.page-faq {
  --faq-side-w: 320px;
  --faq-item-radius: 20px;
  padding-bottom: clamp(56px, 9vw, 120px);
}

/* ---------- 面包屑占位 ---------- */
.page-faq .breadcrumb {
  margin-top: clamp(16px, 3vw, 32px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 4.5vw, 54px) 0 clamp(34px, 6vw, 76px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(620px 320px at 6% 24%, rgba(124, 77, 255, 0.16), transparent 70%),
    radial-gradient(520px 280px at 92% 82%, rgba(0, 230, 118, 0.12), transparent 72%);
}

.page-faq .faq-hero-inner {
  position: relative;
  display: grid;
  gap: clamp(26px, 4vw, 52px);
  align-items: center;
}

.page-faq .hero-kicker {
  margin: 0 0 16px;
  font-size: 13px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--green);
}

.page-faq .hero-kicker .mono {
  font-family: var(--font-mono);
  font-weight: 700;
}

.page-faq .hero-title {
  margin: 0;
  font-size: clamp(32px, 6.4vw, 62px);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-faq .hero-lede {
  margin: 20px 0 0;
  max-width: 46ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
  color: var(--text);
}

.page-faq .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-faq .hero-note {
  margin: 18px 0 0;
  font-size: 13.5px;
  color: var(--text-dim);
}

.page-faq .hero-frame {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--ink-800);
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.42);
}

.page-faq .hero-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(200deg, rgba(0, 230, 118, 0.12), transparent 55%);
}

.page-faq .hero-frame img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 5 / 3;
  object-fit: cover;
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: clamp(34px, 5vw, 60px);
  align-items: start;
}

.page-faq .faq-body {
  order: 1;
  min-width: 0;
}

.page-faq .faq-side {
  order: 2;
  min-width: 0;
  display: grid;
  gap: 18px;
  align-content: start;
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: 110px;
  margin-bottom: clamp(44px, 7vw, 88px);
}

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

.page-faq .group-head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 22px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.page-faq .group-num {
  flex: none;
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.6vw, 38px);
  font-weight: 700;
  line-height: 1;
  color: var(--green);
  font-variant-numeric: tabular-nums;
}

.page-faq .group-title {
  margin: 0;
  font-size: clamp(21px, 3vw, 30px);
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--white);
}

/* ---------- 手风琴 ---------- */
.page-faq .accordion {
  display: grid;
  gap: 12px;
}

.page-faq .faq-item {
  border-radius: var(--faq-item-radius);
  background: var(--ink-800);
  border: 1px solid var(--line-soft);
  overflow: hidden;
  transition: border-color 0.32s var(--ease), box-shadow 0.32s var(--ease), background 0.32s var(--ease);
}

.page-faq .faq-item:hover {
  border-color: rgba(124, 77, 255, 0.4);
}

.page-faq .faq-item[open] {
  border-color: rgba(0, 230, 118, 0.42);
  background: linear-gradient(180deg, rgba(0, 230, 118, 0.07), rgba(19, 26, 58, 0) 62%), var(--ink-800);
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.36);
}

.page-faq .faq-q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 17px clamp(16px, 2.4vw, 26px);
  font-size: clamp(15px, 1.6vw, 17px);
  font-weight: 500;
  line-height: 1.62;
  color: var(--white);
  cursor: pointer;
  list-style: none;
  transition: color 0.26s var(--ease);
}

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

.page-faq .faq-q::after {
  content: "";
  flex: none;
  width: 26px;
  height: 26px;
  margin-left: auto;
  border-radius: 50%;
  border: 1px solid rgba(124, 77, 255, 0.4);
  background:
    linear-gradient(var(--green), var(--green)) center / 11px 2px no-repeat,
    linear-gradient(var(--green), var(--green)) center / 2px 11px no-repeat;
  transition: background-size 0.32s var(--ease), border-color 0.32s var(--ease), transform 0.32s var(--ease);
}

.page-faq .faq-item[open] .faq-q::after {
  background-size: 11px 2px, 2px 0;
  border-color: rgba(0, 230, 118, 0.6);
  transform: rotate(180deg);
}

.page-faq .faq-item[open] .faq-q {
  color: var(--green-soft);
}

.page-faq .faq-a {
  padding: 0 clamp(16px, 2.4vw, 26px) 22px;
}

.page-faq .faq-a p {
  margin: 0;
  max-width: 66ch;
  padding-left: 15px;
  border-left: 2px solid rgba(0, 230, 118, 0.32);
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
}

.page-faq .faq-a a {
  color: var(--green);
  text-decoration: none;
  border-bottom: 1px dashed rgba(0, 230, 118, 0.5);
}

.page-faq .faq-a a:hover {
  color: var(--green-soft);
}

.page-faq .faq-item[open] .faq-a {
  animation: faqOpen 0.36s var(--ease) both;
}

@keyframes faqOpen {
  from { opacity: 0; transform: translateY(-7px); }
  to { opacity: 1; transform: none; }
}

/* ---------- 同步示意图 ---------- */
.page-faq .sync-visual {
  margin: clamp(24px, 3.4vw, 36px) 0 0;
}

.page-faq .sync-visual .media-frame {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--ink-800);
}

.page-faq .sync-visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-faq .sync-visual .media-caption {
  margin-top: 12px;
  font-size: 13px;
  color: var(--text-dim);
}

/* ---------- 分组尾注 ---------- */
.page-faq .group-foot {
  margin: 22px 0 0;
  font-size: 14.5px;
  color: var(--text-dim);
}

.page-faq .group-foot a {
  color: var(--amber);
  text-decoration: none;
  border-bottom: 1px dashed rgba(255, 109, 0, 0.55);
  margin-left: 6px;
}

.page-faq .group-foot a:hover {
  color: var(--white);
}

/* ---------- 侧栏导航 ---------- */
.page-faq .faq-nav {
  border-radius: var(--radius-md);
  padding: 20px 18px;
  background: var(--ink-800);
  border: 1px solid var(--line-soft);
}

.page-faq .faq-nav-title {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.page-faq .faq-nav-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 4px;
}

.page-faq .faq-nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--pill);
  font-size: 14.5px;
  color: var(--text);
  text-decoration: none;
  border: 1px solid transparent;
  transition: background 0.26s var(--ease), color 0.26s var(--ease), border-color 0.26s var(--ease);
}

.page-faq .faq-nav-link .mono {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--violet);
}

.page-faq .faq-nav-link:hover {
  background: rgba(124, 77, 255, 0.14);
  color: var(--white);
}

.page-faq .faq-nav-link[aria-current="true"] {
  background: rgba(0, 230, 118, 0.14);
  border-color: rgba(0, 230, 118, 0.42);
  color: var(--white);
}

.page-faq .faq-nav-link[aria-current="true"] .mono {
  color: var(--green);
}

/* ---------- 提问卡 ---------- */
.page-faq .faq-ask-card {
  border-radius: var(--radius-md);
  padding: 22px 20px;
  background: linear-gradient(158deg, var(--green-deep), var(--ink-800) 78%);
  border: 1px solid rgba(0, 230, 118, 0.3);
}

.page-faq .ask-title {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 900;
  color: var(--white);
}

.page-faq .ask-text {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text);
}

.page-faq .faq-ask-card .btn {
  margin-bottom: 14px;
}

.page-faq .ask-line {
  display: block;
  font-size: 13px;
  line-height: 1.9;
  color: var(--green-soft);
  text-decoration: none;
  word-break: break-all;
}

.page-faq .ask-line:hover {
  color: var(--white);
}

/* ---------- 侧栏底部跳转 ---------- */
.page-faq .faq-back {
  display: block;
  padding: 14px 18px;
  border-radius: var(--pill);
  font-size: 13.5px;
  color: var(--text);
  text-decoration: none;
  border: 1px dashed rgba(255, 109, 0, 0.5);
  text-align: center;
  transition: color 0.26s var(--ease), border-color 0.26s var(--ease);
}

.page-faq .faq-back:hover {
  color: var(--amber);
  border-color: var(--amber);
}

/* ---------- 桌面端 ---------- */
@media (min-width: 640px) {
  .page-faq .hero-actions {
    gap: 14px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.08fr);
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 1fr) var(--faq-side-w);
  }

  .page-faq .faq-side {
    position: sticky;
    top: 108px;
  }
}

@media (min-width: 1280px) {
  .page-faq {
    --faq-side-w: 344px;
  }
}

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

  .page-faq .faq-q::after {
    transition: none;
  }
}