.page-faq {
  --faq-index-w: 280px;
  --faq-shadow: 8px 8px 0 rgba(7, 22, 18, 0.85);
  padding-bottom: 72px;
  background-image:
    repeating-linear-gradient(90deg, rgba(55, 226, 198, 0.05) 0 1px, transparent 1px 120px),
    repeating-linear-gradient(0deg, rgba(36, 84, 70, 0.18) 0 1px, transparent 1px 240px);
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-head-wrap {
  padding-top: 20px;
}

.page-faq .faq-crumb {
  margin-bottom: 16px;
}

/* ---------- 首屏框景 ---------- */
.page-faq .faq-hero {
  position: relative;
  display: grid;
  gap: 20px;
  padding: clamp(20px, 4vw, 40px);
  border: 2px solid var(--line);
  background:
    radial-gradient(circle at 88% 8%, rgba(55, 226, 198, 0.14), transparent 46%),
    linear-gradient(180deg, rgba(16, 46, 38, 0.96), rgba(10, 31, 26, 0.94));
  box-shadow: var(--faq-shadow);
}

.page-faq .faq-hero::before,
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  border: 2px solid var(--cyan);
}

.page-faq .faq-hero::before {
  top: -2px;
  left: -2px;
  border-right: 0;
  border-bottom: 0;
}

.page-faq .faq-hero::after {
  right: -2px;
  bottom: -2px;
  border-top: 0;
  border-left: 0;
}

.page-faq .faq-hero-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-faq .faq-hero-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 0 3px rgba(243, 169, 60, 0.18);
}

.page-faq .faq-hero-main h1 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(28px, 5vw, 50px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-hero-main .lede {
  max-width: 34em;
  margin: 0 0 18px;
  color: var(--mist);
  font-size: 16px;
  line-height: 1.75;
}

.page-faq .faq-hero-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero-jump a {
  display: inline-block;
  padding: 6px 12px;
  border: 1px solid var(--line);
  color: var(--paper);
  font-size: 14px;
  text-decoration: none;
  transition: border-color 120ms var(--ease), color 120ms var(--ease), background 120ms var(--ease);
}

.page-faq .faq-hero-jump a:hover,
.page-faq .faq-hero-jump a:focus-visible {
  border-color: var(--cyan);
  background: rgba(55, 226, 198, 0.12);
  color: var(--cyan);
}

.page-faq .faq-hero-side {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 10px;
  align-content: start;
}

.page-faq .faq-metric {
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--amber);
  background: rgba(10, 31, 26, 0.7);
}

.page-faq .faq-metric span {
  display: block;
  font-size: 15px;
  color: var(--amber-soft);
  margin-bottom: 4px;
}

.page-faq .faq-metric p {
  margin: 0;
  font-size: 13px;
  line-height: 1.5;
  color: var(--mist);
}

/* ---------- 高频问题 ---------- */
.page-faq .faq-hot {
  margin-top: clamp(32px, 6vw, 56px);
}

.page-faq .faq-sec-head {
  display: grid;
  gap: 6px;
  margin-bottom: 20px;
}

.page-faq .faq-sec-num {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-faq .faq-sec-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 3.4vw, 32px);
  line-height: 1.2;
  color: var(--paper);
}

.page-faq .faq-sec-head p {
  margin: 0;
  font-size: 14px;
}

.page-faq .faq-hot-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hot-item {
  position: relative;
  padding: 16px 16px 14px 18px;
  border: 1px solid var(--line);
  border-top: 3px solid var(--violet);
  background: var(--panel-2);
  transition: transform 180ms var(--ease), border-color 180ms var(--ease);
}

.page-faq .faq-hot-item:hover {
  transform: translateY(-2px);
  border-color: var(--line);
  border-top-color: var(--cyan);
}

.page-faq .faq-hot-num {
  display: inline-block;
  margin-bottom: 8px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--violet);
}

.page-faq .faq-hot-item h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.35;
  color: var(--paper);
}

.page-faq .faq-hot-item p {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-hot-link {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px dashed rgba(55, 226, 198, 0.5);
}

.page-faq .faq-hot-link:hover,
.page-faq .faq-hot-link:focus-visible {
  color: var(--amber-soft);
  border-bottom-color: var(--amber-soft);
}

/* ---------- 分屏主体 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: 24px;
  margin-top: clamp(36px, 6vw, 60px);
}

.page-faq .faq-index {
  padding: 16px;
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: 4px 4px 0 rgba(7, 22, 18, 0.7);
}

.page-faq .faq-index-head {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-faq .faq-index-list {
  display: flex;
  gap: 8px;
  margin: 12px 0 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-index-list li {
  flex: 0 0 auto;
}

.page-faq .faq-index-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  background: var(--panel-2);
  color: var(--paper);
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 120ms var(--ease), background 120ms var(--ease);
}

.page-faq .faq-index-link:hover,
.page-faq .faq-index-link:focus-visible {
  border-color: var(--cyan);
  background: rgba(55, 226, 198, 0.12);
}

.page-faq .faq-index-num {
  font-size: 12px;
  color: var(--amber);
}

.page-faq .faq-index-note {
  margin: 12px 0 14px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--mist);
}

.page-faq .faq-index-cta {
  display: inline-block;
}

/* ---------- 筛选 ---------- */
.page-faq .faq-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
  padding-bottom: 18px;
  border-bottom: 1px dashed var(--line);
}

.page-faq .faq-filters .chip {
  font-family: var(--font-body);
  font-size: 13px;
}

/* ---------- 场景组 ---------- */
.page-faq .faq-group {
  margin-bottom: 40px;
  scroll-margin-top: calc(var(--top-h) + 20px);
}

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

.page-faq .faq-group:not(:has(.faq-q:not(.is-hidden))) {
  display: none;
}

.page-faq .faq-group-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 12px;
  padding-bottom: 10px;
  margin-bottom: 16px;
  border-bottom: 2px solid var(--line);
}

.page-faq .faq-group-num {
  font-size: 26px;
  line-height: 1;
  color: var(--cyan);
}

.page-faq .faq-group-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 22px;
  line-height: 1.2;
  color: var(--paper);
}

.page-faq .faq-group-note {
  margin: 0;
  flex: 1 1 180px;
  font-size: 13px;
  color: var(--mist);
}

/* ---------- 图 ---------- */
.page-faq .faq-figure {
  margin: 0 0 20px;
  padding: 10px;
  border: 1px solid var(--line);
  background: var(--ink-deep);
  box-shadow: var(--faq-shadow);
}

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

.page-faq .faq-figure figcaption {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--mist);
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-q {
  margin-bottom: 10px;
  border: 1px solid var(--line);
  background: var(--panel-2);
  transition: border-color 220ms var(--ease), background 220ms var(--ease), box-shadow 220ms var(--ease);
}

.page-faq .faq-q[open] {
  border-color: var(--cyan);
  background: var(--panel);
  box-shadow: 4px 4px 0 rgba(7, 22, 18, 0.85);
}

.page-faq .faq-q summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.45;
  color: var(--paper);
}

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

.page-faq .faq-q summary::after {
  content: "+";
  margin-left: auto;
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1.2;
  color: var(--cyan);
}

.page-faq .faq-q[open] summary::after {
  content: "−";
}

.page-faq .faq-q summary:hover .faq-q-text,
.page-faq .faq-q summary:focus-visible .faq-q-text {
  color: var(--cyan);
}

.page-faq .faq-q-num {
  flex: 0 0 auto;
  font-size: 12px;
  line-height: 1.9;
  color: var(--amber);
}

.page-faq .faq-q-text {
  flex: 1 1 auto;
  transition: color 120ms var(--ease);
}

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

.page-faq .faq-verdict {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin: 0 0 14px;
  padding: 10px 12px;
  border-left: 3px solid var(--cyan);
  background: rgba(55, 226, 198, 0.08);
  font-size: 15px;
  line-height: 1.7;
  color: var(--paper);
}

.page-faq .faq-verdict-key {
  flex: 0 0 auto;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--cyan);
  padding-top: 3px;
}

.page-faq .faq-steps {
  counter-reset: faqstep;
  display: grid;
  gap: 8px;
  margin: 0 0 12px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-steps li {
  position: relative;
  padding-left: 36px;
  font-size: 15px;
  line-height: 1.72;
  color: var(--mist);
}

.page-faq .faq-steps li::before {
  counter-increment: faqstep;
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  padding: 1px 5px;
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--cyan);
}

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

.page-faq .faq-refer a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px dashed rgba(55, 226, 198, 0.5);
}

.page-faq .faq-refer a:hover,
.page-faq .faq-refer a:focus-visible {
  color: var(--amber-soft);
  border-bottom-color: var(--amber-soft);
}

/* ---------- 留言指引 ---------- */
.page-faq .faq-help {
  display: grid;
  gap: 24px;
  margin-top: clamp(40px, 7vw, 64px);
  padding: clamp(20px, 4vw, 36px);
  border: 2px solid var(--line);
  background:
    linear-gradient(160deg, rgba(16, 46, 38, 0.98), rgba(10, 31, 26, 0.96));
  box-shadow: var(--faq-shadow);
  scroll-margin-top: calc(var(--top-h) + 20px);
}

.page-faq .faq-help-kicker {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--amber);
}

.page-faq .faq-help-main h2 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 3.4vw, 30px);
  line-height: 1.22;
  color: var(--paper);
}

.page-faq .faq-help-lede {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .faq-template {
  counter-reset: tpl;
  display: grid;
  gap: 8px;
  margin: 0 0 14px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-template li {
  position: relative;
  padding: 8px 10px 8px 40px;
  border: 1px solid var(--line);
  background: rgba(10, 31, 26, 0.6);
  font-size: 14px;
  line-height: 1.65;
  color: var(--paper);
}

.page-faq .faq-template li::before {
  counter-increment: tpl;
  content: counter(tpl, decimal-leading-zero);
  position: absolute;
  left: 10px;
  top: 9px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--amber);
}

.page-faq .faq-help-note {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-help-note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px dashed rgba(55, 226, 198, 0.5);
}

.page-faq .faq-help-note a:hover,
.page-faq .faq-help-note a:focus-visible {
  color: var(--amber-soft);
  border-bottom-color: var(--amber-soft);
}

.page-faq .faq-help-side {
  padding: 18px;
  border: 1px solid var(--line);
  border-top: 3px solid var(--cyan);
  background: var(--panel-2);
}

.page-faq .faq-contact-list {
  display: grid;
  gap: 8px;
}

.page-faq .faq-contact-list .copy-line {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line);
  background: rgba(10, 31, 26, 0.75);
  text-align: left;
  cursor: pointer;
  transition: border-color 120ms var(--ease), background 120ms var(--ease);
}

.page-faq .faq-contact-list .copy-line:hover,
.page-faq .faq-contact-list .copy-line:focus-visible {
  border-color: var(--cyan);
  background: rgba(55, 226, 198, 0.1);
}

.page-faq .faq-contact-list .copy-line-key {
  flex: 0 0 auto;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--amber);
}

.page-faq .faq-contact-list .copy-line-value {
  flex: 1 1 auto;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-faq .faq-contact-list .copy-line-hint {
  flex: 0 0 auto;
  font-size: 12px;
  color: var(--cyan);
}

.page-faq .faq-contact-note {
  margin: 14px 0 16px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-help-cta {
  display: inline-block;
}

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

/* ---------- 桌面分屏 ---------- */
@media (min-width: 1000px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1fr) 250px;
    align-items: start;
    gap: 24px 32px;
  }

  .page-faq .faq-hero-bar {
    grid-column: 1 / -1;
  }

  .page-faq .faq-hot-list {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-faq .faq-body {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: 40px;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--top-h) + 24px);
  }

  .page-faq .faq-index-list {
    flex-direction: column;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-index-link {
    width: 100%;
  }

  .page-faq .faq-index-link:hover,
  .page-faq .faq-index-link:focus-visible {
    box-shadow: inset 3px 0 0 var(--cyan);
  }

  .page-faq .faq-help {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: start;
    gap: 32px;
  }
}

/* ---------- 减少动态 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-hot-item,
  .page-faq .faq-q,
  .page-faq .faq-hero-jump a,
  .page-faq .faq-index-link,
  .page-faq .faq-q-text,
  .page-faq .copy-line {
    transition: none;
  }

  .page-faq .faq-hot-item:hover {
    transform: none;
  }
}