.page-faq {
  --faq-gap: clamp(20px, 4vw, 44px);
  --faq-pad: clamp(52px, 9vw, 96px);
  background: var(--paper);
  color: var(--ink);
  overflow-x: clip;
  padding-bottom: 76px;
}

.page-faq h1,
.page-faq h2 {
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-faq .breadcrumb {
  padding-top: clamp(18px, 4vw, 30px);
}

/* 首屏 */
.page-faq .faq-hero {
  padding-top: clamp(20px, 4vw, 38px);
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: clamp(24px, 5vw, 48px);
  align-items: end;
}

.page-faq .faq-hero__text h1 {
  font-size: clamp(30px, 6.6vw, 62px);
  line-height: 1.06;
  margin: 10px 0 0;
  max-width: 15em;
}

.page-faq .faq-hero__text .u-lead {
  margin-top: 16px;
  color: var(--ink-soft);
  max-width: 36em;
}

.page-faq .faq-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 28px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-facts__num {
  display: block;
  font-family: var(--font-num);
  font-size: clamp(26px, 5.4vw, 42px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-faq .faq-facts__label {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
}

/* 分类目录 */
.page-faq .faq-toc {
  border: 1px solid var(--line-strong);
  border-left: 4px solid var(--gold);
  padding: clamp(16px, 3vw, 24px);
  background: var(--paper-3, var(--paper));
}

.page-faq .faq-toc__title {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--ink-soft);
}

.page-faq .faq-toc__link {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 9px 0;
  border-bottom: 1px dashed var(--line);
  color: var(--ink);
  text-decoration: none;
  font-weight: 700;
  font-size: 15px;
}

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

.page-faq .faq-toc__link .u-toc__num {
  font-family: var(--font-num);
  font-size: 20px;
  font-weight: 700;
  color: var(--gold-deep);
  letter-spacing: 0.02em;
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  color: var(--gold-deep);
}

.page-faq .faq-toc__link.is-active .u-toc__num {
  color: var(--teal);
}

/* 顶部图带 */
.page-faq .faq-band {
  margin: clamp(28px, 6vw, 60px) 0 0;
}

.page-faq .faq-band img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 6;
  object-fit: cover;
}

/* 章节 */
.page-faq .faq-chapter {
  padding: var(--faq-pad) 0;
  background: var(--paper);
}

.page-faq .faq-chapter--paper2 {
  background: var(--paper-2);
}

.page-faq .faq-chapter--dark {
  background: var(--pitch);
  color: var(--paper);
}

.page-faq .faq-chapter__head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: clamp(12px, 3vw, 28px);
  align-items: start;
  padding-bottom: 18px;
  border-bottom: 2px solid var(--line-strong);
  margin-bottom: clamp(20px, 4vw, 40px);
}

.page-faq .faq-chapter--dark .faq-chapter__head {
  border-bottom-color: rgba(245, 241, 230, 0.3);
}

.page-faq .faq-chapter__num {
  font-family: var(--font-num);
  font-size: clamp(38px, 9vw, 82px);
  font-weight: 700;
  line-height: 0.78;
  letter-spacing: -0.03em;
  color: var(--gold-deep);
}

@supports ((-webkit-text-stroke: 1px #000) or (text-stroke: 1px #000)) {
  .page-faq .faq-chapter__num {
    color: transparent;
    -webkit-text-stroke: 1.5px var(--gold);
  }
}

.page-faq .faq-chapter__head h2 {
  font-size: clamp(22px, 3.8vw, 36px);
  line-height: 1.1;
  margin: 0;
}

.page-faq .faq-chapter__lead {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink-soft);
  max-width: 34em;
}

.page-faq .faq-chapter--dark .faq-chapter__lead {
  color: var(--on-dark);
}

/* 问答列表 */
.page-faq .faq-list {
  max-width: 900px;
}

.page-faq .faq-details {
  border-top: 1px solid var(--line);
  scroll-margin-top: 120px;
}

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

.page-faq .faq-chapter--dark .faq-details {
  border-color: rgba(245, 241, 230, 0.22);
}

.page-faq .faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: clamp(13px, 2.4vw, 19px) 0;
  cursor: pointer;
  list-style: none;
  font-size: clamp(16px, 2.2vw, 19px);
  font-weight: 700;
  line-height: 1.35;
  transition: color 200ms var(--ease);
}

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

.page-faq .faq-q::after {
  content: "+";
  flex: none;
  font-family: var(--font-num);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--gold);
}

.page-faq .faq-details[open] .faq-q::after {
  content: "–";
}

.page-faq .faq-details[open] .faq-q {
  color: var(--gold-deep);
}

.page-faq .faq-chapter--dark .faq-details[open] .faq-q {
  color: var(--gold);
}

.page-faq .faq-q:hover {
  color: var(--gold-deep);
}

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

.page-faq .faq-a {
  padding: 0 0 clamp(16px, 3vw, 24px);
}

.page-faq .faq-details[open] > .faq-a {
  background: var(--paper-2);
  border-left: 3px solid var(--gold);
  padding: clamp(14px, 2.6vw, 22px) clamp(14px, 3vw, 26px);
  margin-bottom: clamp(12px, 2.4vw, 20px);
}

.page-faq .faq-chapter--paper2 .faq-details[open] > .faq-a {
  background: var(--paper-3, var(--paper));
}

.page-faq .faq-chapter--dark .faq-details[open] > .faq-a {
  background: rgba(245, 241, 230, 0.08);
}

.page-faq .faq-a p {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-soft);
  max-width: 34em;
}

.page-faq .faq-chapter--dark .faq-a p {
  color: var(--on-dark);
}

.page-faq .faq-a a {
  color: var(--gold-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-chapter--dark .faq-a a {
  color: var(--teal);
}

/* 深色章节的分栏与配图 */
.page-faq .faq-grid {
  display: grid;
  gap: clamp(24px, 5vw, 48px);
}

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

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 1px solid rgba(245, 241, 230, 0.24);
}

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 0.06em;
  line-height: 1.7;
  color: var(--on-dark-soft);
}

/* 提问入口区块 */
.page-faq .faq-ask-block {
  background: var(--night);
  color: var(--paper);
  padding: clamp(48px, 8vw, 84px) 0;
  scroll-margin-top: 110px;
}

.page-faq .faq-ask-block__inner {
  display: grid;
  gap: 24px;
  align-items: center;
}

.page-faq .faq-ask-block .u-eyebrow {
  color: var(--teal);
}

.page-faq .faq-ask-block h2 {
  font-size: clamp(24px, 4.2vw, 40px);
  line-height: 1.12;
  margin: 0;
}

.page-faq .faq-ask-block p {
  margin: 12px 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--on-dark);
  max-width: 34em;
}

.page-faq .faq-ask-block p a {
  color: var(--teal);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-ask-block__btn {
  justify-self: start;
}

/* 右缘固定胶囊 */
.page-faq .faq-ask {
  position: fixed;
  right: 0;
  bottom: 0;
  z-index: 40;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  background: var(--night);
  color: var(--paper);
  text-decoration: none;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  border-top-left-radius: 999px;
  box-shadow: 0 -6px 20px rgba(15, 30, 56, 0.28);
}

.page-faq .faq-ask__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 0 4px rgba(63, 224, 180, 0.16);
  animation: faq-pulse 2.4s var(--ease) infinite;
}

.page-faq .faq-ask:hover,
.page-faq .faq-ask:focus-visible {
  background: var(--gold-deep);
}

@keyframes faq-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.82); }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-ask__dot {
    animation: none;
  }
}

/* 桌面布局 */
@media (min-width: 900px) {
  .page-faq {
    padding-bottom: 0;
  }

  .page-faq .faq-hero__inner {
    grid-template-columns: 62fr 38fr;
    gap: clamp(32px, 5vw, 76px);
  }

  .page-faq .faq-toc {
    margin-bottom: 6px;
  }

  .page-faq .faq-band img {
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - 54px), 0 100%);
    aspect-ratio: 16 / 5;
  }

  .page-faq .faq-grid {
    grid-template-columns: 62fr 38fr;
    align-items: start;
  }

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

  .page-faq .faq-ask-block__inner {
    grid-template-columns: 1fr auto;
    gap: 40px;
  }

  .page-faq .faq-ask {
    top: 50%;
    bottom: auto;
    right: 0;
    transform: translateY(-50%);
    padding: 20px 12px;
    border-radius: 999px 0 0 999px;
    writing-mode: vertical-rl;
    letter-spacing: 0.22em;
  }
}