40%, rgba(37, 224, 196, 0.14), transparent 68%);
  border-radius: 58% 42% 55% 45% / 46% 58% 42% 54%;
  pointer-events: none;
}

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

.page-faq .kb-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 5.6vw, 62px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--mist);
}

.page-faq .kb-hero__lead {
  margin: 20px 0 0;
  max-width: 58ch;
  font-size: 16.5px;
  line-height: 1.8;
  color: var(--slate);
}

.page-faq .kb-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(28px, 4.5vw, 46px) 0 0;
  padding: 0;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--kb-radius);
  overflow: hidden;
}

.page-faq .kb-stats__item {
  background: linear-gradient(160deg, rgba(17, 28, 47, 0.94), rgba(10, 17, 32, 0.86));
  padding: 16px 18px;
}

.page-faq .kb-stats dt {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--slate);
  font-family: var(--font-mono);
}

.page-faq .kb-stats dd {
  margin: 8px 0 0;
  font-size: 15px;
  color: var(--mist);
}

.page-faq .kb-stats .num {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--amber);
  margin-right: 4px;
}

/* ---------- 章节通用 ---------- */
.page-faq .kb-sec {
  padding: var(--kb-sec-space) 0 0;
  border-top: 1px solid var(--line);
  margin-top: var(--kb-sec-space);
}

.page-faq .kb-sec .section-head {
  max-width: 68ch;
}

.page-faq .kb-sec .section-note {
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
}

/* ---------- 01 ZB 索引 ---------- */
.page-faq .kb-index {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--kb-gap);
  margin-top: clamp(26px, 4vw, 42px);
}

.page-faq .kb-term {
  border: 1px solid var(--line);
  border-radius: var(--kb-radius-sm);
  background: rgba(17, 28, 47, 0.66);
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}

.page-faq .kb-term + .kb-term {
  margin-top: 10px;
}

.page-faq .kb-term:hover {
  border-color: rgba(37, 224, 196, 0.45);
}

.page-faq .kb-term[open] {
  border-color: rgba(37, 224, 196, 0.7);
  background: rgba(17, 28, 47, 0.95);
}

.page-faq .kb-term > summary {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 12px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
}

.page-faq .kb-term > summary::-webkit-details-marker {
  display: none;
}

.page-faq .kb-term__no {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--cyan);
  padding: 2px 7px;
  border: 1px solid rgba(37, 224, 196, 0.4);
  border-radius: 5px;
}

.page-faq .kb-term__name {
  flex: 1 1 140px;
  min-width: 0;
  font-size: 15.5px;
  color: var(--mist);
  line-height: 1.5;
}

.page-faq .kb-term > summary::after {
  content: "";
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  border-right: 1.5px solid var(--slate);
  border-bottom: 1.5px solid var(--slate);
  transform: rotate(45deg) translate(-1px, -1px);
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease);
}

.page-faq .kb-term[open] > summary::after {
  transform: rotate(-135deg) translate(-1px, -1px);
  border-color: var(--cyan);
}

.page-faq .kb-term__body {
  padding: 0 16px 16px;
  border-top: 1px dashed var(--line);
}

.page-faq .kb-term__body p {
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--slate);
}

.page-faq .kb-index__side {
  display: flex;
  flex-direction: column;
  gap: var(--kb-gap);
}

.page-faq .kb-note-card {
  padding: 18px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--amber);
  border-radius: var(--kb-radius-sm);
  background: rgba(10, 17, 32, 0.7);
}

.page-faq .kb-note-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  color: var(--mist);
}

.page-faq .kb-note-list {
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .kb-note-list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--slate);
}

.page-faq .kb-note-list li + li {
  margin-top: 8px;
}

.page-faq .kb-note-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 1px;
  background: var(--cyan);
}

.page-faq .kb-note-card__foot {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--slate);
}

/* ---------- 02 FA 场景 ---------- */
.page-faq .kb-fa {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--kb-gap);
  margin-top: clamp(24px, 3.6vw, 40px);
}

.page-faq .kb-scene {
  position: relative;
  padding: 22px 20px 20px;
  border: 1px solid var(--line);
  border-radius: var(--kb-radius);
  background: linear-gradient(165deg, rgba(17, 28, 47, 0.9), rgba(10, 17, 32, 0.72));
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease);
}

.page-faq .kb-scene::after {
  content: "";
  position: absolute;
  left: 20px;
  right: 20px;
  top: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), rgba(108, 107, 255, 0.5) 55%, transparent);
  border-radius: 2px;
}

.page-faq .kb-scene:hover {
  border-color: rgba(37, 224, 196, 0.5);
  transform: translateY(-3px);
}

.page-faq .kb-scene__no {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-faq .kb-scene h3 {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--mist);
}

.page-faq .kb-scene__env {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--amber);
}

.page-faq .kb-scene__txt {
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--slate);
}

/* ---------- 03 五环节流程 ---------- */
.page-faq .kb-flow {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin: clamp(24px, 3.6vw, 40px) 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .kb-flow__step {
  position: relative;
  padding: 20px 18px 18px;
  border: 1px solid var(--line);
  border-radius: var(--kb-radius-sm);
  background: linear-gradient(180deg, rgba(17, 28, 47, 0.9), rgba(10, 17, 32, 0.7));
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease);
}

.page-faq .kb-flow__step:hover,
.page-faq .kb-flow__step:focus-within {
  border-color: rgba(37, 224, 196, 0.55);
  transform: translateY(-3px);
}

.page-faq .kb-flow__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 1px solid rgba(37, 224, 196, 0.55);
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--cyan);
}

.page-faq .kb-flow__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--mist);
}

.page-faq .kb-flow__txt {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate);
}

.page-faq .kb-flow__eta {
  margin: 12px 0 0;
  padding-top: 10px;
  border-top: 1px dashed var(--line);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.03em;
  color: var(--amber);
}

.page-faq .kb-flow__arrow {
  display: none;
}

/* ---------- 04 质保范围 ---------- */
.page-faq .kb-cover {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--kb-gap);
  margin-top: clamp(24px, 3.6vw, 40px);
}

.page-faq .kb-cover__table {
  min-width: 0;
}

.page-faq .kb-cover .data-table {
  font-size: 14.5px;
}

.page-faq .kb-cover .data-table th {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--slate);
  white-space: nowrap;
}

.page-faq .kb-cover .data-table td {
  line-height: 1.7;
  vertical-align: top;
}

.page-faq .kb-verdict {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
  font-size: 13.5px;
}

.page-faq .kb-verdict svg {
  width: 15px;
  height: 15px;
  flex: 0 0 auto;
}

.page-faq .kb-verdict--yes {
  color: var(--cyan);
}

.page-faq .kb-verdict--no {
  color: var(--coral);
}

.page-faq .kb-verdict--mid {
  color: var(--amber);
}

.page-faq .kb-mid-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--amber);
}

.page-faq .kb-cover__figure {
  align-self: start;
}

/* ---------- 05 批次核对 ---------- */
.page-faq .kb-batch {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--kb-gap);
  margin-top: clamp(24px, 3.6vw, 40px);
}

.page-faq .kb-batch__code {
  padding: 24px 22px;
  border: 1px solid var(--line);
  border-radius: var(--kb-radius);
  background:
    repeating-linear-gradient(135deg, rgba(36, 52, 76, 0.22) 0 1px, transparent 1px 14px),
    linear-gradient(165deg, rgba(17, 28, 47, 0.94), rgba(10, 17, 32, 0.8));
}

.page-faq .kb-batch__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--slate);
}

.page-faq .kb-batchcode {
  display: flex;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0 0;
}

.page-faq .kb-batchcode__seg {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  min-width: 66px;
  padding: 12px 10px 10px;
  border: 1px solid rgba(37, 224, 196, 0.45);
  border-radius: var(--kb-radius-sm);
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--cyan);
  background: rgba(10, 17, 32, 0.6);
}

.page-faq .kb-batchcode__seg i {
  font-style: normal;
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--slate);
}

.page-faq .kb-batchcode__dash {
  padding-top: 16px;
  font-family: var(--font-mono);
  font-size: 22px;
  color: var(--slate);
}

.page-faq .kb-batch__hint {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate);
}

.page-faq .kb-steps {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .kb-steps__item {
  display: flex;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .kb-steps__item:first-child {
  padding-top: 4px;
}

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

.page-faq .kb-steps__no {
  flex: 0 0 auto;
  width: 30px;
  height: 30px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--amber);
  background: rgba(17, 28, 47, 0.8);
}

.page-faq .kb-steps__item h3 {
  margin: 4px 0 0;
  font-family: var(--font-display);
  font-size: 15.5px;
  font-weight: 700;
  color: var(--mist);
}

.page-faq .kb-steps__item p {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate);
}

.page-faq .kb-batch__more {
  margin: clamp(24px, 3.4vw, 34px) 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--cyan);
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--slate);
}

/* ---------- 06 问答 ---------- */
.page-faq .kb-qa {
  margin-top: clamp(22px, 3.4vw, 38px);
  border-top: 1px solid var(--line);
}

.page-faq .kb-qa__item {
  border-bottom: 1px solid var(--line);
}

.page-faq .kb-qa__item > summary {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--mist);
  transition: color 0.25s var(--ease);
}

.page-faq .kb-qa__item > summary::-webkit-details-marker {
  display: none;
}

.page-faq .kb-qa__item > summary::before {
  content: "";
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  margin-top: 8px;
  border-right: 1.5px solid var(--slate);
  border-bottom: 1.5px solid var(--slate);
  transform: rotate(45deg);
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease);
}

.page-faq .kb-qa__item[open] > summary::before {
  transform: rotate(-135deg);
  border-color: var(--cyan);
}

.page-faq .kb-qa__item > summary:hover {
  color: var(--cyan);
}

.page-faq .kb-qa__body {
  padding: 0 0 20px 23px;
  max-width: 72ch;
}

.page-faq .kb-qa__body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--slate);
}

.page-faq .kb-foot-note {
  margin: clamp(24px, 3.4vw, 34px) 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--slate);
}

/* ---------- 行动区 ---------- */
.page-faq .kb-cta {
  margin-top: clamp(56px, 9vw, 104px);
  border-top: 1px solid rgba(242, 179, 61, 0.4);
  border-bottom: 1px solid rgba(37, 224, 196, 0.22);
  background: linear-gradient(100deg, rgba(242, 179, 61, 0.16), rgba(10, 17, 32, 0.35) 52%, rgba(37, 224, 196, 0.12));
}

.page-faq .kb-cta__inner {
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding: clamp(34px, 5.5vw, 58px) var(--gutter);
}

.page-faq .kb-cta__text h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(23px, 3.4vw, 34px);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.25;
  color: var(--mist);
}

.page-faq .kb-cta__text p {
  margin: 14px 0 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--slate);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .kb-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-faq .kb-index {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

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

  .page-faq .kb-cover {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-faq .kb-batch {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }

  .page-faq .kb-flow {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 26px;
  }

  .page-faq .kb-flow__step {
    padding: 20px 16px 18px;
  }

  .page-faq .kb-flow__arrow {
    display: block;
    position: absolute;
    right: -22px;
    top: 34px;
    width: 18px;
    height: 18px;
    color: rgba(37, 224, 196, 0.55);
  }

  .page-faq .kb-flow__step:last-child .kb-flow__arrow {
    display: none;
  }

  .page-faq .kb-cta__inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
  }

  .page-faq .kb-cta__actions {
    flex: 0 0 auto;
  }
}

@media (min-width: 1180px) {
  .page-faq .kb-flow__txt {
    font-size: 13.5px;
  }
}