.page-faq {
  --faq-panel: rgba(245, 241, 232, 0.05);
  --faq-line-paper: rgba(26, 26, 26, 0.14);
  background: var(--indigo);
  color: var(--paper);
}

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

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 22px 0 42px;
  background:
    radial-gradient(130% 100% at 88% -15%, rgba(91, 140, 110, 0.42), transparent 58%),
    radial-gradient(90% 70% at -10% 110%, rgba(46, 111, 142, 0.32), transparent 62%),
    var(--midnight);
  border-bottom: 1px solid var(--line-on-dark);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(245, 241, 232, 0.14) 1px, transparent 1.2px);
  background-size: 10px 10px;
  opacity: 0.35;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 78%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 78%);
}

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

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

.page-faq .faq-hero__grid {
  display: grid;
  gap: 26px;
}

.page-faq .faq-hero__eyebrow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
}

.page-faq .faq-hero__eyebrow .mono {
  font-size: 12.5px;
  letter-spacing: 0.14em;
  color: rgba(245, 241, 232, 0.6);
}

.page-faq .faq-hero h1 {
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-size: clamp(27px, 7.2vw, 52px);
  line-height: 1.16;
  letter-spacing: -0.012em;
  color: var(--paper);
  text-wrap: balance;
}

.page-faq .faq-hero .lead {
  max-width: 46ch;
  margin: 0;
  font-size: clamp(15px, 3.7vw, 17px);
  line-height: 1.85;
  color: rgba(245, 241, 232, 0.78);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

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

.page-faq .faq-hero__tiles > :nth-child(1),
.page-faq .faq-hero__tiles > :nth-child(4) {
  grid-column: span 2;
}

.page-faq .faq-tile {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 15px 16px;
  border: 1px solid var(--line-on-dark);
  border-left: 2px solid var(--jade);
  border-radius: var(--radius);
  background: var(--faq-panel);
  color: var(--paper);
  text-decoration: none;
  transition: border-color 0.25s var(--ease), background-color 0.25s var(--ease), transform 0.25s var(--ease);
}

.page-faq .faq-tile:hover,
.page-faq .faq-tile:focus-visible {
  border-color: var(--line-on-dark-strong);
  border-left-color: var(--copper);
  background: rgba(245, 241, 232, 0.09);
  transform: translateX(3px);
}

.page-faq .faq-tile__num {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--copper);
}

.page-faq .faq-tile__name {
  font-family: var(--font-head);
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.4;
}

.page-faq .faq-tile__meta {
  font-size: 13px;
  line-height: 1.7;
  color: rgba(245, 241, 232, 0.62);
}

/* ---------- 通用 ---------- */
.page-faq .section {
  padding: 46px 0;
}

.page-faq .section-head {
  margin-bottom: 24px;
}

.page-faq .section-head__num {
  color: var(--copper);
}

.page-faq .section-head__title {
  text-wrap: balance;
}

/* ---------- 变更摘要 ---------- */
.page-faq .change-list {
  list-style: none;
  counter-reset: chg;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--faq-line-paper);
}

.page-faq .change-list > li {
  counter-increment: chg;
  position: relative;
  padding: 18px 0 18px 46px;
  border-bottom: 1px solid var(--faq-line-paper);
}

.page-faq .change-list > li::before {
  content: counter(chg, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 21px;
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.06em;
  color: var(--copper);
}

.page-faq .change-list h3 {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-size: 17.5px;
  line-height: 1.5;
  color: var(--ink);
}

.page-faq .change-list__text {
  max-width: 68ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(26, 26, 26, 0.76);
}

.page-faq .change-note {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin: 20px 0 0;
  padding: 12px 14px;
  background: rgba(194, 69, 45, 0.07);
  border-left: 2px solid var(--cinnabar);
  font-size: 14px;
  line-height: 1.75;
  color: rgba(26, 26, 26, 0.8);
}

.page-faq .change-note__dot {
  flex: none;
  width: 7px;
  height: 7px;
  margin-top: 8px;
  border-radius: 50%;
  background: var(--cinnabar);
}

/* ---------- 注册指引 ---------- */
.page-faq .reg-figure {
  margin: 0 0 24px;
}

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

.page-faq .reg-card {
  padding: 22px 18px 20px;
  background: var(--faq-panel);
  border: 1px solid var(--line-on-dark);
  border-top: 3px solid var(--jade);
  border-radius: var(--radius);
}

.page-faq .reg-card--personal {
  border-top-color: var(--copper);
}

.page-faq .reg-card__tag {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--jade);
}

.page-faq .reg-card--personal .reg-card__tag {
  color: var(--copper);
}

.page-faq .reg-card__title {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 19px;
  line-height: 1.45;
  color: var(--paper);
}

.page-faq .reg-card__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(245, 241, 232, 0.64);
}

.page-faq .step-list {
  list-style: none;
  counter-reset: stp;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .step-list > li {
  counter-increment: stp;
  position: relative;
  padding-left: 36px;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(245, 241, 232, 0.8);
}

.page-faq .step-list > li::before {
  content: counter(stp, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 3px;
  padding-bottom: 1px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--jade);
  border-bottom: 1px solid rgba(91, 140, 110, 0.5);
}

.page-faq .reg-card--personal .step-list > li::before {
  color: var(--copper);
  border-bottom-color: rgba(197, 139, 74, 0.5);
}

.page-faq .reg-foot {
  margin: 22px 0 0;
  padding-top: 18px;
  border-top: 1px dashed var(--line-on-dark);
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(245, 241, 232, 0.72);
}

/* ---------- 电脑端对照 ---------- */
.page-faq .desktop-shot {
  margin: 0 0 24px;
}

.page-faq .map-list {
  border-top: 1px solid var(--faq-line-paper);
  border-bottom: 1px solid var(--faq-line-paper);
}

.page-faq .map-row {
  border-bottom: 1px solid var(--faq-line-paper);
}

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

.page-faq .map-row:nth-child(even) {
  background: rgba(26, 26, 26, 0.028);
}

.page-faq .map-row[open] {
  background: rgba(46, 111, 142, 0.07);
}

.page-faq .map-row__head {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) 22px;
  grid-template-areas:
    "no path caret"
    "no title caret";
  align-items: start;
  gap: 0 10px;
  padding: 14px 12px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .map-row__no {
  grid-area: no;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--copper);
  align-self: center;
}

.page-faq .map-row__path {
  grid-area: path;
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--screen);
  overflow-wrap: anywhere;
}

.page-faq .map-row__title {
  grid-area: title;
  margin-top: 4px;
  font-family: var(--font-head);
  font-size: 16px;
  line-height: 1.5;
  color: var(--ink);
}

.page-faq .map-row__caret {
  grid-area: caret;
  justify-self: end;
  width: 9px;
  height: 9px;
  margin-top: 8px;
  border-right: 1.5px solid var(--screen);
  border-bottom: 1.5px solid var(--screen);
  transform: rotate(45deg);
  transition: transform 0.25s var(--ease);
}

.page-faq .map-row[open] > .map-row__head .map-row__caret {
  transform: rotate(225deg);
}

.page-faq .map-row__head:hover .map-row__title {
  color: var(--screen);
}

.page-faq .map-row__body {
  display: grid;
  gap: 10px;
  padding: 0 12px 18px 44px;
}

.page-faq .map-row__body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.82;
  color: rgba(26, 26, 26, 0.78);
}

.page-faq .map-row__body a {
  color: var(--screen);
  text-decoration: none;
  border-bottom: 1px solid rgba(46, 111, 142, 0.35);
}

.page-faq .map-row__body a:hover {
  border-bottom-color: var(--screen);
}

.page-faq .map-row__steps {
  padding: 9px 11px;
  font-size: 12.5px;
  line-height: 1.8;
  color: rgba(26, 26, 26, 0.7);
  background: rgba(46, 111, 142, 0.07);
  border-left: 2px solid rgba(46, 111, 142, 0.45);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.page-faq .map-copy {
  justify-self: start;
  padding: 6px 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--jade);
  background: transparent;
  border: 1px solid rgba(91, 140, 110, 0.45);
  border-radius: var(--radius);
  cursor: pointer;
  transition: background-color 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .map-copy:hover,
.page-faq .map-copy:focus-visible {
  background: var(--jade);
  border-color: var(--jade);
  color: var(--paper);
}

/* ---------- 常见问题 ---------- */
.page-faq .filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
}

.page-faq .filter-bar__label {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: rgba(245, 241, 232, 0.55);
}

.page-faq .filter-chip {
  padding: 6px 13px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: rgba(245, 241, 232, 0.78);
  background: transparent;
  border: 1px solid var(--line-on-dark);
  border-radius: 999px;
  cursor: pointer;
  transition: background-color 0.2s var(--ease), border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-faq .filter-chip:hover,
.page-faq .filter-chip:focus-visible {
  border-color: var(--jade);
  color: var(--paper);
}

.page-faq .filter-chip.is-active {
  background: var(--jade);
  border-color: var(--jade);
  color: var(--midnight);
}

.page-faq .filter-bar__status {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  color: rgba(245, 241, 232, 0.5);
}

.page-faq .faq-list {
  border-top: 1px solid var(--line-on-dark);
}

.page-faq .faq__item {
  border-bottom: 1px solid var(--line-on-dark);
}

.page-faq .faq__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 2px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-size: 16px;
  line-height: 1.6;
  color: var(--paper);
}

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

.page-faq .faq__q::before {
  content: "Q";
  flex: none;
  width: 22px;
  height: 22px;
  margin-top: 1px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 22px;
  text-align: center;
  color: var(--midnight);
  background: var(--copper);
  border-radius: 2px;
}

.page-faq .faq__q::after {
  content: "";
  flex: none;
  width: 9px;
  height: 9px;
  margin: 8px 2px 0 auto;
  border-right: 1.5px solid var(--copper);
  border-bottom: 1.5px solid var(--copper);
  transform: rotate(45deg);
  transition: transform 0.25s var(--ease);
}

.page-faq .faq__item[open] .faq__q::after {
  transform: rotate(225deg);
}

.page-faq .faq__q:hover {
  color: var(--screen-soft);
}

.page-faq .faq__a {
  padding: 0 2px 18px 34px;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(245, 241, 232, 0.76);
}

.page-faq .faq__a p {
  margin: 0;
  max-width: 72ch;
}

/* ---------- 检索与收藏 ---------- */
.page-faq .tip-grid {
  display: grid;
  gap: 14px;
}

.page-faq .tip-card {
  padding: 20px 18px;
  background: var(--paper-2);
  border: 1px solid var(--faq-line-paper);
  border-radius: var(--radius);
  box-shadow: 3px 3px 0 rgba(26, 26, 26, 0.06);
}

.page-faq .tip-card__num {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--copper);
}

.page-faq .tip-card__title {
  margin: 10px 0 8px;
  font-family: var(--font-head);
  font-size: 17px;
  line-height: 1.5;
  color: var(--ink);
}

.page-faq .tip-card__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.82;
  color: rgba(26, 26, 26, 0.78);
}

.page-faq .tip-card__codes {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 14px 0 0;
}

.page-faq .tip-card__codes .mono {
  padding: 3px 8px;
  font-size: 12px;
  color: var(--screen);
  background: rgba(46, 111, 142, 0.09);
  border: 1px dashed rgba(46, 111, 142, 0.38);
  border-radius: 2px;
}

.page-faq .faq-paths {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 18px;
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px solid var(--faq-line-paper);
}

.page-faq .faq-paths__label {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: rgba(26, 26, 26, 0.5);
}

.page-faq .faq-paths__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-paths__list a {
  padding-bottom: 1px;
  font-size: 14px;
  color: var(--screen);
  text-decoration: none;
  border-bottom: 1px solid rgba(46, 111, 142, 0.35);
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero {
    padding: 26px 0 56px;
  }

  .page-faq .section {
    padding: 60px 0;
  }

  .page-faq .change-list > li {
    padding-left: 62px;
  }

  .page-faq .change-list > li::before {
    top: 22px;
    font-size: 16px;
  }

  .page-faq .map-row__head {
    grid-template-columns: 46px minmax(170px, 250px) minmax(0, 1fr) 26px;
    grid-template-areas: "no path title caret";
    align-items: center;
    padding: 16px 14px;
  }

  .page-faq .map-row__title {
    margin-top: 0;
  }

  .page-faq .map-row__caret {
    margin-top: 0;
  }

  .page-faq .map-row__body {
    padding: 0 14px 20px 60px;
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    align-items: start;
    gap: 44px;
  }

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

  .page-faq .faq-hero__tiles > :nth-child(1) {
    grid-column: span 2;
  }

  .page-faq .faq-hero__tiles > :nth-child(2) {
    grid-column: span 1;
  }

  .page-faq .faq-hero__tiles > :nth-child(3) {
    grid-column: span 1;
  }

  .page-faq .faq-hero__tiles > :nth-child(4) {
    grid-column: span 2;
  }
}

@media (min-width: 860px) {
  .page-faq .reg-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
  }
}

@media (min-width: 820px) {
  .page-faq .tip-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-faq .tip-grid > :nth-child(2) {
    transform: translateY(18px);
  }

  .page-faq .section:has(.tip-grid) {
    padding-bottom: 86px;
  }
}

@media (max-width: 480px) {
  .page-faq .faq-hero__actions .btn {
    width: 100%;
    text-align: center;
  }

  .page-faq .filter-bar__status {
    margin-left: 0;
    flex-basis: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-tile,
  .page-faq .map-copy,
  .page-faq .filter-chip,
  .page-faq .map-row__caret,
  .page-faq .faq__q::after {
    transition: none;
  }

  .page-faq .faq-tile:hover {
    transform: none;
  }
}