.page-faq {
  --faq-a: #16324A;
  --faq-b: #0B1B2B;
  --faq-glow: rgba(66, 245, 212, 0.13);
  --faq-cell: 72px;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 84% 12%, var(--faq-glow), transparent 46%),
    linear-gradient(158deg, var(--faq-a), var(--faq-b) 64%);
  border-bottom: 1px solid var(--line);
  padding: clamp(18px, 3vw, 28px) 0 clamp(28px, 5vw, 56px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(159, 179, 200, 0.07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(159, 179, 200, 0.07) 1px, transparent 1px);
  background-size: var(--faq-cell) var(--faq-cell);
  pointer-events: none;
}

.page-faq .faq-hero > .shell {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero .breadcrumbs {
  margin-bottom: clamp(18px, 3vw, 32px);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.page-faq .faq-hero__lead .eyebrow {
  margin: 0 0 14px;
  color: var(--c-cyan);
}

.page-faq .faq-hero h1 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 6vw, 58px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--c-fog);
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 58ch;
  font-size: clamp(14px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--c-steel);
}

.page-faq .faq-hero__card {
  border: 1px solid var(--line-strong);
  background: rgba(20, 24, 29, 0.72);
  padding: clamp(16px, 2.4vw, 24px);
}

.page-faq .faq-hero__card-title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--c-cyan);
}

.page-faq .faq-hero__facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-hero__facts li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero__facts li:last-child {
  border-bottom: 0;
}

.page-faq .faq-hero__num {
  flex: 0 0 auto;
  min-width: 74px;
  font-family: var(--font-mono);
  font-size: clamp(20px, 3vw, 26px);
  font-weight: 700;
  line-height: 1;
  color: var(--c-gold);
}

.page-faq .faq-hero__cap {
  font-size: 13px;
  line-height: 1.5;
  color: var(--c-steel);
}

/* ---------- 热门问题 ---------- */

.page-faq .faq-hot {
  background: var(--c-char);
  border-bottom: 1px solid var(--line);
  padding: 14px 0;
}

.page-faq .faq-hot__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
}

.page-faq .faq-hot__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.16em;
  color: var(--c-steel);
  white-space: nowrap;
}

.page-faq .faq-hot__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-hot__list a {
  display: inline-block;
  padding: 5px 12px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  font-size: 13px;
  color: var(--c-fog);
  text-decoration: none;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .faq-hot__list a:hover,
.page-faq .faq-hot__list a:focus-visible {
  border-color: var(--c-cyan);
  background: var(--wash-cyan);
  color: var(--c-cyan);
  outline: none;
}

/* ---------- 主体两栏 ---------- */

.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 4vw, 48px);
  padding-block: clamp(28px, 5vw, 64px);
  align-items: start;
}

.page-faq .faq-index {
  border: 1px solid var(--line);
  background: rgba(36, 56, 77, 0.22);
  padding: 18px;
}

.page-faq .faq-index__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-cyan);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: idx;
  display: grid;
  gap: 2px;
}

.page-faq .faq-index__list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 8px 9px 10px;
  border-left: 2px solid transparent;
  font-size: 14px;
  color: var(--c-fog);
  text-decoration: none;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease), color 0.2s var(--ease);
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  border-left-color: var(--c-cyan);
  background: var(--wash-cyan);
  color: var(--c-cyan);
  outline: none;
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-steel);
}

.page-faq .faq-index__note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-steel);
}

.page-faq .faq-index__note a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(66, 245, 212, 0.4);
}

/* ---------- 章节 ---------- */

.page-faq .faq-main {
  display: grid;
  gap: clamp(30px, 4vw, 52px);
  min-width: 0;
}

.page-faq .faq-block {
  scroll-margin-top: 96px;
  border-top: 1px solid var(--line-strong);
  padding-top: clamp(18px, 2.6vw, 26px);
  min-width: 0;
}

.page-faq .faq-block__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 6px 14px;
  margin-bottom: clamp(16px, 2.4vw, 24px);
}

.page-faq .faq-block__num {
  grid-row: span 2;
  font-family: var(--font-mono);
  font-size: clamp(28px, 5vw, 44px);
  font-weight: 700;
  line-height: 0.9;
  color: var(--c-red);
}

.page-faq .faq-block__head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(22px, 3.2vw, 32px);
  font-weight: 700;
  line-height: 1.2;
  color: var(--c-fog);
}

.page-faq .faq-block__sub {
  margin: 0;
  font-size: 13px;
  color: var(--c-steel);
}

/* ---------- 问答条目 ---------- */

.page-faq .qa-list {
  display: grid;
  gap: 12px;
}

.page-faq .qa {
  scroll-margin-top: 96px;
  border: 1px solid var(--line);
  background: rgba(36, 56, 77, 0.16);
  padding: clamp(14px, 2.2vw, 20px);
  transition: border-color 0.2s var(--ease);
}

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

.page-faq .qa__q {
  margin: 0;
  font-family: var(--font-body);
  font-size: clamp(16px, 2vw, 18px);
  font-weight: 700;
  line-height: 1.5;
  color: var(--c-fog);
}

.page-faq .qa__conclusion {
  margin: 10px 0 0;
  padding: 10px 14px;
  border-left: 2px solid var(--c-cyan);
  background: var(--wash-cyan);
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--c-fog);
}

.page-faq .qa__detail {
  margin-top: 12px;
}

.page-faq .qa__detail > summary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  cursor: pointer;
  padding: 6px 0;
  font-size: 13px;
  color: var(--c-steel);
  border-bottom: 1px dashed var(--line-strong);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

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

.page-faq .qa__detail > summary::after {
  content: "＋";
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--c-cyan);
  line-height: 1;
}

.page-faq .qa__detail[open] > summary::after {
  content: "－";
}

.page-faq .qa__detail > summary:hover,
.page-faq .qa__detail > summary:focus-visible {
  color: var(--c-cyan);
  border-bottom-color: var(--c-cyan);
  outline: none;
}

.page-faq .qa__body {
  padding-top: 12px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--c-steel);
}

.page-faq .qa__body p {
  margin: 0 0 10px;
}

.page-faq .qa__body p:last-child {
  margin-bottom: 0;
}

.page-faq .qa__body a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(66, 245, 212, 0.38);
}

.page-faq .qa__body a:hover,
.page-faq .qa__body a:focus-visible {
  border-bottom-color: var(--c-cyan);
}

.page-faq .qa__list {
  margin: 0 0 10px;
  padding-left: 18px;
  display: grid;
  gap: 6px;
}

.page-faq .qa__list li::marker {
  color: var(--c-cyan);
}

/* ---------- 数据表 ---------- */

.page-faq .qa__tablewrap {
  overflow-x: auto;
  margin: 4px 0 12px;
  border: 1px solid var(--line);
}

.page-faq .price-table {
  width: 100%;
  min-width: 400px;
  border-collapse: collapse;
  font-size: 13.5px;
}

.page-faq .price-table th,
.page-faq .price-table td {
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
  line-height: 1.6;
}

.page-faq .price-table thead th {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--c-steel);
  background: rgba(11, 27, 43, 0.6);
  border-bottom-color: var(--line-strong);
}

.page-faq .price-table tbody th {
  font-weight: 700;
  color: var(--c-fog);
  white-space: nowrap;
}

.page-faq .price-table tbody td {
  color: var(--c-steel);
}

.page-faq .price-table tbody tr:last-child th,
.page-faq .price-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-faq .price-table .num {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--c-gold);
  white-space: nowrap;
}

/* ---------- 图片 ---------- */

.page-faq .faq-figure {
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  border: 1px solid var(--line);
  background: linear-gradient(150deg, var(--faq-a), var(--faq-b));
  overflow: hidden;
}

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

.page-faq .faq-figure figcaption {
  padding: 10px 14px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--c-steel);
  border-top: 1px solid var(--line);
}

/* ---------- 联系方式与结尾 ---------- */

.page-faq .faq-contact {
  margin: 0 0 12px;
  display: grid;
  gap: 0;
}

.page-faq .faq-contact > div {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 12px;
  padding: 9px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-contact > div:last-child {
  border-bottom: 0;
}

.page-faq .faq-contact dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--c-steel);
  padding-top: 2px;
}

.page-faq .faq-contact dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.6;
  color: var(--c-fog);
  word-break: break-word;
}

.page-faq .faq-cta {
  margin-top: clamp(18px, 2.6vw, 26px);
  border: 1px solid var(--line-strong);
  border-left: 3px solid var(--c-gold);
  background: var(--wash-gold);
  padding: clamp(16px, 2.4vw, 24px);
  display: grid;
  gap: 14px;
}

.page-faq .faq-cta__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-fog);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
  }

  .page-faq .faq-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-body {
    grid-template-columns: 232px minmax(0, 1fr);
  }

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

  .page-faq .faq-hero__card {
    margin-top: 8px;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-body {
    grid-template-columns: 260px minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .faq-hot__list a,
  .page-faq .faq-index__list a,
  .page-faq .qa__detail > summary {
    transition: none;
  }
}