.page-faq {
  --faq-cut: 16px;
  --faq-cut-lg: 20px;
  display: block;
  background: var(--ink-900);
  color: var(--paper);
  padding-bottom: var(--sp-7);
}

.page-faq .crumbs {
  padding-top: var(--sp-3);
  padding-bottom: var(--sp-2);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: var(--sp-3) 0 var(--sp-5);
  border-bottom: 1px solid var(--ink-700);
  background:
    radial-gradient(120% 90% at 100% 0%, rgba(201, 162, 39, 0.12), transparent 58%),
    linear-gradient(180deg, var(--ink-850) 0%, var(--ink-900) 88%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 96px;
  height: 2px;
  background: var(--gold);
}

.page-faq .faq-hero__title {
  margin: var(--sp-2) 0 var(--sp-2);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.25rem, 7vw, var(--fs-64));
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-hero__lede {
  max-width: 60ch;
  margin: 0 0 var(--sp-2);
  font-size: var(--fs-16);
  line-height: 1.8;
  color: var(--paper);
  opacity: 0.86;
}

.page-faq .faq-hero__meta {
  margin: 0;
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--ash);
}

.page-faq .faq-hero__sub {
  margin: var(--sp-5) 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-22);
  line-height: 1.3;
  color: var(--paper);
}

/* ---------- 三步指引 ---------- */
.page-faq .steps {
  list-style: none;
  margin: var(--sp-3) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-faq .step-card {
  position: relative;
  padding: var(--sp-3);
  background: linear-gradient(158deg, var(--ink-800) 0%, var(--ink-900) 82%);
  border: 1px solid var(--ink-700);
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-cut), 100% 100%, var(--faq-cut) 100%, 0 calc(100% - var(--faq-cut)));
}

.page-faq .step-card__top {
  position: relative;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--sp-2);
  padding-bottom: 12px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--ink-700);
}

.page-faq .step-card__top::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 44px;
  height: 2px;
  background: var(--celadon);
}

.page-faq .step-card__idx {
  font-size: var(--fs-28);
  line-height: 1;
  color: var(--celadon-soft);
  letter-spacing: 0.02em;
}

.page-faq .step-card__time {
  font-size: var(--fs-12);
  color: var(--ash);
  letter-spacing: 0.06em;
}

.page-faq .step-card__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-22);
  line-height: 1.25;
  color: var(--gold-bright);
}

.page-faq .step-card__text {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--paper);
  opacity: 0.84;
}

/* ---------- 首屏图示 ---------- */
.page-faq .faq-figure {
  margin: 0;
  padding: var(--sp-4) 0;
  background: var(--ink-850);
  border-bottom: 1px solid var(--ink-700);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--ink-700);
}

.page-faq .faq-figure__cap {
  margin-top: 12px;
  font-size: var(--fs-12);
  line-height: 1.7;
  color: var(--ash);
  max-width: 68ch;
}

/* ---------- 主布局 ---------- */
.page-faq .layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-3);
  padding-top: var(--sp-4);
}

.page-faq .rail {
  padding-bottom: var(--sp-2);
  border-bottom: 1px solid var(--ink-700);
}

.page-faq .rail__label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ash);
}

.page-faq .rail__list {
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  display: flex;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-faq .rail__list::-webkit-scrollbar {
  display: none;
}

.page-faq .rail__list > li {
  flex: none;
}

.page-faq .rail__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 12px;
  font-size: var(--fs-14);
  white-space: nowrap;
  color: var(--ash);
  text-decoration: none;
  border: 1px solid var(--ink-700);
  background: var(--ink-850);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .rail__idx {
  font-size: var(--fs-12);
  color: var(--ink-600);
  letter-spacing: 0.06em;
  transition: color 0.2s var(--ease);
}

.page-faq .rail__link:hover {
  color: var(--paper);
  border-color: var(--gold-deep);
}

.page-faq .rail__link.is-active {
  color: var(--gold-bright);
  border-color: var(--gold);
  background: linear-gradient(90deg, rgba(201, 162, 39, 0.14), rgba(201, 162, 39, 0) 78%);
}

.page-faq .rail__link.is-active .rail__idx {
  color: var(--gold);
}

/* ---------- 问答分组 ---------- */
.page-faq .qa-block {
  padding: var(--sp-4) 0 0;
  border-top: 1px solid var(--ink-700);
}

.page-faq .qa-block:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-faq .qa-block .section__idx {
  color: var(--gold);
  font-size: var(--fs-14);
  letter-spacing: 0.14em;
  margin: 0 0 6px;
}

.page-faq .qa-block .section__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.375rem, 3.6vw, var(--fs-28));
  line-height: 1.25;
  color: var(--paper);
}

.page-faq .qa-block .section__note {
  max-width: 62ch;
  margin: 0 0 var(--sp-3);
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--ash);
}

.page-faq .qa-list {
  border-bottom: 1px solid var(--ink-700);
}

.page-faq .qa {
  border-top: 1px solid var(--ink-700);
  transition: background 0.2s var(--ease);
}

.page-faq .qa:first-child {
  border-top: 0;
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
  font-size: var(--fs-16);
  line-height: 1.6;
  color: var(--paper);
  transition: color 0.18s var(--ease);
}

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

.page-faq .qa__q:hover,
.page-faq .qa__q:focus-visible {
  color: var(--gold-bright);
}

.page-faq .qa__idx {
  flex: none;
  padding-top: 4px;
  font-size: var(--fs-12);
  letter-spacing: 0.06em;
  color: var(--ash);
}

.page-faq .qa__text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .qa__mark {
  position: relative;
  flex: none;
  width: 14px;
  height: 14px;
  margin-top: 5px;
  margin-left: 8px;
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  background: var(--gold-deep);
  transition: transform 0.22s var(--ease), opacity 0.22s var(--ease), background 0.22s var(--ease);
}

.page-faq .qa__mark::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 1px;
}

.page-faq .qa__mark::after {
  left: 6px;
  top: 0;
  width: 1px;
  height: 14px;
}

.page-faq .qa[open] .qa__mark::before {
  background: var(--gold-bright);
}

.page-faq .qa[open] .qa__mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .qa[open] .qa__q {
  color: var(--gold-bright);
  border-bottom: 1px solid var(--gold-deep);
}

.page-faq .qa__body {
  padding: 14px 0 20px;
  font-size: var(--fs-14);
  line-height: 1.85;
  color: var(--paper);
  opacity: 0.86;
}

.page-faq .qa__body p {
  max-width: 66ch;
  margin: 0 0 10px;
}

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

/* ---------- 移动端示意图 ---------- */
.page-faq .mq-figure {
  margin: 0 0 var(--sp-4);
  display: grid;
  gap: 10px;
  justify-items: start;
}

.page-faq .mq-figure img {
  display: block;
  width: 100%;
  max-width: 260px;
  height: auto;
  border: 1px solid var(--ink-700);
  background: var(--ink-850);
}

.page-faq .mq-figure__cap {
  font-size: var(--fs-12);
  line-height: 1.7;
  color: var(--ash);
  max-width: 46ch;
}

/* ---------- 人工协助面板 ---------- */
.page-faq .help-panel {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: var(--sp-4) var(--sp-3);
  background: linear-gradient(150deg, var(--ink-800) 0%, var(--ink-900) 88%);
  border: 1px solid var(--ink-700);
  clip-path: polygon(0 0, calc(100% - var(--faq-cut-lg)) 0, 100% var(--faq-cut-lg), 100% 100%, var(--faq-cut-lg) 100%, 0 calc(100% - var(--faq-cut-lg)));
}

.page-faq .help-panel__flag {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: var(--ash);
}

.page-faq .help-panel__dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cinnabar);
  box-shadow: 0 0 0 4px rgba(192, 57, 43, 0.16);
}

.page-faq .help-panel__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-22);
  line-height: 1.3;
  color: var(--paper);
}

.page-faq .help-panel__text {
  max-width: 64ch;
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.85;
  color: var(--paper);
  opacity: 0.84;
}

.page-faq .help-panel__channels {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--ink-700);
  border: 1px solid var(--ink-700);
}

.page-faq .help-panel__channel {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 14px;
  padding: 12px 14px;
  background: var(--ink-850);
}

.page-faq .help-panel__key {
  flex: none;
  min-width: 72px;
  font-size: var(--fs-12);
  letter-spacing: 0.1em;
  color: var(--ash);
}

.page-faq .help-panel__val {
  font-size: var(--fs-14);
  color: var(--paper);
  word-break: break-all;
}

.page-faq .help-panel__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .help-panel__aside {
  margin: var(--sp-3) 0 0;
  font-size: var(--fs-14);
  line-height: 1.9;
  color: var(--ash);
}

.page-faq .help-panel__aside a {
  text-decoration: none;
  border-bottom: 1px solid rgba(201, 162, 39, 0.4);
}

.page-faq .help-panel__aside a:hover {
  border-bottom-color: var(--gold-bright);
}

/* ---------- 中屏 ---------- */
@media (min-width: 800px) {
  .page-faq .faq-hero {
    padding: var(--sp-4) 0 var(--sp-6);
  }

  .page-faq .faq-hero__lede {
    font-size: var(--fs-18);
  }

  .page-faq .steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
    border: 1px solid var(--ink-700);
  }

  .page-faq .step-card {
    border: 0;
    background: none;
  }

  .page-faq .step-card + .step-card {
    border-left: 1px solid var(--ink-700);
  }

  .page-faq .step-card__text {
    font-size: var(--fs-14);
  }

  .page-faq .help-panel {
    padding: var(--sp-5) var(--sp-4);
  }

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

  .page-faq .help-panel__channel {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .page-faq .help-panel__key {
    min-width: 0;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 1024px) {
  .page-faq .layout {
    grid-template-columns: 208px minmax(0, 1fr);
    gap: var(--sp-6);
    align-items: start;
    padding-top: var(--sp-5);
  }

  .page-faq .rail {
    position: sticky;
    top: calc(var(--header-h) + 28px);
    padding-bottom: 0;
    border-bottom: 0;
    border-right: 1px solid var(--ink-700);
    padding-right: var(--sp-3);
  }

  .page-faq .rail__list {
    display: block;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .rail__list > li + li {
    margin-top: 4px;
  }

  .page-faq .rail__link {
    white-space: normal;
    border: 0;
    border-left: 2px solid transparent;
    background: none;
    padding: 10px 12px;
    font-size: var(--fs-14);
  }

  .page-faq .rail__link:hover {
    border-left-color: var(--gold-deep);
    background: linear-gradient(90deg, rgba(201, 162, 39, 0.08), transparent 80%);
  }

  .page-faq .rail__link.is-active {
    border-left-color: var(--gold);
    background: linear-gradient(90deg, rgba(201, 162, 39, 0.16), transparent 82%);
  }

  .page-faq .qa-block {
    padding-top: var(--sp-5);
  }

  .page-faq .qa-block:first-child {
    padding-top: 0;
  }

  .page-faq .qa__q {
    padding: 18px 0;
    font-size: var(--fs-18);
  }

  .page-faq .qa__body {
    padding-left: 52px;
    padding-bottom: 24px;
    font-size: var(--fs-16);
  }

  .page-faq .mq-figure {
    grid-template-columns: 260px minmax(0, 1fr);
    align-items: end;
    justify-items: stretch;
    gap: var(--sp-3);
  }

  .page-faq .mq-figure img {
    max-width: 260px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .rail__link,
  .page-faq .qa__q,
  .page-faq .qa__mark::before,
  .page-faq .qa__mark::after {
    transition: none;
  }
}
<<<END>>>