.page-faq {
  --faq-rule: 1px solid var(--moss);
  --faq-rule-soft: 1px solid rgba(47, 74, 62, 0.7);
  display: block;
  background: var(--ink);
  color: var(--paper);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 52px 0 40px;
  border-bottom: var(--faq-rule);
  background: var(--ink);
}
.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(120% 90% at 86% 4%, rgba(56, 242, 198, 0.16), transparent 56%),
    linear-gradient(180deg, rgba(14, 36, 28, 0.92), rgba(8, 19, 15, 0) 78%);
  clip-path: polygon(64% 0, 100% 0, 100% 100%, 36% 100%);
  pointer-events: none;
}
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(47, 74, 62, 0.5) 1px, transparent 1px),
    linear-gradient(90deg, rgba(47, 74, 62, 0.5) 1px, transparent 1px);
  background-size: 24px 24px;
  opacity: 0.3;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 78%);
  mask-image: linear-gradient(180deg, #000 0%, transparent 78%);
  pointer-events: none;
}
.page-faq .faq-hero > .shell {
  position: relative;
  z-index: 1;
}
.page-faq .faq-hero-kicker {
  margin: 0 0 18px;
  font-family: var(--font-narrow);
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
}
.page-faq .faq-hero h1 {
  margin: 0 0 20px;
  max-width: 20ch;
  font-size: 32px;
  line-height: 1.14;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--paper);
}
.page-faq .faq-hero-lead {
  margin: 0 0 16px;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--silver);
}
.page-faq .faq-hero-note {
  margin: 0;
  max-width: 60ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--stone);
}
.page-faq .faq-hero-note .link-inline {
  color: var(--cyan);
}

/* ---------- 高频快捷条 ---------- */
.page-faq .faq-quickbar {
  position: sticky;
  top: 0;
  z-index: 4;
  background: rgba(8, 19, 15, 0.96);
  border-bottom: var(--faq-rule);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}
.page-faq .faq-quickbar-inner {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  max-width: var(--shell, 1280px);
  margin: 0 auto;
  padding: 11px var(--pad-x);
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scrollbar-width: none;
}
.page-faq .faq-quickbar-inner::-webkit-scrollbar {
  display: none;
}
.page-faq .faq-quickbar-label {
  flex: 0 0 auto;
  margin-right: 4px;
  padding-right: 12px;
  border-right: var(--faq-rule);
  font-family: var(--font-narrow);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--stone);
}
.page-faq .quick-link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 13px;
  border: var(--faq-rule);
  color: var(--silver);
  font-size: 13px;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}
.page-faq .quick-link::before {
  content: "";
  flex: 0 0 auto;
  width: 5px;
  height: 5px;
  background: var(--orange);
}
.page-faq .quick-link:hover,
.page-faq .quick-link:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan);
  background: rgba(56, 242, 198, 0.07);
  outline: none;
}

/* ---------- 纹理带 ---------- */
.page-faq .faq-texture {
  position: relative;
  height: 128px;
  overflow: hidden;
  border-bottom: var(--faq-rule);
  background: var(--charcoal);
}
.page-faq .faq-texture img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.34;
  filter: saturate(0.5) brightness(0.8);
}
.page-faq .faq-texture::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(8, 19, 15, 0.95), rgba(8, 19, 15, 0.3) 55%, rgba(8, 19, 15, 0.95));
  pointer-events: none;
}

/* ---------- 主体分栏 ---------- */
.page-faq .faq-body {
  padding: 44px 0 72px;
}
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
}
.page-faq .faq-index-title {
  margin: 0 0 14px;
  font-family: var(--font-narrow);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--stone);
}
.page-faq .faq-index-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-faq .faq-index-list li {
  position: relative;
  border-left: var(--faq-rule);
  padding-left: 18px;
}
.page-faq .faq-index-list li::before {
  content: "";
  position: absolute;
  left: -4px;
  top: 20px;
  width: 7px;
  height: 7px;
  background: var(--moss);
  transition: background 0.2s var(--ease), box-shadow 0.2s var(--ease);
}
.page-faq .faq-index-list li:hover::before,
.page-faq .faq-index-list li:focus-within::before {
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(56, 242, 198, 0.16);
}
.page-faq .faq-index-list a {
  display: block;
  padding: 12px 0;
  color: var(--silver);
  font-size: 14px;
  line-height: 1.5;
  text-decoration: none;
  transition: color 0.2s var(--ease);
}
.page-faq .faq-index-list a:hover,
.page-faq .faq-index-list a:focus-visible {
  color: var(--cyan);
  outline: none;
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: 88px;
}
.page-faq .faq-group + .faq-group {
  margin-top: 48px;
}
.page-faq .faq-group-head {
  padding-bottom: 16px;
  border-bottom: var(--faq-rule);
}
.page-faq .faq-group-code {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--clay);
}
.page-faq .faq-group-title {
  margin: 0 0 10px;
  font-size: 21px;
  line-height: 1.32;
  font-weight: 600;
  color: var(--paper);
}
.page-faq .faq-group-lead {
  margin: 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--stone);
}

/* ---------- 折叠问答条目 ---------- */
.page-faq .faq-item {
  border-bottom: var(--faq-rule);
}
.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 16px 0;
  font-size: 16px;
  font-weight: 500;
  line-height: 1.6;
  color: var(--paper);
  cursor: pointer;
  list-style: none;
  transition: color 0.2s var(--ease);
}
.page-faq .faq-item summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item summary::marker {
  content: "";
}
.page-faq .faq-item summary:hover {
  color: var(--cyan);
}
.page-faq .faq-item summary:focus-visible {
  outline: 1px solid var(--cyan);
  outline-offset: 4px;
}
.page-faq .faq-mark {
  position: relative;
  flex: 0 0 auto;
  width: 14px;
  height: 14px;
  margin-left: auto;
  margin-top: 6px;
}
.page-faq .faq-mark::before,
.page-faq .faq-mark::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  transition: transform 0.24s var(--ease), opacity 0.24s var(--ease);
}
.page-faq .faq-mark::before {
  left: 0;
  top: 50%;
  width: 14px;
  height: 1px;
  margin-top: -0.5px;
}
.page-faq .faq-mark::after {
  top: 0;
  left: 50%;
  width: 1px;
  height: 14px;
  margin-left: -0.5px;
}
.page-faq .faq-item[open] .faq-mark::after {
  transform: scaleY(0);
  opacity: 0;
}
.page-faq .faq-answer {
  max-width: 62ch;
  padding: 0 0 20px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--silver);
}
.page-faq .faq-answer p {
  margin: 0 0 12px;
}
.page-faq .faq-answer p:last-child {
  margin-bottom: 0;
}
.page-faq .faq-answer strong {
  color: var(--paper);
  font-weight: 600;
}
.page-faq .list-plain {
  margin: 0 0 12px;
  padding-left: 18px;
  list-style: none;
}
.page-faq .list-plain li {
  position: relative;
  padding: 5px 0;
}
.page-faq .list-plain li::before {
  content: "";
  position: absolute;
  left: -18px;
  top: 14px;
  width: 8px;
  height: 1px;
  background: var(--clay);
}

/* ---------- 编号步骤 ---------- */
.page-faq .step-list {
  counter-reset: faqstep;
  list-style: none;
  margin: 4px 0 14px;
  padding: 0;
}
.page-faq .step-list li {
  counter-increment: faqstep;
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  padding: 14px 0;
  border-top: var(--faq-rule-soft);
  font-size: 15px;
  line-height: 1.78;
  color: var(--silver);
}
.page-faq .step-list li:last-child {
  border-bottom: var(--faq-rule-soft);
}
.page-faq .step-list li::before {
  content: "0" counter(faqstep);
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}
.page-faq .step-list--primary li {
  font-size: 15.5px;
}

/* ---------- 步骤区双栏 ---------- */
.page-faq .faq-steps-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  padding: 22px 0 6px;
}
.page-faq .faq-steps-main {
  min-width: 0;
}
.page-faq .faq-copy-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  padding: 2px 0 8px;
}
.page-faq .faq-steps-figure {
  margin: 0;
}
.page-faq .faq-steps-figure .figure-caption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--stone);
}

/* ---------- 联系方式格 ---------- */
.page-faq .faq-contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 20px 0 4px;
  padding: 0;
  list-style: none;
  background: rgba(47, 74, 62, 0.7);
  border: var(--faq-rule);
}
.page-faq .faq-contact-cell {
  background: var(--deep);
  padding: 16px 18px;
}
.page-faq .faq-contact-label {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-narrow);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--stone);
}
.page-faq .faq-contact-value {
  display: block;
  font-size: 15px;
  line-height: 1.65;
  color: var(--paper);
  overflow-wrap: anywhere;
}

/* ---------- 底部提示 ---------- */
.page-faq .faq-notice {
  margin-top: 56px;
  padding: 22px 22px 22px 24px;
  border: var(--faq-rule);
  border-left: 3px solid var(--orange);
  background: var(--deep);
  display: grid;
  gap: 16px;
}
.page-faq .faq-notice-text {
  margin: 0;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--silver);
}
.page-faq .faq-notice-actions {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.page-faq .faq-notice-actions .btn {
  text-decoration: none;
}

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

@media (min-width: 720px) {
  .page-faq .faq-hero {
    padding: 76px 0 58px;
  }
  .page-faq .faq-hero h1 {
    font-size: 46px;
    max-width: 19ch;
  }
  .page-faq .faq-group-title {
    font-size: 25px;
  }
  .page-faq .faq-texture {
    height: 168px;
  }
  .page-faq .faq-item summary {
    font-size: 17px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-steps-layout {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.85fr);
    gap: 40px;
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: 248px minmax(0, 1fr);
    gap: 64px;
  }
  .page-faq .faq-index {
    position: sticky;
    top: 72px;
    align-self: start;
  }
  .page-faq .faq-body {
    padding: 56px 0 88px;
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-hero h1 {
    font-size: 62px;
    max-width: 17ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
  }
}