.page-faq {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--paper);
}

.page-faq .breadcrumb {
  padding-top: clamp(18px, 3vw, 30px);
}

.page-faq .faq-stack {
  display: flex;
  flex-direction: column;
  gap: var(--stack-gap);
  padding-top: clamp(20px, 3vw, 36px);
  padding-bottom: clamp(56px, 8vw, 96px);
  min-width: 0;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: flex;
  flex-direction: column;
  gap: clamp(12px, 1.6vw, 18px);
  border-top: 2px solid var(--ink);
  padding-top: clamp(18px, 2.6vw, 28px);
}

.page-faq .faq-hero h1 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(32px, 5.2vw, 72px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--ink);
  max-width: 20ch;
  overflow-wrap: break-word;
}

.page-faq .faq-hero__lead {
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(16px, 1.5vw, 19px);
  line-height: 1.85;
  color: var(--text);
  max-width: 46ch;
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin: 0;
  padding-top: 14px;
  border-top: 1px solid var(--line-dark);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--graphite);
}

.page-faq .faq-hero__meta-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.page-faq .faq-hero__meta-item::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--copper);
}

/* ---------- 深色面板 ---------- */
.page-faq .faq-ink {
  background: var(--ink);
  color: var(--paper);
  border: 1px solid var(--line-copper);
  border-radius: var(--r);
  padding: clamp(22px, 3.6vw, 52px);
}

.page-faq .faq-ink h2 {
  color: var(--paper);
}

.page-faq .faq-ink .section-head__body p {
  color: rgba(244, 241, 234, 0.74);
}

/* ---------- 章节头 ---------- */
.page-faq .section-head {
  display: grid;
  gap: 8px;
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-faq .section-num {
  font-family: var(--mono);
  font-size: clamp(22px, 2.6vw, 32px);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--copper);
}

.page-faq .section-head__body h2 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(23px, 3vw, 38px);
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-faq .section-head__body p {
  margin: 0;
  max-width: 54ch;
  font-size: 15px;
  line-height: 1.8;
}

/* ---------- 步骤条 ---------- */
.page-faq .stepbar {
  list-style: none;
  margin: 0 0 clamp(20px, 3vw, 32px);
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.page-faq .stepbar > li {
  display: flex;
  min-width: 0;
}

.page-faq .stepbar__cell {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
  padding: 16px 16px 18px;
  text-decoration: none;
  background: rgba(244, 241, 234, 0.05);
  border: 1px solid var(--line-copper);
  border-radius: var(--r);
  transition: background 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.page-faq .stepbar__cell:hover,
.page-faq .stepbar__cell:focus-visible {
  background: rgba(22, 48, 74, 0.85);
  border-color: var(--signal);
}

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

.page-faq .stepbar__cell.is-current {
  background: var(--ink-2);
  border-color: var(--signal);
  box-shadow: inset 0 0 0 1px var(--signal), 0 20px 34px -30px rgba(228, 99, 43, 0.9);
}

.page-faq .stepbar__num {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--copper);
}

.page-faq .stepbar__cell.is-current .stepbar__num {
  color: var(--signal);
}

.page-faq .stepbar__title {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 15px;
  line-height: 1.4;
  color: var(--paper);
}

.page-faq .stepbar__hint {
  font-size: 12px;
  line-height: 1.6;
  color: rgba(244, 241, 234, 0.7);
}

/* ---------- 图片 ---------- */
.page-faq .fig {
  margin: 0 0 clamp(20px, 3vw, 32px);
}

.page-faq .fig__frame {
  width: 100%;
  overflow: hidden;
  border-radius: var(--r);
  border: 1px solid var(--line-copper);
  background: var(--ink-2);
}

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

.page-faq .fig__cap {
  margin-top: 10px;
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--graphite);
}

.page-faq .faq-ink .fig__cap {
  color: rgba(244, 241, 234, 0.62);
}

/* ---------- 步骤详卡 ---------- */
.page-faq .stepdetails {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-faq .stepcard {
  background: rgba(22, 48, 74, 0.72);
  border: 1px solid var(--line-light);
  border-radius: var(--r);
  padding: clamp(16px, 2.2vw, 24px);
  scroll-margin-top: 96px;
}

.page-faq .stepcard__num {
  display: inline-block;
  margin-bottom: 8px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--copper);
}

.page-faq .stepcard h3 {
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(17px, 1.9vw, 21px);
  line-height: 1.4;
  color: var(--paper);
}

.page-faq .stepcard__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-faq .stepcard__do h4,
.page-faq .stepcard__see h4 {
  margin: 0 0 8px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--fog);
}

.page-faq .stepcard__do ul {
  margin: 0;
  padding-left: 16px;
  display: grid;
  gap: 6px;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(244, 241, 234, 0.88);
}

.page-faq .stepcard__see p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(244, 241, 234, 0.88);
}

@media (min-width: 560px) {
  .page-faq .stepcard__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 0;
  }
  .page-faq .stepcard__do {
    padding-right: 16px;
  }
  .page-faq .stepcard__see {
    padding-left: 16px;
    border-left: 1px solid var(--line-copper);
  }
}

@media (min-width: 760px) {
  .page-faq .stepbar {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .stepdetails {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }
  .page-faq .section-head {
    grid-template-columns: 80px minmax(0, 1fr);
    gap: 24px;
    align-items: start;
  }
}

/* ---------- 准备清单 ---------- */
.page-faq .prep-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-faq .prep-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: clamp(18px, 2.4vw, 26px);
  background: var(--stone);
  border: 1px solid var(--line-dark-soft);
  border-top: 2px solid var(--clay);
  border-radius: var(--r);
}

.page-faq .prep-card__idx {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--clay);
}

.page-faq .prep-card h3 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.4;
  color: var(--ink);
}

.page-faq .prep-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--text);
}

@media (min-width: 760px) {
  .page-faq .prep-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
  }
}

/* ---------- 绑定对照 ---------- */
.page-faq .bind-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-faq .bind-card {
  padding: clamp(18px, 2.6vw, 30px);
  background: var(--paper);
  border: 1px solid var(--line-dark);
  border-radius: var(--r);
}

.page-faq .bind-card--on {
  border-top: 3px solid var(--moss);
}

.page-faq .bind-card--off {
  border-top: 3px solid var(--fog);
}

.page-faq .bind-card__label {
  display: inline-block;
  margin-bottom: 10px;
  padding: 4px 10px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  border-radius: 999px;
}

.page-faq .bind-card--on .bind-card__label {
  background: rgba(79, 107, 87, 0.14);
  border: 1px solid rgba(79, 107, 87, 0.38);
  color: var(--moss);
}

.page-faq .bind-card--off .bind-card__label {
  background: rgba(126, 145, 132, 0.16);
  border: 1px solid rgba(126, 145, 132, 0.44);
  color: var(--text);
}

.page-faq .bind-card h3 {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(17px, 2vw, 21px);
  line-height: 1.4;
  color: var(--ink);
}

.page-faq .bind-card__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-faq .bind-card__list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--text);
}

.page-faq .bind-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--copper);
}

@media (min-width: 760px) {
  .page-faq .bind-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0;
  }
  .page-faq .bind-card {
    border-radius: 0;
  }
  .page-faq .bind-card:first-child {
    border-radius: var(--r) 0 0 var(--r);
    border-right: 0;
  }
  .page-faq .bind-card:last-child {
    border-radius: 0 var(--r) var(--r) 0;
    border-left: 1px solid var(--line-copper);
  }
}

/* ---------- 失败排查 ---------- */
.page-faq .fail-wrap {
  background: var(--stone);
  border: 1px solid var(--line-dark-soft);
  border-radius: var(--r);
  padding: clamp(22px, 3.6vw, 48px);
}

.page-faq .fail-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}

.page-faq .fail-list {
  list-style: none;
  counter-reset: fail;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line-dark);
}

.page-faq .fail-list li {
  position: relative;
  counter-increment: fail;
  padding: 20px 0 20px 36px;
  border-bottom: 1px solid var(--line-dark);
}

.page-faq .fail-list li::before {
  content: counter(fail);
  position: absolute;
  left: 0;
  top: 20px;
  width: 20px;
  height: 20px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: rgba(176, 113, 79, 0.16);
  color: var(--clay);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
}

.page-faq .fail-list h3 {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.45;
  color: var(--ink);
}

.page-faq .fail-list p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--text);
}

.page-faq .fail-grid .fig {
  margin: 0;
}

/* ---------- 折叠问答 ---------- */
.page-faq .qa {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin-top: clamp(22px, 3vw, 34px);
}

.page-faq .qa__item {
  background: var(--paper);
  border: 1px solid var(--line-dark-soft);
  border-radius: var(--r);
  padding: 0 clamp(14px, 1.8vw, 20px);
  align-self: start;
  transition: background 0.18s ease;
}

.page-faq .qa__item[open] {
  background: var(--paper);
  border-color: var(--line-dark);
}

.page-faq .qa__item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 15px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 15px;
  line-height: 1.5;
  color: var(--ink);
}

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

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

.page-faq .qa__item summary::after {
  content: "";
  flex: none;
  width: 0;
  height: 0;
  border-left: 6px solid var(--clay);
  border-top: 4px solid transparent;
  border-bottom: 4px solid transparent;
  transition: transform 0.18s ease;
}

.page-faq .qa__item[open] summary::after {
  transform: rotate(90deg);
}

.page-faq .qa__item p {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.78;
  color: var(--text);
}

@media (min-width: 880px) {
  .page-faq .qa {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px 14px;
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-faq .fail-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 40px;
    align-items: start;
  }
}

/* ---------- 教程索引 ---------- */
.page-faq .tut-tools {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 18px;
  margin-bottom: clamp(14px, 2.2vw, 22px);
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-dark);
}

.page-faq .tut-tools > .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .tut-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid var(--line-dark-soft);
}

.page-faq .tut-item {
  display: flex;
  align-items: baseline;
  gap: 12px;
  min-width: 0;
  padding: 11px 0;
  border-bottom: 1px solid var(--line-dark-soft);
}

.page-faq .tut-item[hidden] {
  display: none;
}

.page-faq .tut-item__num {
  flex: none;
  width: 22px;
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--copper);
}

.page-faq .tut-item__title {
  font-size: 14px;
  line-height: 1.65;
  color: var(--text);
  overflow-wrap: break-word;
}

@media (min-width: 820px) {
  .page-faq .tut-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 40px;
  }
}

/* ---------- 协助区 ---------- */
.page-faq .help > .section-num {
  display: block;
  margin-bottom: 14px;
}

.page-faq .help__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}

.page-faq .help h2 {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(22px, 2.8vw, 34px);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .help__main p {
  margin: 0 0 20px;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(244, 241, 234, 0.8);
}

.page-faq .help__main strong {
  color: var(--paper);
  font-weight: 700;
}

.page-faq .help__side {
  border-top: 1px solid var(--line-copper);
  padding-top: 18px;
}

.page-faq .help__side h3 {
  margin: 0 0 12px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--copper);
}

.page-faq .help__list {
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-faq .help__list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(244, 241, 234, 0.82);
}

.page-faq .help__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--signal);
}

.page-faq .help__tpl {
  margin: 0;
  padding: 12px 14px;
  background: rgba(244, 241, 234, 0.06);
  border: 1px dashed var(--line-copper);
  border-radius: var(--r);
  font-size: 12px;
  line-height: 1.7;
  color: var(--paper);
  overflow-wrap: break-word;
}

@media (min-width: 880px) {
  .page-faq .help__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 48px;
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .stepbar__cell,
  .page-faq .qa__item,
  .page-faq .qa__item summary::after {
    transition-duration: 0.01ms;
  }
}
<<<END>>>