.page-faq {
  --faq-num: var(--signal);
  --faq-frame: rgba(157, 185, 173, 0.16);
  background: var(--ink);
  color: var(--text);
  font-family: var(--font-body);
  padding-bottom: var(--sp-7);
}

.page-faq .ak-breadcrumb {
  padding: var(--sp-3) 0 var(--sp-1);
}

.page-faq .ak-breadcrumb__list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-mute);
}

.page-faq .ak-breadcrumb__list a {
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.18s ease;
}

.page-faq .ak-breadcrumb__list a:hover,
.page-faq .ak-breadcrumb__list a:focus-visible {
  color: var(--signal);
}

.page-faq .ak-breadcrumb__list li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--line);
}

.page-faq .ak-breadcrumb__list [aria-current="page"] {
  color: var(--text);
}

/* ---------- 首屏窄框景 ---------- */
.page-faq .faq-hero {
  padding: var(--sp-3) 0 var(--sp-4);
}

.page-faq .faq-hero__frame {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-3);
  padding: var(--sp-3);
  border: 1px solid var(--hair);
  border-radius: 2px;
  background:
    radial-gradient(120% 90% at 88% -10%, rgba(255, 107, 26, 0.14), transparent 58%),
    linear-gradient(165deg, var(--ink-2) 0%, var(--ink) 70%);
  overflow: hidden;
}

.page-faq .faq-hero__frame::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: linear-gradient(180deg, var(--signal), transparent 70%);
  pointer-events: none;
}

.page-faq .faq-hero__copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.page-faq .faq-hero__copy h1 {
  font-family: var(--font-display);
  font-size: clamp(32px, 7vw, 56px);
  font-weight: 800;
  line-height: 1.04;
  letter-spacing: -0.02em;
  margin: var(--sp-1) 0 var(--sp-2);
  color: var(--paper-w);
}

.page-faq .faq-hero__copy p {
  margin: 0 0 var(--sp-3);
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-dim);
}

.page-faq .faq-hero__quick {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
}

.page-faq .faq-hero__visual {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-faq .faq-hero__visual img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--hair);
  border-radius: 2px;
  object-fit: cover;
  filter: saturate(0.94) contrast(1.03);
}

.page-faq .faq-hero__visual figcaption {
  color: var(--text-mute);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-4);
  align-items: start;
}

.page-faq .faq-rail__inner {
  padding: var(--sp-3);
  border: 1px solid var(--hair-soft);
  border-left: 2px solid var(--line);
  border-radius: 2px;
  background: var(--ink-2);
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: var(--sp-2) 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-rail__list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 8px;
  color: var(--text-dim);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.5;
  border-left: 2px solid transparent;
  transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.page-faq .faq-rail__list a:hover {
  background: var(--signal-soft);
  border-left-color: var(--signal);
  color: var(--paper-w);
}

.page-faq .faq-rail__list a:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
  background: var(--signal-soft);
  color: var(--paper-w);
}

.page-faq .faq-rail__num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  color: var(--faq-num);
  letter-spacing: 0.06em;
  min-width: 2.4ch;
}

.page-faq .faq-rail__help {
  margin-top: var(--sp-3);
  padding-top: var(--sp-3);
  border-top: 1px dashed var(--hair);
}

.page-faq .faq-rail__mail,
.page-faq .faq-rail__phone,
.page-faq .faq-rail__note {
  display: block;
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  word-break: break-all;
}

.page-faq .faq-rail__mail {
  color: var(--signal);
  text-decoration: none;
}

.page-faq .faq-rail__mail:hover { text-decoration: underline; }

.page-faq .faq-rail__phone { color: var(--text); }

.page-faq .faq-rail__note { color: var(--text-mute); }

/* ---------- 搜索与题图 ---------- */
.page-faq .faq-search {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: var(--sp-3);
}

.page-faq .faq-search input {
  width: 100%;
  padding: 12px 14px;
  background: rgba(157, 185, 173, 0.07);
  border: 1px solid var(--hair);
  border-radius: 2px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.4;
  appearance: none;
  -webkit-appearance: none;
}

.page-faq .faq-search input::placeholder { color: var(--text-mute); }

.page-faq .faq-search input:focus {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
  border-color: var(--signal);
}

.page-faq .faq-banner {
  margin: 0 0 var(--sp-4);
  border: 1px solid var(--hair-soft);
  border-radius: 2px;
  overflow: hidden;
}

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

/* ---------- 问答条目 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: var(--sp-2);
}

.page-faq .faq-item {
  border: 1px solid var(--hair-soft);
  border-left: 3px solid var(--line);
  border-radius: 2px;
  background: var(--ink-2);
  transition: border-left-color 0.18s ease, background 0.18s ease;
}

.page-faq .faq-item:hover { border-left-color: var(--signal); }

.page-faq .faq-item details { margin: 0; }

.page-faq .faq-item summary {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-3);
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.005em;
  color: var(--paper-w);
}

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

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

.page-faq .faq-item__num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--faq-num);
  min-width: 2.4ch;
}

.page-faq .faq-item__title { flex: 1 1 auto; }

.page-faq .faq-item__icon {
  position: relative;
  flex: 0 0 16px;
  width: 16px;
  height: 16px;
}

.page-faq .faq-item__icon::before,
.page-faq .faq-item__icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  width: 16px;
  height: 2px;
  background: var(--text);
  transform: translateY(-50%);
  transition: transform 0.2s ease, background 0.2s ease;
}

.page-faq .faq-item__icon::after {
  transform: translateY(-50%) rotate(90deg);
}

.page-faq .faq-item details[open] .faq-item__icon::before,
.page-faq .faq-item details[open] .faq-item__icon::after {
  background: var(--signal);
}

.page-faq .faq-item details[open] .faq-item__icon::after {
  transform: translateY(-50%) rotate(0deg);
}

.page-faq .faq-item__body {
  padding: 0 var(--sp-3) var(--sp-3);
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-faq .faq-item__body p { margin: 0 0 var(--sp-2); }

.page-faq .faq-item__body p:last-child { margin-bottom: var(--sp-2); }

.page-faq .faq-item__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  padding-top: var(--sp-2);
  border-top: 1px dashed var(--hair-soft);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.page-faq .faq-item__links a {
  color: var(--signal);
  text-decoration: none;
  transition: color 0.18s ease;
}

.page-faq .faq-item__links a:hover { text-decoration: underline; }

.page-faq .faq-item__links a:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}

/* ---------- 客服联络区 ---------- */
.page-faq .faq-contact {
  margin-top: var(--sp-4);
  padding: var(--sp-3);
  border: 1px solid var(--hair);
  border-radius: 2px;
  background: linear-gradient(150deg, var(--ink-2) 0%, var(--ink) 100%);
}

.page-faq .faq-contact__head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--sp-2);
  margin-bottom: var(--sp-2);
}

.page-faq .faq-contact__meta {
  margin: 0;
  display: grid;
  gap: var(--sp-2);
}

.page-faq .faq-contact__meta > div {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  gap: var(--sp-2);
  align-items: baseline;
  padding-bottom: var(--sp-2);
  border-bottom: 1px dashed var(--hair-soft);
}

.page-faq .faq-contact__meta > div:last-child {
  padding-bottom: 0;
  border-bottom: none;
}

.page-faq .faq-contact__meta dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-mute);
}

.page-faq .faq-contact__meta dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text);
  word-break: break-all;
}

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

.page-faq .faq-contact__note {
  margin: var(--sp-2) 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-mute);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-hero__frame {
    padding: var(--sp-4);
    gap: var(--sp-4);
  }

  .page-faq .faq-item summary { font-size: 19px; }
  .page-faq .faq-item__body { font-size: 15.5px; }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__frame {
    grid-template-columns: 1.15fr 1fr;
    gap: var(--sp-5);
    padding: var(--sp-4) var(--sp-4) var(--sp-4) var(--sp-5);
  }

  .page-faq .faq-layout {
    grid-template-columns: 264px minmax(0, 1fr);
    gap: var(--sp-5);
  }

  .page-faq .faq-rail__inner {
    position: sticky;
    top: 132px;
  }

  .page-faq .faq-banner {
    margin-bottom: var(--sp-5);
  }

  .page-faq .faq-item summary { padding: var(--sp-3) var(--sp-4); }
  .page-faq .faq-item__body { padding: 0 var(--sp-4) var(--sp-4); }
}

@media (min-width: 1200px) {
  .page-faq .faq-layout {
    grid-template-columns: 300px minmax(0, 1fr);
    gap: var(--sp-6);
  }

  .page-faq .faq-hero__copy p { font-size: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-rail__list a,
  .page-faq .faq-item,
  .page-faq .faq-item__icon::before,
  .page-faq .faq-item__icon::after,
  .page-faq .faq-item__links a {
    transition: none;
  }
}