.page-faq {
  --faq-line: rgba(110, 106, 143, .28);
  --faq-line-strong: rgba(110, 106, 143, .48);
  --faq-panel-bg: rgba(17, 26, 51, .78);
  --faq-glow: rgba(198, 255, 61, .10);
  --faq-glow-cyan: rgba(79, 209, 255, .10);
  color: var(--ice);
  background: var(--void);
}

.page-faq .wrap {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding-inline: clamp(18px, 4vw, 56px);
}

/* ---------- 页面头部 ---------- */
.page-faq .page-head {
  padding-block: clamp(40px, 7vw, 84px) clamp(28px, 4vw, 48px);
  position: relative;
}

.page-faq .page-head::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--faq-line-strong) 18%, var(--faq-line-strong) 82%, transparent);
}

.page-faq .breadcrumb ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 22px;
  padding: 0;
  font-size: var(--t13);
  color: var(--mist);
}

.page-faq .breadcrumb li + li::before {
  content: "/";
  margin-right: 10px;
  color: var(--violet);
}

.page-faq .breadcrumb a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s ease, border-color .2s ease;
}

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

.page-faq .breadcrumb [aria-current="page"] {
  color: var(--ice);
}

.page-faq .eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--t13);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--lime);
  margin: 0 0 16px;
  padding: 4px 12px;
  border: 1px solid rgba(198, 255, 61, .34);
  border-radius: var(--pill);
  background: var(--faq-glow);
}

.page-faq h1 {
  margin: 0 0 20px;
  font-size: clamp(30px, 6.4vw, 62px);
  line-height: 1.14;
  letter-spacing: -0.025em;
  font-weight: 800;
  color: var(--ice);
  max-width: 18ch;
}

.page-faq .lede {
  margin: 0;
  max-width: 36ch;
  font-size: var(--t18);
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 分区 ---------- */
.page-faq .section {
  padding-block: clamp(44px, 6vw, 84px);
}

.page-faq .section__head {
  margin-bottom: clamp(24px, 3.4vw, 40px);
}

.page-faq .section__title {
  margin: 0 0 12px;
  font-size: clamp(22px, 3vw, 34px);
  line-height: 1.25;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--ice);
  max-width: 22ch;
}

.page-faq .section__sub {
  margin: 0;
  max-width: 42ch;
  font-size: var(--t15);
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .faq-divider {
  height: 1px;
  margin-inline: clamp(18px, 4vw, 56px);
  background-image: repeating-linear-gradient(90deg, var(--violet) 0 6px, transparent 6px 18px);
  opacity: .32;
}

/* ---------- 编号步骤条 ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-faq .faq-step {
  position: relative;
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 16px;
  padding-block: clamp(20px, 2.6vw, 30px);
  border-top: 1px dashed var(--faq-line);
}

.page-faq .faq-step:first-child {
  border-top: none;
  padding-top: 4px;
}

.page-faq .faq-step__num {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(30px, 6vw, 48px);
  line-height: .95;
  letter-spacing: -0.04em;
  color: var(--lime);
  text-shadow: 0 0 22px rgba(198, 255, 61, .18);
  padding-top: 4px;
}

.page-faq .faq-step__body h3 {
  margin: 0 0 8px;
  font-size: var(--t18);
  line-height: 1.4;
  color: var(--ice);
  font-weight: 700;
}

.page-faq .faq-step__body p {
  margin: 0;
  max-width: 40ch;
  font-size: var(--t15);
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .faq-steps--tight .faq-step__num {
  color: var(--cyan);
  text-shadow: 0 0 22px rgba(79, 209, 255, .16);
}

.page-faq .faq-strong {
  color: var(--orange);
  font-weight: 700;
}

/* ---------- 图片框 ---------- */
.page-faq .media-frame {
  margin: clamp(26px, 3.4vw, 40px) 0 0;
  position: relative;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--faq-line);
  background:
    radial-gradient(120% 90% at 18% 12%, var(--faq-glow-cyan), transparent 62%),
    var(--night);
}

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

.page-faq .media-frame__cap {
  margin: 0;
  padding: 12px 20px 16px;
  font-size: var(--t13);
  line-height: 1.6;
  color: var(--mist);
  border-top: 1px solid var(--faq-line);
}

.page-faq .media-frame--wide {
  max-width: 100%;
}

/* ---------- 双列卡片 ---------- */
.page-faq .faq-pair {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-faq .card {
  position: relative;
  border-radius: var(--r-lg);
  border: 1px solid var(--faq-line);
  background: var(--faq-panel-bg);
  padding: clamp(20px, 2.6vw, 30px);
  overflow: hidden;
}

.page-faq .card--slab {
  background: linear-gradient(160deg, rgba(198, 255, 61, .06), rgba(17, 26, 51, .9) 58%);
  border-color: rgba(198, 255, 61, .22);
}

.page-faq .card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px dashed var(--faq-line);
}

.page-faq .card__title {
  margin: 0;
  font-size: var(--t18);
  line-height: 1.4;
  font-weight: 700;
  color: var(--ice);
}

.page-faq .pill {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: var(--pill);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  white-space: nowrap;
  border: 1px solid transparent;
}

.page-faq .pill--lime {
  color: var(--lime);
  border-color: rgba(198, 255, 61, .4);
  background: var(--faq-glow);
}

.page-faq .pill--orange {
  color: var(--orange);
  border-color: rgba(255, 122, 47, .42);
  background: rgba(255, 122, 47, .08);
}

/* ---------- 小序号列表 ---------- */
.page-faq .faq-mini {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-mini li {
  display: grid;
  grid-template-columns: 26px 1fr;
  gap: 12px;
  align-items: start;
  font-size: var(--t15);
  line-height: 1.7;
  color: var(--ice);
}

.page-faq .faq-mini li > span {
  width: 26px;
  height: 26px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--faq-line-strong);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--lime);
  background: rgba(27, 37, 66, .8);
}

.page-faq .faq-note {
  margin: 20px 0 0;
  font-size: var(--t13);
  line-height: 1.75;
  color: var(--mist);
  padding-left: 14px;
  border-left: 2px solid var(--violet);
}

.page-faq .faq-note--wide {
  max-width: 48ch;
  margin-top: 28px;
}

.page-faq .faq-cta {
  margin: 26px 0 0;
}

/* ---------- 桌面 / 移动对照 ---------- */
.page-faq .faq-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-faq .faq-split__col {
  position: relative;
  padding: clamp(20px, 2.6vw, 30px);
  border-radius: var(--r-lg);
  border: 1px solid var(--faq-line);
  background: linear-gradient(180deg, rgba(27, 37, 66, .85), rgba(17, 26, 51, .62));
}

.page-faq .faq-split__col--alt {
  background: linear-gradient(180deg, rgba(255, 122, 47, .07), rgba(17, 26, 51, .7));
  border-color: rgba(255, 122, 47, .2);
}

.page-faq .faq-split__col h3 {
  margin: 14px 0 10px;
  font-size: var(--t18);
  line-height: 1.4;
  color: var(--ice);
  font-weight: 700;
}

.page-faq .faq-split__col p {
  margin: 0 0 10px;
  font-size: var(--t15);
  line-height: 1.75;
  color: var(--mist);
  max-width: 40ch;
}

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

.page-faq .faq-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  padding: 4px 12px;
  border-radius: var(--pill);
  color: var(--cyan);
  border: 1px solid rgba(79, 209, 255, .36);
  background: rgba(79, 209, 255, .08);
}

.page-faq .faq-tag--orange {
  color: var(--orange);
  border-color: rgba(255, 122, 47, .4);
  background: rgba(255, 122, 47, .08);
}

/* ---------- 排查折叠面板 ---------- */
.page-faq .faq-trouble {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: start;
}

.page-faq .faq-panels {
  display: grid;
  gap: 14px;
}

.page-faq .faq-panel {
  border: 1px solid var(--faq-line);
  border-radius: var(--r-lg);
  background: var(--faq-panel-bg);
  overflow: hidden;
  transition: border-color .24s ease, background-color .24s ease;
}

.page-faq .faq-panel:hover {
  border-color: var(--faq-line-strong);
}

.page-faq .faq-panel[open] {
  border-color: rgba(198, 255, 61, .32);
  background: linear-gradient(180deg, rgba(198, 255, 61, .06), rgba(17, 26, 51, .82) 60%);
}

.page-faq .faq-panel summary {
  list-style: none;
  cursor: pointer;
  min-height: 44px;
  padding: 18px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: var(--t18);
  line-height: 1.5;
  font-weight: 600;
  color: var(--ice);
}

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

.page-faq .faq-panel summary:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: -3px;
}

.page-faq .faq-panel summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1;
  color: var(--lime);
  transition: transform .24s ease;
}

.page-faq .faq-panel[open] summary::after {
  content: "−";
  transform: rotate(180deg);
}

.page-faq .faq-panel__body {
  padding: 4px 22px 22px;
  animation: faqPanelIn .28s ease both;
}

@keyframes faqPanelIn {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

.page-faq .faq-trouble__fig {
  margin: 0;
  border-radius: var(--r-lg);
}

/* ---------- 判断顺序图 ---------- */
.page-faq .faq-map-wrap {
  margin-top: clamp(28px, 3.4vw, 44px);
  padding: clamp(18px, 2.4vw, 28px);
  border-radius: var(--r-lg);
  border: 1px solid var(--faq-line);
  background:
    radial-gradient(90% 120% at 8% 0%, var(--faq-glow), transparent 60%),
    var(--panel);
  overflow: hidden;
}

.page-faq .faq-map {
  display: block;
  width: 100%;
  max-width: 720px;
  height: auto;
  margin: 0 auto;
}

/* ---------- 收口模块 ---------- */
.page-faq .faq-last {
  padding-bottom: clamp(56px, 7vw, 100px);
}

.page-faq .faq-last__inner {
  position: relative;
  border-radius: var(--r-lg);
  border: 1px solid rgba(198, 255, 61, .22);
  background:
    radial-gradient(120% 130% at 100% 0%, rgba(255, 122, 47, .12), transparent 58%),
    linear-gradient(180deg, rgba(27, 37, 66, .92), rgba(10, 16, 32, .92));
  padding: clamp(26px, 3.6vw, 48px);
}

.page-faq .faq-last__text {
  margin: 14px 0 0;
  max-width: 46ch;
  font-size: var(--t15);
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-last__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 28px;
  margin: 26px 0 0;
  padding-top: 20px;
  border-top: 1px dashed var(--faq-line);
}

.page-faq .faq-last__k {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-faq .faq-last__kl {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--violet);
}

.page-faq .faq-last__kv {
  font-family: var(--font-mono);
  font-size: var(--t15);
  color: var(--ice);
  word-break: break-word;
}

.page-faq .faq-last__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

/* ---------- 按钮 ---------- */
.page-faq .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  border-radius: var(--pill);
  font-size: var(--t15);
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  transition: background-color .22s ease, border-color .22s ease, color .22s ease;
}

.page-faq .btn--primary {
  background: var(--lime);
  color: var(--void);
  border-color: var(--lime);
}

.page-faq .btn--primary:hover,
.page-faq .btn--primary:focus-visible {
  background: transparent;
  color: var(--lime);
}

.page-faq .btn--ghost {
  background: transparent;
  color: var(--ice);
  border-color: var(--faq-line-strong);
}

.page-faq .btn--ghost:hover,
.page-faq .btn--ghost:focus-visible {
  border-color: var(--lime);
  color: var(--lime);
}

.page-faq .btn--quiet {
  background: transparent;
  color: var(--mist);
  border-color: transparent;
  padding-inline: 8px;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.page-faq .btn--quiet:hover,
.page-faq .btn--quiet:focus-visible {
  color: var(--lime);
}

.page-faq .btn:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-step {
    grid-template-columns: 88px 1fr;
    gap: 24px;
  }

  .page-faq .faq-split {
    grid-template-columns: 1fr 1fr;
  }

  .page-faq .faq-pair {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-trouble {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 32px;
  }

  .page-faq .faq-trouble__fig {
    margin-top: 6px;
  }
}

@media (min-width: 1120px) {
  .page-faq .faq-step {
    grid-template-columns: 104px 1fr;
    gap: 32px;
  }

  .page-faq .faq-steps {
    margin-left: 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-panel__body {
    animation: none;
  }

  .page-faq .faq-panel summary::after {
    transition: none;
  }
}