.page-faq {
  --faq-index-w: 236px;
  --faq-anchor-offset: 128px;
  color: var(--paper);
  background: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(1.6rem, 4vw, 2.4rem) 0 clamp(2.4rem, 6vw, 4.2rem);
  background:
    radial-gradient(110% 80% at 86% 4%, rgba(47, 230, 214, 0.13), transparent 62%),
    linear-gradient(158deg, var(--ink-2) 0%, var(--ink) 58%);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: -34%;
  right: -14%;
  width: 46%;
  aspect-ratio: 1 / 1;
  background: linear-gradient(142deg, rgba(255, 138, 61, 0.16), rgba(47, 230, 214, 0.08));
  border-radius: 52% 0 48% 50%;
  pointer-events: none;
}

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

.page-faq .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-bottom: clamp(1.6rem, 4vw, 2.6rem);
}

.page-faq .breadcrumbs a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}

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

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

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(1.8rem, 5vw, 3rem);
}

.page-faq .faq-hero__lead .eyebrow {
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  color: var(--cyan);
  margin: 0 0 0.9rem;
}

.page-faq .faq-hero h1 {
  margin: 0;
  font-size: clamp(1.72rem, 5.2vw, 3.1rem);
  font-weight: 300;
  line-height: 1.24;
  letter-spacing: 0.05em;
  color: var(--paper);
}

.page-faq .faq-hero__intro {
  margin: clamp(1rem, 2.6vw, 1.4rem) 0 0;
  max-width: 58ch;
  font-size: clamp(0.95rem, 2.1vw, 1.06rem);
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .faq-locator {
  margin-top: clamp(1.4rem, 3.4vw, 2rem);
  padding: 0.95rem 1.05rem 1.05rem;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: rgba(16, 36, 62, 0.62);
}

.page-faq .faq-locator__label {
  margin: 0 0 0.7rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-faq .faq-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.page-faq .faq-chip {
  display: inline-block;
  padding: 0.34rem 0.82rem;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease), background 0.25s var(--ease);
}

.page-faq .faq-chip:hover,
.page-faq .faq-chip:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan-dim);
  background: rgba(47, 230, 214, 0.08);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: clamp(1.4rem, 3.4vw, 2rem);
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

/* ---------- 主体双栏 ---------- */
.page-faq .faq-body {
  padding: clamp(2.2rem, 6vw, 4.4rem) 0 clamp(1.8rem, 5vw, 3.4rem);
}

.page-faq .faq-layout {
  display: grid;
  gap: clamp(1.6rem, 4vw, 2.4rem);
}

.page-faq .faq-index__title {
  margin: 0 0 0.85rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 0.4rem;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  padding: 0.55rem 0.7rem;
  border: 1px solid transparent;
  border-left: 2px solid var(--line);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  color: var(--paper);
  text-decoration: none;
  font-size: 0.92rem;
  line-height: 1.5;
  transition: background 0.25s var(--ease), border-color 0.25s var(--ease), color 0.25s var(--ease);
}

.page-faq .faq-index__num {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--cyan);
  letter-spacing: 0.06em;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  background: var(--ink-2);
  border-left-color: var(--cyan);
  color: var(--cyan);
}

/* ---------- 章节 ---------- */
.page-faq .faq-chapter {
  scroll-margin-top: var(--faq-anchor-offset);
}

.page-faq .faq-chapter + .faq-chapter {
  margin-top: clamp(2.2rem, 5vw, 3.4rem);
  padding-top: clamp(1.6rem, 4vw, 2.4rem);
  border-top: 1px solid var(--line);
}

.page-faq .faq-chapter__head {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
}

.page-faq .faq-chapter__num {
  font-family: var(--mono);
  font-size: 0.76rem;
  letter-spacing: 0.12em;
  color: var(--orange);
}

.page-faq .faq-chapter h2 {
  margin: 0;
  font-size: clamp(1.24rem, 3.4vw, 1.72rem);
  font-weight: 400;
  letter-spacing: 0.05em;
  color: var(--paper);
}

.page-faq .faq-chapter__desc {
  margin: 0.6rem 0 1.1rem;
  max-width: 60ch;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 折叠条目 ---------- */
.page-faq .faq-item {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-item:first-of-type {
  border-top: 1px solid var(--line);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  padding: 1.02rem 0;
  cursor: pointer;
  list-style: none;
  transition: color 0.25s var(--ease);
}

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

.page-faq .faq-item__num {
  flex: 0 0 auto;
  min-width: 1.7rem;
  padding-top: 0.32rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--cyan-dim);
  transition: color 0.25s var(--ease);
}

.page-faq .faq-item__label {
  flex: 1;
  font-size: clamp(0.96rem, 2.2vw, 1.04rem);
  line-height: 1.65;
  color: var(--paper);
}

.page-faq .faq-item summary::after {
  content: "+";
  flex: 0 0 auto;
  margin-left: 0.6rem;
  padding-top: 0.12rem;
  font-family: var(--mono);
  font-size: 1.1rem;
  line-height: 1;
  color: var(--cyan);
  transition: transform 0.28s var(--ease), color 0.28s var(--ease);
}

.page-faq .faq-item[open] summary::after {
  content: "–";
  transform: rotate(180deg);
  color: var(--orange);
}

.page-faq .faq-item summary:hover .faq-item__label,
.page-faq .faq-item summary:focus-visible .faq-item__label {
  color: var(--cyan);
}

.page-faq .faq-item summary:hover .faq-item__num,
.page-faq .faq-item summary:focus-visible .faq-item__num {
  color: var(--orange);
}

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  border-radius: var(--r-sm);
}

.page-faq .faq-item__a {
  padding: 0 clamp(0.4rem, 2vw, 1.6rem) 1.15rem clamp(1.6rem, 5vw, 2.55rem);
}

.page-faq .faq-item[open] .faq-item__a {
  animation: faq-fade 0.28s var(--ease);
}

@keyframes faq-fade {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.page-faq .faq-item__a p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.88;
  color: var(--muted);
}

.page-faq .faq-item__a a,
.page-faq .faq-footnote a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-dim);
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-faq .faq-item__a a:hover,
.page-faq .faq-item__a a:focus-visible,
.page-faq .faq-footnote a:hover,
.page-faq .faq-footnote a:focus-visible {
  color: var(--amber);
  border-color: var(--amber);
}

/* ---------- 客服通道章节 ---------- */
.page-faq .faq-support {
  display: grid;
  gap: clamp(1.4rem, 4vw, 2.2rem);
  align-items: start;
}

.page-faq .faq-support__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-faq .faq-support__facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.8rem;
  margin-top: 1.4rem;
}

.page-faq .faq-fact {
  padding: 0.9rem 1rem;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: rgba(22, 47, 77, 0.55);
}

.page-faq .faq-fact__value {
  display: block;
  font-family: var(--mono);
  font-size: 1.24rem;
  letter-spacing: 0.03em;
  color: var(--orange);
}

.page-faq .faq-fact__label {
  display: block;
  margin-top: 0.35rem;
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 下一步路径 ---------- */
.page-faq .faq-next {
  padding: 0 0 clamp(2.6rem, 7vw, 4.6rem);
}

.page-faq .faq-next .section__head {
  margin-bottom: clamp(1.4rem, 3.6vw, 2rem);
}

.page-faq .faq-next .section__head .eyebrow {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--cyan);
  margin: 0 0 0.7rem;
}

.page-faq .faq-next .section__head h2 {
  margin: 0;
  font-size: clamp(1.3rem, 3.6vw, 1.9rem);
  font-weight: 300;
  letter-spacing: 0.06em;
  color: var(--paper);
}

.page-faq .faq-paths {
  display: grid;
  gap: 0.9rem;
}

.page-faq .faq-path {
  display: block;
  padding: 1.35rem 1.4rem;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--ink-2);
  text-decoration: none;
  color: inherit;
  transition: transform 0.28s var(--ease), border-color 0.28s var(--ease), background 0.28s var(--ease);
}

.page-faq .faq-path .index-num {
  display: block;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--cyan);
  margin-bottom: 0.7rem;
}

.page-faq .faq-path h3 {
  margin: 0 0 0.5rem;
  font-size: 1.08rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--paper);
}

.page-faq .faq-path p {
  margin: 0 0 1rem;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-path__go {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  color: var(--orange);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s var(--ease);
}

.page-faq .faq-path:hover,
.page-faq .faq-path:focus-visible {
  transform: translateY(-3px);
  border-color: var(--cyan-dim);
  background: var(--ink-3);
}

.page-faq .faq-path:hover .faq-path__go,
.page-faq .faq-path:focus-visible .faq-path__go {
  border-color: var(--orange);
}

.page-faq .faq-footnote {
  margin: 1.6rem 0 0;
  font-size: 0.9rem;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 混合动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item[open] .faq-item__a {
    animation: none;
  }
  .page-faq .faq-item summary::after,
  .page-faq .faq-path {
    transition: none;
  }
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-paths {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 880px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: center;
  }

  .page-faq .faq-support {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.82fr);
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: clamp(2rem, 5vw, 3.6rem);
  }

  .page-faq .faq-index {
    position: sticky;
    top: 132px;
    align-self: start;
  }

  .page-faq .faq-index__list {
    grid-template-columns: 1fr;
  }
}
</main>