.page-faq {
  --faq-sticky: clamp(16px, 3vw, 32px);
  position: relative;
  display: block;
  color: var(--c-mist);
  background: var(--c-night);
  padding-bottom: clamp(48px, 8vw, 96px);
  font-family: var(--font-body);
}

.page-faq *,
.page-faq *::before,
.page-faq *::after {
  box-sizing: border-box;
}

.page-faq .faq-mono {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

.page-faq .breadcrumbs {
  padding-top: clamp(14px, 2.5vw, 26px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  margin-top: clamp(14px, 2.5vw, 26px);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  background:
    linear-gradient(160deg, var(--c-ice) 0%, var(--c-ice) 52%, var(--c-night) 100%);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(var(--line-soft) 1px, transparent 1px);
  background-size: 100% 44px;
  opacity: 0.55;
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: 0;
  right: -8%;
  width: 48%;
  height: 100%;
  background: linear-gradient(200deg, rgba(46, 242, 208, 0.16), rgba(255, 106, 61, 0.12) 58%, transparent 88%);
  transform: skewX(-8deg);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 2;
  padding-block: clamp(30px, 6vw, 72px) clamp(28px, 5vw, 56px);
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: clamp(32px, 6.4vw, 70px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  font-weight: 700;
  color: var(--c-mist);
  text-wrap: balance;
}

.page-faq .faq-hero__title em {
  font-style: normal;
  color: var(--c-cyan);
  border-bottom: 3px solid var(--c-orange);
  padding-bottom: 2px;
}

.page-faq .faq-hero__lead {
  margin: clamp(16px, 2.4vw, 26px) 0 0;
  max-width: 58ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--c-mist);
  opacity: 0.86;
}

.page-faq .faq-hero__strip {
  list-style: none;
  margin: clamp(22px, 4vw, 38px) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .faq-hero__strip li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: var(--glass);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--c-slate);
}

.page-faq .faq-hero__strip .faq-mono {
  font-size: 17px;
  color: var(--c-yellow);
}

/* ---------- 双层信息条 ---------- */
.page-faq .faq-double {
  background: var(--c-night);
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-double__inner {
  padding-block: clamp(18px, 3vw, 28px);
  display: grid;
  gap: 14px;
}

.page-faq .faq-double__note {
  margin: 0;
  padding-left: 12px;
  border-left: 2px solid var(--c-orange);
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-slate);
}

.page-faq .faq-double__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-double__chips a {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.04em;
  text-decoration: none;
  color: var(--c-mist);
  padding: 7px 12px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

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

@media (min-width: 900px) {
  .page-faq .faq-double__inner {
    grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
    align-items: center;
    gap: 28px;
  }
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: clamp(22px, 4vw, 40px);
  padding-block: clamp(30px, 5vw, 56px);
}

@media (min-width: 980px) {
  .page-faq .faq-layout {
    grid-template-columns: 226px minmax(0, 1fr);
    align-items: start;
    gap: clamp(28px, 4vw, 56px);
  }
}

/* ---------- 左侧索引 ---------- */
.page-faq .faq-index {
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  padding: 16px;
  background: linear-gradient(180deg, rgba(18, 74, 106, 0.55), rgba(6, 24, 38, 0.25));
}

@media (min-width: 980px) {
  .page-faq .faq-index {
    position: sticky;
    top: var(--faq-sticky);
  }
}

.page-faq .faq-index__title {
  margin: 0 0 14px;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-cyan);
}

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

.page-faq .faq-index__link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 8px;
  text-decoration: none;
  color: var(--c-mist);
  font-size: 14px;
  line-height: 1.4;
  border-left: 2px solid transparent;
  transition: background-color 0.18s var(--ease), border-color 0.18s var(--ease), color 0.18s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--c-cyan);
  background: rgba(46, 242, 208, 0.08);
  border-left-color: var(--c-cyan);
}

.page-faq .faq-index__no {
  font-family: var(--font-data);
  font-size: 11px;
  color: var(--c-slate);
}

.page-faq .faq-index__box {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-index__box-title {
  margin: 0 0 6px;
  font-size: 13px;
  font-weight: 700;
  color: var(--c-mist);
}

.page-faq .faq-index__box-text {
  margin: 0 0 12px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--c-slate);
}

@media (max-width: 979px) {
  .page-faq .faq-index__list {
    display: flex;
    gap: 6px;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .page-faq .faq-index__link {
    flex: 0 0 auto;
    white-space: nowrap;
    border: 1px solid var(--line-soft);
    border-bottom-width: 2px;
    border-radius: var(--r-sm);
    padding: 8px 12px;
    font-size: 13px;
  }

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

/* ---------- 正文区块 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: clamp(36px, 6vw, 64px);
  min-width: 0;
}

.page-faq .faq-sec {
  min-width: 0;
  scroll-margin-top: 96px;
}

.page-faq .faq-sec__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 12px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-sec__no {
  margin: 0;
  flex: 0 0 auto;
  font-family: var(--font-data);
  font-size: 13px;
  color: var(--c-orange);
}

.page-faq .faq-sec h2 {
  flex: 1 1 auto;
  min-width: 0;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(23px, 3.6vw, 36px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--c-mist);
}

.page-faq .faq-sec__lead {
  margin: 0 0 clamp(16px, 3vw, 24px);
  max-width: 64ch;
  font-size: clamp(14.5px, 1.6vw, 15.5px);
  line-height: 1.85;
  color: var(--c-mist);
  opacity: 0.82;
}

.page-faq .faq-sec__lead a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-cyan);
}

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

/* 步骤 */
.page-faq .faq-steps {
  list-style: none;
  margin: 0 0 clamp(20px, 3vw, 28px);
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-steps li {
  padding: 16px;
  border: 1px solid var(--line-soft);
  border-top: 2px solid var(--c-cyan);
  border-radius: var(--r-sm);
  background: var(--c-tactic);
}

.page-faq .faq-steps .faq-mono {
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--c-yellow);
}

.page-faq .faq-steps h3 {
  margin: 8px 0 6px;
  font-size: 15.5px;
  font-weight: 700;
  color: var(--c-mist);
}

.page-faq .faq-steps p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--c-mist);
  opacity: 0.76;
}

@media (min-width: 760px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* 版本对照 */
.page-faq .faq-vtable {
  margin: clamp(18px, 3vw, 26px) 0 0;
  display: grid;
  gap: 1px;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-sm);
  background: var(--line-soft);
  overflow: hidden;
}

.page-faq .faq-vtable > div {
  display: grid;
  gap: 4px;
  padding: 13px 16px;
  background: rgba(11, 42, 66, 0.94);
}

.page-faq .faq-vtable dt {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--c-slate);
}

.page-faq .faq-vtable dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--c-mist);
}

.page-faq .faq-vtable dd .faq-mono {
  font-size: 17px;
  color: var(--c-yellow);
}

@media (min-width: 640px) {
  .page-faq .faq-vtable {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* 媒体框 */
.page-faq .media-frame {
  position: relative;
  margin: clamp(18px, 3vw, 28px) 0 0;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-sm);
  overflow: hidden;
  background: var(--c-ice);
}

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

.page-faq .media-caption {
  padding: 10px 14px;
  border-top: 1px solid var(--line-soft);
  background: rgba(6, 24, 38, 0.65);
  font-size: 12px;
  line-height: 1.6;
  color: var(--c-slate);
}

.page-faq .media-caption::before {
  content: "▍";
  color: var(--c-cyan);
  margin-right: 6px;
}

/* 折叠问答 */
.page-faq .faq-qa {
  display: grid;
  gap: 10px;
}

.page-faq .faq-qa__item {
  border: 1px solid var(--line-soft);
  border-radius: var(--r-sm);
  background: rgba(18, 74, 106, 0.34);
  transition: border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-faq .faq-qa__item:hover {
  border-color: rgba(46, 242, 208, 0.4);
}

.page-faq .faq-qa__item[open] {
  background: rgba(18, 74, 106, 0.62);
  border-color: rgba(46, 242, 208, 0.45);
}

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

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

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

.page-faq .faq-qa__mark {
  position: relative;
  margin-left: auto;
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  transform: translateY(3px);
  border: 1px solid var(--line);
  border-radius: 50%;
  transition: border-color 0.2s var(--ease);
}

.page-faq .faq-qa__item[open] .faq-qa__mark {
  border-color: var(--c-cyan);
}

.page-faq .faq-qa__mark::before,
.page-faq .faq-qa__mark::after {
  content: "";
  position: absolute;
  top: calc(50% - 1px);
  left: 4px;
  right: 4px;
  height: 2px;
  border-radius: 1px;
  background: var(--c-cyan);
}

.page-faq .faq-qa__mark::after {
  transform: rotate(90deg);
  transition: transform 0.22s var(--ease);
}

.page-faq .faq-qa__item[open] .faq-qa__mark::after {
  transform: rotate(0deg);
}

.page-faq .faq-qa__body {
  padding: 0 16px 18px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-mist);
  opacity: 0.82;
}

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

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

.page-faq .faq-qa__body a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-cyan);
}

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

/* 回访评测带 */
.page-faq .faq-sec--band {
  padding: clamp(20px, 3.4vw, 34px) clamp(16px, 3vw, 30px);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background:
    linear-gradient(135deg, rgba(15, 92, 90, 0.5), rgba(11, 42, 66, 0.9) 62%);
}

.page-faq .faq-tags {
  list-style: none;
  margin: 0 0 clamp(18px, 3vw, 26px);
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-tags li {
  padding: 6px 12px;
  border: 1px solid var(--line-cyan);
  border-radius: 999px;
  background: rgba(46, 242, 208, 0.07);
  font-size: 12.5px;
  color: var(--c-cyan);
}

.page-faq .faq-samples {
  display: grid;
  gap: 16px;
}

.page-faq .faq-samples > div {
  padding: 4px 0 4px 14px;
  border-left: 2px solid var(--c-orange);
}

.page-faq .faq-samples span {
  display: block;
  font-family: var(--font-data);
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.1;
  color: var(--c-yellow);
}

.page-faq .faq-samples small {
  display: block;
  margin-top: 6px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--c-slate);
}

@media (min-width: 720px) {
  .page-faq .faq-samples {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }
}

/* 响应通道 */
.page-faq .faq-resp {
  display: grid;
  gap: 12px;
}

.page-faq .faq-resp article {
  padding: 18px 18px 20px;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-sm);
  background: var(--glass);
}

.page-faq .faq-resp article:nth-child(2) {
  background: var(--c-teal);
  border-color: rgba(46, 242, 208, 0.3);
}

.page-faq .faq-resp h3 {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  color: var(--c-mist);
}

.page-faq .faq-resp p {
  margin: 0 0 10px;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--c-mist);
  opacity: 0.82;
}

.page-faq .faq-resp ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 6px;
  font-size: 13px;
  color: var(--c-mist);
  opacity: 0.78;
}

.page-faq .faq-resp li::before {
  content: "›";
  margin-right: 8px;
  font-family: var(--font-data);
  color: var(--c-cyan);
}

@media (min-width: 720px) {
  .page-faq .faq-resp {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* 联系支持 */
.page-faq .faq-contact {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  padding-top: clamp(18px, 3vw, 28px);
  border-top: 2px solid var(--c-orange);
}

.page-faq .faq-mail {
  display: inline-block;
  margin-top: 12px;
  padding-bottom: 3px;
  font-family: var(--font-data);
  font-size: clamp(14px, 2vw, 18px);
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-cyan);
  word-break: break-all;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-mail:hover,
.page-faq .faq-mail:focus-visible {
  color: var(--c-yellow);
  border-bottom-color: var(--c-yellow);
}

.page-faq .faq-contact__cta {
  margin: 20px 0 0;
}

.page-faq .faq-legal {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  margin: clamp(24px, 4vw, 38px) 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--c-slate);
}

.page-faq .faq-legal a {
  color: var(--c-slate);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

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

@media (min-width: 860px) {
  .page-faq .faq-contact {
    grid-template-columns: minmax(0, 1fr) minmax(0, 360px);
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: 0.001ms !important;
  }
}
<<<END>>>