.page-faq {
  --faq-pad: clamp(20px, 5vw, 56px);
  --faq-max: 1120px;
  --faq-answer-indent: calc(2.5rem + 10px);
  display: block;
  background: var(--paper-000);
  color: var(--ink-900);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.75;
  padding-bottom: 72px;
}

.page-faq a {
  color: inherit;
}

.page-faq .mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0;
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb ol {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
  font-size: .75rem;
  letter-spacing: .08em;
  color: var(--slate-500);
}

.page-faq .breadcrumb li + li::before {
  content: "/";
  margin-right: 6px;
  color: var(--line-200);
}

.page-faq .breadcrumb a {
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .18s var(--ease);
}

.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  border-bottom-color: var(--mint-500);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  gap: 28px;
  max-width: var(--faq-max);
  margin-inline: auto;
  padding: 28px var(--faq-pad) 40px;
  border-bottom: 1px solid var(--line-200);
  background:
    linear-gradient(180deg, var(--mint-050) 0%, rgba(228, 248, 240, 0) 72%),
    var(--paper-000);
}

.page-faq .faq-hero__kicker {
  margin: 0 0 12px;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .16em;
  color: var(--mint-600);
}

.page-faq .faq-hero__title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.85rem, 6.4vw, 3.3rem);
  line-height: 1.14;
  letter-spacing: -.02em;
  max-width: 20ch;
}

.page-faq .faq-hero__lead {
  margin: 0 0 22px;
  max-width: 62ch;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--ink-700);
}

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

.page-faq .faq-jump a {
  display: inline-block;
  padding: 7px 14px;
  border: 1px solid var(--line-200);
  border-radius: 999px;
  background: var(--paper-100);
  font-size: .8125rem;
  text-decoration: none;
  color: var(--ink-700);
  transition: border-color .18s var(--ease), background-color .18s var(--ease), color .18s var(--ease);
}

.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  border-color: var(--mint-500);
  background: var(--mint-050);
  color: var(--ink-900);
}

/* 三步上手 */
.page-faq .faq-quick {
  padding: 20px;
  border: 1px solid var(--line-200);
  border-radius: var(--radius);
  background: var(--paper-100);
  box-shadow: var(--shadow-stack);
}

.page-faq .faq-quick__title {
  margin: 0 0 16px;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .14em;
  color: var(--slate-500);
}

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

.page-faq .faq-steps li {
  display: grid;
  grid-template-columns: 2.1rem minmax(0, 1fr);
  gap: 12px;
  padding-bottom: 16px;
  border-bottom: 1px dashed var(--line-200);
}

.page-faq .faq-steps li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-faq .step-num {
  padding-top: 3px;
  font-size: .8125rem;
  color: var(--mint-600);
}

.page-faq .faq-steps h3 {
  margin: 0 0 6px;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.5;
}

.page-faq .faq-steps p {
  margin: 0;
  font-size: .875rem;
  line-height: 1.7;
  color: var(--slate-500);
}

/* 首屏图 */
.page-faq .faq-hero__media {
  grid-column: 1 / -1;
  margin: 0;
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--line-200);
  border-radius: var(--radius);
  object-fit: cover;
  box-shadow: var(--shadow-stack);
}

/* ---------- 分类区块 ---------- */
.page-faq .faq-cat {
  max-width: var(--faq-max);
  margin-inline: auto;
  padding: 40px var(--faq-pad) 8px;
}

.page-faq .faq-cat + .faq-cat {
  border-top: 1px solid var(--line-200);
  margin-top: 36px;
}

.page-faq .faq-cat__head {
  display: grid;
  gap: 20px;
  align-items: center;
  margin-bottom: 24px;
}

.page-faq .faq-cat__index {
  margin: 0 0 8px;
  font-size: .8125rem;
  letter-spacing: .1em;
  color: var(--coral-500);
}

.page-faq .faq-cat__title {
  margin: 0 0 10px;
  font-size: 1.375rem;
  font-weight: 700;
  letter-spacing: -.01em;
}

.page-faq .faq-cat__intro {
  margin: 0;
  max-width: 64ch;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--slate-500);
}

.page-faq .faq-cat__media {
  margin: 0;
}

.page-faq .faq-cat__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--line-200);
  border-radius: var(--radius);
  background: var(--paper-100);
  object-fit: cover;
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-list {
  display: block;
}

.page-faq .qa {
  border-top: 1px solid var(--line-200);
  border-left: 2px solid transparent;
  transition: background-color .18s var(--ease), border-color .18s var(--ease);
}

.page-faq .faq-list .qa:last-child {
  border-bottom: 1px solid var(--line-200);
}

.page-faq .qa[open] {
  background: var(--mint-050);
  border-left-color: var(--mint-500);
}

.page-faq .qa > summary {
  display: grid;
  grid-template-columns: 2.5rem minmax(0, 1fr) 1.4rem;
  gap: 10px;
  align-items: start;
  padding: 16px;
  cursor: pointer;
  list-style: none;
}

.page-faq .qa > summary::-webkit-details-marker {
  display: none;
}

.page-faq .qa > summary:hover {
  background: var(--mint-050);
}

.page-faq .qa[open] > summary:hover {
  background: transparent;
}

.page-faq .qa > summary:focus-visible {
  outline: 2px solid var(--mint-500);
  outline-offset: -2px;
}

.page-faq .qa__no {
  padding-top: 3px;
  font-size: .8125rem;
  color: var(--slate-500);
}

.page-faq .qa__q {
  display: block;
  font-size: .9375rem;
  font-weight: 600;
  line-height: 1.6;
}

.page-faq .qa__brief {
  display: block;
  margin-top: 4px;
  font-size: .8125rem;
  line-height: 1.6;
  color: var(--slate-500);
}

.page-faq .qa[open] .qa__brief {
  display: none;
}

.page-faq .qa__flag {
  display: inline-block;
  margin-top: 8px;
  padding: 2px 8px 3px 9px;
  background: var(--amber-400);
  color: var(--ink-900);
  font-size: .6875rem;
  font-weight: 600;
  letter-spacing: .06em;
  clip-path: polygon(0 0, 100% 0, 100% 74%, 88% 100%, 0 100%);
}

.page-faq .qa__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.3rem;
  height: 1.3rem;
  border: 1px solid var(--line-200);
  border-radius: 50%;
  background: var(--paper-100);
  font-size: .875rem;
  line-height: 1;
  color: var(--ink-700);
  transition: transform .2s var(--ease), background-color .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .qa[open] .qa__mark {
  transform: rotate(45deg);
  background: var(--mint-500);
  border-color: var(--mint-500);
  color: var(--ink-900);
}

.page-faq .qa__a {
  padding: 0 16px 20px;
}

.page-faq .qa__a p {
  margin: 0 0 10px;
  font-size: .9375rem;
  line-height: 1.85;
  color: var(--ink-700);
}

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

/* ---------- 联系区块 ---------- */
.page-faq .faq-help {
  max-width: var(--faq-max);
  margin-inline: auto;
  padding: 48px var(--faq-pad) 0;
}

.page-faq .faq-help__inner {
  padding: 26px 22px 28px;
  border-radius: var(--radius-lg);
  background:
    linear-gradient(150deg, var(--ink-700) 0%, var(--night-800) 100%);
  color: var(--paper-000);
  box-shadow: var(--shadow-raised);
}

.page-faq .faq-help__kicker {
  margin: 0 0 10px;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .16em;
  color: var(--mint-500);
}

.page-faq .faq-help__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.4rem, 4.6vw, 2.1rem);
  line-height: 1.25;
  letter-spacing: -.015em;
}

.page-faq .faq-help__lead {
  margin: 0 0 22px;
  max-width: 66ch;
  font-size: .9375rem;
  line-height: 1.85;
  color: rgba(251, 249, 244, .82);
}

.page-faq .faq-help__grid {
  display: grid;
  gap: 14px;
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-help__grid li {
  padding: 12px 14px;
  border: 1px solid rgba(251, 249, 244, .18);
  border-radius: var(--radius-sm);
  background: rgba(251, 249, 244, .06);
}

.page-faq .faq-help__label {
  display: block;
  margin-bottom: 4px;
  font-size: .6875rem;
  font-weight: 500;
  letter-spacing: .12em;
  color: var(--mint-500);
}

.page-faq .faq-help__value {
  font-size: .875rem;
  word-break: break-word;
}

.page-faq .faq-help__note {
  margin: 0 0 14px;
  font-size: .8125rem;
  line-height: 1.75;
  color: rgba(251, 249, 244, .68);
}

.page-faq .faq-help__more {
  margin: 0;
  font-size: .875rem;
  line-height: 1.8;
  color: rgba(251, 249, 244, .82);
}

.page-faq .faq-help__more a {
  color: var(--mint-500);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 211, 164, .5);
}

.page-faq .faq-help__more a:hover,
.page-faq .faq-help__more a:focus-visible {
  border-bottom-color: var(--mint-500);
}

/* ---------- 页尾动作 ---------- */
.page-faq .faq-foot {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  max-width: var(--faq-max);
  margin-inline: auto;
  padding: 28px var(--faq-pad) 0;
  font-size: .8125rem;
}

.page-faq .faq-top,
.page-faq .faq-home {
  text-decoration: none;
  color: var(--slate-500);
  border-bottom: 1px solid var(--line-200);
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.page-faq .faq-top::before {
  content: "↑";
  margin-right: 6px;
}

.page-faq .faq-top:hover,
.page-faq .faq-home:hover,
.page-faq .faq-top:focus-visible,
.page-faq .faq-home:focus-visible {
  color: var(--ink-900);
  border-bottom-color: var(--mint-500);
}

/* ---------- 断点 ---------- */
@media (min-width: 768px) {
  .page-faq .faq-hero {
    padding-top: 40px;
    padding-bottom: 52px;
    gap: 34px;
  }

  .page-faq .faq-quick {
    padding: 24px 26px;
  }

  .page-faq .faq-cat__head {
    grid-template-columns: minmax(0, 1fr) minmax(0, .62fr);
    gap: 32px;
  }

  .page-faq .faq-cat__title {
    font-size: 1.625rem;
  }

  .page-faq .qa > summary {
    padding: 18px 20px;
  }

  .page-faq .qa__a {
    padding-left: calc(20px + var(--faq-answer-indent));
    padding-right: 48px;
    padding-bottom: 22px;
  }

  .page-faq .faq-help__inner {
    padding: 34px 34px 36px;
  }

  .page-faq .faq-help__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }
}

@media (min-width: 1024px) {
  .page-faq {
    padding-bottom: 96px;
  }

  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.1fr) minmax(320px, .9fr);
    align-items: start;
    gap: 48px;
    padding-top: 52px;
    padding-bottom: 60px;
  }

  .page-faq .faq-hero__title {
    max-width: 18ch;
  }

  .page-faq .faq-hero__media {
    margin-top: 8px;
  }

  .page-faq .faq-quick {
    align-self: start;
    position: relative;
  }

  .page-faq .faq-quick::before {
    content: "";
    position: absolute;
    inset: -8px -8px auto auto;
    width: 52px;
    height: 52px;
    border-top: 2px solid var(--amber-400);
    border-right: 2px solid var(--amber-400);
    border-radius: 0 var(--radius) 0 0;
  }

  .page-faq .faq-cat {
    padding-top: 56px;
  }

  .page-faq .faq-cat + .faq-cat {
    margin-top: 48px;
  }

  .page-faq .qa > summary {
    padding: 20px 24px;
  }

  .page-faq .qa__a {
    padding-left: calc(24px + var(--faq-answer-indent));
  }

  .page-faq .faq-help {
    padding-top: 64px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .qa__mark,
  .page-faq .faq-jump a,
  .page-faq .breadcrumb a,
  .page-faq .faq-top,
  .page-faq .faq-home {
    transition: none;
  }

  .page-faq .qa[open] .qa__mark {
    transform: none;
  }
}