.page-faq {
  --faq-gap: clamp(14px, 2vw, 24px);
  background:
    radial-gradient(1020px 480px at 84% -10%, rgba(53, 242, 200, .10), transparent 60%),
    radial-gradient(680px 380px at 2% 20%, rgba(31, 168, 138, .08), transparent 64%),
    var(--ink-900);
  color: var(--paper);
  font-family: var(--font-sans);
  overflow-x: clip;
}

.page-faq .faq-top {
  padding: clamp(18px, 3vw, 32px) 0 0;
}

.page-faq .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--muted);
}

.page-faq .breadcrumbs a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}

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

.page-faq .breadcrumbs [aria-current="page"] {
  color: var(--paper-2);
}

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

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  padding: clamp(26px, 5vw, 62px) 0 clamp(28px, 5vw, 54px);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 46px);
}

.page-faq .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .eyebrow::before {
  content: "";
  width: 34px;
  height: 2px;
  background: var(--cyan);
}

.page-faq h1 {
  margin: 18px 0 18px;
  font-size: clamp(30px, 7vw, 60px);
  line-height: 1.1;
  letter-spacing: .01em;
  font-weight: 800;
  color: var(--paper);
  text-wrap: balance;
}

.page-faq .faq-hero .lede {
  max-width: 62ch;
  margin: 0 0 26px;
  font-size: clamp(15.5px, 1.5vw, 18px);
  line-height: 1.78;
  color: var(--paper-2);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-hero__aside {
  padding: 22px 22px 20px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(18, 61, 48, .62), rgba(11, 43, 34, .34));
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}

.page-faq .faq-aside__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: .2em;
  color: var(--cyan-2);
}

.page-faq .faq-aside__list {
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-faq .faq-aside__list a {
  display: block;
  padding-left: 16px;
  position: relative;
  font-size: 15px;
  line-height: 1.6;
  color: var(--paper);
  text-decoration: none;
  transition: color 160ms var(--ease);
}

.page-faq .faq-aside__list a::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 7px;
  height: 2px;
  background: var(--cyan-2);
  transition: width 160ms var(--ease), background 160ms var(--ease);
}

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

.page-faq .faq-aside__list a:hover::before,
.page-faq .faq-aside__list a:focus-visible::before {
  width: 12px;
  background: var(--cyan);
}

.page-faq .faq-aside__meta {
  margin: 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 热门问题 ---------- */

.page-faq .faq-quick {
  padding: clamp(8px, 2vw, 20px) 0 clamp(28px, 5vw, 52px);
}

.page-faq .faq-quick__head {
  margin-bottom: clamp(18px, 3vw, 28px);
}

.page-faq .faq-quick__head h2 {
  margin: 0 0 8px;
  font-size: clamp(21px, 3vw, 30px);
  line-height: 1.3;
  font-weight: 700;
  color: var(--paper);
}

.page-faq .faq-quick__head p {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-quick__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-faq .faq-quick__card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
  padding: 16px 18px 15px;
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(18, 61, 48, .62), rgba(5, 20, 15, .52));
  color: var(--paper);
  text-decoration: none;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
  transition: border-color 180ms var(--ease), background 180ms var(--ease);
}

.page-faq .faq-quick__card:hover,
.page-faq .faq-quick__card:focus-visible {
  border-color: var(--cyan-2);
  background: linear-gradient(160deg, rgba(31, 168, 138, .3), rgba(5, 20, 15, .62));
}

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

.page-faq .faq-quick__tag {
  pointer-events: none;
}

.page-faq .faq-quick__q {
  font-size: 16.5px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--paper);
}

.page-faq .faq-quick__go {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--cyan-2);
}

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

/* ---------- 图片 ---------- */

.page-faq .faq-figure {
  margin: 0 0 clamp(30px, 5vw, 56px);
}

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

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
  max-width: 76ch;
}

/* ---------- 主体 ---------- */

.page-faq .faq-body {
  padding: clamp(28px, 4vw, 52px) 0 0;
}

.page-faq .faq-body__head {
  max-width: 66ch;
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-faq .faq-body__head h2 {
  margin: 14px 0 10px;
  font-size: clamp(22px, 3.4vw, 36px);
  line-height: 1.26;
  font-weight: 700;
  color: var(--paper);
}

.page-faq .faq-body__lede {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--paper-2);
}

.page-faq .faq-rail {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0 0 clamp(20px, 3vw, 32px);
}

.page-faq .faq-rail__btn {
  appearance: none;
  -webkit-appearance: none;
  padding: 9px 16px;
  border: 1px solid var(--line);
  background: rgba(18, 61, 48, .5);
  color: var(--paper-2);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.4;
  cursor: pointer;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 9px), calc(100% - 9px) 100%, 0 100%);
  transition: background 180ms var(--ease), color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-faq .faq-rail__btn:hover {
  border-color: var(--cyan-2);
  color: var(--paper);
}

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

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

.page-faq .faq-group {
  padding: clamp(26px, 4vw, 46px) 0;
  border-top: 1px solid var(--line);
  scroll-margin-top: 96px;
}

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

.page-faq .faq-group[data-filtered-out],
.page-faq .faq-group__items [data-filtered-out] {
  display: none;
}

.page-faq .faq-group__head {
  margin-bottom: clamp(16px, 2.4vw, 22px);
}

.page-faq .faq-group__num {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .3em;
  color: var(--cyan-2);
}

.page-faq .faq-group__head h3 {
  margin: 0 0 10px;
  font-size: clamp(19px, 2.6vw, 27px);
  line-height: 1.32;
  font-weight: 700;
  color: var(--paper);
}

.page-faq .faq-group__head p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--muted);
  max-width: 40ch;
}

.page-faq .faq-group__main {
  display: flex;
  flex-direction: column;
  gap: clamp(18px, 3vw, 28px);
}

.page-faq .faq-group__items {
  display: grid;
  gap: 10px;
}

/* ---------- 手风琴 ---------- */

.page-faq .accordion__item {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(11, 43, 34, .74), rgba(5, 20, 15, .74));
  scroll-margin-top: 110px;
  transition: border-color 180ms var(--ease);
}

.page-faq .accordion__item[open] {
  border-color: var(--cyan-2);
}

.page-faq .accordion__trigger {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-size: clamp(15.5px, 1.5vw, 17px);
  font-weight: 600;
  line-height: 1.55;
  color: var(--paper);
  transition: color 160ms var(--ease);
}

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

.page-faq .accordion__trigger::before {
  content: "+";
  flex: 0 0 auto;
  width: 20px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1.35;
  color: var(--cyan);
}

.page-faq .accordion__item[open] > .accordion__trigger::before {
  content: "–";
}

.page-faq .accordion__item[open] > .accordion__trigger {
  color: var(--cyan);
  border-bottom: 1px solid var(--line);
}

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

.page-faq .accordion__trigger:focus-visible {
  outline: 2px solid var(--yellow);
  outline-offset: -3px;
}

.page-faq .accordion__panel {
  padding: 16px 18px 20px 52px;
}

.page-faq .accordion__panel p {
  margin: 0 0 10px;
  max-width: 72ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--paper-2);
}

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

.page-faq .accordion__panel a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 242, 200, .42);
}

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

.page-faq .num {
  font-family: var(--font-mono);
  font-size: 1.02em;
  color: var(--cyan);
}

/* ---------- 自查顺序横条 ---------- */

.page-faq .faq-steps {
  margin: clamp(34px, 5vw, 68px) 0 0;
  padding: clamp(26px, 4vw, 44px) 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(96deg, rgba(31, 168, 138, .22), rgba(53, 242, 200, .06) 54%, transparent);
}

.page-faq .faq-steps__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 3vw, 30px);
}

.page-faq .faq-steps__item {
  display: grid;
  gap: 8px;
  padding-left: 16px;
  border-left: 2px solid var(--cyan-2);
}

.page-faq .faq-steps__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .3em;
  color: var(--cyan);
}

.page-faq .faq-steps__title {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--paper);
}

.page-faq .faq-steps__desc {
  font-size: 14px;
  line-height: 1.72;
  color: var(--paper-2);
  max-width: 40ch;
}

/* ---------- 联系 ---------- */

.page-faq .faq-help {
  padding: clamp(34px, 5vw, 76px) 0 clamp(44px, 7vw, 96px);
}

.page-faq .faq-help__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 52px);
}

.page-faq .faq-help__intro h2 {
  margin: 14px 0 14px;
  font-size: clamp(21px, 3.2vw, 34px);
  line-height: 1.28;
  font-weight: 700;
  color: var(--paper);
}

.page-faq .faq-help__intro p {
  margin: 0 0 22px;
  max-width: 56ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--paper-2);
}

.page-faq .faq-help__channels {
  margin: 0;
  border: 1px solid var(--line);
  background: rgba(11, 43, 34, .5);
}

.page-faq .faq-help__row {
  display: grid;
  gap: 5px;
  padding: 15px 18px;
  border-bottom: 1px solid var(--line);
}

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

.page-faq .faq-help__row dt {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .18em;
  color: var(--muted);
}

.page-faq .faq-help__row dd {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.65;
  color: var(--paper);
}

.page-faq .faq-help__val--mono {
  font-family: var(--font-mono);
  letter-spacing: .02em;
  word-break: break-word;
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-faq .faq-quick__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(258px, .8fr);
    align-items: end;
  }

  .page-faq .faq-help__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(300px, .85fr);
    align-items: start;
  }

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

@media (min-width: 1000px) {
  .page-faq .faq-group {
    display: grid;
    grid-template-columns: minmax(232px, .82fr) minmax(0, 2.1fr);
    gap: clamp(26px, 4vw, 56px);
    align-items: start;
  }

  .page-faq .faq-group__head {
    position: sticky;
    top: 104px;
    margin-bottom: 0;
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-quick__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 520px) {
  .page-faq .accordion__panel {
    padding-left: 18px;
  }

  .page-faq .faq-hero__aside {
    padding: 18px 16px 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq * {
    transition-duration: 1ms !important;
    animation-duration: 1ms !important;
  }
}