.page-faq {
  --faq-muted: #B9CBE2;
  --faq-rail: 240px;

  display: block;
  color: var(--white);
  background: var(--ink-900);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(28px, 5vw, 58px) 0 clamp(26px, 4vw, 46px);
  background: linear-gradient(152deg, var(--ink-800) 0%, var(--ink-900) 64%);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    102deg,
    rgba(36, 64, 95, 0.55) 0 1px,
    transparent 1px 48px
  );
  opacity: 0.5;
  pointer-events: none;
}

.page-faq .faq-hero > .wrap {
  position: relative;
  z-index: 1;
}

.page-faq .faq-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
}

.page-faq .faq-crumbs .breadcrumbs__item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--steel);
}

.page-faq .faq-crumbs .breadcrumbs__item + .breadcrumbs__item::before {
  content: "/";
  color: var(--line);
}

.page-faq .faq-crumbs a {
  color: var(--steel);
  text-decoration: none;
}

.page-faq .faq-crumbs a:hover,
.page-faq .faq-crumbs a:focus-visible {
  color: var(--cyan);
}

.page-faq .faq-crumbs a[aria-current="page"] {
  color: var(--white);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 4vw, 44px);
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    align-items: end;
  }
}

.page-faq .faq-hero__title {
  margin: 12px 0 16px;
  font-family: var(--font-display);
  font-size: clamp(31px, 5.2vw, 62px);
  font-weight: 700;
  line-height: 1.06;
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-faq .faq-hero__lead {
  max-width: 60ch;
  margin: 0;
  padding-left: 16px;
  border-left: 3px solid var(--flame);
  font-size: clamp(15px, 1.15vw, 17.5px);
  line-height: 1.78;
  color: var(--faq-muted);
}

.page-faq .faq-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-stat {
  padding: 13px 14px 15px;
  background: var(--ink-700);
  border-left: 2px solid var(--cyan);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
}

.page-faq .faq-stat:nth-child(2) {
  border-left-color: var(--flame);
}

.page-faq .faq-stat:nth-child(3) {
  border-left-color: var(--amber);
}

.page-faq .faq-stat:nth-child(4) {
  border-left-color: var(--cyan);
}

.page-faq .faq-stat__value {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(22px, 2.6vw, 30px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.01em;
  color: var(--white);
}

.page-faq .faq-stat__unit {
  margin-left: 3px;
  font-size: 0.52em;
  font-weight: 600;
  color: var(--steel);
}

.page-faq .faq-stat__label {
  display: block;
  margin-top: 7px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.45;
  letter-spacing: 0.06em;
  color: var(--steel);
}

/* ---------- 主体分栏 ---------- */
.page-faq .faq-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3.4vw, 38px);
  align-items: start;
  padding-top: clamp(26px, 4vw, 46px);
  padding-bottom: clamp(42px, 6vw, 78px);
}

@media (min-width: 1000px) {
  .page-faq .faq-shell {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    column-gap: clamp(28px, 4vw, 56px);
  }
}

/* ---------- 左侧主题目录 ---------- */
.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--steel);
}

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

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-left: -1px;
  padding: 9px 12px;
  border-left: 2px solid transparent;
  font-size: 14px;
  line-height: 1.45;
  color: var(--steel);
  text-decoration: none;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--white);
  border-left-color: var(--cyan);
  background: rgba(47, 240, 208, 0.07);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--amber);
}

.page-faq .faq-index__foot {
  margin: 16px 0 0;
  padding-left: 12px;
  border-left: 2px solid var(--flame);
  font-size: 13px;
  line-height: 1.7;
  color: var(--steel);
}

.page-faq .faq-index__foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 240, 208, 0.45);
}

@media (min-width: 1000px) {
  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 20px);
  }
}

@media (max-width: 999px) {
  .page-faq .faq-index__list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 2px;
    border-left: 0;
  }

  .page-faq .faq-index__link {
    margin-left: 0;
    min-height: 44px;
    align-items: center;
    border-left: 2px solid var(--line);
    background: var(--ink-800);
  }

  .page-faq .faq-index__foot {
    display: none;
  }
}

/* ---------- 筛选 ---------- */
.page-faq .faq-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: clamp(16px, 2.4vw, 24px);
}

.page-faq .faq-filter {
  appearance: none;
  min-height: 40px;
  padding: 8px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--steel);
  background: transparent;
  border: 1px solid var(--line);
  cursor: pointer;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .faq-filter:hover {
  color: var(--white);
  border-color: var(--cyan);
}

.page-faq .faq-filter[aria-pressed="true"] {
  color: var(--ink-900);
  background: var(--cyan);
  border-color: var(--cyan);
  font-weight: 700;
}

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

.page-faq [data-filter-item].is-hidden {
  display: none;
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  padding: clamp(22px, 3vw, 34px) 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-group:first-of-type {
  border-top: 0;
  padding-top: 0;
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 14px;
  align-items: baseline;
  margin-bottom: 18px;
}

.page-faq .faq-group__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.6vw, 40px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--flame);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(21px, 2.8vw, 31px);
  font-weight: 700;
  line-height: 1.16;
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-faq .faq-group__note {
  grid-column: 2;
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--steel);
}

@media (max-width: 560px) {
  .page-faq .faq-group__head {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-faq .faq-group__note {
    grid-column: 1;
  }
}

.page-faq .faq-lead {
  max-width: 66ch;
  margin: 0 0 18px;
  font-size: clamp(15px, 1.3vw, 16.5px);
  line-height: 1.8;
  color: var(--faq-muted);
}

/* ---------- 步骤 ---------- */
.page-faq .faq-steps {
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-step {
  position: relative;
  padding: 0 0 24px 52px;
}

.page-faq .faq-step:last-child {
  padding-bottom: 0;
}

.page-faq .faq-step::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 34px;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan), rgba(47, 240, 208, 0.1));
}

.page-faq .faq-step:last-child::before {
  display: none;
}

.page-faq .faq-step__node {
  position: absolute;
  left: 0;
  top: 0;
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--ink-900);
  background: var(--cyan);
}

.page-faq .faq-step__title {
  margin: 4px 0 8px;
  font-family: var(--font-display);
  font-size: clamp(17px, 1.8vw, 20px);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-faq .faq-step__body {
  max-width: 64ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--faq-muted);
}

.page-faq .faq-steps--check .faq-step__node {
  background: var(--amber);
}

.page-faq .faq-steps--check .faq-step::before {
  background: linear-gradient(180deg, var(--amber), rgba(255, 180, 60, 0.1));
}

.page-faq .faq-step.is-ping .faq-step__node {
  animation: faq-node-ping 0.62s var(--ease) 1;
}

@keyframes faq-node-ping {
  0% {
    box-shadow: 0 0 0 0 rgba(47, 240, 208, 0.55);
  }
  100% {
    box-shadow: 0 0 0 15px rgba(47, 240, 208, 0);
  }
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: 0 0 22px;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  background: var(--ink-700);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}

.page-faq .faq-figure--square {
  max-width: 520px;
}

.page-faq .faq-figure__cap {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.65;
  letter-spacing: 0.05em;
  color: var(--steel);
}

/* ---------- 提醒卡片 ---------- */
.page-faq .faq-alerts {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
}

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

.page-faq .faq-alert {
  padding: 16px 16px 18px;
  background: var(--ink-800);
  border-left: 3px solid var(--cyan);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
}

.page-faq .faq-alert:nth-child(2) {
  border-left-color: var(--amber);
}

.page-faq .faq-alert:nth-child(3) {
  border-left-color: var(--flame);
}

.page-faq .faq-alert__meta {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--steel);
}

.page-faq .faq-alert__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.03em;
  color: var(--white);
}

.page-faq .faq-alert__body {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--faq-muted);
}

/* ---------- 平板手势对照 ---------- */
.page-faq .faq-gestures {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 0 0 20px;
  padding: 0;
  background: var(--line);
  border: 1px solid var(--line);
}

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

.page-faq .faq-gesture {
  margin: 0;
  padding: 16px 18px;
  background: var(--ink-800);
}

.page-faq .faq-gesture__key {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-faq .faq-gesture__val {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--faq-muted);
}

.page-faq .faq-related {
  margin: 0 0 20px;
  padding: 12px 16px;
  background: var(--ink-800);
  border-left: 2px solid var(--cyan);
  font-size: 14px;
  line-height: 1.75;
  color: var(--faq-muted);
}

.page-faq .faq-related a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 240, 208, 0.45);
}

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

/* ---------- 伤停字段说明牌 ---------- */
.page-faq .faq-fields {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
}

@media (min-width: 780px) {
  .page-faq .faq-fields {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-faq .faq-field {
  padding: 15px 16px 17px;
  background: var(--ink-700);
  border-top: 2px solid var(--amber);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
}

.page-faq .faq-field__key {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--amber);
}

.page-faq .faq-field__val {
  display: block;
  font-size: 14px;
  line-height: 1.78;
  color: var(--faq-muted);
}

/* ---------- 回看两条路线 ---------- */
.page-faq .faq-routes {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin: 0 0 20px;
}

@media (min-width: 780px) {
  .page-faq .faq-routes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-faq .faq-route {
  padding: 17px 18px 19px;
  background: var(--ink-800);
  border-top: 2px solid var(--flame);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
}

.page-faq .faq-route:last-child {
  border-top-color: var(--cyan);
}

.page-faq .faq-route__key {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--steel);
}

.page-faq .faq-route__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.03em;
  color: var(--white);
}

.page-faq .faq-route__body {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--faq-muted);
}

.page-faq .faq-notes {
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-notes li {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr);
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--faq-muted);
}

.page-faq .faq-notes li:first-child {
  border-top: 1px solid var(--line);
}

.page-faq .faq-notes__k {
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--amber);
}

.page-faq .faq-notes a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 240, 208, 0.45);
}

@media (max-width: 560px) {
  .page-faq .faq-notes li {
    grid-template-columns: minmax(0, 1fr);
    gap: 2px;
  }
}

/* ---------- 问答折叠 ---------- */
.page-faq .faq-item {
  border-bottom: 1px dashed var(--line);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  min-height: 44px;
  padding: 15px 0;
  font-family: var(--font-body);
  font-size: clamp(15px, 1.4vw, 16.5px);
  font-weight: 600;
  line-height: 1.5;
  color: var(--white);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item__q::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--cyan);
  transition: transform 0.2s var(--ease);
}

.page-faq .faq-item[open] .faq-item__q::after {
  content: "−";
}

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

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

.page-faq .faq-item__a {
  max-width: 68ch;
  padding: 0 0 16px 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--faq-muted);
}

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

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

/* ---------- 收尾帮助条 ---------- */
.page-faq .faq-help {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-top: clamp(18px, 3vw, 28px);
  padding: clamp(18px, 3vw, 26px);
  background: linear-gradient(118deg, rgba(255, 90, 43, 0.16), rgba(11, 21, 36, 0.92) 62%);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}

.page-faq .faq-help__text {
  flex: 1 1 320px;
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--faq-muted);
}

/* ---------- 入场显现 ---------- */
.js-init .page-faq [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.32s var(--ease), transform 0.32s var(--ease);
}

.js-init .page-faq [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .js-init .page-faq [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .page-faq .faq-step.is-ping .faq-step__node {
    animation: none;
  }

  .page-faq .faq-item__q::after {
    transition: none;
  }
}
<<<END>>>