.page-faq {
  --faq-nav-w: 264px;
  --faq-hair: rgba(4, 18, 31, 0.12);
  --faq-hair-dark: rgba(108, 246, 232, 0.18);
  --faq-cyan-wash: rgba(0, 229, 208, 0.09);
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: var(--paper);
  padding: clamp(18px, 3vw, 30px) 0 clamp(36px, 6vw, 72px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--faq-hair-dark) 1px, transparent 1px),
    linear-gradient(to bottom, var(--faq-hair-dark) 1px, transparent 1px);
  background-size: 88px 88px;
  opacity: 0.42;
  pointer-events: none;
}

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

.page-faq .faq-hero .breadcrumb,
.page-faq .faq-hero .breadcrumb a {
  color: var(--cyan-soft);
}

.page-faq .faq-hero .breadcrumb a {
  text-decoration: none;
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 44px);
  align-items: end;
  margin-top: clamp(20px, 3vw, 34px);
}

.page-faq .faq-hero h1 {
  margin: 14px 0 18px;
  font-size: clamp(30px, 5.4vw, 54px);
  line-height: 1.14;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-faq .faq-hero .eyebrow {
  color: var(--cyan);
}

.page-faq .faq-hero__intro {
  max-width: 34em;
  margin: 0 0 24px;
  font-size: clamp(16px, 1.5vw, 18px);
  line-height: 1.75;
  color: rgba(244, 247, 248, 0.82);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--cyan-soft);
}

.page-faq .faq-hero__meta li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.page-faq .faq-hero__meta li::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--cyan);
  transform: rotate(45deg);
}

.page-faq .faq-hero__media {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--faq-hair-dark);
  border-radius: var(--radius-l);
  background: var(--ink-2);
}

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

/* 问答主体 */
.page-faq .faq-body {
  background: var(--paper);
  color: var(--black);
  padding: clamp(34px, 5vw, 70px) 0 clamp(44px, 6vw, 88px);
}

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

/* 左侧主题索引 */
.page-faq .faq-nav {
  border-left: 2px solid var(--cyan);
  padding-left: 16px;
}

.page-faq .faq-nav .eyebrow {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--gray);
}

.page-faq .faq-nav__list {
  display: grid;
  gap: 4px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-nav__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border-radius: var(--radius-s);
  color: var(--black);
  font-size: 15px;
  line-height: 1.4;
  text-decoration: none;
  transition: background 180ms var(--ease);
}

.page-faq .faq-nav__link:hover {
  background: rgba(0, 229, 208, 0.16);
}

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

.page-faq .faq-nav__num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gray);
}

.page-faq .faq-nav__count {
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--ink);
  color: var(--cyan-soft);
}

.page-faq .faq-nav__note {
  margin: 18px 0 0;
  padding: 14px 16px;
  border-radius: var(--radius-m);
  background: var(--ink-2);
  color: rgba(244, 247, 248, 0.86);
  font-size: 13.5px;
  line-height: 1.75;
}

.page-faq .faq-nav__note strong {
  font-family: var(--font-mono);
  color: var(--cyan-soft);
}

/* 问答流 */
.page-faq .faq-group {
  scroll-margin-top: calc(var(--topbar-h) + 24px);
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(34px, 4vw, 56px);
}

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--gray);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(21px, 2.4vw, 28px);
  font-weight: 700;
  line-height: 1.25;
  color: var(--black);
}

.page-faq .faq-group__badge {
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 3px 9px;
  border: 1px solid var(--cyan);
  border-radius: 999px;
  color: var(--ink-2);
}

.page-faq .faq-group__brief {
  margin: 16px 0 4px;
  padding: 12px 16px;
  border-left: 3px solid var(--cyan);
  border-radius: 0 var(--radius-s) var(--radius-s) 0;
  background: var(--faq-cyan-wash);
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ink-3);
}

.page-faq .faq-figure {
  margin: 20px 0 8px;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--faq-hair);
  border-radius: var(--radius-m);
}

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--gray);
}

/* 价格横条 */
.page-faq .price-strip {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 20px 0 10px;
  background: var(--faq-hair);
  border: 1px solid var(--faq-hair);
  border-radius: var(--radius-m);
  overflow: hidden;
}

.page-faq .price-strip__cell {
  display: grid;
  gap: 5px;
  padding: 14px 16px;
  background: var(--paper);
}

.page-faq .price-strip__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--gray);
  line-height: 1.5;
}

.page-faq .price-strip__value {
  font-family: var(--font-mono);
  font-size: 21px;
  font-weight: 700;
  color: var(--ink);
}

.page-faq .price-strip__cell--pick {
  background: var(--ink);
}

.page-faq .price-strip__cell--pick .price-strip__label {
  color: var(--cyan-soft);
}

.page-faq .price-strip__cell--pick .price-strip__value {
  color: var(--orange-soft);
}

/* 折叠问答 */
.page-faq .qa {
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .qa summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  padding: 16px 0;
  list-style: none;
  cursor: pointer;
  font-size: 16px;
  font-weight: 500;
  line-height: 1.6;
  color: var(--black);
}

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

.page-faq .qa summary::after {
  content: "+";
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border: 1px solid var(--faq-hair);
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--ink-2);
  transition: background 180ms var(--ease), color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-faq .qa[open] summary::after {
  content: "–";
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink);
}

.page-faq .qa summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 6px;
}

.page-faq .qa__a {
  margin: 0 0 18px 1px;
  padding: 2px 0 2px 16px;
  border-left: 2px solid var(--cyan);
}

.page-faq .qa__a p {
  margin: 0;
  max-width: 68ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--ink-3);
}

/* 联系区块 */
.page-faq .faq-contact {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: var(--paper);
  padding: clamp(40px, 5vw, 80px) 0;
}

.page-faq .faq-contact::after {
  content: "";
  position: absolute;
  right: -90px;
  top: -70px;
  width: 300px;
  height: 300px;
  border-radius: 46% 54% 62% 38%;
  background: radial-gradient(circle at 32% 32%, rgba(0, 229, 208, 0.26), transparent 70%);
  pointer-events: none;
}

.page-faq .faq-contact .container {
  position: relative;
  z-index: 1;
}

.page-faq .faq-contact__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 48px);
  align-items: start;
}

.page-faq .faq-contact .eyebrow {
  color: var(--cyan);
}

.page-faq .faq-contact h2 {
  margin: 12px 0 16px;
  font-size: clamp(24px, 3.2vw, 38px);
  font-weight: 800;
  line-height: 1.22;
}

.page-faq .faq-contact__lead p {
  max-width: 38em;
  margin: 0 0 18px;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(244, 247, 248, 0.82);
}

.page-faq .faq-contact__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  font-family: var(--font-mono);
  font-size: 13.5px;
}

.page-faq .faq-contact__links a {
  padding-bottom: 3px;
  border-bottom: 1px solid var(--cyan);
  color: var(--cyan-soft);
  text-decoration: none;
}

.page-faq .faq-contact__links a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
}

.page-faq .contact-card {
  display: grid;
  gap: 16px;
  padding: 20px;
  border: 1px solid var(--faq-hair-dark);
  border-radius: var(--radius-m);
  background: rgba(8, 36, 59, 0.74);
}

.page-faq .contact-card__row {
  display: grid;
  gap: 4px;
}

.page-faq .contact-card__key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan-soft);
}

.page-faq .contact-card__value {
  font-size: 16px;
  line-height: 1.6;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-faq .contact-card__note {
  margin: 0;
  padding-top: 14px;
  border-top: 1px solid var(--faq-hair-dark);
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(244, 247, 248, 0.72);
}

/* 断点 */
@media (min-width: 720px) {
  .page-faq .price-strip {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 56px;
  }

  .page-faq .faq-layout {
    grid-template-columns: var(--faq-nav-w) minmax(0, 1fr);
  }

  .page-faq .faq-nav {
    position: sticky;
    top: calc(var(--topbar-h) + 24px);
  }

  .page-faq .faq-contact__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 56px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa summary::after,
  .page-faq .faq-nav__link {
    transition: none;
  }
}
<<<END>>>