.page-faq {
  --faq-accent-soft: rgba(53, 224, 200, 0.35);
  --faq-line-strong: #26385a;
  display: block;
  background: var(--ink-950);
  color: var(--text);
  padding-bottom: clamp(56px, 9vw, 110px);
  font-family: var(--font-sans);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(22px, 4vw, 40px) 0 clamp(24px, 4vw, 42px);
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -40%;
  left: -10%;
  right: -10%;
  height: 340px;
  background:
    radial-gradient(58% 100% at 18% 0%, rgba(53, 224, 200, 0.17), transparent 72%),
    radial-gradient(52% 100% at 82% 0%, rgba(124, 92, 255, 0.16), transparent 72%);
  pointer-events: none;
}

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

.page-faq .faq-hero .breadcrumbs {
  margin-bottom: clamp(16px, 2.6vw, 26px);
}

.page-faq .faq-hero .index-tag {
  display: inline-block;
  color: var(--cyan);
  margin-bottom: 14px;
}

.page-faq .faq-hero h1 {
  margin: 0 0 16px;
  font-family: var(--font-narrow);
  font-weight: 200;
  font-size: clamp(31px, 5.6vw, 64px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  max-width: 20ch;
}

.page-faq .faq-hero .lede {
  margin: 0;
  max-width: 62ch;
  color: var(--muted);
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.78;
}

/* ---------- 分组标签 ---------- */
.page-faq .faq-tabs {
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(14, 21, 36, 0.85), rgba(7, 11, 20, 0));
}

.page-faq .faq-tabs__scroller {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-top: clamp(16px, 2.4vw, 22px);
  padding-bottom: 14px;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

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

.page-faq .faq-tabs__scroller .chip {
  flex: none;
  text-decoration: none;
  white-space: nowrap;
}

/* ---------- 主布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  padding-top: clamp(26px, 4vw, 44px);
}

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

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

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

.page-faq .faq-index a {
  display: block;
  margin-left: -1px;
  padding: 9px 0 9px 16px;
  border-left: 2px solid transparent;
  color: var(--muted);
  font-size: 13.5px;
  text-decoration: none;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.page-faq .faq-index a:hover,
.page-faq .faq-index a:focus-visible {
  color: var(--text);
  border-left-color: var(--cyan);
}

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

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: 108px;
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(36px, 6vw, 74px);
  padding-top: clamp(28px, 5vw, 56px);
  border-top: 1px solid var(--line);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.page-faq .faq-group__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan);
  border: 1px solid var(--faq-accent-soft);
  border-radius: var(--radius-sm);
  padding: 4px 8px;
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(21px, 3vw, 30px);
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: 0.01em;
}

.page-faq .faq-group__desc {
  margin: 12px 0 0;
  max-width: 64ch;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.78;
}

.page-faq .faq-sub {
  margin: clamp(24px, 3.6vw, 36px) 0 0;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

/* ---------- 提示条 ---------- */
.page-faq .hint {
  margin: clamp(16px, 2.6vw, 24px) 0 0;
  padding: 13px 16px;
  border: 1px solid;
  border-radius: var(--radius-md);
  font-size: 14.5px;
  line-height: 1.72;
}

.page-faq .hint--lilac {
  border-color: rgba(201, 184, 255, 0.42);
  background: rgba(201, 184, 255, 0.07);
  color: #e2dbff;
}

.page-faq .hint--amber {
  border-color: rgba(255, 180, 84, 0.4);
  background: rgba(255, 180, 84, 0.07);
  color: #ffe3b8;
}

/* ---------- 媒体框 ---------- */
.page-faq .media-frame {
  margin: clamp(18px, 3vw, 28px) 0 0;
}

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

/* ---------- 核对清单 ---------- */
.page-faq .checklist {
  list-style: none;
  margin: clamp(16px, 2.6vw, 24px) 0 0;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--panel);
  overflow: hidden;
}

.page-faq .checklist li + li {
  border-top: 1px solid var(--line-soft);
}

.page-faq .checklist label {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 13px 16px;
  cursor: pointer;
  transition: background 0.18s ease;
}

.page-faq .checklist label:hover {
  background: var(--panel-2);
}

.page-faq .checklist input {
  flex: none;
  width: 16px;
  height: 16px;
  margin: 3px 0 0;
  accent-color: #35e0c8;
  cursor: pointer;
}

.page-faq .checklist__no {
  flex: none;
  margin-top: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-faq .checklist__text {
  font-size: 14.5px;
  line-height: 1.66;
  color: #cbd6e8;
}

.page-faq .checklist input:checked ~ .checklist__text {
  color: var(--muted);
}

/* ---------- 问答折叠 ---------- */
.page-faq .qa {
  margin-top: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--panel);
  overflow: hidden;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.page-faq .qa[open] {
  border-color: var(--faq-line-strong);
  background: var(--panel-2);
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 16px;
  list-style: none;
  cursor: pointer;
  font-size: 15px;
  font-weight: 500;
  line-height: 1.6;
  color: var(--text);
}

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

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

.page-faq .qa__q:hover .qa__text,
.page-faq .qa__q:focus-visible .qa__text {
  color: var(--cyan);
}

.page-faq .qa__idx {
  flex: none;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--violet);
}

.page-faq .qa__text {
  flex: 1 1 auto;
  transition: color 0.18s ease;
}

.page-faq .qa__sign {
  position: relative;
  flex: none;
  width: 16px;
  height: 16px;
  margin-top: 5px;
}

.page-faq .qa__sign::before,
.page-faq .qa__sign::after {
  content: "";
  position: absolute;
  background: var(--muted);
  border-radius: 2px;
}

.page-faq .qa__sign::before {
  top: 7px;
  left: 0;
  width: 16px;
  height: 2px;
}

.page-faq .qa__sign::after {
  top: 0;
  left: 7px;
  width: 2px;
  height: 16px;
  transition: transform 0.22s ease;
}

.page-faq .qa[open] .qa__sign::before {
  background: var(--cyan);
}

.page-faq .qa[open] .qa__sign::after {
  transform: scaleY(0);
}

.page-faq .qa__a {
  padding: 0 16px 18px;
}

.page-faq .qa__a > p {
  margin: 0;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.75;
}

/* ---------- 编号步骤 ---------- */
.page-faq .steps {
  list-style: none;
  counter-reset: st;
  margin: 14px 0 0;
  padding: 0;
}

.page-faq .steps li {
  counter-increment: st;
  position: relative;
  padding-left: 32px;
  margin-bottom: 9px;
  font-size: 14.5px;
  line-height: 1.7;
  color: #c7d3e6;
}

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

.page-faq .steps li::before {
  content: counter(st, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

/* ---------- 机型分档 ---------- */
.page-faq .tiers {
  display: grid;
  gap: 12px;
  margin-top: clamp(18px, 3vw, 26px);
}

.page-faq .tier {
  border: 1px solid var(--line);
  border-top-width: 3px;
  border-radius: var(--radius-md);
  background: var(--panel);
  padding: 16px 16px 14px;
}

.page-faq .tier--entry {
  border-top-color: var(--violet);
}

.page-faq .tier--main {
  border-top-color: var(--cyan);
}

.page-faq .tier--flag {
  border-top-color: var(--amber);
}

.page-faq .tier__name {
  margin: 0;
  font-size: 17px;
  font-weight: 600;
}

.page-faq .tier__range {
  display: block;
  margin: 6px 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.page-faq .spec {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  padding: 7px 0;
  border-bottom: 1px dashed var(--line-soft);
  font-size: 13.5px;
}

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

.page-faq .spec__k {
  flex: none;
  color: var(--muted);
}

.page-faq .spec__v {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--text);
  text-align: right;
}

/* ---------- 待准备信息 ---------- */
.page-faq .need-list {
  list-style: none;
  margin: clamp(18px, 3vw, 26px) 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .need-list li {
  border: 1px solid var(--line);
  border-left: 3px solid var(--violet);
  border-radius: var(--radius-sm);
  background: var(--panel);
  padding: 12px 14px;
  font-size: 14px;
  line-height: 1.66;
  color: #cbd6e8;
}

.page-faq .need-list strong {
  display: block;
  margin-bottom: 4px;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--text);
}

/* ---------- 联系方式面板 ---------- */
.page-faq .contact-panel {
  margin-top: clamp(16px, 2.6vw, 22px);
  padding: clamp(18px, 3vw, 26px);
  border: 1px solid var(--faq-line-strong);
  border-radius: var(--radius-lg);
  background: linear-gradient(142deg, #101a2d 0%, #0b1220 100%);
  box-shadow: var(--shadow-panel);
}

.page-faq .contact-panel__lead {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: #d5deee;
}

.page-faq .contact-panel__note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--muted);
}

/* ---------- 每段收束 ---------- */
.page-faq .faq-next {
  margin: clamp(18px, 2.8vw, 26px) 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--cyan);
  color: var(--muted);
  font-size: 14px;
  line-height: 1.74;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .need-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 720px) {
  .page-faq .tiers {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: 208px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    display: block;
    position: sticky;
    top: 104px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .qa__text,
  .page-faq .qa__sign::after,
  .page-faq .checklist label,
  .page-faq .faq-index a {
    transition: none;
  }
}