.page-faq {
  --faq-line: rgba(18, 34, 74, 0.16);
  --faq-line-soft: rgba(18, 34, 74, 0.09);
  --faq-glow: rgba(18, 194, 180, 0.16);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.75;
  overflow-x: hidden;
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-topbar {
  padding: 18px clamp(16px, 4vw, 40px) 0;
}

.page-faq .faq-topbar .yf-crumb {
  font-size: 0.8125rem;
  color: var(--muted);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background: var(--indigo);
  color: var(--paper-2);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 252, 247, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 252, 247, 0.045) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--red) 0 34%, var(--gold) 34% 67%, var(--cyan) 67% 100%);
}

.page-faq .faq-hero__grid {
  position: relative;
  z-index: 1;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 44px clamp(16px, 4vw, 40px) 48px;
  display: grid;
  gap: 32px;
  align-items: center;
}

.page-faq .faq-hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-faq .faq-hero__eyebrow span {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 2px;
  background: var(--red);
  color: #fff;
  letter-spacing: 0.06em;
}

.page-faq .faq-hero__title {
  margin: 0 0 18px;
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(1.85rem, 5vw, 3.15rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--paper-2);
}

.page-faq .faq-hero__lead {
  max-width: 48ch;
  margin: 0 0 28px;
  font-size: 1rem;
  color: rgba(255, 252, 247, 0.78);
}

.page-faq .faq-hero__facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: rgba(255, 252, 247, 0.16);
  border: 1px solid rgba(255, 252, 247, 0.16);
  border-radius: 3px;
  overflow: hidden;
}

.page-faq .faq-hero__facts > li {
  background: rgba(255, 252, 247, 0.05);
  padding: 14px 16px;
}

.page-faq .faq-fact__k {
  display: block;
  margin-bottom: 6px;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .faq-fact__v {
  display: block;
  font-size: 0.9rem;
  line-height: 1.55;
  color: var(--paper-2);
}

.page-faq .faq-hero__fig {
  margin: 0;
}

.page-faq .faq-hero__fig img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: 3px;
}

.page-faq .faq-hero__fig figcaption {
  margin-top: 12px;
  font-family: var(--mono);
  font-size: 0.72rem;
  line-height: 1.7;
  letter-spacing: 0.04em;
  color: rgba(255, 252, 247, 0.58);
}

/* ---------- 主体布局 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: 24px;
  padding: 32px clamp(16px, 4vw, 40px) 72px;
}

/* ---------- 分组索引 ---------- */
.page-faq .faq-index {
  position: sticky;
  top: var(--topbar-h);
  z-index: 6;
  margin: 0 calc(-1 * clamp(16px, 4vw, 40px));
  padding: 10px clamp(16px, 4vw, 40px);
  background: var(--paper);
  border-bottom: 1px solid var(--faq-line-soft);
}

.page-faq .faq-index__title {
  margin: 0 0 8px;
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-index__list::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-index__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border: 1px solid var(--faq-line);
  border-radius: 999px;
  background: var(--paper-2);
  color: var(--indigo);
  font-size: 0.8125rem;
  white-space: nowrap;
  text-decoration: none;
  transition: border-color 0.25s var(--ease), background-color 0.25s var(--ease), color 0.25s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  border-color: var(--cyan);
  background: var(--faq-glow);
  color: var(--indigo-deep);
}

.page-faq .faq-index__no {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--red);
}

/* ---------- 问题分组 ---------- */
.page-faq .faq-group {
  margin: 0 0 44px;
  scroll-margin-top: calc(var(--topbar-h) + 72px);
}

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

.page-faq .faq-group__head {
  display: grid;
  gap: 8px;
  padding-top: 14px;
  margin-bottom: 20px;
  border-top: 3px solid var(--red);
}

.page-faq .faq-group__no {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--red);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(1.3rem, 4vw, 1.85rem);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--indigo);
}

.page-faq .faq-group__lead {
  margin: 0;
  max-width: 62ch;
  font-size: 0.9375rem;
  color: var(--muted);
}

.page-faq .faq-group--s2 .faq-group__head { border-top-color: var(--gold); }
.page-faq .faq-group--s2 .faq-group__no { color: #a97a1f; }
.page-faq .faq-group--s3 .faq-group__head { border-top-color: var(--cyan); }
.page-faq .faq-group--s3 .faq-group__no { color: #0d8d83; }
.page-faq .faq-group--s4 .faq-group__head { border-top-color: var(--grape); }
.page-faq .faq-group--s4 .faq-group__no { color: var(--grape); }
.page-faq .faq-group--s5 .faq-group__head { border-top-color: var(--red-deep); }
.page-faq .faq-group--s5 .faq-group__no { color: var(--red-deep); }
.page-faq .faq-group--s6 .faq-group__head { border-top-color: var(--indigo-2); }
.page-faq .faq-group--s6 .faq-group__no { color: var(--indigo-2); }

/* ---------- 折叠问题卡 ---------- */
.page-faq .faq-item {
  margin-bottom: 12px;
  background: var(--paper-2);
  border: 1px solid var(--faq-line-soft);
  border-left: 3px solid var(--muted);
  border-radius: 3px;
  box-shadow: var(--shadow-tag);
  transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.page-faq .faq-item:hover {
  box-shadow: var(--shadow-tag-hover);
}

.page-faq .faq-item[open] {
  border-left-color: var(--cyan);
}

.page-faq .faq-group--s1 .faq-item[open] { border-left-color: var(--red); }
.page-faq .faq-group--s2 .faq-item[open] { border-left-color: var(--gold); }
.page-faq .faq-group--s4 .faq-item[open] { border-left-color: var(--grape); }
.page-faq .faq-group--s5 .faq-item[open] { border-left-color: var(--red-deep); }

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 0.9688rem;
  font-weight: 600;
  line-height: 1.6;
  color: var(--indigo);
}

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

.page-faq .faq-item__q::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--mono);
  font-size: 1.05rem;
  line-height: 1.4;
  color: var(--cyan);
}

.page-faq .faq-item[open] .faq-item__q::after {
  content: "–";
}

.page-faq .faq-item__qn {
  flex: none;
  padding-top: 3px;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-faq .faq-item__qt {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-item__body {
  padding: 0 16px 18px;
  border-top: 1px dashed var(--faq-line-soft);
  font-size: 0.9375rem;
  color: var(--ink);
}

.page-faq .faq-item__body > p {
  margin: 12px 0 0;
}

.page-faq .faq-item__ans {
  margin: 14px 0 0;
  padding-left: 12px;
  border-left: 3px solid var(--gold);
  font-weight: 600;
  line-height: 1.7;
  color: var(--indigo);
}

.page-faq .faq-item__list {
  margin: 12px 0 0;
  padding-left: 20px;
  display: grid;
  gap: 7px;
}

.page-faq .faq-item__list li::marker {
  color: var(--red);
}

.page-faq .faq-item__list strong {
  color: var(--indigo);
}

.page-faq .faq-steps {
  counter-reset: faqstep;
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-faq .faq-steps > li {
  counter-increment: faqstep;
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
}

.page-faq .faq-steps > li::before {
  content: counter(faqstep, decimal-leading-zero);
  height: 22px;
  margin-top: 3px;
  border-radius: 2px;
  background: var(--indigo);
  color: var(--paper-2);
  font-family: var(--mono);
  font-size: 0.7rem;
  line-height: 22px;
  text-align: center;
}

/* ---------- 信息图 ---------- */
.page-faq .faq-figure {
  margin: 20px 0 0;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
  border: 1px solid var(--faq-line-soft);
  border-radius: 3px;
  background: var(--paper-2);
}

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 联系区块 ---------- */
.page-faq .faq-contact {
  position: relative;
  overflow: hidden;
  padding: 24px 18px 26px;
  border-radius: 4px;
  background: var(--indigo);
  color: var(--paper-2);
}

.page-faq .faq-contact::after {
  content: "";
  position: absolute;
  right: -40px;
  top: -40px;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(18, 194, 180, 0.28), transparent 68%);
  pointer-events: none;
}

.page-faq .faq-channels {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  display: grid;
  gap: 1px;
  background: rgba(255, 252, 247, 0.16);
  border: 1px solid rgba(255, 252, 247, 0.16);
  border-radius: 3px;
  overflow: hidden;
}

.page-faq .faq-channel {
  padding: 15px 16px 17px;
  background: rgba(255, 252, 247, 0.05);
}

.page-faq .faq-channel__k {
  display: block;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-faq .faq-channel__v {
  display: block;
  margin-top: 8px;
  font-size: 0.9688rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--paper-2);
  word-break: break-word;
}

.page-faq .faq-channel__n {
  display: block;
  margin-top: 6px;
  font-size: 0.8125rem;
  line-height: 1.6;
  color: rgba(255, 252, 247, 0.62);
}

.page-faq .faq-contact__actions {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .faq-contact__note {
  position: relative;
  z-index: 1;
  margin: 18px 0 0;
  font-size: 0.8125rem;
  line-height: 1.8;
  color: rgba(255, 252, 247, 0.68);
}

.page-faq .faq-contact__note a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-hero__facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-channels {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-contact {
    padding: 28px 26px 30px;
  }

  .page-faq .faq-item__q {
    padding: 17px 20px;
  }

  .page-faq .faq-item__body {
    padding: 0 20px 22px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: 52px;
    padding-top: 68px;
    padding-bottom: 68px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-body {
    grid-template-columns: 216px minmax(0, 1fr);
    grid-gap: 56px;
    gap: 56px;
    padding-top: 64px;
    padding-bottom: 96px;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 36px;
    margin: 0;
    padding: 0;
    background: transparent;
    border-bottom: 0;
  }

  .page-faq .faq-index__title {
    margin-bottom: 12px;
    color: var(--indigo);
  }

  .page-faq .faq-index__list {
    display: grid;
    gap: 0;
    padding: 0;
    overflow: visible;
  }

  .page-faq .faq-index__link {
    display: flex;
    align-items: baseline;
    gap: 10px;
    padding: 9px 0 9px 14px;
    border: 0;
    border-left: 2px solid var(--hair);
    border-radius: 0;
    background: transparent;
    font-size: 0.875rem;
    white-space: normal;
    line-height: 1.5;
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    border-left-color: var(--cyan);
    background: linear-gradient(90deg, var(--faq-glow), transparent);
    color: var(--indigo-deep);
  }

  .page-faq .faq-group {
    scroll-margin-top: 40px;
    margin-bottom: 56px;
  }
}