.page-faq {
  --faq-rail: 15rem;
  --faq-cut: 26px;
  background: var(--ink-800);
  color: var(--paper);
  font-family: var(--font-sans);
  line-height: 1.75;
}

.page-faq p {
  margin: 0 0 1rem;
}

.page-faq [id] {
  scroll-margin-top: 5.5rem;
}

.page-faq .eyebrow {
  margin: 0 0 .8rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .45rem;
  margin: 0 0 1.4rem;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .06em;
  color: var(--slate);
}

.page-faq .breadcrumbs__link {
  color: var(--warm);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

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

.page-faq .breadcrumbs__current {
  color: var(--mist);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  padding: clamp(2.2rem, 6vw, 4.4rem) 0 clamp(2.4rem, 6vw, 4.6rem);
  background: linear-gradient(118deg, var(--ink-900) 0%, var(--ink-900) 56%, var(--ink-700) 56%, var(--ink-700) 100%);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image: repeating-linear-gradient(90deg, rgba(183, 176, 165, .07) 0 1px, transparent 1px 86px);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: -8%;
  right: -8%;
  top: 70%;
  height: 2px;
  z-index: -1;
  background: linear-gradient(90deg, transparent, var(--coral), var(--cyan), transparent);
  transform: rotate(-5deg);
  opacity: .6;
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(1.8rem, 4vw, 3rem);
}

.page-faq .faq-hero .display-title {
  margin: 0 0 1.1rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 5.4vw, 3.5rem);
  line-height: 1.14;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-faq .faq-hero .lede {
  margin: 0;
  max-width: 42rem;
  font-size: clamp(.95rem, 1.6vw, 1.06rem);
  color: var(--mist);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
  margin-top: 1.6rem;
}

.page-faq .faq-hero__actions .btn {
  text-decoration: none;
}

/* 记录示意卡 */

.page-faq .record-card {
  position: relative;
  padding: 1.4rem 1.5rem 1.5rem;
  background: linear-gradient(160deg, var(--ink-700), var(--ink-800) 72%);
  border: 1px solid var(--line-cyan);
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-cut), 100% 100%, 0 100%);
  box-shadow: var(--shadow-card);
}

.page-faq .record-card__kicker {
  margin: 0 0 .35rem;
  font-size: .72rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .record-card__title {
  margin: 0 0 1.1rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.5rem;
  line-height: 1.2;
  color: var(--paper);
}

.page-faq .record-card__rows {
  margin: 0 0 1rem;
  padding: 0;
  list-style: none;
  display: grid;
  gap: .1rem;
}

.page-faq .record-card__row {
  display: grid;
  gap: .1rem;
  padding: .6rem 0;
  border-bottom: 1px dashed var(--line);
}

.page-faq .record-card__key {
  font-size: .74rem;
  letter-spacing: .12em;
  color: var(--coral);
}

.page-faq .record-card__desc {
  font-size: .92rem;
  color: var(--mist);
}

.page-faq .record-card__note {
  margin: 0;
  font-size: .82rem;
  line-height: 1.7;
  color: var(--warm);
}

/* ---------- 主体骨架 ---------- */

.page-faq .faq-layout {
  display: grid;
  gap: clamp(1.6rem, 4vw, 3rem);
  padding-block: clamp(2.2rem, 6vw, 4.2rem) clamp(2.6rem, 7vw, 5rem);
}

.page-faq .faq-aside__sticky {
  display: grid;
  gap: 1.1rem;
}

.page-faq .faq-aside__label {
  margin: 0;
  font-size: .72rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-faq .faq-toc {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: .1rem;
}

.page-faq .faq-toc a {
  display: flex;
  align-items: baseline;
  gap: .6rem;
  padding: .5rem .8rem;
  border-left: 2px solid var(--line);
  color: var(--mist);
  font-size: .88rem;
  text-decoration: none;
  transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}

.page-faq .faq-toc a:hover,
.page-faq .faq-toc a:focus-visible {
  color: var(--cyan);
  border-left-color: var(--cyan);
  background: rgba(53, 224, 255, .07);
}

.page-faq .faq-toc a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .faq-toc__no {
  font-family: var(--font-mono);
  font-size: .7rem;
  color: var(--slate);
}

.page-faq .faq-aside__hint {
  padding: .9rem 1rem;
  border: 1px solid var(--line);
  border-left: 2px solid var(--coral);
  background: rgba(16, 42, 76, .55);
}

.page-faq .faq-aside__hint-label {
  margin: 0 0 .3rem;
  font-size: .7rem;
  letter-spacing: .14em;
  color: var(--coral);
}

.page-faq .faq-aside__hint-text {
  margin: 0 0 .5rem;
  font-size: .82rem;
  line-height: 1.65;
  color: var(--warm);
}

.page-faq .faq-aside__hint-link {
  font-size: .82rem;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 224, 255, .4);
}

.page-faq .faq-aside__hint-link:hover,
.page-faq .faq-aside__hint-link:focus-visible {
  border-bottom-color: var(--cyan);
}

/* ---------- 章节 ---------- */

.page-faq .faq-section {
  margin-bottom: clamp(2.4rem, 6vw, 4rem);
}

.page-faq .faq-section:last-of-type {
  margin-bottom: clamp(1.6rem, 4vw, 2.4rem);
}

.page-faq .faq-section__head {
  margin-bottom: 1.4rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-section__no {
  margin: 0 0 .5rem;
  font-size: .72rem;
  letter-spacing: .18em;
  color: var(--cyan);
}

.page-faq .faq-section .section-title {
  margin: 0 0 .6rem;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: clamp(1.28rem, 3.2vw, 1.85rem);
  line-height: 1.35;
  color: var(--paper);
}

.page-faq .faq-section__intro {
  margin: 0;
  max-width: 44rem;
  font-size: .95rem;
  color: var(--warm);
}

.page-faq .faq-section__tail {
  margin-top: 1.2rem;
  font-size: .93rem;
  color: var(--mist);
}

.page-faq .faq-inline-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 224, 255, .4);
  transition: border-color .2s var(--ease), color .2s var(--ease);
}

.page-faq .faq-inline-link:hover,
.page-faq .faq-inline-link:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

/* ---------- 图 ---------- */

.page-faq .faq-figure {
  margin: 0;
  border: 1px solid var(--line-cyan);
  background: var(--ink-900);
  overflow: hidden;
}

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

.page-faq .faq-figure--tall img {
  aspect-ratio: 10 / 14;
  object-fit: cover;
}

.page-faq .faq-figure--wide img {
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-faq .faq-figure figcaption {
  padding: .6rem .9rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .05em;
  color: var(--warm);
  border-top: 1px solid var(--line);
  background: rgba(10, 27, 51, .9);
}

/* ---------- 三步 ---------- */

.page-faq .faq-steps-wrap {
  display: grid;
  gap: 1.4rem;
}

.page-faq .faq-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: .9rem;
}

.page-faq .faq-step {
  padding: 1.1rem 1.2rem 1.2rem;
  background: linear-gradient(150deg, var(--ink-700), var(--ink-800));
  border-left: 2px solid var(--line-cyan);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
  transition: border-color .25s var(--ease), transform .25s var(--ease);
}

.page-faq .faq-step:hover,
.page-faq .faq-step:focus-within {
  border-left-color: var(--cyan);
  transform: translateX(4px);
}

.page-faq .faq-step__no {
  display: block;
  margin-bottom: .35rem;
  font-size: .72rem;
  letter-spacing: .14em;
  color: var(--coral);
}

.page-faq .faq-step__title {
  margin: 0 0 .5rem;
  font-family: var(--font-sans);
  font-size: 1.02rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--paper);
}

.page-faq .faq-step p {
  margin: 0 0 .7rem;
  font-size: .92rem;
  color: var(--mist);
}

.page-faq .faq-step .faq-inline-link {
  font-size: .86rem;
}

/* ---------- 记录章节 ---------- */

.page-faq .faq-record {
  display: grid;
  gap: 1.4rem;
}

.page-faq .faq-record__text p {
  font-size: .95rem;
  color: var(--mist);
}

.page-faq .faq-fields {
  margin: 0;
  display: grid;
  gap: .9rem;
}

.page-faq .faq-field {
  display: grid;
  gap: .2rem;
  padding: .8rem 1rem;
  border-left: 2px solid var(--line-cyan);
  background: rgba(16, 42, 76, .5);
}

.page-faq .faq-field dt {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .1em;
  color: var(--cyan);
}

.page-faq .faq-field dd {
  margin: 0;
  font-size: .93rem;
  color: var(--mist);
}

.page-faq .faq-fields__note {
  margin: 1.2rem 0 0;
  padding: .9rem 1rem;
  font-size: .9rem;
  color: var(--warm);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(7, 18, 37, .5);
}

/* ---------- 客户端 ---------- */

.page-faq .faq-platforms {
  margin: 0 0 1.2rem;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
}

.page-faq .faq-platforms li {
  padding: .38rem .85rem;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .06em;
  color: var(--mint);
  border: 1px solid rgba(110, 231, 200, .35);
  background: rgba(16, 42, 76, .7);
}

.page-faq .faq-check {
  margin: 1.2rem 0;
  padding: 1rem 1.1rem;
  background: linear-gradient(140deg, var(--ink-700), var(--ink-800));
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
}

.page-faq .faq-check__title {
  margin: 0 0 .6rem;
  font-size: .72rem;
  letter-spacing: .14em;
  color: var(--coral);
}

.page-faq .faq-check__list {
  margin: 0;
  padding-left: 1.1rem;
  display: grid;
  gap: .4rem;
  font-size: .9rem;
  color: var(--mist);
}

.page-faq .faq-check__list li::marker {
  color: var(--cyan);
}

/* ---------- 标签维度 ---------- */

.page-faq .faq-dims {
  display: grid;
  gap: .9rem;
}

.page-faq .faq-dim {
  padding: 1rem 1.1rem 1.1rem;
  border: 1px solid var(--line);
  border-top: 2px solid var(--cyan);
  background: rgba(10, 27, 51, .7);
}

.page-faq .faq-dim__title {
  margin: 0 0 .4rem;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 700;
  color: var(--paper);
}

.page-faq .faq-dim p {
  margin: 0;
  font-size: .9rem;
  color: var(--warm);
}

.page-faq .tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  margin: .7rem 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .tag {
  padding: .28rem .68rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--ink-900);
  background: var(--mist);
  border-radius: 2px;
}

/* ---------- 版本批次 ---------- */

.page-faq .faq-batch {
  margin: 0 0 1.2rem;
  padding: 0;
  list-style: none;
  display: grid;
  gap: .7rem;
}

.page-faq .faq-batch__item {
  display: grid;
  grid-template-columns: 1.9rem minmax(0, 1fr);
  align-items: start;
  gap: .7rem;
  padding: .7rem .9rem;
  background: rgba(16, 42, 76, .5);
  border-left: 1px solid var(--line-cyan);
}

.page-faq .faq-batch__no {
  display: grid;
  place-items: center;
  width: 1.9rem;
  height: 1.9rem;
  font-size: .78rem;
  color: var(--ink-900);
  background: var(--cyan);
  border-radius: 50%;
}

.page-faq .faq-batch__item p {
  margin: 0;
  font-size: .92rem;
  color: var(--mist);
}

/* ---------- 折叠问答 ---------- */

.page-faq .faq-list {
  display: grid;
  gap: .6rem;
}

.page-faq .faq-item {
  background: rgba(16, 42, 76, .5);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
  transition: border-color .2s var(--ease), background .2s var(--ease);
}

.page-faq .faq-item[open] {
  border-color: var(--cyan);
  background: rgba(16, 42, 76, .92);
}

.page-faq .faq-item > summary {
  position: relative;
  padding: .9rem 2.8rem .9rem 1rem;
  font-family: var(--font-sans);
  font-size: .95rem;
  font-weight: 600;
  line-height: 1.55;
  color: var(--paper);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item > summary::after {
  content: "+";
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--coral);
}

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

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -3px;
}

.page-faq .faq-item__body {
  padding: 0 1rem 1rem;
  font-size: .92rem;
  color: var(--mist);
}

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

/* ---------- 收束 ---------- */

.page-faq .faq-help-cta {
  padding: clamp(1.4rem, 4vw, 2.2rem);
  background: linear-gradient(120deg, var(--ink-900) 0%, var(--ink-700) 100%);
  border-left: 3px solid var(--coral);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%);
}

.page-faq .faq-help-cta__kicker {
  margin: 0 0 .5rem;
  font-size: .72rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--coral);
}

.page-faq .faq-help-cta__title {
  margin: 0 0 .7rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.25rem, 3vw, 1.7rem);
  line-height: 1.35;
  color: var(--paper);
}

.page-faq .faq-help-cta__text {
  margin: 0 0 1.2rem;
  max-width: 40rem;
  font-size: .92rem;
  color: var(--mist);
}

.page-faq .faq-help-cta .btn {
  text-decoration: none;
}

/* ---------- 响应式 ---------- */

@media (min-width: 48rem) {
  .page-faq .faq-steps-wrap {
    grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
    align-items: start;
  }

  .page-faq .faq-record {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: start;
  }

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

  .page-faq .faq-field {
    grid-template-columns: 8rem minmax(0, 1fr);
    gap: .9rem;
    align-items: baseline;
  }
}

@media (min-width: 64rem) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-aside__sticky {
    position: sticky;
    top: 6rem;
  }

  .page-faq .faq-record {
    grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
  }
}

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

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