.page-faq {
  background: var(--ink);
  color: var(--paper);
  padding-bottom: clamp(56px, 8vw, 100px);
  position: relative;
}

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

/* ============ 首屏 ============ */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(28px, 4.6vw, 56px) 0 clamp(32px, 5vw, 56px);
  border-top: 1px solid var(--line);
  margin-top: clamp(16px, 2vw, 24px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  left: 0;
  top: -1px;
  width: 72px;
  height: 2px;
  background: var(--lime);
}

.page-faq .faq-hero .eyebrow {
  color: var(--lime);
  margin: 0 0 14px;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-head);
  font-weight: 200;
  font-size: clamp(38px, 6.4vw, 76px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--paper);
  margin: 0 0 24px;
  max-width: 16em;
}

.page-faq .faq-hero__lead {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.8;
  color: var(--paper);
  opacity: 0.86;
  max-width: 62ch;
  margin: 0 0 32px;
}

.page-faq .faq-hero__meta {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 14px 44px;
  border-top: 1px solid var(--line-soft);
  padding-top: 20px;
}

.page-faq .faq-hero__meta li {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-faq .faq-hero__meta .mono {
  font-size: 28px;
  font-weight: 500;
  color: var(--lime);
  letter-spacing: -0.02em;
}

.page-faq .faq-hero__unit {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gray);
}

/* ============ 通用章节 ============ */
.page-faq .faq-sec {
  padding: clamp(48px, 7vw, 88px) 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-sec:last-of-type {
  border-bottom: none;
}

.page-faq .section__head {
  display: flex;
  gap: clamp(16px, 3vw, 28px);
  align-items: flex-start;
  margin-bottom: clamp(18px, 3vw, 28px);
}

.page-faq .section__num {
  font-family: var(--font-mono);
  font-size: clamp(30px, 4.6vw, 48px);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--lime);
  flex: none;
}

.page-faq .section__title {
  font-family: var(--font-head);
  font-weight: 300;
  font-size: clamp(26px, 3.4vw, 40px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--paper);
  margin: 6px 0 0;
  max-width: 20em;
}

.page-faq .section__head .eyebrow {
  color: var(--gray);
  margin: 0 0 6px;
}

.page-faq .prose {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.8;
  color: var(--paper);
  opacity: 0.82;
  max-width: 62ch;
  margin: 0 0 28px;
}

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

/* ============ 01 分类导航 ============ */
.page-faq .cat-list {
  list-style: none;
  padding: 0;
  margin: 0;
  border-top: 1px solid var(--line);
}

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

.page-faq .cat__link {
  display: grid;
  grid-template-columns: 46px 1fr auto;
  column-gap: clamp(12px, 2vw, 24px);
  row-gap: 6px;
  align-items: baseline;
  padding: 20px 12px 20px 4px;
  text-decoration: none;
  color: inherit;
  position: relative;
  transition: background 0.22s var(--ease), padding-left 0.22s var(--ease);
}

.page-faq .cat__link::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--lime);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.28s var(--ease);
}

.page-faq .cat__link:hover,
.page-faq .cat__link:focus-visible {
  background: rgba(198, 255, 61, 0.07);
  padding-left: 18px;
  outline: none;
}

.page-faq .cat__link:hover::before,
.page-faq .cat__link:focus-visible::before {
  transform: scaleY(1);
}

.page-faq .cat__link:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
}

.page-faq .cat__code {
  grid-row: 1 / 3;
  align-self: center;
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--lime);
}

.page-faq .cat__name {
  font-family: var(--font-head);
  font-weight: 400;
  font-size: 22px;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .cat__count {
  justify-self: end;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--orange);
  white-space: nowrap;
}

.page-faq .cat__desc {
  grid-column: 2 / 4;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.65;
  color: var(--gray);
  max-width: 60ch;
}

/* ============ 双栏答疑布局 ============ */
.page-faq .faq-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 5vw, 56px);
}

.page-faq .faq-grid__main {
  min-width: 0;
}

.page-faq .faq-grid__side {
  min-width: 0;
}

@media (min-width: 880px) {
  .page-faq .faq-grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(260px, 1fr);
    align-items: start;
  }

  .page-faq .faq-grid--rev {
    grid-template-columns: minmax(260px, 1fr) minmax(0, 1.55fr);
  }

  .page-faq .faq-grid--rev .faq-grid__main {
    order: 2;
  }

  .page-faq .faq-grid--rev .faq-grid__side {
    order: 1;
  }
}

/* ============ 图片 ============ */
.page-faq .figure {
  margin: 0;
}

.page-faq .figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  background: var(--ink-mid);
  border: 1px solid var(--line);
}

.page-faq .figure--diagram img {
  aspect-ratio: 10 / 7;
}

.page-faq .figure figcaption,
.page-faq .figure__cap {
  margin-top: 12px;
  font-family: var(--font-body);
  font-size: 13px;
  line-height: 1.65;
  color: var(--gray);
}

/* ============ 02 自查步骤 ============ */
.page-faq .steps {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
}

.page-faq .step {
  display: grid;
  grid-template-columns: 46px 1fr;
  column-gap: 18px;
  padding: 14px 0;
  position: relative;
}

.page-faq .step:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 22px;
  top: 64px;
  bottom: -14px;
  width: 1px;
  background: linear-gradient(180deg, rgba(198, 255, 61, 0.55), rgba(198, 255, 61, 0.06));
}

.page-faq .step__num {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border: 1px solid var(--lime);
  border-radius: 50%;
  background: var(--ink);
  color: var(--lime);
  font-size: 14px;
  letter-spacing: 0.02em;
  position: relative;
  z-index: 1;
}

.page-faq .step__title {
  font-family: var(--font-head);
  font-weight: 400;
  font-size: 20px;
  letter-spacing: -0.01em;
  color: var(--paper);
  margin: 10px 0 6px;
}

.page-faq .step__body p {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.75;
  color: var(--gray);
  margin: 0;
  max-width: 58ch;
}

/* ============ 03 版本清单 ============ */
.page-faq .checklist {
  list-style: none;
  padding: 0;
  margin: 0 0 36px;
  border-top: 1px solid var(--line);
}

.page-faq .checklist__item {
  display: grid;
  grid-template-columns: 28px 1fr;
  column-gap: clamp(14px, 2vw, 22px);
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .checklist__box {
  width: 18px;
  height: 18px;
  margin-top: 5px;
  background: var(--orange);
  position: relative;
  flex: none;
}

.page-faq .checklist__box::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 2px;
  width: 5px;
  height: 10px;
  border-right: 2px solid var(--ink-deep);
  border-bottom: 2px solid var(--ink-deep);
  transform: rotate(42deg);
}

.page-faq .checklist__title {
  font-family: var(--font-head);
  font-weight: 400;
  font-size: 20px;
  letter-spacing: -0.01em;
  color: var(--paper);
  margin: 0 0 6px;
}

.page-faq .checklist__body p {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.75;
  color: var(--gray);
  margin: 0;
  max-width: 60ch;
}

.page-faq .misread {
  border-left: 2px solid var(--orange);
  background: rgba(255, 122, 61, 0.07);
  padding: 18px clamp(18px, 3vw, 26px);
}

.page-faq .misread .eyebrow {
  color: var(--orange);
  margin: 0;
}

.page-faq .misread ul {
  list-style: none;
  padding: 0;
  margin: 10px 0 0;
}

.page-faq .misread li {
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.7;
  color: var(--paper);
  opacity: 0.84;
  padding: 7px 0;
}

.page-faq .misread li .mono {
  color: var(--orange);
  font-size: 13px;
  letter-spacing: 0.02em;
  margin-right: 12px;
  white-space: nowrap;
}

/* ============ 折叠问答 ============ */
.page-faq .qa {
  border-bottom: 1px solid var(--line);
}

.page-faq .qa:first-of-type {
  border-top: 1px solid var(--line);
}

.page-faq .qa__q {
  list-style: none;
  cursor: pointer;
  padding: 18px 40px 18px 4px;
  position: relative;
  font-family: var(--font-head);
  font-weight: 400;
  font-size: 19px;
  line-height: 1.4;
  letter-spacing: -0.01em;
  color: var(--paper);
  transition: color 0.2s var(--ease);
}

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

.page-faq .qa__q::after {
  content: "";
  position: absolute;
  right: 10px;
  top: 50%;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--lime);
  border-bottom: 2px solid var(--lime);
  transform: translateY(-70%) rotate(45deg);
  transition: transform 0.26s var(--ease);
}

.page-faq .qa[open] .qa__q::after {
  transform: translateY(-30%) rotate(-135deg);
}

.page-faq .qa__q:hover,
.page-faq .qa__q:focus-visible {
  color: var(--lime);
  outline: none;
}

.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}

.page-faq .qa__a {
  padding: 0 40px 20px 4px;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.78;
  color: var(--gray);
}

.page-faq .qa__a p {
  margin: 0 0 10px;
  max-width: 58ch;
}

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

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

.page-faq .qa__a ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.page-faq .qa__a li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 8px;
}

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

.page-faq .qa__a li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 9px;
  height: 1px;
  background: var(--orange);
}

/* ============ 05 账户与端点 ============ */
.page-faq .acct-grid {
  display: grid;
  grid-template-columns: 1fr;
  margin: 0 0 36px;
  border-top: 1px solid var(--line);
}

.page-faq .acct {
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .acct__label {
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--orange);
  margin: 0 0 12px;
}

.page-faq .acct__title {
  font-family: var(--font-head);
  font-weight: 400;
  font-size: 21px;
  letter-spacing: -0.01em;
  color: var(--paper);
  margin: 0 0 10px;
}

.page-faq .acct__desc {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.75;
  color: var(--gray);
  margin: 0;
  max-width: 42ch;
}

@media (min-width: 780px) {
  .page-faq .acct-grid {
    grid-template-columns: repeat(3, 1fr);
    border-bottom: 1px solid var(--line);
  }

  .page-faq .acct {
    border-bottom: none;
    padding: 28px 28px 28px 0;
  }

  .page-faq .acct + .acct {
    border-left: 1px solid var(--line-soft);
    padding-left: 28px;
  }
}

/* ============ 06 术语小词典 ============ */
.page-faq .glossary {
  margin: 0 0 48px;
  border-top: 1px solid var(--line);
}

.page-faq .glossary__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

@media (min-width: 640px) {
  .page-faq .glossary__row {
    grid-template-columns: 180px minmax(0, 1fr);
    column-gap: 28px;
    align-items: baseline;
  }
}

.page-faq .glossary__term {
  font-size: 16px;
  color: var(--lime);
  letter-spacing: 0.01em;
  margin: 0;
}

.page-faq .glossary__desc {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.75;
  color: var(--gray);
  margin: 0;
  max-width: 62ch;
}

/* ============ 订阅卡片 ============ */
.page-faq .subscribe-card {
  border: 1px solid var(--line-strong);
  background: var(--ink-deep);
  padding: clamp(24px, 4vw, 40px);
  max-width: 720px;
  position: relative;
}

.page-faq .subscribe-card::before {
  content: "";
  position: absolute;
  left: -1px;
  top: -1px;
  width: 64px;
  height: 3px;
  background: var(--lime);
}

.page-faq .subscribe-card .eyebrow {
  color: var(--lime);
  margin: 0;
}

.page-faq .subscribe-card h3 {
  font-family: var(--font-head);
  font-weight: 300;
  font-size: clamp(22px, 2.8vw, 32px);
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--paper);
  margin: 10px 0 14px;
}

.page-faq .subscribe-card p:not(.eyebrow) {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.78;
  color: var(--gray);
  margin: 0 0 24px;
  max-width: 58ch;
}

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

/* ============ 滚动显现 ============ */
.page-faq [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
  transition-delay: var(--reveal-delay, 0ms);
}

.page-faq [data-reveal].is-in {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .page-faq [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .page-faq .cat__link,
  .page-faq .qa__q,
  .page-faq .cat__link::before,
  .page-faq .qa__q::after {
    transition: none;
  }
}

/* ============ 窄屏兜底 ============ */
@media (max-width: 480px) {
  .page-faq .faq-hero h1 {
    font-size: clamp(30px, 9vw, 40px);
  }

  .page-faq .cat__link {
    grid-template-columns: 34px 1fr auto;
    padding-right: 8px;
  }

  .page-faq .cat__desc {
    grid-column: 2 / 4;
  }

  .page-faq .step {
    grid-template-columns: 38px 1fr;
    column-gap: 14px;
  }

  .page-faq .step__num {
    width: 38px;
    height: 38px;
    font-size: 13px;
  }

  .page-faq .step:not(:last-child)::after {
    left: 18px;
    top: 54px;
  }

  .page-faq .qa__q {
    font-size: 17px;
    padding-right: 34px;
  }

  .page-faq .qa__a {
    padding-right: 8px;
  }
}
<<<END>>>

.page-faq {
  --reveal-delay: 0.3s;
}