.page-faq {
  display: block;
  background: var(--paper-100);
  color: var(--ink-900);
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: 1.85;
  overflow-x: hidden;
}

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

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  padding: 24px 0 44px;
  border-bottom: 2px solid var(--ink-900);
  background:
    linear-gradient(180deg, rgba(53, 224, 212, 0.16) 0%, rgba(53, 224, 212, 0) 78%);
}

.page-faq .faq-hero .breadcrumbs {
  margin-bottom: 26px;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 30px;
}

.page-faq .faq-hero__kicker {
  display: inline-block;
  margin: 0 0 18px;
  padding: 5px 11px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.5;
  letter-spacing: 0.09em;
  color: var(--ink-900);
  background: var(--path-200);
  border: 2px solid var(--ink-900);
  box-shadow: var(--shadow-soft);
}

.page-faq .faq-hero__title {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(28px, 6vw, 44px);
  line-height: 1.24;
  letter-spacing: -0.015em;
  color: var(--ink-900);
}

.page-faq .faq-hero__title em {
  font-style: normal;
  background: linear-gradient(180deg, rgba(53, 224, 212, 0) 62%, var(--path-400) 62%);
}

.page-faq .faq-hero__lede {
  margin: 0 0 26px;
  max-width: 40em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-700);
}

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

.page-faq .faq-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.page-faq .faq-stat {
  padding: 12px 14px;
  background: var(--paper-100);
  border: 2px solid var(--ink-900);
  box-shadow: var(--shadow-soft);
}

.page-faq .faq-stat__label {
  display: block;
  margin-bottom: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--ink-500);
}

.page-faq .faq-stat__value {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 21px;
  line-height: 1.3;
  color: var(--ink-900);
}

/* ---------- 主体布局 ---------- */

.page-faq .faq-body {
  padding: 44px 0 72px;
}

.page-faq .faq-layout {
  display: grid;
  gap: 32px;
}

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

.page-faq .faq-layout__main > .faq-sec + .faq-sec {
  margin-top: 64px;
}

/* ---------- 章节索引 ---------- */

.page-faq .faq-index__cap {
  margin: 0 0 10px;
  padding-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--ink-500);
  border-bottom: 2px solid var(--ink-900);
}

.page-faq .faq-index__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 7px;
  padding: 6px 8px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--ink-700);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: background-color 0.16s ease, border-color 0.16s ease, color 0.16s ease;
}

.page-faq .faq-index__link:hover {
  background: var(--path-200);
  border-left-color: var(--path-400);
  color: var(--ink-900);
}

.page-faq .faq-index__link:focus-visible {
  outline: 2px solid var(--action-500);
  outline-offset: 2px;
}

.page-faq .faq-index__link.is-current,
.page-faq .faq-index__link[aria-current="true"] {
  background: var(--path-200);
  border-left-color: var(--action-500);
  color: var(--ink-900);
  font-weight: 700;
}

.page-faq .faq-index__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-500);
}

/* ---------- 章节头 ---------- */

.page-faq .faq-head {
  margin-bottom: 28px;
}

.page-faq .faq-head__num {
  display: inline-block;
  margin: 0 0 12px;
  padding: 3px 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--ink-900);
  background: var(--path-400);
  border: 2px solid var(--ink-900);
}

.page-faq .faq-head__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(22px, 3.6vw, 30px);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--ink-900);
}

.page-faq .faq-head__lede {
  margin: 0;
  max-width: 42em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-700);
}

/* ---------- 01 两套指南 ---------- */

.page-faq .faq-versions__grid {
  display: grid;
  gap: 16px;
}

.page-faq .faq-doc {
  padding: 20px;
  background: var(--paper-100);
  border: 2px solid var(--ink-900);
  box-shadow: var(--shadow-soft);
}

.page-faq .faq-doc--qy {
  border-left: 6px solid var(--action-500);
  background:
    linear-gradient(180deg, rgba(53, 224, 212, 0.18) 0%, rgba(53, 224, 212, 0) 62%),
    var(--paper-100);
  box-shadow: 5px 5px 0 var(--path-400);
}

.page-faq .faq-doc__label {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.09em;
  color: var(--ink-500);
}

.page-faq .faq-doc__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  line-height: 1.4;
  color: var(--ink-900);
}

.page-faq .faq-doc__text {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-700);
}

.page-faq .faq-doc__list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 2px dashed var(--paper-300);
}

.page-faq .faq-doc__list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 9px 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--ink-900);
  border-bottom: 1px solid var(--paper-300);
}

.page-faq .faq-doc__list li:last-child {
  border-bottom: 0;
}

.page-faq .faq-doc__list li::before {
  content: "";
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  margin-top: 8px;
  background: var(--path-400);
  border: 1px solid var(--ink-900);
}

.page-faq .faq-versions__note {
  margin: 20px 0 0;
  padding: 6px 0 6px 14px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-500);
  border-left: 4px solid var(--path-400);
}

/* ---------- 02 步骤与版本切换 ---------- */

.page-faq .faq-switch {
  position: relative;
}

.page-faq .faq-switch__input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-faq .faq-switch__track {
  display: flex;
  flex-wrap: wrap;
  margin-bottom: 22px;
  background: var(--paper-100);
  border: 2px solid var(--ink-900);
  box-shadow: 4px 4px 0 var(--paper-300);
}

.page-faq .faq-switch__tab {
  flex: 1 1 auto;
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.5;
  text-align: center;
  color: var(--ink-700);
  cursor: pointer;
  user-select: none;
  border-right: 2px solid var(--ink-900);
  transition: background-color 0.16s ease, color 0.16s ease;
}

.page-faq .faq-switch__tab:last-child {
  border-right: 0;
}

.page-faq .faq-switch__tab:hover {
  background: var(--path-200);
  color: var(--ink-900);
}

.page-faq #faq-ver-new:checked ~ .faq-switch__track [for="faq-ver-new"],
.page-faq #faq-ver-old:checked ~ .faq-switch__track [for="faq-ver-old"] {
  background: var(--path-400);
  color: var(--ink-900);
  font-weight: 700;
}

.page-faq .faq-switch__input:focus-visible ~ .faq-switch__track {
  outline: 2px solid var(--action-500);
  outline-offset: 2px;
}

.page-faq .faq-steplist {
  display: none;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq #faq-ver-new:checked ~ .faq-switch__panels .faq-steplist--new,
.page-faq #faq-ver-old:checked ~ .faq-switch__panels .faq-steplist--old {
  display: grid;
  gap: 14px;
}

.page-faq #faq-ver-new:checked ~ .faq-switch__panels .faq-steplist--new {
  display: grid;
}

.page-faq .faq-stepcard {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 14px;
  padding: 18px;
  background: var(--paper-100);
  border: 2px solid var(--ink-900);
  box-shadow: 4px 4px 0 var(--paper-300);
}

.page-faq .faq-stepcard__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 30px;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--ink-500);
}

.page-faq .faq-stepcard__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17.5px;
  line-height: 1.45;
  color: var(--ink-900);
}

.page-faq .faq-stepcard__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-700);
}

.page-faq .faq-stepcard--key {
  border-left: 6px solid var(--action-500);
  background:
    linear-gradient(90deg, rgba(53, 224, 212, 0.34) 0%, rgba(53, 224, 212, 0.08) 72%, rgba(53, 224, 212, 0) 100%),
    var(--paper-100);
  box-shadow: 5px 5px 0 rgba(240, 105, 43, 0.55);
}

.page-faq .faq-stepcard--key .faq-stepcard__num {
  color: var(--ink-900);
}

.page-faq .faq-stepcard__flag {
  display: inline-block;
  margin: 0 0 8px;
  padding: 2px 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--paper-100);
  background: var(--action-500);
}

.page-faq .faq-stepcard__media {
  margin: 14px 0 0;
}

.page-faq .faq-stepcard__media .media__frame {
  position: relative;
  aspect-ratio: 3 / 2;
  overflow: hidden;
  background:
    repeating-linear-gradient(90deg, rgba(10, 27, 46, 0.08) 0 1px, transparent 1px 40px),
    repeating-linear-gradient(180deg, rgba(10, 27, 46, 0.08) 0 1px, transparent 1px 40px),
    var(--path-200);
  border: 2px solid var(--ink-900);
}

.page-faq .faq-stepcard__media .media__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-faq .faq-stepcard__done {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--ink-500);
  cursor: pointer;
}

.page-faq .faq-stepcard__box {
  appearance: none;
  -webkit-appearance: none;
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin: 0;
  background: var(--paper-100);
  border: 2px solid var(--ink-900);
  cursor: pointer;
  display: grid;
  place-content: center;
}

.page-faq .faq-stepcard__box::after {
  content: "";
  width: 9px;
  height: 5px;
  border-left: 2px solid var(--ink-900);
  border-bottom: 2px solid var(--ink-900);
  transform: rotate(-45deg) translate(1px, -1px);
  opacity: 0;
}

.page-faq .faq-stepcard__box:checked {
  background: var(--path-400);
}

.page-faq .faq-stepcard__box:checked::after {
  opacity: 1;
}

.page-faq .faq-stepcard__box:focus-visible {
  outline: 2px solid var(--action-500);
  outline-offset: 2px;
}

.page-faq .faq-steplist--old .faq-stepcard {
  grid-template-columns: 40px minmax(0, 1fr);
  padding: 13px 16px;
  box-shadow: none;
  border-color: var(--ink-500);
}

.page-faq .faq-steplist--old .faq-stepcard__num {
  font-size: 22px;
  color: var(--ink-500);
}

.page-faq .faq-steplist--old .faq-stepcard__title {
  margin: 0;
  font-size: 15.5px;
  font-weight: 500;
  color: var(--ink-700);
}

/* ---------- 03 新旧对照 ---------- */

.page-faq .faq-contrast__figure {
  margin: 0 0 24px;
}

.page-faq .faq-contrast__figure .media__frame {
  aspect-ratio: 2 / 1;
  overflow: hidden;
  border: 2px solid var(--ink-900);
  background:
    repeating-linear-gradient(90deg, rgba(10, 27, 46, 0.07) 0 1px, transparent 1px 48px),
    linear-gradient(90deg, var(--paper-300) 0%, var(--path-200) 100%);
}

.page-faq .faq-contrast__figure .media__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-faq .faq-contrast__figure .media__cap {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--ink-500);
}

.page-faq .faq-map {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-map__row {
  display: grid;
  border: 2px solid var(--ink-900);
  background: var(--paper-100);
}

.page-faq .faq-map__old,
.page-faq .faq-map__new {
  padding: 14px 16px;
  min-width: 0;
}

.page-faq .faq-map__old {
  background: var(--paper-300);
}

.page-faq .faq-map__new {
  background: rgba(53, 224, 212, 0.2);
}

.page-faq .faq-map__arrow {
  display: grid;
  place-content: center;
  min-height: 34px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 17px;
  color: var(--path-400);
  background: var(--ink-900);
}

.page-faq .faq-map__tag {
  display: inline-block;
  margin-bottom: 7px;
  padding: 2px 7px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.07em;
  color: var(--ink-700);
  background: var(--paper-100);
  border: 1px solid var(--ink-900);
}

.page-faq .faq-map__tag--new {
  color: var(--ink-900);
  background: var(--path-400);
}

.page-faq .faq-map__old p,
.page-faq .faq-map__new p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--ink-900);
}

.page-faq .faq-map__total {
  margin: 22px 0 0;
  padding: 16px 18px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--paper-100);
  background: var(--ink-900);
  border-left: 6px solid var(--action-500);
}

/* ---------- 04 端侧清单 ---------- */

.page-faq .faq-lists {
  display: grid;
  gap: 18px;
}

.page-faq .faq-checklist {
  display: flex;
  flex-direction: column;
  border: 2px solid var(--ink-900);
  background: var(--paper-100);
  box-shadow: 4px 4px 0 var(--paper-300);
}

.page-faq .faq-checklist__cap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 13px 18px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.4;
  color: var(--paper-100);
  background: var(--ink-900);
}

.page-faq .faq-checklist--mobile .faq-checklist__cap {
  background: var(--ink-700);
}

.page-faq .faq-checklist__badge {
  flex: 0 0 auto;
  padding: 3px 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--ink-900);
  background: var(--path-400);
}

.page-faq .faq-checklist--mobile .faq-checklist__badge {
  background: var(--action-500);
  color: var(--paper-100);
}

.page-faq .faq-checklist__items {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: faq-item;
}

.page-faq .faq-checklist__items li {
  counter-increment: faq-item;
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 10px;
  padding: 13px 18px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ink-900);
  border-bottom: 1px solid var(--paper-300);
}

.page-faq .faq-checklist__items li:last-child {
  border-bottom: 0;
}

.page-faq .faq-checklist__items li::before {
  content: counter(faq-item, decimal-leading-zero);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 13px;
  color: var(--action-500);
}

.page-faq .faq-checklist--mobile .faq-checklist__items li::before {
  color: var(--ink-500);
}

/* ---------- 05 卡点排查 ---------- */

.page-faq .faq-trouble {
  padding: 32px 20px;
  color: var(--paper-100);
  background:
    radial-gradient(circle at 12% 0%, rgba(53, 224, 212, 0.16) 0%, rgba(53, 224, 212, 0) 58%),
    var(--ink-900);
  border: 2px solid var(--ink-900);
}

.page-faq .faq-trouble .faq-head__num {
  color: var(--ink-900);
  background: var(--path-400);
  border-color: var(--path-400);
}

.page-faq .faq-trouble .faq-head__title {
  color: var(--paper-100);
}

.page-faq .faq-trouble .faq-head__lede {
  color: var(--path-200);
}

.page-faq .faq-trouble__list {
  display: grid;
  gap: 10px;
}

.page-faq .faq-trouble__item {
  background: var(--ink-700);
  border: 1px solid rgba(53, 224, 212, 0.35);
}

.page-faq .faq-trouble__item[open] {
  border-color: var(--path-400);
}

.page-faq .faq-trouble__summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 16px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15.5px;
  line-height: 1.5;
  color: var(--paper-100);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-trouble__summary:focus-visible {
  outline: 2px solid var(--action-500);
  outline-offset: 2px;
}

.page-faq .faq-trouble__num {
  flex: 0 0 auto;
  padding: 2px 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--path-400);
  border: 1px solid var(--path-400);
}

.page-faq .faq-trouble__mark {
  position: relative;
  flex: 0 0 auto;
  width: 14px;
  height: 14px;
  margin-left: auto;
}

.page-faq .faq-trouble__mark::before,
.page-faq .faq-trouble__mark::after {
  content: "";
  position: absolute;
  background: var(--path-400);
}

.page-faq .faq-trouble__mark::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-faq .faq-trouble__mark::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
  transition: opacity 0.16s ease;
}

.page-faq .faq-trouble__item[open] .faq-trouble__mark::after {
  opacity: 0;
}

.page-faq .faq-trouble__body {
  padding: 0 16px 16px;
  border-top: 1px dashed rgba(53, 224, 212, 0.32);
}

.page-faq .faq-trouble__body p {
  margin: 14px 0 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--path-200);
}

.page-faq .faq-trouble__cta {
  margin: 24px 0 0;
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-faq .faq-hero {
    padding: 32px 0 56px;
  }

  .page-faq .faq-body {
    padding: 56px 0 88px;
  }

  .page-faq .faq-doc {
    padding: 24px;
  }

  .page-faq .faq-stepcard {
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 18px;
    padding: 22px;
  }

  .page-faq .faq-stepcard__num {
    font-size: 38px;
  }

  .page-faq .faq-trouble {
    padding: 40px 32px;
  }

  .page-faq .faq-map__row {
    grid-template-columns: minmax(0, 1fr) 46px minmax(0, 1fr);
  }
}

@media (min-width: 760px) {
  .page-faq .faq-versions__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }

  .page-faq .faq-lists {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
    align-items: start;
  }

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

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(230px, 0.85fr);
    align-items: end;
    gap: 48px;
  }

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

  .page-faq .faq-hero__lede {
    font-size: 17px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: 196px minmax(0, 1fr);
    gap: 52px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-index__list {
    grid-template-columns: 1fr;
    gap: 2px;
  }

  .page-faq .faq-index__link {
    font-size: 13.5px;
  }

  .page-faq .faq-layout__main > .faq-sec + .faq-sec {
    margin-top: 88px;
  }

  .page-faq .faq-switch__track {
    display: inline-flex;
    flex-wrap: nowrap;
  }

  .page-faq .faq-switch__tab {
    flex: 0 0 auto;
    padding: 10px 20px;
  }

  .page-faq .faq-contrast__figure {
    margin-bottom: 30px;
  }
}
<<<END>>>