.page-faq {
  --faq-rail-w: 268px;
  --faq-gap: clamp(30px, 5vw, 64px);
  background: var(--abyss);
  color: var(--mist);
  padding-bottom: clamp(56px, 9vw, 112px);
}

.page-faq .breadcrumb {
  padding-top: clamp(18px, 4vw, 34px);
}

.page-faq .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--aqua-gray);
}

.page-faq .breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  margin-right: 8px;
  color: var(--grid-line);
}

.page-faq .breadcrumb-link {
  color: var(--aqua-gray);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .breadcrumb-link:hover,
.page-faq .breadcrumb-link:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
  padding-top: clamp(22px, 4vw, 44px);
  padding-bottom: clamp(30px, 5vw, 60px);
  border-bottom: 1px solid var(--grid-line);
}

.page-faq .faq-hero-copy {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.page-faq .faq-hero .eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.28em;
  color: var(--cyan);
}

.page-faq .faq-hero .eyebrow::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--cyan);
}

.page-faq .faq-hero h1 {
  margin: 0;
  font-size: clamp(30px, 7vw, 56px);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: -0.04em;
  color: var(--mist);
  max-width: 16em;
}

.page-faq .faq-hero .lede {
  margin: 0;
  max-width: 640px;
  font-size: clamp(15px, 2.3vw, 17px);
  line-height: 1.75;
  color: var(--aqua-gray);
}

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-ticker {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 18px 0 0;
  list-style: none;
  border-top: 1px solid var(--grid-line);
}

.page-faq .faq-ticker li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--aqua-gray);
}

.page-faq .faq-ticker b {
  font-family: var(--font-num);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--lemon);
  flex: none;
}

.page-faq .faq-hero-media {
  margin: 0;
  border: 1px solid var(--grid-line);
  background: linear-gradient(150deg, var(--teal), var(--abyss) 72%);
}

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

.page-faq .media-caption {
  display: block;
  padding: 10px 14px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--aqua-gray);
  border-top: 1px solid var(--grid-line);
}

/* ---------- 主体分栏 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: var(--faq-gap);
  padding-top: clamp(32px, 6vw, 64px);
}

.page-faq .faq-rail {
  min-width: 0;
}

.page-faq .faq-rail-title {
  margin: 0 0 12px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.24em;
  color: var(--aqua-gray);
}

.page-faq .faq-index {
  display: flex;
  flex-direction: column;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--grid-line);
}

.page-faq .faq-index a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 2px;
  font-size: 15px;
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid var(--grid-line);
  transition: color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}

.page-faq .faq-index a:hover,
.page-faq .faq-index a:focus-visible {
  color: var(--cyan);
  padding-left: 8px;
}

.page-faq .faq-index-num {
  font-family: var(--font-num);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--grid-line);
  flex: none;
}

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

.page-faq .faq-rail-card {
  margin-top: 22px;
  padding: 16px 18px;
  border: 1px solid var(--grid-line);
  border-left: 2px solid var(--coral);
  background: linear-gradient(160deg, rgba(255, 107, 74, 0.1), transparent 78%);
}

.page-faq .faq-rail-kicker {
  margin: 0 0 6px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--coral);
}

.page-faq .faq-rail-text {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--aqua-gray);
}

.page-faq .link-inline {
  display: inline-block;
  font-size: 14px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan);
}

.page-faq .link-inline:hover,
.page-faq .link-inline:focus-visible {
  color: var(--white);
  border-bottom-color: var(--white);
}

/* ---------- 分组 ---------- */
.page-faq .faq-main {
  min-width: 0;
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(34px, 6vw, 68px);
  padding-top: clamp(28px, 5vw, 52px);
  border-top: 1px solid var(--grid-line);
}

.page-faq .faq-group-head {
  display: grid;
  gap: 12px;
  margin-bottom: 18px;
}

.page-faq .faq-group-num {
  font-family: var(--font-num);
  font-size: 42px;
  font-weight: 700;
  line-height: 0.9;
  letter-spacing: 0.02em;
  color: var(--cyan);
}

.page-faq .faq-group-head h2 {
  margin: 0 0 8px;
  font-size: clamp(22px, 3.6vw, 32px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  color: var(--mist);
}

.page-faq .faq-group-head p {
  margin: 0;
  max-width: 620px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--aqua-gray);
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-item {
  border-top: 1px solid var(--grid-line);
}

.page-faq .faq-item:last-of-type {
  border-bottom: 1px solid var(--grid-line);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 0;
  font-size: clamp(15px, 2.3vw, 17px);
  font-weight: 600;
  line-height: 1.55;
  color: var(--mist);
  cursor: pointer;
  list-style: none;
  transition: color var(--dur) var(--ease);
}

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

.page-faq .faq-item summary::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-num);
  font-size: 22px;
  line-height: 1;
  color: var(--cyan);
}

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

.page-faq .faq-item summary:hover,
.page-faq .faq-item[open] summary {
  color: var(--cyan);
}

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-faq .faq-answer {
  margin: 0 0 18px 2px;
  padding: 2px 0 2px 16px;
  border-left: 2px solid var(--cyan);
}

.page-faq .faq-answer p {
  margin: 0;
  max-width: 720px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--aqua-gray);
}

/* ---------- 核验流程 ---------- */
.page-faq .faq-verify-layout {
  display: grid;
  gap: 24px;
}

.page-faq .faq-verify-copy {
  min-width: 0;
}

.page-faq .faq-steps {
  display: grid;
  gap: 16px;
  margin: 20px 0 4px;
  padding: 18px 0 0;
  border-top: 1px dashed var(--grid-line);
}

.page-faq .faq-step {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
}

.page-faq .faq-step-num {
  font-family: var(--font-num);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--lemon);
}

.page-faq .faq-step h3 {
  margin: 0 0 4px;
  font-size: 15px;
  font-weight: 700;
  color: var(--mist);
}

.page-faq .faq-step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--aqua-gray);
}

.page-faq .faq-verify-media {
  margin: 0;
  border: 1px solid var(--grid-line);
  background: linear-gradient(160deg, var(--teal), var(--abyss) 76%);
}

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

/* ---------- 联系客服 ---------- */
.page-faq .faq-contact-list {
  display: grid;
  gap: 1px;
  margin: 22px 0 0;
  padding: 0;
  background: var(--grid-line);
  border: 1px solid var(--grid-line);
}

.page-faq .faq-contact-item {
  padding: 16px 18px;
  background: var(--teal);
}

.page-faq .faq-contact-item dt {
  margin: 0 0 6px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-faq .faq-contact-item dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--mist);
  overflow-wrap: anywhere;
}

.page-faq .faq-contact-phone {
  font-family: var(--font-num);
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--lemon);
}

.page-faq .faq-support-note {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--aqua-gray);
}

.page-faq .faq-support-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-top: 18px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-ticker {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-faq .faq-ticker li {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .page-faq .faq-contact-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-group-head {
    grid-template-columns: 76px minmax(0, 1fr);
    align-items: start;
    gap: 18px;
  }

  .page-faq .faq-group-num {
    font-size: 52px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
  }

  .page-faq .faq-hero-media {
    margin-top: 6px;
  }

  .page-faq .faq-verify-layout {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    align-items: start;
    gap: 32px;
  }

  .page-faq .faq-verify-media {
    position: sticky;
    top: 96px;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-body {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 96px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .breadcrumb-link,
  .page-faq .faq-index a,
  .page-faq .faq-item summary {
    transition: none;
  }
}