/* ===== 常见问题页 · page-faq ===== */

.page-faq {
  --faq-index-w: 15rem;
  display: block;
  background: var(--paper);
  color: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(20px, 3vw, 34px) 0 clamp(32px, 5vw, 56px);
  background:
    radial-gradient(circle at 10% 6%, rgba(243, 199, 126, 0.34), transparent 44%),
    radial-gradient(circle at 92% 0%, rgba(78, 107, 104, 0.12), transparent 38%),
    var(--paper);
  border-bottom: 1px solid var(--route);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(24px, 3.5vw, 48px);
  margin-top: clamp(20px, 3vw, 34px);
  align-items: start;
}

.page-faq .faq-hero__lead > .mono-label {
  display: inline-block;
  padding: 5px 12px;
  border: 1px dashed var(--apricot);
  border-radius: var(--radius-pill);
  color: var(--apricot-deep);
  background: rgba(255, 252, 245, 0.72);
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-sans);
  font-size: clamp(2.1rem, 4vw, 3.4rem);
  font-weight: 300;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--ink-green);
  text-wrap: balance;
}

.page-faq .faq-hero__lead .lede {
  margin: 18px 0 0;
  max-width: 42ch;
  font-size: var(--fs-base);
  line-height: 1.75;
  color: var(--slate);
}

.page-faq .faq-hero__media {
  margin: 0;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

/* ---------- 关键词过滤 ---------- */
.page-faq .faq-filter {
  margin-top: clamp(22px, 3vw, 30px);
  padding: 16px 18px;
  background: var(--card);
  border: 1px solid var(--route);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}

.page-faq .faq-filter__label {
  display: block;
  color: var(--ink-green);
  margin-bottom: 10px;
}

.page-faq .faq-filter__field {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 9px;
  border-bottom: 1px solid var(--route);
}

.page-faq .faq-filter__icon {
  position: relative;
  flex: none;
  width: 14px;
  height: 14px;
  border: 1.5px solid var(--apricot-deep);
  border-radius: 50%;
}

.page-faq .faq-filter__icon::after {
  content: "";
  position: absolute;
  right: -5px;
  bottom: -3px;
  width: 6px;
  height: 1.5px;
  background: var(--apricot-deep);
  transform: rotate(45deg);
  transform-origin: left center;
}

.page-faq .faq-filter input {
  flex: 1 1 auto;
  min-width: 0;
  border: 0;
  background: transparent;
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: 1.5;
  color: var(--ink);
}

.page-faq .faq-filter input::placeholder {
  color: var(--route);
}

.page-faq .faq-filter input:focus {
  outline: 2px solid var(--apricot);
  outline-offset: 3px;
  border-radius: 4px;
}

.page-faq .faq-filter input::-webkit-search-cancel-button {
  appearance: none;
}

.page-faq .faq-filter__hint {
  margin: 10px 0 0;
  color: var(--slate);
}

/* ---------- 主体分栏 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
  padding-block: clamp(30px, 4.5vw, 58px) clamp(12px, 2vw, 24px);
  align-items: start;
}

/* ---------- 左侧问题索引 ---------- */
.page-faq .faq-index__inner {
  padding: 16px 14px;
  background: var(--card);
  border: 1px solid var(--route);
  border-radius: var(--radius-md);
}

.page-faq .faq-index__inner > .mono-label {
  display: block;
  color: var(--apricot-deep);
  padding-left: 8px;
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
}

.page-faq .faq-index__list a {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 9px;
  align-items: baseline;
  padding: 7px 8px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--pine);
  font-size: var(--fs-sm);
  line-height: 1.45;
  transition: background-color 0.12s var(--ease), color 0.12s var(--ease);
}

.page-faq .faq-index__list a .mono-label {
  color: var(--apricot-deep);
  font-size: var(--fs-xs);
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  background: rgba(217, 130, 43, 0.13);
  color: var(--apricot-deep);
  outline: none;
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  padding-top: clamp(28px, 4vw, 44px);
  margin-top: clamp(28px, 4vw, 44px);
  border-top: 1px solid var(--route);
}

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

.page-faq .faq-group__head {
  max-width: 60ch;
  margin-bottom: clamp(16px, 2.4vw, 24px);
}

.page-faq .faq-group__head > .mono-label {
  display: block;
  color: var(--apricot-deep);
  margin-bottom: 8px;
}

.page-faq .faq-group__head h2 {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--fs-md);
  font-weight: 500;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--ink-green);
}

.page-faq .faq-group__note {
  margin: 10px 0 0;
  font-size: var(--fs-sm);
  line-height: 1.7;
  color: var(--slate);
}

.page-faq .faq-group__media {
  margin: 0 0 clamp(18px, 2.6vw, 26px);
}

/* ---------- 问答折叠项 ---------- */
.page-faq .qa {
  border: 1px solid var(--route);
  border-radius: var(--radius-md);
  background: var(--card);
  margin-bottom: 10px;
  overflow: hidden;
  transition: border-color 0.18s var(--ease), box-shadow 0.18s var(--ease), background-color 0.18s var(--ease);
}

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

.page-faq .qa[open] {
  border-color: var(--apricot);
  background: var(--paper);
  box-shadow: var(--shadow-card);
}

.page-faq .qa > summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: start;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-size: var(--fs-base);
  line-height: 1.5;
  color: var(--ink-green);
  transition: background-color 0.12s var(--ease);
}

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

.page-faq .qa > summary::marker {
  content: "";
}

.page-faq .qa > summary:hover {
  background: rgba(217, 130, 43, 0.07);
}

.page-faq .qa > summary:focus-visible {
  outline: 2px solid var(--apricot);
  outline-offset: -3px;
}

.page-faq .qa__num {
  padding-top: 5px;
  color: var(--apricot-deep);
  font-size: var(--fs-xs);
  white-space: nowrap;
}

.page-faq .qa__q {
  font-weight: 500;
}

.page-faq .qa__marker {
  position: relative;
  flex: none;
  width: 24px;
  height: 24px;
  margin-top: 2px;
  border: 1px solid var(--route);
  border-radius: var(--radius-pill);
  background: var(--paper);
  transition: border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.page-faq .qa__marker::before,
.page-faq .qa__marker::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--slate);
  transform: translate(-50%, -50%);
  transition: transform 0.22s var(--ease), background-color 0.18s var(--ease);
}

.page-faq .qa__marker::before {
  width: 10px;
  height: 1.5px;
}

.page-faq .qa__marker::after {
  width: 1.5px;
  height: 10px;
}

.page-faq .qa[open] .qa__marker {
  border-color: var(--apricot);
  background: var(--apricot-sand);
}

.page-faq .qa[open] .qa__marker::before {
  background: var(--apricot-deep);
}

.page-faq .qa[open] .qa__marker::after {
  transform: translate(-50%, -50%) scaleY(0);
}

.page-faq .qa__body {
  padding: 0 18px 20px;
  font-size: var(--fs-base);
  line-height: 1.75;
  color: var(--slate);
}

.page-faq .qa__body p {
  margin: 0 0 10px;
  max-width: 68ch;
}

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

.page-faq .qa__vote {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
  padding: 6px 14px;
  border: 1px solid var(--route);
  border-radius: var(--radius-pill);
  font-size: var(--fs-sm);
  color: var(--slate);
  cursor: pointer;
  transition: border-color 0.12s var(--ease), color 0.12s var(--ease), background-color 0.12s var(--ease);
}

.page-faq .qa__vote:hover {
  border-color: var(--apricot);
  color: var(--apricot-deep);
  background: rgba(243, 199, 126, 0.24);
}

.page-faq .qa__vote input {
  margin: 0;
  accent-color: var(--apricot);
}

/* ---------- 收尾深色区 ---------- */
.page-faq .faq-next {
  margin-top: clamp(32px, 5vw, 56px);
  padding: clamp(38px, 6vw, 72px) 0 clamp(46px, 7vw, 84px);
  background:
    radial-gradient(circle at 88% 12%, rgba(217, 130, 43, 0.22), transparent 46%),
    var(--ink-green);
  color: var(--on-ink);
}

.page-faq .faq-next__head {
  max-width: 62ch;
}

.page-faq .faq-next__head > .mono-label {
  display: block;
  color: var(--apricot-sand);
  margin-bottom: 10px;
}

.page-faq .faq-next__head h2 {
  margin: 0;
  font-family: var(--font-sans);
  font-size: clamp(1.5rem, 2.8vw, 2.1rem);
  font-weight: 400;
  line-height: 1.25;
  letter-spacing: -0.015em;
  color: var(--paper);
}

.page-faq .faq-next__head p {
  margin: 12px 0 0;
  font-size: var(--fs-base);
  line-height: 1.7;
  color: rgba(230, 223, 208, 0.82);
}

.page-faq .faq-next__grid {
  display: grid;
  gap: 14px;
  margin-top: clamp(22px, 3vw, 34px);
}

.page-faq .faq-next__card {
  display: block;
  padding: 20px;
  border: 1px solid rgba(230, 223, 208, 0.22);
  border-radius: var(--radius-md);
  background: rgba(230, 223, 208, 0.05);
  color: var(--on-ink);
  text-decoration: none;
  transition: transform 0.18s var(--ease), border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.page-faq .faq-next__card:hover,
.page-faq .faq-next__card:focus-visible {
  transform: translateY(-3px);
  border-color: var(--apricot-sand);
  background: rgba(217, 130, 43, 0.16);
  outline: none;
}

.page-faq .faq-next__card .mono-label {
  color: var(--apricot-sand);
}

.page-faq .faq-next__card h3 {
  margin: 10px 0 8px;
  font-family: var(--font-sans);
  font-size: var(--fs-md);
  font-weight: 500;
  line-height: 1.3;
  color: var(--paper);
}

.page-faq .faq-next__card p {
  margin: 0;
  font-size: var(--fs-sm);
  line-height: 1.7;
  color: rgba(230, 223, 208, 0.8);
}

.page-faq .faq-next__back {
  margin: clamp(22px, 3vw, 30px) 0 0;
}

.page-faq .faq-next__back a {
  color: var(--apricot-sand);
  font-size: var(--fs-sm);
  text-decoration: none;
  border-bottom: 1px solid rgba(243, 199, 126, 0.45);
  padding-bottom: 2px;
  transition: border-color 0.12s var(--ease), color 0.12s var(--ease);
}

.page-faq .faq-next__back a:hover,
.page-faq .faq-next__back a:focus-visible {
  color: var(--paper);
  border-color: var(--paper);
  outline: none;
}

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

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  }

  .page-faq .faq-hero__media {
    transform: rotate(-1.2deg);
  }
}

@media (min-width: 960px) {
  .page-faq .faq-body {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    padding-bottom: clamp(32px, 5vw, 60px);
  }

  .page-faq .faq-index__inner {
    position: sticky;
    top: 96px;
    padding: 20px 16px;
  }
}

@media (max-width: 640px) {
  .page-faq .qa > summary {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 10px;
    padding: 15px 16px;
  }

  .page-faq .qa__num {
    grid-column: 1 / -1;
    padding-top: 0;
  }

  .page-faq .qa__body {
    padding: 0 16px 18px;
  }

  .page-faq .faq-filter {
    padding: 14px 15px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .qa__marker,
  .page-faq .qa__marker::before,
  .page-faq .qa__marker::after,
  .page-faq .qa__vote,
  .page-faq .faq-next__card,
  .page-faq .faq-index__list a {
    transition: none;
  }

  .page-faq .faq-next__card:hover,
  .page-faq .faq-next__card:focus-visible {
    transform: none;
  }

  .page-faq .faq-hero__media {
    transform: none;
  }
}