.page-faq {
  --faq-cut: 18px;
  --faq-track: 2px;
  background: var(--ink);
  color: var(--paper);
  overflow-x: clip;
}

/* ---------- HERO ---------- */
.page-faq .faq-hero {
  position: relative;
  padding-top: clamp(36px, 7vw, 84px);
  padding-bottom: clamp(30px, 5vw, 56px);
  isolation: isolate;
}
.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(120% 85% at 90% -10%, rgba(182, 255, 60, 0.14) 0%, transparent 58%),
    repeating-linear-gradient(58deg, rgba(199, 207, 216, 0.085) 0 1px, transparent 1px 28px);
  -webkit-mask-image: linear-gradient(#000 0%, #000 58%, transparent 100%);
  mask-image: linear-gradient(#000 0%, #000 58%, transparent 100%);
}
.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(22px, 4vw, 38px);
  margin-top: clamp(20px, 3vw, 34px);
}
.page-faq .faq-hero__title {
  font-family: var(--font-display);
  font-size: clamp(31px, 8vw, 66px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  margin: 14px 0 0;
  max-width: 15em;
  text-wrap: balance;
}
.page-faq .faq-hero .lede {
  margin: 18px 0 0;
  max-width: 38em;
  color: var(--slate);
  font-size: 16px;
  line-height: 1.85;
}

/* 快跳索引 */
.page-faq .faq-jump__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line-strong);
}
.page-faq .faq-jump__item {
  border-bottom: 1px solid var(--line);
}
.page-faq .faq-jump__item a {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 13px 2px;
  color: var(--silver);
  text-decoration: none;
  font-size: 14.5px;
  line-height: 1.55;
  transition: color var(--dur) var(--ease), padding-inline-start var(--dur) var(--ease);
}
.page-faq .faq-jump__item a::after {
  content: "↓";
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--slate);
  transition: color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.page-faq .faq-jump__item a:hover,
.page-faq .faq-jump__item a:focus-visible {
  color: var(--lime);
  padding-inline-start: 12px;
}
.page-faq .faq-jump__item a:hover::after,
.page-faq .faq-jump__item a:focus-visible::after {
  color: var(--lime);
  transform: translateY(3px);
}

/* ---------- 通用标题 ---------- */
.page-faq h2 {
  font-family: var(--font-display);
  font-size: clamp(23px, 4.4vw, 38px);
  line-height: 1.14;
  letter-spacing: -0.015em;
  margin: 12px 0 0;
  text-wrap: balance;
}
.page-faq h3 {
  margin: 0;
}

.page-faq .faq-note {
  margin: 18px 0 0;
  color: var(--slate);
  font-size: 14px;
  line-height: 1.75;
}
.page-faq .faq-link {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(182, 255, 60, 0.42);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.page-faq .faq-link:hover,
.page-faq .faq-link:focus-visible {
  border-bottom-color: var(--lime);
}
.page-faq .faq-figcap {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--slate);
}

/* ---------- 3 步上手 ---------- */
.page-faq .faq-block {
  padding-top: clamp(34px, 6vw, 62px);
  padding-bottom: clamp(34px, 6vw, 62px);
}
.page-faq .faq-steps {
  display: grid;
  gap: clamp(26px, 4vw, 46px);
}
.page-faq .faq-steps__list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  counter-reset: faqstep;
  border-top: 1px solid var(--line);
}
.page-faq .faq-step {
  position: relative;
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}
.page-faq .faq-step::before {
  counter-increment: faqstep;
  content: "0" counter(faqstep);
  display: grid;
  place-items: center;
  align-self: start;
  width: 34px;
  height: 34px;
  margin-top: 2px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--carbon);
  background: var(--lime);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 9px), calc(100% - 9px) 100%, 0 100%);
}
.page-faq .faq-step__title {
  font-family: var(--font-display);
  font-size: 17.5px;
  line-height: 1.38;
  color: var(--paper);
  margin-bottom: 7px;
}
.page-faq .faq-step__desc {
  margin: 0;
  color: var(--slate);
  font-size: 14.5px;
  line-height: 1.8;
  max-width: 40em;
}
.page-faq .faq-steps__figure {
  margin: 0;
  align-self: start;
}
.page-faq .faq-steps__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  background: var(--steel);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-group {
  border-top: 1px solid var(--line);
}
.page-faq .faq-group__grid {
  display: grid;
  gap: 24px;
}
.page-faq .faq-group__note {
  margin: 14px 0 0;
  color: var(--slate);
  font-size: 14.5px;
  line-height: 1.8;
}

/* 折角测量尺 */
.page-faq .faq-group__aside .index-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.page-faq .faq-shot {
  margin: 0 0 24px;
}
.page-faq .faq-shot img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  background: var(--steel);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}

/* 折叠问答 */
.page-faq .faq-item {
  border-top: 1px solid var(--line);
}
.page-faq .faq-item:last-of-type {
  border-bottom: 1px solid var(--line);
}
.page-faq .faq-item > summary {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr) 20px;
  gap: 14px;
  align-items: start;
  padding: 18px 0;
  cursor: pointer;
  list-style: none;
  color: var(--paper);
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.62;
  transition: color var(--dur) var(--ease);
}
.page-faq .faq-item > summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item > summary:hover {
  color: var(--lime);
}
.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}
.page-faq .faq-qno {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--lime);
  padding-top: 4px;
}
.page-faq .faq-mark {
  position: relative;
  width: 16px;
  height: 16px;
  margin-top: 6px;
  justify-self: end;
}
.page-faq .faq-mark::before,
.page-faq .faq-mark::after {
  content: "";
  position: absolute;
  background: var(--silver);
  transition: transform var(--dur) var(--ease), background-color var(--dur) var(--ease);
}
.page-faq .faq-mark::before {
  left: 0;
  right: 0;
  top: 7px;
  height: 2px;
}
.page-faq .faq-mark::after {
  left: 7px;
  top: 0;
  width: 2px;
  height: 16px;
}
.page-faq .faq-item[open] .faq-mark::after {
  transform: scaleY(0);
}
.page-faq .faq-item[open] .faq-mark::before {
  background: var(--lime);
}
.page-faq .faq-a {
  padding: 2px 24px 22px 60px;
  color: var(--slate);
  font-size: 14.5px;
  line-height: 1.85;
}
.page-faq .faq-a p {
  margin: 0;
  max-width: 46em;
}
.page-faq .faq-a ol {
  margin: 0;
  padding-inline-start: 1.3em;
  display: grid;
  gap: 8px;
  max-width: 46em;
}
.page-faq .faq-a li {
  padding-inline-start: 4px;
}
.page-faq .faq-a li::marker {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--teal);
}

/* ---------- 联系客服 ---------- */
.page-faq .faq-reach__grid {
  display: grid;
  gap: 26px;
}
.page-faq .faq-reach__desc {
  margin: 16px 0 0;
  color: var(--slate);
  font-size: 15px;
  line-height: 1.85;
  max-width: 34em;
}
.page-faq .faq-card {
  background: var(--panel);
  border-top: 2px solid var(--lime);
  padding: 6px 22px 20px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--faq-cut)), calc(100% - var(--faq-cut)) 100%, 0 100%);
}
.page-faq .faq-card__row {
  display: grid;
  gap: 5px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
}
.page-faq .faq-card__row:last-child {
  border-bottom: 0;
}
.page-faq .faq-card__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--slate);
}
.page-faq .faq-card__val {
  color: var(--paper);
  font-size: 15.5px;
  line-height: 1.6;
  word-break: break-word;
}
.page-faq .faq-card__val--mono {
  font-family: var(--font-mono);
  font-size: 16px;
  letter-spacing: 0.02em;
  color: var(--lime);
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-faq .faq-item > summary {
    font-size: 16px;
  }
}

@media (min-width: 880px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 52px;
    align-items: end;
  }
  .page-faq .faq-steps {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
  }
  .page-faq .faq-reach__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    gap: 50px;
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-group__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: 52px;
    align-items: start;
  }
  .page-faq .faq-group--flip .faq-group__grid {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
  }
  .page-faq .faq-group--flip .faq-group__aside {
    order: 2;
  }
}

@media (max-width: 560px) {
  .page-faq .faq-item > summary {
    grid-template-columns: 34px minmax(0, 1fr) 18px;
    gap: 10px;
    font-size: 15px;
    padding: 16px 0;
  }
  .page-faq .faq-a {
    padding: 2px 6px 20px 44px;
  }
  .page-faq .faq-step {
    grid-template-columns: 32px minmax(0, 1fr);
    gap: 12px;
  }
  .page-faq .faq-step::before {
    width: 30px;
    height: 30px;
    font-size: 11.5px;
  }
  .page-faq .faq-card {
    padding: 6px 16px 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-jump__item a,
  .page-faq .faq-jump__item a::after,
  .page-faq .faq-item > summary,
  .page-faq .faq-mark::before,
  .page-faq .faq-mark::after,
  .page-faq .faq-link {
    transition-duration: 1ms;
  }
}