.page-faq {
  --faq-border: rgba(36, 54, 95, 0.9);
  --faq-panel: linear-gradient(155deg, rgba(18, 34, 74, 0.62), rgba(11, 23, 48, 0.88));
  --faq-halo: 0 0 0 1px rgba(53, 230, 210, 0.14), 0 26px 52px -34px rgba(53, 230, 210, 0.55);
  --faq-anchor: 148px;
  color: var(--text);
  font-family: var(--font-body);
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-faq .faq-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-top: clamp(16px, 3vw, 28px);
  font-size: 13px;
  color: var(--text-3);
}

.page-faq .faq-crumb a {
  color: var(--text-2);
  text-decoration: none;
  transition: color var(--ease);
}

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

.page-faq .faq-crumb span[aria-current="page"] {
  color: var(--cyan-soft);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: clamp(22px, 4.5vw, 44px) 0 clamp(20px, 3.5vw, 34px);
  position: relative;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -60px;
  right: -10%;
  width: min(70vw, 620px);
  height: min(70vw, 620px);
  background: radial-gradient(circle at center, rgba(53, 230, 210, 0.16), rgba(53, 230, 210, 0) 68%);
  pointer-events: none;
  z-index: -1;
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(29px, 6.2vw, 56px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  max-width: 20ch;
}

.page-faq .faq-lead {
  margin: 16px 0 0;
  max-width: 48ch;
  font-size: clamp(15px, 2.2vw, 17px);
  line-height: 1.85;
  color: var(--text-2);
}

.page-faq .faq-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 30px);
}

.page-faq .faq-hero-visual {
  position: relative;
  margin: clamp(26px, 4.5vw, 46px) 0 0;
  border: 1px solid var(--faq-border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ink-1);
  box-shadow: 0 40px 80px -60px rgba(53, 230, 210, 0.65);
}

.page-faq .faq-hero-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(5, 11, 26, 0.72) 0%, rgba(5, 11, 26, 0) 58%);
  pointer-events: none;
}

.page-faq .faq-hero-visual img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 分组导航 ---------- */
.page-faq .group-nav {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 18px 0;
  border-top: 1px solid rgba(36, 54, 95, 0.55);
  border-bottom: 1px solid rgba(36, 54, 95, 0.55);
}

.page-faq .group-nav-label {
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--text-3);
  text-transform: uppercase;
}

.page-faq .group-nav-list {
  display: flex;
  gap: 10px;
  margin: 0;
  padding: 2px 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .group-pill {
  display: inline-block;
  white-space: nowrap;
  padding: 9px 16px;
  border: 1px solid var(--faq-border);
  border-radius: 999px;
  background: rgba(18, 34, 74, 0.42);
  color: var(--text-2);
  font-size: 14px;
  text-decoration: none;
  transition: color var(--ease), border-color var(--ease), background var(--ease);
}

.page-faq .group-pill:hover,
.page-faq .group-pill:focus-visible {
  color: var(--ink-0);
  background: var(--cyan);
  border-color: var(--cyan);
}

/* ---------- 章节 ---------- */
.page-faq .faq-section {
  padding: clamp(38px, 6.5vw, 72px) 0;
  border-bottom: 1px solid rgba(36, 54, 95, 0.4);
}

.page-faq .faq-section:last-of-type {
  border-bottom: 0;
}

.page-faq .group-head {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.page-faq .group-num {
  flex: 0 0 auto;
  padding: 6px 9px;
  border-radius: 8px;
  background: var(--cyan);
  color: var(--ink-0);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1;
  letter-spacing: 0.08em;
}

.page-faq .group-title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(22px, 3.8vw, 32px);
  line-height: 1.3;
  scroll-margin-top: var(--faq-anchor);
}

.page-faq .group-desc {
  margin: 10px 0 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-2);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-list {
  margin-top: clamp(18px, 3vw, 28px);
}

.page-faq .qa {
  border: 1px solid var(--faq-border);
  border-radius: 14px;
  background: var(--faq-panel);
  transition: border-color var(--ease), box-shadow var(--ease);
}

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

.page-faq .qa[open] {
  border-color: rgba(53, 230, 210, 0.45);
  box-shadow: var(--faq-halo);
}

.page-faq .qa summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--text);
}

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

.page-faq .qa summary:hover {
  color: var(--cyan-soft);
}

.page-faq .qa summary:focus-visible {
  outline: 1px solid var(--cyan);
  outline-offset: -3px;
  border-radius: 14px;
}

.page-faq .qa-idx {
  flex: 0 0 auto;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-faq .qa-mark {
  position: relative;
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin-top: 3px;
  margin-left: auto;
  border: 1px solid var(--line);
  border-radius: 50%;
  transition: border-color var(--ease), box-shadow var(--ease);
}

.page-faq .qa-mark::before,
.page-faq .qa-mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--cyan);
  transform: translate(-50%, -50%);
}

.page-faq .qa-mark::before {
  width: 8px;
  height: 1.5px;
}

.page-faq .qa-mark::after {
  width: 1.5px;
  height: 8px;
  transition: transform var(--ease), opacity var(--ease);
}

.page-faq .qa[open] .qa-mark {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(53, 230, 210, 0.12);
}

.page-faq .qa[open] .qa-mark::after {
  transform: translate(-50%, -50%) scaleY(0);
  opacity: 0;
}

.page-faq .qa-a {
  padding: 0 18px 20px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-2);
}

.page-faq .qa-a p {
  margin: 0 0 10px;
}

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

.page-faq .qa-a a {
  color: var(--cyan-soft);
  text-decoration: underline;
  text-decoration-color: rgba(53, 230, 210, 0.4);
  text-underline-offset: 3px;
}

.page-faq .qa-steps {
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: qstep;
}

.page-faq .qa-steps li {
  position: relative;
  margin-top: 10px;
  padding-left: 42px;
  color: var(--text);
  line-height: 1.7;
  counter-increment: qstep;
}

.page-faq .qa-steps li::before {
  content: counter(qstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  padding: 2px 6px;
  border: 1px solid var(--line);
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.35;
  color: var(--cyan);
}

.page-faq .faq-foot-note {
  margin: 20px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-3);
}

.page-faq .faq-foot-note a,
.page-faq .assist-meta a {
  color: var(--cyan-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(143, 244, 234, 0.35);
}

.page-faq .faq-foot-note a:hover,
.page-faq .assist-meta a:hover {
  border-bottom-color: var(--cyan);
}

/* ---------- 图文错位 ---------- */
.page-faq .faq-split {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
}

.page-faq .side-figure {
  margin: 0;
  border: 1px solid var(--faq-border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ink-1);
}

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

.page-faq .side-figure figcaption {
  padding: 12px 16px;
  border-top: 1px solid var(--faq-border);
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-3);
}

/* ---------- 人工客服 ---------- */
.page-faq .assist {
  display: grid;
  gap: 16px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-faq .assist-card {
  padding: clamp(18px, 3vw, 26px);
  border: 1px solid var(--faq-border);
  border-radius: var(--radius);
  background: linear-gradient(150deg, rgba(18, 34, 74, 0.7), rgba(5, 11, 26, 0.92));
  box-shadow: 0 30px 60px -52px rgba(0, 0, 0, 0.9);
}

.page-faq .assist-title {
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 17px;
  color: var(--text);
}

.page-faq .contact-line {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(15px, 2.6vw, 19px);
  letter-spacing: 0.01em;
  color: var(--cyan-soft);
  word-break: break-all;
}

.page-faq .contact-line + .contact-line {
  margin-top: 18px;
}

.page-faq .assist-meta {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--text-3);
}

.page-faq .prep-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .prep-list li {
  position: relative;
  margin-top: 12px;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-2);
}

.page-faq .prep-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .group-nav {
    flex-direction: row;
    align-items: center;
    gap: 22px;
  }

  .page-faq .group-nav-list {
    flex-wrap: wrap;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .qa summary {
    padding: 18px 22px;
  }

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

@media (min-width: 900px) {
  .page-faq .assist {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .side-figure {
    margin-top: 12px;
  }

  .page-faq .group-title {
    max-width: 26ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .qa-mark,
  .page-faq .qa-mark::after,
  .page-faq .group-pill {
    transition: none;
  }
}