.page-faq {
  --faq-rail-w: 268px;
  --faq-col-gap: clamp(28px, 4vw, 64px);
  --faq-panel: rgba(20, 49, 95, 0.34);
  --faq-panel-open: rgba(20, 49, 95, 0.52);
  --faq-focus: calc(var(--header-h) + var(--strip-h) + 24px);
  background: var(--ink);
  color: var(--steel);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: calc(var(--header-h) + var(--strip-h) + clamp(28px, 6vw, 72px)) 0 clamp(40px, 6vw, 80px);
  overflow: hidden;
  background:
    radial-gradient(120% 90% at 82% 12%, rgba(31, 76, 143, 0.45) 0%, rgba(5, 11, 26, 0) 62%),
    linear-gradient(180deg, var(--ink) 0%, var(--deep) 100%);
}

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

.page-faq .faq-hero__media img {
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  opacity: 0.3;
}

.page-faq .faq-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(5, 11, 26, 0.42) 0%, rgba(5, 11, 26, 0.88) 68%, var(--ink) 100%);
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__title {
  margin: clamp(16px, 3vw, 30px) 0 0;
  font-size: clamp(38px, 7.4vw, 88px);
  font-weight: 200;
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--mist);
}

.page-faq .faq-hero__lead {
  max-width: 62ch;
  margin: clamp(18px, 2.6vw, 28px) 0 0;
  color: var(--steel);
}

.page-faq .faq-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(18px, 4vw, 52px);
  margin: clamp(28px, 4.4vw, 48px) 0 0;
  padding: clamp(16px, 2.4vw, 22px) 0 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-faq .faq-hero__facts li {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.page-faq .faq-hero__facts .num {
  font-family: var(--font-num);
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 700;
  line-height: 1;
}

.page-faq .faq-hero__facts .index-label {
  line-height: 1.4;
}

/* ---------- 两栏骨架 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-col-gap);
  padding: clamp(48px, 7vw, 96px) 0 clamp(72px, 9vw, 140px);
}

.page-faq .faq-rail {
  align-self: start;
}

.page-faq .faq-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 16px 0 0;
}

.page-faq .faq-index {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-faq .faq-index a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 11px 2px;
  font-size: 13px;
  color: var(--rock);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: color 0.24s var(--ease), padding-left 0.24s var(--ease);
}

.page-faq .faq-index a:hover,
.page-faq .faq-index a:focus-visible {
  color: var(--mist);
  padding-left: 8px;
}

.page-faq .faq-index .num {
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--steel);
}

/* ---------- 问题分组 ---------- */
.page-faq .faq-group {
  padding-left: clamp(0px, 1.6vw, 22px);
  border-left: 1px solid transparent;
  scroll-margin-top: var(--faq-focus);
  transition: border-color 0.32s var(--ease);
}

.page-faq .faq-group:target {
  border-left-color: var(--accent);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
}

.page-faq .faq-group__num {
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--rock);
  flex: 0 0 auto;
}

.page-faq .faq-group__head .section-title {
  margin: 0;
  color: var(--mist);
}

.page-faq .faq-group__lead {
  max-width: 58ch;
  margin: 14px 0 0;
  color: var(--rock);
}

.page-faq .faq-list {
  margin-top: clamp(20px, 3vw, 32px);
}

/* ---------- 折叠条目 ---------- */
.page-faq .faq-item {
  background: var(--faq-panel);
  border: 1px solid var(--line);
  transition: border-color 0.26s var(--ease), background 0.26s var(--ease);
}

.page-faq .faq-item + .faq-item {
  margin-top: 12px;
}

.page-faq .faq-item[open] {
  border-color: var(--accent);
  background: var(--faq-panel-open);
  box-shadow: inset 2px 0 0 var(--accent);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 17px clamp(16px, 2.4vw, 24px);
  cursor: pointer;
  list-style: none;
  color: var(--mist);
}

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

.page-faq .faq-item__q h3 {
  margin: 0;
  font-size: clamp(15px, 1.5vw, 17px);
  font-weight: 500;
  line-height: 1.55;
  letter-spacing: 0.01em;
}

.page-faq .faq-item__marker {
  position: relative;
  flex: 0 0 auto;
  width: 14px;
  height: 14px;
  margin-top: 5px;
  border: 1px solid var(--steel);
  transition: border-color 0.24s var(--ease);
}

.page-faq .faq-item[open] .faq-item__marker {
  border-color: var(--accent);
}

.page-faq .faq-item__marker::before,
.page-faq .faq-item__marker::after {
  content: "";
  position: absolute;
  background: var(--accent);
}

.page-faq .faq-item__marker::before {
  left: 2px;
  right: 2px;
  top: 50%;
  height: 1.5px;
  transform: translateY(-50%);
}

.page-faq .faq-item__marker::after {
  top: 2px;
  bottom: 2px;
  left: 50%;
  width: 1.5px;
  transform: translateX(-50%) scaleY(1);
  transition: transform 0.24s var(--ease);
}

.page-faq .faq-item[open] .faq-item__marker::after {
  transform: translateX(-50%) scaleY(0);
}

.page-faq .faq-item__body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  padding: 0 clamp(16px, 2.4vw, 24px) 22px;
  border-top: 1px solid var(--line);
  padding-top: 18px;
}

.page-faq .faq-item[open] .faq-item__main {
  animation: faqRise 0.3s var(--ease) both;
}

.page-faq .faq-item[open] .faq-note {
  animation: faqSlide 0.34s var(--ease) both;
}

.page-faq .faq-answer {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--steel);
}

.page-faq .faq-answer strong {
  color: var(--mist);
  font-weight: 600;
}

.page-faq .faq-answer a {
  color: var(--accent-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 179, 92, 0.45);
  transition: color 0.22s var(--ease), border-color 0.22s var(--ease);
}

.page-faq .faq-answer a:hover,
.page-faq .faq-answer a:focus-visible {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.page-faq .faq-note {
  margin: 0;
  padding: 12px 14px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--steel);
  background: var(--glass);
  border: 1px solid var(--line);
  border-left: 2px solid var(--accent-soft);
  backdrop-filter: blur(6px);
}

/* ---------- 价格标签 ---------- */
.page-faq .faq-price-switch {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: clamp(20px, 3vw, 30px) 0 0;
}

.page-faq .faq-price-pair {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: 18px;
}

.page-faq .faq-price-card {
  padding: clamp(18px, 2.6vw, 26px);
  background: var(--faq-panel);
  border: 1px solid var(--line);
  transition: border-color 0.26s var(--ease), background 0.26s var(--ease);
}

.page-faq .faq-price-card--base {
  border-top: 2px solid var(--steel);
}

.page-faq .faq-price-card--return {
  background: linear-gradient(160deg, rgba(255, 106, 26, 0.16) 0%, rgba(20, 49, 95, 0.4) 68%);
  border-color: rgba(255, 106, 26, 0.45);
  border-top: 2px solid var(--accent);
}

.page-faq .faq-price-card__title {
  margin: 10px 0 10px;
  font-size: clamp(17px, 1.9vw, 21px);
  font-weight: 400;
  line-height: 1.5;
  color: var(--mist);
}

.page-faq .faq-price-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--steel);
}

/* ---------- 小屏阅读图文 ---------- */
.page-faq .faq-reading {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3.4vw, 40px);
  margin-top: clamp(20px, 3vw, 32px);
}

.page-faq .faq-reading .faq-list {
  margin-top: 0;
}

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

.page-faq .faq-reading__frame {
  aspect-ratio: 5 / 4;
}

.page-faq .faq-reading__frame img {
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

.page-faq .faq-reading__figure .media-caption {
  margin-top: 12px;
}

/* ---------- 联系出口 ---------- */
.page-faq .faq-group--contact {
  padding-bottom: 8px;
}

.page-faq .faq-contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: clamp(22px, 3vw, 34px);
}

.page-faq .faq-contact-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
  padding: clamp(20px, 2.8vw, 30px);
  background: var(--faq-panel);
  border: 1px solid var(--line);
}

.page-faq .faq-contact-card .btn {
  margin-top: 6px;
  text-decoration: none;
}

.page-faq .faq-contact-val {
  margin: 0;
  font-size: clamp(17px, 2.1vw, 22px);
  font-weight: 400;
  line-height: 1.4;
  color: var(--mist);
  word-break: break-all;
}

.page-faq .faq-contact-val--num {
  font-family: var(--font-num);
  font-size: clamp(28px, 4vw, 38px);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--accent);
}

.page-faq .faq-contact-note {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--rock);
}

/* ---------- 动效 ---------- */
@keyframes faqRise {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes faqSlide {
  from {
    opacity: 0;
    transform: translateX(16px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 桌面与平板 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-item__body {
    grid-template-columns: minmax(0, 1fr) 236px;
    gap: 24px;
    align-items: start;
  }

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

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

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: var(--faq-focus);
  }

  .page-faq .faq-reading {
    grid-template-columns: minmax(0, 1fr) minmax(0, 320px);
    align-items: start;
  }
}

@media (min-width: 1280px) {
  .page-faq .faq-item__body {
    grid-template-columns: minmax(0, 1fr) 280px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item[open] .faq-item__main,
  .page-faq .faq-item[open] .faq-note {
    animation: none;
  }

  .page-faq .faq-index a,
  .page-faq .faq-item,
  .page-faq .faq-item__marker::after {
    transition: none;
  }
}