/* ===== 使用指南 /guide/ ===== */

.page-faq {
  --faq-index-w: 236px;
  --faq-index-top: 108px;
}

/* ---------- 版面骨架 ---------- */

.page-faq .guide-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  margin-top: 24px;
  align-items: start;
}

.page-faq .guide-body {
  min-width: 0;
}

@media (min-width: 1000px) {
  .page-faq .guide-layout {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: 56px;
    margin-top: 40px;
  }
}

/* ---------- 左侧跟随索引 ---------- */

.page-faq .guide-index {
  border-top: 3px solid var(--indigo);
  background: var(--warm);
  padding: 18px 0 14px;
}

.page-faq .guide-index__label {
  margin: 0 0 10px;
  padding: 0 18px;
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--grey);
}

.page-faq .guide-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .guide-index__list a {
  display: block;
  padding: 9px 18px;
  border-left: 3px solid transparent;
  color: var(--ink);
  font-size: .9375rem;
  line-height: 1.5;
  text-decoration: none;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .guide-index__list a:hover {
  background: rgba(31, 78, 121, .07);
  border-left-color: var(--line);
}

.page-faq .guide-index__list a.is-current {
  border-left-color: var(--pom);
  background: rgba(31, 78, 121, .09);
  color: var(--indigo-deep);
  font-weight: 700;
}

@media (min-width: 1000px) {
  .page-faq .guide-index {
    position: sticky;
    top: var(--faq-index-top);
  }
}

/* ---------- 首屏 ---------- */

.page-faq .guide-hero {
  padding-bottom: 36px;
  border-bottom: 1px solid var(--line);
}

.page-faq .guide-hero__kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--grey);
}

.page-faq .guide-hero h1 {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.85rem, 3.4vw, 2.9rem);
  line-height: 1.18;
  letter-spacing: -.02em;
  color: var(--ink);
  max-width: 22ch;
}

.page-faq .guide-hero__lede {
  margin: 0 0 26px;
  max-width: 62ch;
  font-size: var(--fs-body);
  line-height: 1.85;
  color: var(--ink);
}

.page-faq .guide-hero__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 章节通用 ---------- */

.page-faq .guide-section {
  padding-top: 64px;
  scroll-margin-top: 104px;
}

.page-faq .guide-section .chapter {
  margin-bottom: 18px;
}

.page-faq .guide-section__intro {
  margin: 0 0 28px;
  max-width: 62ch;
  font-size: var(--fs-body);
  line-height: 1.85;
  color: var(--ink);
}

/* ---------- 三步开始 ---------- */

.page-faq .step-list {
  list-style: none;
  margin: 0 0 32px;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-faq .step {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 18px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}

@media (min-width: 720px) {
  .page-faq .step {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 32px;
    padding: 32px 0;
  }
}

.page-faq .step__no {
  font-family: var(--font-mono);
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -.04em;
  color: var(--indigo);
  font-variant-numeric: tabular-nums;
}

@media (min-width: 720px) {
  .page-faq .step__no {
    font-size: 2.6rem;
  }
}

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

.page-faq .step__title {
  margin: 0 0 10px;
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 1.25rem;
  line-height: 1.45;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-faq .step__body p {
  margin: 0 0 12px;
  max-width: 60ch;
  font-size: var(--fs-body);
  line-height: 1.85;
  color: var(--ink);
}

.page-faq .step__link {
  display: inline-block;
  color: var(--indigo);
  font-size: .9375rem;
  line-height: 1.6;
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 2px;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .step__link:hover {
  color: var(--indigo-deep);
  border-bottom-color: var(--pom);
}

/* ---------- 配图 ---------- */

.page-faq .figure {
  margin: 0;
}

.page-faq .figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  background: var(--warm);
}

.page-faq .figure__caption {
  margin-top: 10px;
  font-size: var(--fs-small);
  line-height: 1.7;
  color: var(--grey);
}

.page-faq .step-list + .figure {
  margin-top: 4px;
}

/* ---------- 读懂分类标签 ---------- */

.page-faq .tag-explain {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
  margin-bottom: 34px;
}

@media (min-width: 820px) {
  .page-faq .tag-explain {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 32px;
    border-top: 0;
  }
}

.page-faq .tag-explain__item {
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

@media (min-width: 820px) {
  .page-faq .tag-explain__item {
    padding: 0 0 0 20px;
    border-bottom: 0;
    border-left: 3px solid var(--indigo);
  }
}

.page-faq .tag-explain__title {
  margin: 0 0 8px;
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 1.0625rem;
  color: var(--ink);
}

.page-faq .tag-explain__item p {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--ink);
}

.page-faq .color-legend {
  background: var(--warm);
  padding: 26px 22px;
  border-left: 3px solid var(--sand);
}

.page-faq .color-legend__lead {
  margin: 0 0 16px;
  font-size: .9375rem;
  line-height: 1.7;
  color: var(--ink);
}

.page-faq .color-legend__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .color-legend__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  padding: 9px 0;
  border-bottom: 1px dashed var(--line);
}

.page-faq .color-legend__row:last-child {
  border-bottom: 0;
}

.page-faq .color-legend__desc {
  font-size: .9375rem;
  line-height: 1.7;
  color: var(--grey);
  min-width: 0;
  flex: 1 1 220px;
}

/* ---------- 确认版本时效 ---------- */

.page-faq .version-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  margin-bottom: 36px;
}

@media (min-width: 860px) {
  .page-faq .version-grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }
}

.page-faq .version-grid__text p {
  margin: 0 0 16px;
  max-width: 60ch;
  font-size: var(--fs-body);
  line-height: 1.85;
  color: var(--ink);
}

.page-faq .version-grid__text .step__link {
  margin-top: 4px;
}

.page-faq .anchor-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .data-point {
  background: var(--paper);
  padding: 24px 20px;
}

.page-faq .data-point__value {
  display: block;
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -.03em;
  color: var(--pom);
  font-variant-numeric: tabular-nums;
}

.page-faq .data-point__label {
  display: block;
  margin-top: 8px;
  font-size: var(--fs-small);
  line-height: 1.6;
  color: var(--grey);
}

/* ---------- 下载与账号权限 ---------- */

.page-faq .access-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

@media (min-width: 720px) {
  .page-faq .access-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }
}

@media (min-width: 1180px) {
  .page-faq .access-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-faq .access-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-top: 3px solid var(--indigo);
  padding: 22px 20px;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .access-card:hover {
  transform: translateY(-2px);
  border-color: var(--indigo);
  border-top-color: var(--indigo-deep);
}

.page-faq .access-card__title {
  margin: 0 0 10px;
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 1.0625rem;
  line-height: 1.5;
  color: var(--ink);
}

.page-faq .access-card p {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--ink);
}

/* ---------- 变更提醒订阅 ---------- */

.page-faq .subscribe-steps {
  list-style: none;
  margin: 0 0 30px;
  padding: 0;
  counter-reset: none;
}

.page-faq .subscribe-step {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

@media (min-width: 720px) {
  .page-faq .subscribe-step {
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 24px;
    padding: 20px 0;
  }
}

.page-faq .subscribe-step__no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--indigo);
  color: #fff;
  font-family: var(--font-mono);
  font-size: .875rem;
  font-weight: 700;
  line-height: 1;
}

.page-faq .subscribe-step p {
  margin: 0;
  max-width: 60ch;
  font-size: var(--fs-body);
  line-height: 1.85;
  color: var(--ink);
}

.page-faq .note-block {
  border: 1px solid var(--line);
  border-left: 3px solid var(--jade);
  background: var(--warm);
  padding: 22px 22px 20px;
}

.page-faq .note-block__title {
  margin: 0 0 8px;
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 1rem;
  color: var(--ink);
}

.page-faq .note-block p:last-child {
  margin: 0;
  max-width: 60ch;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--ink);
}

/* ---------- 常见疑问 ---------- */

.page-faq .faq-group {
  margin-bottom: 34px;
}

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

.page-faq .faq-group__title {
  margin: 0 0 4px;
  padding-bottom: 10px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: .8125rem;
  letter-spacing: .14em;
  color: var(--indigo);
  border-bottom: 2px solid var(--ink);
}

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

.page-faq .faq-item__q {
  position: relative;
  display: block;
  padding: 18px 48px 18px 0;
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item__q::after {
  content: "+";
  position: absolute;
  right: 6px;
  top: 16px;
  font-family: var(--font-mono);
  font-size: 1.375rem;
  font-weight: 400;
  line-height: 1.4;
  color: var(--indigo);
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-item[open] .faq-item__q::after {
  content: "—";
  color: var(--indigo-deep);
}

.page-faq .faq-item__q:hover {
  color: var(--indigo-deep);
}

.page-faq .faq-item__a {
  padding: 0 48px 20px 0;
}

.page-faq .faq-item__a p {
  margin: 0;
  max-width: 60ch;
  font-size: var(--fs-body);
  line-height: 1.85;
  color: var(--ink);
}

/* ---------- 栏位与术语对照 ---------- */

.page-faq .table-wrap {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--line);
}

.page-faq .glossary {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
  font-size: .9375rem;
  line-height: 1.7;
}

.page-faq .glossary caption {
  text-align: left;
}

.page-faq .glossary thead th {
  background: var(--warm);
  color: var(--ink);
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: .875rem;
  letter-spacing: .04em;
  text-align: left;
  padding: 14px 18px;
  border-bottom: 2px solid var(--indigo);
  white-space: nowrap;
}

.page-faq .glossary tbody th {
  text-align: left;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: .875rem;
  color: var(--indigo-deep);
  white-space: nowrap;
}

.page-faq .glossary tbody th,
.page-faq .glossary tbody td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  vertical-align: top;
}

.page-faq .glossary tbody tr:last-child th,
.page-faq .glossary tbody tr:last-child td {
  border-bottom: 0;
}

.page-faq .glossary tbody tr:hover td,
.page-faq .glossary tbody tr:hover th {
  background: rgba(31, 78, 121, .04);
}

/* ---------- 结尾服务区块 ---------- */

.page-faq .guide-cta {
  margin-top: 72px;
  padding: 38px 24px 40px;
  background-color: var(--indigo-deep);
  background-image:
    linear-gradient(rgba(255, 255, 255, .06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .06) 1px, transparent 1px);
  background-size: 64px 64px;
  color: #fff;
}

@media (min-width: 720px) {
  .page-faq .guide-cta {
    padding: 48px 40px 52px;
  }
}

.page-faq .guide-cta__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.35rem, 2.2vw, 1.75rem);
  line-height: 1.35;
  letter-spacing: -.01em;
  color: #fff;
}

.page-faq .guide-cta__text {
  margin: 0 0 26px;
  max-width: 56ch;
  font-size: var(--fs-body);
  line-height: 1.85;
  color: rgba(255, 255, 255, .86);
}

.page-faq .guide-cta__btn {
  background: #fff;
  color: var(--indigo-deep);
  border-color: #fff;
}

.page-faq .guide-cta__btn:hover {
  background: var(--warm);
  color: var(--ink);
  border-color: var(--warm);
}

/* ---------- 窄屏收敛 ---------- */

@media (max-width: 480px) {
  .page-faq .guide-hero h1 {
    font-size: 1.7rem;
  }

  .page-faq .guide-hero__links .btn {
    width: 100%;
    text-align: center;
  }

  .page-faq .step {
    grid-template-columns: 44px minmax(0, 1fr);
    gap: 14px;
  }

  .page-faq .step__no {
    font-size: 1.5rem;
  }

  .page-faq .data-point__value {
    font-size: 1.65rem;
  }

  .page-faq .color-legend {
    padding: 22px 16px;
  }

  .page-faq .faq-item__q {
    padding-right: 38px;
    font-size: 1rem;
  }

  .page-faq .faq-item__a {
    padding-right: 20px;
  }

  .page-faq .guide-cta {
    margin-top: 56px;
    padding: 30px 18px 32px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .access-card,
  .page-faq .guide-index__list a,
  .page-faq .step__link,
  .page-faq .faq-item__q::after {
    transition: none;
  }

  .page-faq .access-card:hover {
    transform: none;
  }
}
<<<END>>>