/* =========================================================
   答疑中心 · 页面专属样式（作用域：.page-faq）
   ========================================================= */

.page-faq {
  --faq-gap: clamp(28px, 5vw, 60px);
  --faq-radius: 2px;
  --faq-rule: 1px solid var(--line);
}

/* ---------------- 首屏 ---------------- */

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(28px, 5vw, 56px) 0 clamp(30px, 5vw, 52px);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(255, 106, 43, 0.13) 0%, transparent 58%),
    radial-gradient(90% 80% at 6% 100%, rgba(47, 216, 198, 0.10) 0%, transparent 60%),
    var(--c-ink);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(114deg, transparent 61.6%, rgba(47, 216, 198, 0.22) 61.8%, rgba(47, 216, 198, 0.22) 62.1%, transparent 62.4%),
    linear-gradient(114deg, transparent 73.4%, rgba(255, 196, 92, 0.26) 73.6%, rgba(255, 196, 92, 0.26) 74.0%, transparent 74.3%);
}

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

.page-faq .faq-hero__crumbs {
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-faq .faq-hero__title {
  max-width: 17ch;
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(34px, 7.2vw, 70px);
  line-height: 1.03;
  letter-spacing: -0.018em;
  color: var(--c-paper);
}

.page-faq .faq-hero__title em {
  font-style: normal;
  color: var(--c-cyan);
}

.page-faq .faq-hero__lead {
  max-width: 64ch;
  margin-top: 20px;
  color: rgba(242, 237, 227, 0.78);
}

/* 首屏三个数字 */

.page-faq .faq-facts {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: clamp(28px, 4vw, 42px) 0 0;
  padding: 1px;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-fact {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 16px 18px;
  background: var(--c-ink);
}

.page-faq .faq-fact__num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 6vw, 46px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--c-orange);
}

.page-faq .faq-fact__label {
  font-size: 13px;
  line-height: 1.55;
  color: var(--c-gray);
}

@media (min-width: 560px) {
  .page-faq .faq-facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------------- 主体网格：左索引 + 右问答 ---------------- */

.page-faq .faq-shell {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
  padding-top: clamp(32px, 5vw, 60px);
  padding-bottom: clamp(64px, 9vw, 120px);
  align-items: start;
}

@media (min-width: 960px) {
  .page-faq .faq-shell {
    grid-template-columns: 226px minmax(0, 1fr);
    gap: clamp(30px, 3.6vw, 60px);
  }
}

/* ---------------- 左侧问题目录 ---------------- */

.page-faq .faq-index {
  padding: 14px;
  background: rgba(22, 34, 46, 0.72);
  border: var(--faq-rule);
}

.page-faq .faq-index__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-gray);
}

.page-faq .faq-index__list {
  display: flex;
  gap: 8px;
  margin: 0 -14px;
  padding: 0 14px 2px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-faq .faq-index__list::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-index__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  white-space: nowrap;
  font-size: 14px;
  color: var(--c-paper);
  text-decoration: none;
  border: 1px solid var(--line);
  border-left: 2px solid transparent;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  border-color: rgba(255, 106, 43, 0.5);
  border-left-color: var(--c-orange);
  background: rgba(255, 106, 43, 0.1);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-orange);
}

.page-faq .faq-index__note {
  margin: 14px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--c-gray);
}

@media (min-width: 960px) {
  .page-faq .faq-index {
    position: sticky;
    top: 30px;
    padding: 20px 16px;
  }

  .page-faq .faq-index__list {
    display: block;
    margin: 0;
    padding: 0;
    overflow: visible;
  }

  .page-faq .faq-index__item + .faq-index__item {
    margin-top: 2px;
  }

  .page-faq .faq-index__link {
    display: grid;
    grid-template-columns: 24px minmax(0, 1fr);
    align-items: baseline;
    gap: 8px;
    padding: 10px 10px;
    white-space: normal;
    font-size: 14.5px;
    line-height: 1.4;
    border: 0;
    border-left: 2px solid transparent;
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    background: rgba(255, 106, 43, 0.1);
    border-left-color: var(--c-orange);
  }
}

/* ---------------- 右侧问答区 ---------------- */

.page-faq .faq-body {
  display: flex;
  flex-direction: column;
  gap: clamp(38px, 6vw, 76px);
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: 92px;
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 16px;
  align-items: start;
  padding-bottom: 14px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--line-strong);
}

.page-faq .faq-group__num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 5.4vw, 48px);
  line-height: 0.88;
  letter-spacing: -0.03em;
  color: var(--c-orange);
}

.page-faq .faq-group__titlewrap {
  min-width: 0;
  padding-top: 2px;
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 3.6vw, 34px);
  line-height: 1.1;
  letter-spacing: -0.012em;
  color: var(--c-paper);
}

.page-faq .faq-group__note {
  margin: 7px 0 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--c-gray);
}

.page-faq .faq-group__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.page-faq .faq-group__list {
  min-width: 0;
}

/* ---------------- 问答条目 ---------------- */

.page-faq .faq-item {
  background: var(--c-slate);
  border: var(--faq-rule);
  border-left: 2px solid transparent;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

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

.page-faq .faq-item[open] {
  background: var(--c-slate-2);
  border-left-color: var(--c-cyan);
}

.page-faq .faq-item__q {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.55;
  color: var(--c-paper);
  transition: color var(--dur) var(--ease);
}

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

.page-faq .faq-item__q::marker {
  content: "";
}

.page-faq .faq-item__q:hover {
  color: #ffffff;
}

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: -2px;
}

.page-faq .faq-item__mark {
  width: 9px;
  height: 9px;
  flex: none;
  border-right: 2px solid var(--c-cyan);
  border-bottom: 2px solid var(--c-cyan);
  transform: rotate(45deg) translate(-2px, -2px);
  transition: transform var(--dur) var(--ease);
}

.page-faq .faq-item[open] .faq-item__mark {
  transform: rotate(225deg) translate(-2px, -2px);
}

.page-faq .faq-item__panel {
  padding: 0 18px 18px;
}

.page-faq .faq-item__inner {
  padding-left: 14px;
  border-left: 2px solid var(--c-amber);
}

.page-faq .faq-item[open] .faq-item__inner {
  animation: faq-panel-in var(--dur) var(--ease) both;
}

@keyframes faq-panel-in {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.page-faq .faq-item__inner p {
  margin: 0;
  max-width: 66ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: rgba(242, 237, 227, 0.82);
}

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

.page-faq .faq-item__inner a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 216, 198, 0.4);
  transition: border-color var(--dur) var(--ease);
}

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

.page-faq .faq-code {
  display: inline-block;
  padding: 1px 7px;
  margin: 0 1px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  white-space: nowrap;
  color: var(--c-amber);
  border: 1px solid rgba(255, 196, 92, 0.38);
}

/* ---------------- 配图 ---------------- */

.page-faq .faq-figure {
  margin: 0;
  aspect-ratio: 4 / 3;
  border: var(--faq-rule);
  background: var(--c-slate);
}

.page-faq .faq-figure--square {
  aspect-ratio: 1 / 1;
  max-width: 340px;
}

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

@media (min-width: 1200px) {
  .page-faq .faq-group__layout {
    grid-template-columns: minmax(0, 1fr) 236px;
    gap: clamp(28px, 3vw, 40px);
    align-items: start;
  }

  .page-faq .faq-figure {
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-group__layout--flip {
    grid-template-columns: 236px minmax(0, 1fr);
  }

  .page-faq .faq-group__layout--flip .faq-group__list {
    order: 2;
  }

  .page-faq .faq-group__layout--flip .faq-figure {
    order: 1;
  }
}

/* ---------------- 底部联系块 ---------------- */

.page-faq .faq-contact {
  margin-top: clamp(8px, 2vw, 16px);
  padding: clamp(22px, 4vw, 34px);
  border: 1px solid rgba(255, 106, 43, 0.34);
  background:
    linear-gradient(135deg, rgba(255, 106, 43, 0.14) 0%, rgba(22, 34, 46, 0.92) 58%),
    var(--c-slate);
}

.page-faq .faq-contact__title {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(19px, 2.8vw, 26px);
  line-height: 1.25;
  color: var(--c-paper);
}

.page-faq .faq-contact__list {
  display: grid;
  gap: 10px;
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-contact__item {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  align-items: baseline;
  font-size: 15px;
  line-height: 1.6;
  color: rgba(242, 237, 227, 0.88);
}

.page-faq .faq-contact__item .mono {
  min-width: 72px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-amber);
}

/* ---------------- 底部悬浮索引条 ---------------- */

.page-faq .faq-dock {
  display: none;
}

@media (min-width: 900px) {
  .page-faq .faq-dock {
    display: block;
    position: fixed;
    left: 50%;
    bottom: 22px;
    z-index: 40;
    transform: translateX(-50%);
    background: rgba(11, 20, 32, 0.94);
    border: 1px solid var(--line-strong);
    box-shadow: 0 16px 38px rgba(0, 0, 0, 0.5);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
  }

  .page-faq .faq-dock__list {
    display: flex;
    gap: 2px;
    margin: 0;
    padding: 6px;
    list-style: none;
  }

  .page-faq .faq-dock__link {
    display: block;
    padding: 8px 13px;
    font-family: var(--font-mono);
    font-size: 13px;
    white-space: nowrap;
    color: rgba(242, 237, 227, 0.74);
    text-decoration: none;
    transition: color var(--dur) var(--ease), background var(--dur) var(--ease);
  }

  .page-faq .faq-dock__link:hover,
  .page-faq .faq-dock__link:focus-visible {
    color: var(--c-ink);
    background: var(--c-cyan);
  }
}

/* ---------------- 收尾与无障碍 ---------------- */

@media (min-width: 720px) {
  .page-faq .faq-item__q {
    padding: 18px 22px;
    font-size: 17px;
  }

  .page-faq .faq-item__panel {
    padding: 0 22px 22px;
  }

  .page-faq .faq-item__inner {
    padding-left: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item__mark,
  .page-faq .faq-index__link,
  .page-faq .faq-dock__link {
    transition: none;
  }

  .page-faq .faq-item[open] .faq-item__inner {
    animation: none;
  }
}
<<<END>>>