.page-faq {
  --faq-topic-gap: clamp(44px, 7vw, 76px);
  --faq-card-bg: rgba(244, 247, 242, 0.06);
  --faq-card-line: rgba(199, 207, 214, 0.2);
  --faq-body-text: #34434f;
  display: block;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background: var(--bx-ink);
  color: var(--bx-on-dark-strong);
  padding: clamp(88px, 14vw, 128px) 0 clamp(48px, 8vw, 78px);
}

.page-faq .faq-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-faq .faq-hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.2;
  filter: saturate(0.6);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(158deg, rgba(11, 79, 74, 0.82) 0%, rgba(14, 27, 42, 0.95) 62%),
    repeating-linear-gradient(135deg, rgba(199, 207, 214, 0.05) 0 1px, transparent 1px 22px);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 2;
}

.page-faq .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin: 0 0 clamp(22px, 4vw, 34px);
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--bx-on-dark);
}

.page-faq .breadcrumb a {
  color: var(--bx-lime);
  text-decoration: none;
}

.page-faq .breadcrumb a:hover {
  text-decoration: underline;
}

.page-faq .breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: rgba(244, 247, 242, 0.4);
}

.page-faq .eyebrow {
  margin: 0 0 14px;
  font-family: var(--bx-font-num);
  font-size: 12.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--bx-lime);
}

.page-faq .faq-hero h1 {
  margin: 0 0 20px;
  max-width: 18ch;
  font-family: var(--bx-font-head);
  font-size: clamp(32px, 7.6vw, 68px);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--bx-white);
}

.page-faq .faq-hero__lead {
  margin: 0 0 clamp(30px, 5vw, 46px);
  max-width: 64ch;
  font-size: 16.5px;
  line-height: 1.8;
  color: var(--bx-on-dark);
}

.page-faq .faq-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-stats .data-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 16px 14px;
  border: 1px solid var(--faq-card-line);
  border-radius: var(--bx-radius-m);
  background: var(--faq-card-bg);
}

.page-faq .faq-stats .data-card__label {
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--bx-on-dark);
}

.page-faq .faq-stats .data-card__value {
  display: flex;
  align-items: baseline;
  gap: 6px;
  font-family: var(--bx-font-num);
  font-size: clamp(26px, 5vw, 34px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--bx-lime);
}

.page-faq .faq-stats .data-card__unit {
  font-family: var(--bx-font-body);
  font-size: 13px;
  font-weight: 500;
  color: var(--bx-on-dark);
}

.page-faq .faq-stats .data-card__note {
  font-size: 12.5px;
  line-height: 1.6;
  color: rgba(244, 247, 242, 0.6);
}

/* ---------- 主体布局 ---------- */
.page-faq .faq-body {
  background: var(--bx-white);
  padding: clamp(46px, 8vw, 84px) 0 clamp(56px, 9vw, 100px);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(34px, 6vw, 56px);
  align-items: start;
}

.page-faq .faq-ladder {
  display: block;
  width: 118px;
  height: auto;
  margin-bottom: 18px;
  color: var(--bx-field);
}

.page-faq .faq-side__title {
  margin: 0 0 14px;
  font-family: var(--bx-font-serif);
  font-size: 17px;
  font-weight: 600;
  color: var(--bx-ink);
}

.page-faq .faq-side .index-nav {
  display: grid;
  gap: 2px;
  border-left: 1px solid var(--bx-line);
}

.page-faq .faq-side .index-nav__link {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-left: -1px;
  padding: 10px 14px;
  border-left: 2px solid transparent;
  font-size: 14px;
  line-height: 1.5;
  color: var(--bx-slate);
  text-decoration: none;
  transition: color 0.24s var(--bx-ease), border-color 0.24s var(--bx-ease), background 0.24s var(--bx-ease);
}

.page-faq .faq-side .index-nav__link .num {
  font-family: var(--bx-font-num);
  font-size: 12px;
  color: var(--bx-half);
  transition: color 0.24s var(--bx-ease);
}

.page-faq .faq-side .index-nav__link:hover {
  color: var(--bx-ink);
  background: rgba(31, 122, 76, 0.05);
}

.page-faq .faq-side .index-nav__link.is-active {
  color: var(--bx-field);
  border-left-color: var(--bx-field);
  background: rgba(31, 122, 76, 0.07);
  font-weight: 600;
}

.page-faq .faq-side .index-nav__link.is-active .num {
  color: var(--bx-field);
}

.page-faq .faq-side__help {
  margin-top: 22px;
  padding: 18px;
  border: 1px solid var(--bx-line-soft);
  border-radius: var(--bx-radius-m);
  background: var(--bx-mist);
}

.page-faq .faq-side__help p {
  margin: 0 0 14px;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--bx-body-text);
}

.page-faq .faq-side__help .btn {
  font-size: 14px;
}

/* ---------- 问答章节 ---------- */
.page-faq .faq-content {
  min-width: 0;
}

.page-faq .faq-topic {
  margin-bottom: var(--faq-topic-gap);
  scroll-margin-top: 110px;
}

.page-faq .faq-topic:last-of-type {
  margin-bottom: clamp(38px, 6vw, 60px);
}

.page-faq .faq-topic__head {
  position: relative;
  margin-bottom: 22px;
  padding-top: 6px;
}

.page-faq .faq-topic__head .chapter-num {
  display: block;
  margin-bottom: 8px;
  font-family: var(--bx-font-num);
  font-size: clamp(30px, 6vw, 44px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
  color: rgba(31, 122, 76, 0.22);
}

.page-faq .faq-topic__head .section__title {
  margin: 0 0 10px;
  font-family: var(--bx-font-serif);
  font-size: clamp(23px, 4vw, 32px);
  font-weight: 700;
  line-height: 1.28;
  color: var(--bx-ink);
}

.page-faq .faq-topic__head .section__lead {
  margin: 0;
  max-width: 58ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--bx-body-text);
}

/* 手风琴 */
.page-faq .faq-list {
  border-bottom: 1px solid var(--bx-line);
}

.page-faq .qa {
  border-top: 1px solid var(--bx-line);
}

.page-faq .qa > summary {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr) 14px;
  gap: 12px;
  align-items: start;
  padding: 18px 0;
  cursor: pointer;
  list-style: none;
  transition: color 0.24s var(--bx-ease);
}

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

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

.page-faq .qa__num {
  padding-top: 4px;
  font-family: var(--bx-font-num);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--bx-slate);
}

.page-faq .qa__q {
  font-size: 16.5px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--bx-ink);
}

.page-faq .qa__dot {
  width: 11px;
  height: 11px;
  margin-top: 8px;
  border: 1px solid var(--bx-line-mid);
  border-radius: 50%;
  background: transparent;
  transition: background 0.24s var(--bx-ease), border-color 0.24s var(--bx-ease), box-shadow 0.24s var(--bx-ease);
}

.page-faq .qa[open] > summary .qa__q {
  color: var(--bx-field-deep);
}

.page-faq .qa[open] .qa__dot {
  background: var(--bx-lime);
  border-color: var(--bx-field);
  box-shadow: 0 0 0 4px rgba(200, 255, 61, 0.24);
}

.page-faq .qa > summary:hover .qa__q {
  color: var(--bx-field);
}

.page-faq .qa__body {
  padding: 0 0 20px 42px;
}

.page-faq .qa__body p {
  margin: 0 0 10px;
  font-size: 15.5px;
  line-height: 1.82;
  color: var(--bx-body-text);
}

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

.page-faq .qa__note {
  padding: 8px 0 8px 12px;
  border-left: 2px solid var(--bx-lime);
  font-family: var(--bx-font-num);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--bx-slate);
  background: rgba(200, 255, 61, 0.08);
}

/* 图示 */
.page-faq .faq-figure {
  margin: 26px 0 0;
  border: 1px solid var(--bx-line-soft);
  border-radius: var(--bx-radius-m);
  overflow: hidden;
  background: var(--bx-mist);
  box-shadow: var(--bx-shadow-s);
}

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

.page-faq .faq-figure figcaption {
  padding: 12px 16px 14px;
  font-family: var(--bx-font-num);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--bx-slate);
  border-top: 1px solid var(--bx-line-soft);
}

/* ---------- 延伸入口 ---------- */
.page-faq .faq-more {
  padding: clamp(26px, 5vw, 38px) clamp(20px, 4vw, 32px) clamp(28px, 5vw, 40px);
  border: 1px solid var(--bx-line-soft);
  border-radius: var(--bx-radius-l);
  background: linear-gradient(168deg, var(--bx-mist) 0%, rgba(31, 122, 76, 0.08) 100%);
  box-shadow: var(--bx-shadow-m);
}

.page-faq .faq-more .section__title {
  margin: 0 0 20px;
  font-family: var(--bx-font-serif);
  font-size: clamp(21px, 3.6vw, 27px);
  font-weight: 700;
  color: var(--bx-ink);
}

.page-faq .faq-more__list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-more__list a {
  display: grid;
  gap: 4px;
  padding: 14px 16px;
  border: 1px solid rgba(31, 122, 76, 0.16);
  border-radius: var(--bx-radius-s);
  background: var(--bx-white);
  text-decoration: none;
  transition: transform 0.24s var(--bx-ease), border-color 0.24s var(--bx-ease), box-shadow 0.24s var(--bx-ease);
}

.page-faq .faq-more__list a:hover {
  transform: translateY(-2px);
  border-color: var(--bx-field);
  box-shadow: var(--bx-shadow-m);
}

.page-faq .faq-more__label {
  font-size: 15.5px;
  font-weight: 600;
  color: var(--bx-field-deep);
}

.page-faq .faq-more__desc {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--bx-slate);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
  }

  .page-faq .faq-more__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-hero {
    padding-top: clamp(120px, 11vw, 152px);
  }

  .page-faq .faq-layout {
    grid-template-columns: 232px minmax(0, 1fr);
    gap: clamp(40px, 5vw, 72px);
  }

  .page-faq .faq-side {
    position: sticky;
    top: 104px;
  }

  .page-faq .qa > summary {
    padding: 22px 0;
  }

  .page-faq .qa__q {
    font-size: 17.5px;
  }

  .page-faq .qa__body {
    padding-left: 42px;
    padding-right: clamp(20px, 6vw, 90px);
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-more__list a,
  .page-faq .qa__dot,
  .page-faq .faq-side .index-nav__link {
    transition: none;
  }

  .page-faq .faq-more__list a:hover {
    transform: none;
  }
}

.page-faq {
  --bx-body-text: currentColor;
}