.page-faq {
  background: var(--ink-900);
  color: var(--text);
  font-family: var(--font-body);
  padding-bottom: clamp(40px, 7vw, 88px);
  overflow-x: hidden;
}

.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  padding-top: calc(var(--header-h) + 18px);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--text-dim);
}

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

.page-faq .breadcrumb__link:hover,
.page-faq .breadcrumb__link:focus-visible {
  color: var(--gold-lit);
  border-bottom-color: var(--gold);
}

.page-faq .breadcrumb__sep {
  color: var(--line);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  padding: clamp(22px, 4vw, 44px) 0 clamp(34px, 6vw, 62px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: -30%;
  left: -25%;
  width: 110%;
  height: 130%;
  background: radial-gradient(52% 58% at 32% 26%, rgba(212, 162, 76, 0.16), transparent 70%);
  pointer-events: none;
}

.page-faq .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-faq .faq-hero__title {
  margin: 16px 0 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(30px, 6.6vw, 66px);
  line-height: 1.22;
  letter-spacing: 0.06em;
  color: var(--text);
}

.page-faq .lede {
  margin: 18px 0 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-dim);
}

.page-faq .faq-hero__lede {
  max-width: 36em;
  font-size: 16px;
}

.page-faq .faq-facts {
  list-style: none;
  margin: clamp(26px, 4vw, 40px) 0 0;
  padding: 20px 0 0;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 20px;
}

.page-faq .faq-fact {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-faq .faq-fact__num {
  font-family: var(--font-mono);
  font-size: 26px;
  letter-spacing: 0.04em;
  color: var(--gold-lit);
  line-height: 1;
}

.page-faq .faq-fact__label {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--text-dim);
  line-height: 1.5;
}

/* ---------- 章节跳转 ---------- */
.page-faq .faq-jump {
  margin-top: clamp(24px, 4vw, 34px);
}

.page-faq .faq-jump__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-jump__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--text-dim);
  text-decoration: none;
  background: rgba(20, 22, 28, 0.6);
  transition: transform var(--ease), border-color var(--ease), color var(--ease);
}

.page-faq .faq-jump__link span {
  color: var(--gold);
}

.page-faq .faq-jump__link:hover,
.page-faq .faq-jump__link:focus-visible {
  transform: translateY(-2px);
  border-color: var(--gold);
  color: var(--text);
}

.page-faq .faq-jump__link[data-active] {
  border-color: rgba(99, 230, 210, 0.6);
  color: var(--text);
  box-shadow: inset 0 0 0 1px rgba(99, 230, 210, 0.18);
}

.page-faq .faq-jump__link[data-active] span {
  color: var(--cyan);
}

/* ---------- 区块骨架 ---------- */
.page-faq .faq-block {
  position: relative;
  padding: clamp(34px, 6vw, 70px) 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-block__head {
  max-width: 44em;
}

.page-faq .faq-block__head h2 {
  margin: 12px 0 0;
}

.page-faq .sec-title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(23px, 3.6vw, 36px);
  line-height: 1.32;
  letter-spacing: 0.05em;
  color: var(--text);
}

/* ---------- 步骤流 ---------- */
.page-faq .faq-flow {
  margin-top: clamp(24px, 4vw, 42px);
}

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

.page-faq .faq-flow__item {
  display: grid;
  gap: 8px;
  min-width: 0;
}

.page-faq .faq-flow__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--gold);
  padding-left: 2px;
}

.page-faq .faq-flow__item[data-active] .faq-flow__num {
  color: var(--cyan);
}

.page-faq .faq-step {
  border: 1px solid var(--line);
  border-left: 2px solid var(--line);
  border-radius: 2px;
  background: var(--ink-800);
  transition: border-color var(--ease), transform var(--ease), background var(--ease);
}

.page-faq .faq-step:hover {
  transform: translateY(-2px);
  border-color: rgba(212, 162, 76, 0.45);
  border-left-color: var(--gold);
}

.page-faq .faq-step[open] {
  border-left-color: var(--gold);
  background: linear-gradient(180deg, var(--ink-700), var(--ink-800));
}

.page-faq .faq-step__sum {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px 14px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-step__sum::after {
  content: "＋";
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--gold);
  margin-left: auto;
}

.page-faq .faq-step[open] .faq-step__sum::after {
  content: "－";
  color: var(--gold-lit);
}

.page-faq .faq-step__title {
  font-family: var(--font-display);
  font-size: 17px;
  letter-spacing: 0.03em;
  color: var(--text);
  line-height: 1.5;
}

.page-faq .faq-step__meta {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--text-dim);
}

.page-faq .faq-step__body {
  padding: 0 16px 18px;
  border-top: 1px solid rgba(42, 45, 54, 0.7);
}

.page-faq .faq-step__body p {
  margin: 14px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-faq .faq-step__result {
  color: var(--jade) !important;
  border-left: 2px solid rgba(63, 169, 138, 0.55);
  padding-left: 12px;
}

.page-faq .faq-figure {
  margin: clamp(24px, 4vw, 38px) 0 0;
  max-width: 100%;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: var(--ink-800);
  object-fit: cover;
}

.page-faq .faq-figure .media__note {
  display: block;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  line-height: 1.7;
}

.page-faq .faq-figure--wide {
  max-width: 640px;
}

.page-faq .faq-diagram {
  display: block;
  width: 100%;
  max-width: 420px;
  height: auto;
  margin-top: clamp(20px, 3vw, 30px);
  color: var(--text);
}

/* ---------- 九项设置 ---------- */
.page-faq .faq-settings {
  margin-top: clamp(24px, 4vw, 40px);
  display: grid;
  gap: clamp(22px, 3.5vw, 28px);
}

.page-faq .faq-group {
  border-top: 1px solid rgba(212, 162, 76, 0.55);
  padding-top: 14px;
  min-width: 0;
}

.page-faq .faq-group__title {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  margin: 0;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 19px;
  letter-spacing: 0.06em;
  color: var(--text);
}

.page-faq .faq-group__count {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--gold);
}

.page-faq .faq-group__list {
  margin: 10px 0 0;
}

.page-faq .faq-set {
  padding: 12px 0;
  border-bottom: 1px solid rgba(42, 45, 54, 0.75);
}

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

.page-faq .faq-set dt {
  margin: 0;
}

.page-faq .faq-set__key {
  display: inline-block;
  padding: 2px 7px;
  border: 1px solid rgba(212, 162, 76, 0.28);
  border-radius: 2px;
  background: rgba(212, 162, 76, 0.08);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gold-lit);
}

.page-faq .faq-set dd {
  margin: 9px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--text-dim);
}

/* ---------- 历史记录 ---------- */
.page-faq .faq-split {
  margin-top: clamp(22px, 4vw, 36px);
  display: grid;
  gap: clamp(20px, 3vw, 28px);
}

.page-faq .faq-split__main p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-dim);
  max-width: 36em;
}

.page-faq .faq-checklist {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-checklist li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-dim);
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(42, 45, 54, 0.7);
}

.page-faq .faq-split__side {
  border: 1px solid var(--line);
  border-radius: 2px;
  background: var(--ink-800);
  padding: 16px;
}

.page-faq .faq-split__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-faq .faq-log {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-log__row {
  display: grid;
  gap: 3px;
  padding: 10px 0;
  border-bottom: 1px dashed rgba(42, 45, 54, 0.9);
}

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

.page-faq .faq-log__time {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--gold-lit);
}

.page-faq .faq-log__what {
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-dim);
}

/* ---------- 检索与筛选 ---------- */
.page-faq .faq-search {
  margin-top: clamp(22px, 4vw, 38px);
  display: grid;
  gap: clamp(22px, 3.5vw, 30px);
}

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

.page-faq .faq-search__item {
  position: relative;
  padding: 16px 16px 16px 18px;
  border-left: 2px solid rgba(212, 162, 76, 0.4);
  background: linear-gradient(90deg, rgba(20, 22, 28, 0.9), rgba(11, 12, 16, 0.3));
  transition: border-color var(--ease), transform var(--ease);
}

.page-faq .faq-search__item:hover {
  border-left-color: var(--gold);
  transform: translateY(-2px);
}

.page-faq .faq-search__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.page-faq .faq-search__title {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 17px;
  letter-spacing: 0.04em;
  color: var(--text);
}

.page-faq .faq-search__item p {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--text-dim);
}

.page-faq .faq-tips {
  border-top: 1px solid var(--line);
  padding-top: 16px;
}

.page-faq .faq-tips__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-faq .faq-tips__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-tips__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-dim);
}

.page-faq .faq-tips__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 7px;
  height: 1px;
  background: var(--gold);
}

.page-faq .faq-kbd {
  display: inline-block;
  min-width: 20px;
  padding: 1px 6px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: var(--ink-700);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--gold-lit);
  text-align: center;
}

/* ---------- 导出提示 ---------- */
.page-faq .faq-prompts {
  margin-top: clamp(22px, 4vw, 36px);
  display: grid;
  gap: 2px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-prompt {
  padding: 18px 0;
  border-bottom: 1px solid rgba(42, 45, 54, 0.75);
  display: grid;
  gap: 10px;
}

.page-faq .faq-prompt__key {
  display: inline-block;
  justify-self: start;
  padding: 3px 8px;
  border: 1px solid rgba(192, 57, 43, 0.45);
  border-radius: 2px;
  background: rgba(192, 57, 43, 0.1);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: #e2847a;
}

.page-faq .faq-prompt p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-dim);
  max-width: 40em;
}

.page-faq .faq-note {
  margin: clamp(20px, 3vw, 28px) 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-dim);
  max-width: 42em;
  padding-left: 14px;
  border-left: 1px solid rgba(212, 162, 76, 0.5);
}

.page-faq .faq-inline-link {
  color: var(--gold-lit);
  text-decoration: none;
  border-bottom: 1px solid rgba(212, 162, 76, 0.5);
  transition: color var(--ease), border-color var(--ease);
}

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

/* ---------- 教程索引 ---------- */
.page-faq .faq-index {
  list-style: none;
  margin: clamp(22px, 4vw, 36px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-index__row {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(42, 45, 54, 0.75);
  transition: background var(--ease), padding-left var(--ease);
}

.page-faq .faq-index__row:hover {
  background: rgba(20, 22, 28, 0.75);
  padding-left: 8px;
}

.page-faq .faq-index__name {
  font-family: var(--font-display);
  font-size: 17px;
  letter-spacing: 0.05em;
  color: var(--text);
}

.page-faq .faq-index__meta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--text-dim);
}

.page-faq .faq-index__meta b {
  font-weight: 400;
  color: var(--gold-lit);
}

/* ---------- 收尾行动区 ---------- */
.page-faq .faq-cta {
  margin-top: clamp(30px, 5vw, 48px);
  padding: clamp(22px, 4vw, 36px) clamp(18px, 3.5vw, 34px) clamp(32px, 5vw, 46px);
  border: 1px solid rgba(212, 162, 76, 0.35);
  background:
    radial-gradient(120% 130% at 100% 0%, rgba(212, 162, 76, 0.16), transparent 62%),
    var(--ink-800);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), 0 100%);
}

.page-faq .faq-cta__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(21px, 3.2vw, 30px);
  letter-spacing: 0.05em;
  line-height: 1.4;
  color: var(--text);
}

.page-faq .faq-cta__text {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-dim);
  max-width: 34em;
}

.page-faq .faq-cta__actions {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 20px;
  border: 1px solid var(--line);
  border-radius: 2px;
  font-family: var(--font-body);
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--text);
  text-decoration: none;
  background: transparent;
  transition: transform var(--ease), border-color var(--ease), color var(--ease), background var(--ease);
}

.page-faq .faq-btn:hover,
.page-faq .faq-btn:focus-visible {
  transform: translateY(-2px);
  border-color: var(--gold);
  color: var(--gold-lit);
}

.page-faq .faq-btn--solid {
  border-color: var(--gold);
  background: linear-gradient(180deg, rgba(212, 162, 76, 0.28), rgba(212, 162, 76, 0.12));
  color: var(--gold-lit);
}

.page-faq .faq-btn--solid:hover,
.page-faq .faq-btn--solid:focus-visible {
  border-color: var(--gold-lit);
  background: linear-gradient(180deg, rgba(212, 162, 76, 0.42), rgba(212, 162, 76, 0.2));
  color: #fff;
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 600px) {
  .page-faq .faq-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-index__row {
    grid-template-columns: 1fr auto;
    align-items: baseline;
    gap: 16px;
  }

  .page-faq .faq-prompt {
    grid-template-columns: 200px minmax(0, 1fr);
    align-items: start;
    gap: 20px;
  }
}

@media (min-width: 820px) {
  .page-faq .faq-settings {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-search {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-log__row {
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 12px;
    align-items: baseline;
  }
}

@media (min-width: 880px) {
  .page-faq .faq-flow__list {
    gap: 8px;
  }

  .page-faq .faq-flow__item {
    grid-template-columns: 84px minmax(0, 1fr);
    column-gap: 26px;
    align-items: start;
  }

  .page-faq .faq-flow__num {
    position: sticky;
    top: calc(var(--header-h) + 30px);
    padding-top: 18px;
    padding-left: 0;
    text-align: right;
    font-size: 13px;
  }

  .page-faq .faq-step__sum {
    padding: 18px 22px;
  }

  .page-faq .faq-step__body {
    padding: 0 22px 22px;
  }

  .page-faq .faq-step__title {
    font-size: 19px;
  }

  .page-faq .faq-diagram {
    margin-left: auto;
    margin-right: auto;
  }

  .page-faq .faq-figure--wide {
    margin-left: auto;
    margin-right: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-step,
  .page-faq .faq-jump__link,
  .page-faq .faq-search__item,
  .page-faq .faq-index__row,
  .page-faq .faq-btn,
  .page-faq .breadcrumb__link {
    transition-duration: 0.001ms;
  }

  .page-faq .faq-step:hover,
  .page-faq .faq-jump__link:hover,
  .page-faq .faq-search__item:hover,
  .page-faq .faq-btn:hover {
    transform: none;
  }
}