.page-faq {
  display: block;
  background: var(--yy-night);
  color: var(--yy-text);
  font-family: var(--yy-font-sans);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(24px, 4vw, 44px) 0 clamp(34px, 5vw, 64px);
  background:
    radial-gradient(120% 90% at 92% -20%, rgba(53, 224, 209, 0.12), transparent 58%),
    radial-gradient(80% 70% at 0% 110%, rgba(165, 101, 74, 0.14), transparent 62%),
    linear-gradient(168deg, var(--yy-teal) 0%, var(--yy-night) 72%);
  border-bottom: 1px solid var(--yy-line);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(115deg, transparent 0 62%, rgba(242, 169, 59, 0.05) 62% 62.4%, transparent 62.4% 100%);
}

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

.page-faq .yy-breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 clamp(20px, 3vw, 34px);
  padding: 0;
  list-style: none;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--yy-text-dim);
}

.page-faq .yy-breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--yy-line);
}

.page-faq .yy-breadcrumb a {
  color: var(--yy-text-dim);
  text-decoration: none;
  transition: color 200ms var(--yy-ease);
}

.page-faq .yy-breadcrumb a:hover {
  color: var(--yy-cyan);
}

.page-faq .faq-hero__eyebrow {
  margin: 0 0 14px;
  color: var(--yy-clay-lt);
}

.page-faq .faq-hero__title {
  margin: 0 0 18px;
  max-width: 20em;
  font-family: var(--yy-font-sans);
  font-weight: 800;
  font-stretch: condensed;
  font-size: clamp(30px, 5.4vw, 60px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--yy-cream);
}

.page-faq .faq-hero__lead {
  margin: 0 0 clamp(26px, 4vw, 40px);
  max-width: 46em;
  font-size: 15px;
  line-height: 1.78;
  color: var(--yy-text);
}

/* 三入口快捷条 */
.page-faq .faq-quickstrip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--yy-line);
  border: 1px solid var(--yy-line);
}

.page-faq .faq-quickstrip li {
  min-width: 0;
}

.page-faq .faq-quickstrip a {
  display: flex;
  flex-direction: column;
  gap: 6px;
  height: 100%;
  padding: 16px 14px 18px;
  background: rgba(8, 19, 17, 0.62);
  text-decoration: none;
  border-top: 2px solid transparent;
  transition: background 220ms var(--yy-ease), border-color 220ms var(--yy-ease);
}

.page-faq .faq-quickstrip a:hover,
.page-faq .faq-quickstrip a:focus-visible {
  background: rgba(15, 46, 42, 0.9);
  border-top-color: var(--yy-amber);
}

.page-faq .faq-quickstrip__k {
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--yy-cyan);
}

.page-faq .faq-quickstrip__t {
  font-size: 15px;
  font-weight: 700;
  color: var(--yy-cream);
}

.page-faq .faq-quickstrip__d {
  font-size: 11.5px;
  line-height: 1.5;
  color: var(--yy-text-dim);
}

/* ---------- 主体双栏 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 48px);
  padding-top: clamp(30px, 5vw, 60px);
  padding-bottom: clamp(48px, 7vw, 96px);
}

/* 左侧索引 */
.page-faq .faq-index {
  border-left: 1px solid var(--yy-line);
  padding-left: 16px;
}

.page-faq .faq-index__title {
  margin: 0 0 14px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--yy-rock);
}

.page-faq .faq-index__list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index__list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 10px 9px 0;
  font-size: 14px;
  color: var(--yy-text);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 58, 53, 0.5);
  transition: color 200ms var(--yy-ease), padding-left 200ms var(--yy-ease);
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  color: var(--yy-cyan);
  padding-left: 6px;
}

.page-faq .faq-index__list .yy-mono {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--yy-clay-lt);
}

.page-faq .faq-index__note {
  margin: 18px 0 0;
  font-size: 11.5px;
  line-height: 1.7;
  color: var(--yy-text-dim);
}

.page-faq .faq-index__note .yy-mono {
  color: var(--yy-amber);
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-stack {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 4vw, 52px);
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: 96px;
  padding-bottom: clamp(24px, 3vw, 34px);
  border-bottom: 1px solid var(--yy-line);
}

.page-faq .faq-group:last-of-type {
  border-bottom: 0;
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 12px;
}

.page-faq .faq-group__num {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--yy-moss-lt);
  flex: none;
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--yy-font-serif);
  font-weight: 600;
  font-size: clamp(21px, 2.6vw, 30px);
  line-height: 1.34;
  color: var(--yy-cream);
}

.page-faq .faq-group__intro {
  margin: 0 0 20px;
  max-width: 44em;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--yy-text-dim);
}

/* 图片 */
.page-faq .faq-figure {
  margin: 0 0 22px;
  border: 1px solid var(--yy-line);
  background: rgba(15, 46, 42, 0.4);
}

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

.page-faq .faq-figure .yy-media__caption {
  display: block;
  padding: 10px 14px 12px;
  border-top: 1px solid var(--yy-line);
  font-size: 11.5px;
  line-height: 1.6;
  color: var(--yy-rock);
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-item {
  margin-top: 8px;
  border: 1px solid var(--yy-line-soft);
  background: rgba(15, 46, 42, 0.38);
  transition: border-color 220ms var(--yy-ease), background 220ms var(--yy-ease);
}

.page-faq .faq-item[open] {
  border-color: rgba(165, 101, 74, 0.7);
  background: rgba(15, 46, 42, 0.62);
}

.page-faq .faq-item summary {
  position: relative;
  padding: 16px 48px 16px 18px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--yy-cream);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item summary::after {
  content: "+";
  position: absolute;
  top: 50%;
  right: 18px;
  transform: translateY(-50%);
  font-family: var(--yy-font-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--yy-amber);
  transition: color 220ms var(--yy-ease);
}

.page-faq .faq-item[open] summary::after {
  content: "–";
  color: var(--yy-cyan);
}

.page-faq .faq-item summary:hover {
  color: var(--yy-amber);
}

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

.page-faq .faq-item[open] summary {
  border-bottom: 1px solid var(--yy-line-soft);
}

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

.page-faq .faq-answer p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--yy-text);
}

.page-faq .faq-answer p + p {
  margin-top: 10px;
}

.page-faq .faq-answer .faq-answer__lead {
  padding-left: 14px;
  border-left: 2px solid var(--yy-clay);
  color: var(--yy-cream);
  font-weight: 500;
}

.page-faq .faq-answer .yy-mono {
  color: var(--yy-cyan);
  font-family: var(--yy-font-mono);
  font-variant-numeric: tabular-nums;
}

/* ---------- 底部提示 ---------- */
.page-faq .faq-cta {
  padding: clamp(24px, 4vw, 36px) clamp(20px, 3vw, 32px);
  border: 1px solid var(--yy-line);
  border-top: 2px solid var(--yy-amber);
  background:
    linear-gradient(150deg, rgba(79, 107, 87, 0.2), transparent 60%),
    rgba(8, 19, 17, 0.72);
}

.page-faq .faq-cta__title {
  margin: 0 0 10px;
  font-family: var(--yy-font-serif);
  font-weight: 600;
  font-size: clamp(19px, 2.2vw, 24px);
  color: var(--yy-cream);
}

.page-faq .faq-cta__text {
  margin: 0 0 18px;
  max-width: 40em;
  font-size: 14px;
  line-height: 1.8;
  color: var(--yy-text-dim);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 16px;
}

.page-faq .faq-cta__actions .yy-btn {
  text-decoration: none;
}

.page-faq .faq-cta__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding-top: 14px;
  border-top: 1px solid var(--yy-line);
  font-size: 11.5px;
  line-height: 1.7;
  color: var(--yy-rock);
}

.page-faq .faq-cta__meta .yy-mono {
  font-family: var(--yy-font-mono);
  color: var(--yy-text-dim);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero__lead {
    font-size: 16.5px;
  }

  .page-faq .faq-quickstrip a {
    padding: 20px 20px 22px;
  }

  .page-faq .faq-quickstrip__t {
    font-size: 17px;
  }

  .page-faq .faq-quickstrip__d {
    font-size: 12.5px;
  }

  .page-faq .faq-index__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 18px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-body {
    grid-template-columns: 236px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 92px;
  }

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

  .page-faq .faq-item summary {
    padding: 18px 54px 18px 22px;
    font-size: 15.5px;
  }

  .page-faq .faq-answer {
    padding: 18px 22px 24px;
  }

  .page-faq .faq-answer p {
    font-size: 15px;
  }
}

@media (min-width: 1120px) {
  .page-faq .faq-body {
    grid-template-columns: 264px minmax(0, 1fr);
    gap: 64px;
  }
}

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