.page-faq {
  --faq-cut: 14px;
  --faq-rail: 236px;
  background: var(--paper);
  color: var(--graphite);
  padding-bottom: clamp(56px, 9vw, 104px);
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumb {
  padding: 18px 0 14px;
}
.page-faq .faq-crumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 13.5px;
}
.page-faq .faq-crumb li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--graphite);
  opacity: 0.78;
}
.page-faq .faq-crumb li + li::before {
  content: "/";
  color: var(--mist);
}
.page-faq .faq-crumb a {
  color: var(--deep-sea);
  text-decoration: none;
  opacity: 1;
}
.page-faq .faq-crumb a:hover {
  text-decoration: underline;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(110% 90% at 92% -12%, rgba(53, 240, 208, 0.18), transparent 62%),
    radial-gradient(82% 80% at 4% 112%, rgba(255, 107, 74, 0.16), transparent 64%),
    var(--ink-night);
  color: var(--paper);
}
.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(143, 166, 191, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(143, 166, 191, 0.08) 1px, transparent 1px);
  background-size: 46px 46px;
  pointer-events: none;
}
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: clamp(24px, 4.5vw, 54px);
  background: var(--paper);
  clip-path: polygon(0 100%, 100% 0, 100% 100%);
}
.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(26px, 4vw, 44px);
  padding: clamp(24px, 4vw, 46px) 0 clamp(66px, 9vw, 108px);
}
.page-faq .faq-hero__label {
  display: inline-block;
  margin: 0 0 18px;
  padding: 5px 12px;
  border: 1px solid rgba(53, 240, 208, 0.55);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--neon-cyan);
}
.page-faq .faq-hero__title {
  margin: 0 0 18px;
  max-width: 17em;
  font-size: clamp(29px, 5.1vw, 52px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.02em;
}
.page-faq .faq-hero__title em {
  display: inline-block;
  font-style: normal;
  transform: skewX(-6deg);
  color: var(--neon-cyan);
}
.page-faq .faq-hero__lead {
  margin: 0 0 26px;
  max-width: 42em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: rgba(246, 241, 231, 0.84);
}
.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.page-faq .faq-hero .ly-btn--ghost {
  border-color: rgba(246, 241, 231, 0.42);
  color: var(--paper);
}
.page-faq .faq-hero__panel {
  padding: 22px 20px;
  background: rgba(255, 253, 248, 0.055);
  border: 1px solid var(--line-dark);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--faq-cut)), calc(100% - var(--faq-cut)) 100%, 0 100%);
}
.page-faq .faq-hero__paneltitle {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mist);
}
.page-faq .faq-hero__facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 13px;
}
.page-faq .faq-hero__facts li {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding-bottom: 13px;
  border-bottom: 1px dashed rgba(143, 166, 191, 0.24);
}
.page-faq .faq-hero__facts li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}
.page-faq .faq-hero__factnum {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 16px;
  font-weight: 800;
  color: var(--neon-cyan);
}
.page-faq .faq-hero__factcap {
  font-size: 13.5px;
  line-height: 1.6;
  color: rgba(246, 241, 231, 0.78);
}

/* ---------- 主体骨架 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
  margin-top: clamp(34px, 5.5vw, 64px);
}

/* ---------- 场景目录 ---------- */
.page-faq .faq-rail__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mist);
}
.page-faq .faq-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}
.page-faq .faq-rail__link {
  display: block;
  padding: 9px 10px 9px 12px;
  border-left: 2px solid transparent;
  border-radius: 0 3px 3px 0;
  font-size: 14px;
  line-height: 1.45;
  color: var(--graphite);
  text-decoration: none;
  transition: background 180ms var(--ease), border-color 180ms var(--ease), color 180ms var(--ease);
}
.page-faq .faq-rail__link:hover {
  background: rgba(223, 247, 242, 0.72);
  border-left-color: var(--coral);
  color: var(--deep-sea);
}
.page-faq .faq-rail__link:focus-visible {
  outline: 2px solid var(--neon-cyan);
  outline-offset: 2px;
}

/* ---------- 章节 ---------- */
.page-faq .faq-chapter {
  scroll-margin-top: 92px;
  padding-bottom: clamp(30px, 4.5vw, 58px);
  margin-bottom: clamp(30px, 4.5vw, 58px);
  border-bottom: 1px solid var(--line);
}
.page-faq .faq-chapter:last-child {
  padding-bottom: 0;
  margin-bottom: 0;
  border-bottom: 0;
}
.page-faq .faq-chapter .ly-section__head {
  margin-bottom: clamp(18px, 2.6vw, 28px);
}
.page-faq .ly-section__index {
  display: inline-block;
  margin: 0 0 6px;
  padding-right: 6px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(34px, 5.6vw, 60px);
  font-weight: 800;
  line-height: 0.9;
  letter-spacing: -0.05em;
  color: var(--deep-sea);
  transform: skewX(-6deg);
}
.page-faq .ly-section__title {
  margin: 0 0 10px;
  font-size: clamp(21px, 3.1vw, 31px);
  font-weight: 800;
  line-height: 1.26;
  letter-spacing: -0.01em;
  color: var(--graphite);
}
.page-faq .ly-section__lead {
  margin: 0;
  max-width: 44em;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--graphite);
  opacity: 0.86;
}

/* ---------- 三步自查节点 ---------- */
.page-faq .faq-nodes {
  list-style: none;
  margin: 0 0 clamp(22px, 3.5vw, 34px);
  padding: 0;
  display: grid;
  gap: var(--gap);
}
.page-faq .faq-node {
  position: relative;
  padding: 20px 18px 18px;
  background: var(--paper-white);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
}
.page-faq .faq-node__idx {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 24px;
  font-weight: 800;
  line-height: 1;
  color: var(--deep-sea);
}
.page-faq .faq-node__title {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 800;
  line-height: 1.4;
  color: var(--graphite);
}
.page-faq .faq-node__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--graphite);
  opacity: 0.86;
}

/* ---------- 插图 ---------- */
.page-faq .faq-figure {
  margin: clamp(22px, 3.4vw, 36px) 0 0;
}
.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--deep-sea);
}
.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--graphite);
  opacity: 0.72;
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-accordion {
  display: grid;
  gap: 10px;
}
.page-faq .faq-item {
  position: relative;
  background: var(--paper-white);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
  transition: border-color 180ms var(--ease);
}
.page-faq .faq-item[open] {
  border-color: rgba(18, 58, 99, 0.34);
}
.page-faq .faq-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--neon-cyan);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform 180ms var(--ease);
}
.page-faq .faq-item[open]::before {
  transform: scaleY(1);
}
.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 17px 20px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--graphite);
  transition: background 180ms var(--ease), color 180ms var(--ease);
}
.page-faq .faq-item__q::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item__q:hover {
  background: rgba(223, 247, 242, 0.55);
}
.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--neon-cyan);
  outline-offset: -2px;
}
.page-faq .faq-item[open] .faq-item__q {
  color: var(--deep-sea);
}
.page-faq .faq-item__qnum {
  flex: 0 0 auto;
  margin-top: 2px;
  padding: 3px 6px;
  border-radius: 2px;
  background: var(--mist-cyan);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12.5px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--deep-sea);
}
.page-faq .faq-item__qtxt {
  flex: 1 1 auto;
  min-width: 0;
}
.page-faq .faq-item__q::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 19px;
  line-height: 1.2;
  color: var(--mist);
  transition: color 180ms var(--ease);
}
.page-faq .faq-item[open] .faq-item__q::after {
  content: "\2013";
  color: var(--coral);
}
.page-faq .faq-item__a {
  margin: 0 20px 20px;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
}
.page-faq .faq-item__conclusion {
  margin: 0 0 12px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.68;
  color: var(--deep-sea);
}
.page-faq .faq-item__verdict {
  display: inline-block;
  margin-right: 8px;
  padding: 2px 7px;
  border: 1px solid var(--deep-sea);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  vertical-align: 1px;
}
.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
  counter-reset: faqstep;
}
.page-faq .faq-steps > li {
  position: relative;
  padding-left: 38px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--graphite);
}
.page-faq .faq-steps > li::before {
  counter-increment: faqstep;
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 3px;
  padding: 2px 5px;
  border-radius: 2px;
  background: var(--mist-cyan);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12.5px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--deep-sea);
}

/* ---------- 小屏章节的图文并排 ---------- */
.page-faq .faq-figure--tall {
  margin-top: clamp(18px, 3vw, 28px);
}

/* ---------- 联系方式区 ---------- */
.page-faq .faq-contact {
  position: relative;
  overflow: hidden;
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  padding: clamp(22px, 3vw, 32px);
  background: var(--ink-night);
  color: var(--paper);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}
.page-faq .faq-contact::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(90% 70% at 88% 0%, rgba(53, 240, 208, 0.14), transparent 60%);
  pointer-events: none;
}
.page-faq .faq-contact > * {
  position: relative;
  z-index: 1;
}
.page-faq .faq-contact__h {
  margin: 0 0 12px;
  font-size: clamp(17px, 2.2vw, 21px);
  font-weight: 800;
  line-height: 1.4;
  color: var(--paper);
}
.page-faq .faq-contact__p {
  margin: 0 0 16px;
  max-width: 34em;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(246, 241, 231, 0.82);
}
.page-faq .faq-copy {
  display: inline-block;
  max-width: 100%;
  padding: 10px 14px;
  border: 0;
  border-radius: 3px;
  background: var(--neon-cyan);
  font-family: var(--font-mono);
  font-size: 13.5px;
  font-weight: 700;
  color: var(--ink-night);
  overflow-wrap: anywhere;
  cursor: pointer;
  transition: filter 180ms var(--ease), background 180ms var(--ease), color 180ms var(--ease);
}
.page-faq .faq-copy:hover {
  filter: brightness(1.08);
}
.page-faq .faq-copy:focus-visible {
  outline: 2px solid var(--coral);
  outline-offset: 2px;
}
.page-faq .faq-copy[data-copied="true"] {
  background: var(--amber);
  color: var(--ink-night);
}
.page-faq .faq-contact__hint {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}
.page-faq .faq-contact__link {
  display: inline-block;
  margin-top: 18px;
  padding-bottom: 2px;
  border-bottom: 1px solid rgba(53, 240, 208, 0.42);
  font-size: 14.5px;
  color: var(--neon-cyan);
  text-decoration: none;
}
.page-faq .faq-contact__link:hover {
  border-bottom-color: var(--neon-cyan);
}
.page-faq .faq-contact__link:focus-visible {
  outline: 2px solid var(--neon-cyan);
  outline-offset: 3px;
}
.page-faq .faq-contact__side .faq-contact__h {
  font-size: 15px;
  letter-spacing: 0.02em;
}
.page-faq .faq-contact__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.page-faq .faq-contact__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14.5px;
  line-height: 1.72;
  color: rgba(246, 241, 231, 0.85);
}
.page-faq .faq-contact__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 7px;
  height: 7px;
  background: var(--neon-cyan);
  transform: rotate(45deg);
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 768px) {
  .page-faq .faq-nodes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 800px) {
  .page-faq .faq-contact {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 0.85fr);
    align-items: end;
  }
  .page-faq .faq-media-split {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.82fr);
    gap: clamp(20px, 3vw, 36px);
    align-items: start;
  }
  .page-faq .faq-figure--tall {
    margin-top: 0;
  }
}

@media (min-width: 1025px) {
  .page-faq .faq-body {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    align-items: start;
  }
  .page-faq .faq-rail {
    position: sticky;
    top: 88px;
  }
}

/* ---------- 窄屏 ---------- */
@media (max-width: 1024px) {
  .page-faq .faq-rail {
    padding-bottom: 10px;
    border-bottom: 1px solid var(--line);
  }
  .page-faq .faq-rail__title {
    margin-bottom: 8px;
  }
  .page-faq .faq-rail__list {
    display: flex;
    gap: 6px;
    overflow-x: auto;
    padding-bottom: 6px;
    scrollbar-width: thin;
  }
  .page-faq .faq-rail__list li {
    flex: 0 0 auto;
  }
  .page-faq .faq-rail__link {
    padding: 7px 13px;
    border: 1px solid var(--line);
    border-left: 1px solid var(--line);
    border-radius: 999px;
    background: var(--paper-white);
    font-size: 13px;
    white-space: nowrap;
  }
  .page-faq .faq-rail__link:hover {
    border-color: var(--coral);
  }
}

@media (max-width: 640px) {
  .page-faq .faq-hero__title {
    max-width: none;
  }
  .page-faq .faq-hero__facts li {
    grid-template-columns: 68px minmax(0, 1fr);
    gap: 10px;
  }
  .page-faq .faq-item__q {
    padding: 15px 16px;
    font-size: 15px;
    gap: 10px;
  }
  .page-faq .faq-item__a {
    margin: 0 16px 18px;
  }
  .page-faq .faq-steps > li {
    padding-left: 34px;
  }
  .page-faq .faq-contact {
    padding: 20px 18px;
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item::before,
  .page-faq .faq-item__q,
  .page-faq .faq-item__q::after,
  .page-faq .faq-rail__link,
  .page-faq .faq-copy {
    transition: opacity 120ms linear;
  }
  .page-faq .faq-item::before {
    transition: none;
  }
}