.page-faq {
  --faq-panel-bg: linear-gradient(158deg, rgba(27, 22, 56, .96) 0%, rgba(11, 27, 43, .96) 100%);
  --faq-card-bg: linear-gradient(180deg, rgba(27, 22, 56, .58) 0%, rgba(11, 27, 43, .62) 100%);
  --faq-gap: clamp(16px, 2.4vw, 28px);

  background:
    radial-gradient(880px 420px at 86% -90px, rgba(79, 195, 247, .10), transparent 68%),
    radial-gradient(620px 360px at 4% 16%, rgba(198, 40, 40, .10), transparent 70%),
    var(--night);
  color: var(--snow);
  overflow-x: hidden;
}

.page-faq .breadcrumb {
  padding-block: clamp(16px, 2.6vw, 24px) 0;
}

.page-faq a:focus-visible,
.page-faq summary:focus-visible,
.page-faq button:focus-visible {
  outline: 2px solid var(--ice);
  outline-offset: 2px;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  padding-block: clamp(20px, 3.4vw, 36px) clamp(30px, 5vw, 54px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  align-items: start;
}

.page-faq .faq-hero-copy .tag {
  display: inline-block;
}

.page-faq h1 {
  margin: 14px 0 0;
  font-size: clamp(28px, 5.4vw, 50px);
  line-height: 1.1;
  letter-spacing: -.02em;
  font-weight: 800;
}

.page-faq .faq-lede {
  margin: 16px 0 0;
  max-width: 46ch;
  color: var(--muted);
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.75;
}

.page-faq .faq-hero-panel {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line-strong);
  box-shadow: 8px 8px 0 rgba(7, 11, 18, .8);
}

.page-faq .faq-panel-cell {
  background: var(--faq-panel-bg);
  padding: clamp(14px, 2vw, 20px);
  min-width: 0;
}

.page-faq .faq-cell-label {
  margin: 0;
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--muted);
}

.page-faq .faq-cell-value {
  margin: 8px 0 0;
  font-size: clamp(23px, 3.6vw, 33px);
  font-weight: 700;
  line-height: 1;
  color: var(--gold);
}

.page-faq .faq-cell-note {
  margin: 8px 0 0;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--silver);
}

/* ---------- 主体两栏 ---------- */

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 44px);
  padding-block: clamp(30px, 5vw, 56px) clamp(46px, 7vw, 86px);
}

.page-faq .faq-index-title {
  margin: 0 0 12px;
  font-size: 11.5px;
  letter-spacing: .2em;
  color: var(--gold);
}

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

.page-faq .faq-index-list li {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-index-list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 11px 6px 11px 10px;
  border-left: 2px solid transparent;
  color: var(--muted);
  font-size: 14.5px;
  text-decoration: none;
  transition: color var(--speed) var(--ease), border-color var(--speed) var(--ease), background-color var(--speed) var(--ease);
}

.page-faq .faq-index-list a .data-num {
  font-size: 12px;
  color: var(--saffron);
  letter-spacing: .06em;
}

.page-faq .faq-index-list a:hover {
  color: var(--snow);
  border-left-color: var(--gold);
  background: rgba(212, 160, 23, .08);
}

.page-faq .faq-index-cta {
  margin-top: 20px;
  padding: 16px;
  border: 1px solid var(--line-strong);
  background: var(--faq-panel-bg);
  box-shadow: 5px 5px 0 rgba(7, 11, 18, .76);
}

.page-faq .faq-index-cta p {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--silver);
}

.page-faq .faq-index-cta .btn {
  display: block;
  width: 100%;
  text-align: center;
}

/* ---------- 章节 ---------- */

.page-faq .faq-section {
  scroll-margin-top: 96px;
}

.page-faq .faq-section + .faq-section {
  margin-top: clamp(34px, 5vw, 58px);
  padding-top: clamp(24px, 3.6vw, 38px);
  border-top: 1px solid var(--line);
}

.page-faq .faq-section-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(12px, 2vw, 20px);
  align-items: start;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-gold);
  margin-bottom: 18px;
}

.page-faq .faq-section-num {
  font-family: var(--font-mono);
  font-size: clamp(28px, 4.4vw, 44px);
  line-height: .9;
  letter-spacing: -.04em;
  color: var(--gold);
}

.page-faq .faq-section-copy h2 {
  margin: 0;
  font-size: clamp(19px, 2.6vw, 25px);
  line-height: 1.25;
  letter-spacing: -.01em;
}

.page-faq .faq-section-copy p {
  margin: 8px 0 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 手风琴 ---------- */

.page-faq .qa {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--faq-card-bg);
  transition: border-color var(--speed) var(--ease), box-shadow var(--speed) var(--ease);
}

.page-faq .qa + .qa {
  margin-top: 10px;
}

.page-faq .qa:hover {
  border-color: var(--line-strong);
}

.page-faq .qa[open] {
  border-color: var(--line-gold);
  box-shadow: 6px 6px 0 rgba(7, 11, 18, .78);
}

.page-faq .qa-q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: baseline;
  padding: 15px clamp(14px, 2vw, 20px);
  list-style: none;
  cursor: pointer;
  font-size: clamp(15px, 1.5vw, 16.5px);
  font-weight: 600;
  color: var(--snow);
  transition: color var(--speed) var(--ease);
}

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

.page-faq .qa-q:hover {
  color: var(--gold);
}

.page-faq .qa-num {
  font-size: 12.5px;
  color: var(--saffron);
  letter-spacing: .04em;
}

.page-faq .qa-mark {
  position: relative;
  align-self: center;
  width: 14px;
  height: 14px;
  border: 1px solid var(--line-strong);
  transition: border-color var(--speed) var(--ease), background-color var(--speed) var(--ease);
}

.page-faq .qa-mark::before,
.page-faq .qa-mark::after {
  content: "";
  position: absolute;
  left: 2px;
  right: 2px;
  top: 50%;
  height: 1px;
  background: var(--gold);
  transform: translateY(-50%);
  transition: transform var(--speed) var(--ease), opacity var(--speed) var(--ease);
}

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

.page-faq .qa[open] .qa-mark {
  border-color: var(--line-gold);
  background: rgba(212, 160, 23, .14);
}

.page-faq .qa[open] .qa-mark::after {
  transform: translateY(-50%) rotate(0deg);
  opacity: 0;
}

.page-faq .qa-a {
  padding: 14px clamp(14px, 2vw, 20px) clamp(16px, 2.4vw, 22px);
  border-top: 1px dashed rgba(185, 196, 208, .22);
}

.page-faq .qa-a p {
  margin: 0;
  max-width: 68ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .qa-a p + p,
.page-faq .qa-a .qa-steps + p {
  margin-top: 10px;
}

.page-faq .qa-a a {
  color: var(--ice);
  text-decoration: none;
  border-bottom: 1px solid rgba(79, 195, 247, .45);
  transition: color var(--speed) var(--ease), border-color var(--speed) var(--ease);
}

.page-faq .qa-a a:hover {
  color: var(--snow);
  border-bottom-color: var(--gold);
}

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

.page-faq .qa-steps li {
  counter-increment: faq-step;
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .qa-steps li::before {
  content: counter(faq-step, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.6;
  text-align: center;
  color: var(--saffron);
  border: 1px solid rgba(198, 40, 40, .45);
  border-radius: var(--radius);
  padding: 1px 0;
}

.page-faq .faq-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

/* ---------- 图片 ---------- */

.page-faq .faq-figure {
  margin: 16px 0 0;
}

.page-faq .faq-figure--phone {
  max-width: 342px;
}

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

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  padding-left: 10px;
  border-left: 2px solid var(--line-gold);
  font-size: 13px;
  line-height: 1.6;
  color: var(--silver);
}

/* ---------- 联系方式 ---------- */

.page-faq .faq-contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin-top: 16px;
  background: var(--line);
  border: 1px solid var(--line-strong);
}

.page-faq .faq-contact-item {
  background: var(--faq-panel-bg);
  padding: clamp(14px, 2vw, 18px);
  min-width: 0;
}

.page-faq .faq-contact-label {
  margin: 0 0 8px;
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--gold);
}

.page-faq .faq-contact-item a,
.page-faq .faq-contact-item .meta-copy {
  display: inline-block;
  padding: 0;
  border: 0;
  background: none;
  font-family: var(--font-mono);
  font-size: 14.5px;
  line-height: 1.5;
  color: var(--snow);
  text-decoration: none;
  word-break: break-all;
  cursor: pointer;
  transition: color var(--speed) var(--ease);
}

.page-faq .faq-contact-item a {
  border-bottom: 1px solid rgba(79, 195, 247, .45);
}

.page-faq .faq-contact-item a:hover,
.page-faq .faq-contact-item .meta-copy:hover {
  color: var(--gold);
}

.page-faq .faq-contact-text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--snow);
}

.page-faq .faq-contact-note {
  margin: 8px 0 0;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--silver);
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-faq .faq-contact {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-inner {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
    gap: clamp(28px, 4vw, 56px);
  }
}

@media (min-width: 980px) {
  .page-faq .faq-layout {
    grid-template-columns: 244px minmax(0, 1fr);
    gap: clamp(30px, 4vw, 56px);
  }

  .page-faq .faq-index {
    position: sticky;
    top: 22px;
    align-self: start;
  }
}

@media (max-width: 480px) {
  .page-faq .faq-hero-panel {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-faq .qa-q {
    grid-template-columns: auto minmax(0, 1fr);
    row-gap: 8px;
  }

  .page-faq .qa-mark {
    grid-column: 2;
    align-self: end;
    justify-self: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq * {
    transition: none !important;
  }
}