.page-faq {
  --faq-rail-w: 236px;
  --faq-cyan-soft: rgba(0, 229, 255, 0.45);
  --faq-panel: linear-gradient(158deg, rgba(16, 42, 69, 0.92), rgba(10, 26, 47, 0.58));
  display: block;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding-block: clamp(38px, 7vw, 88px) clamp(26px, 4vw, 48px);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  right: -18%;
  bottom: -58%;
  width: min(84vw, 640px);
  aspect-ratio: 1;
  background: radial-gradient(circle at 50% 50%, rgba(0, 229, 255, 0.17), rgba(0, 229, 255, 0) 62%);
  pointer-events: none;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  left: -14%;
  top: 12%;
  width: min(64vw, 500px);
  height: 1px;
  background: linear-gradient(90deg, rgba(0, 229, 255, 0), rgba(0, 229, 255, 0.55), rgba(255, 107, 53, 0));
  transform: rotate(-12deg);
  transform-origin: left center;
  pointer-events: none;
}

.page-faq .faq-hero h1 {
  margin: 16px 0 0;
  max-width: 20ch;
  font-size: clamp(29px, 5.6vw, 54px);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: 0.015em;
}

.page-faq .faq-hero__lead {
  margin: 22px 0 0;
  max-width: 62ch;
  font-size: 16.5px;
  line-height: 1.78;
  color: var(--mist);
}

.page-faq .faq-hero__quick {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

/* ---------- 场景分类 ---------- */
.page-faq .faq-scenes {
  padding-block: 0 clamp(48px, 7vw, 84px);
}

.page-faq .faq-scenes__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(176px, 1fr));
  gap: 12px;
}

.page-faq .faq-scene {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 18px 20px;
  border: 1px solid var(--rail);
  border-radius: var(--r-md);
  background: var(--faq-panel);
  color: var(--white);
  text-decoration: none;
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.page-faq .faq-scene:hover,
.page-faq .faq-scene:focus-visible {
  transform: translateY(-4px);
  border-color: var(--faq-cyan-soft);
  box-shadow: var(--shadow-soft);
}

.page-faq .faq-scene__idx {
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-faq .faq-scene__name {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.page-faq .faq-scene__hint {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--mist);
}

/* ---------- 三步路径 ---------- */
.page-faq .faq-path-section {
  padding-block: 0 clamp(56px, 8vw, 96px);
}

.page-faq .faq-path {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--rail);
  border-radius: var(--r-lg);
  background: var(--deep);
}

.page-faq .faq-path__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
}

.page-faq .faq-path__inner {
  position: relative;
  z-index: 1;
  padding: clamp(28px, 4.6vw, 56px);
}

.page-faq .faq-path__copy h2 {
  margin: 12px 0 0;
  max-width: 24ch;
  font-size: clamp(23px, 3.4vw, 36px);
  line-height: 1.22;
  letter-spacing: 0.01em;
}

.page-faq .faq-path__copy p {
  margin: 16px 0 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--mist);
}

.page-faq .faq-path__steps {
  position: relative;
  margin-top: clamp(28px, 4vw, 44px);
}

.page-faq .faq-path__line {
  display: none;
}

.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 26px;
}

.page-faq .faq-step__num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 54px;
  height: 54px;
  border: 2px solid var(--faq-cyan-soft);
  border-radius: 50%;
  background: var(--void);
  color: var(--cyan);
  font-size: 15px;
  letter-spacing: 0.04em;
}

.page-faq .faq-step h3 {
  margin: 16px 0 8px;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.page-faq .faq-step p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 问答主体 ---------- */
.page-faq .faq-shell {
  display: grid;
  gap: clamp(28px, 4vw, 40px);
  padding-block: clamp(48px, 7vw, 88px);
  border-top: 1px solid var(--rail);
}

.page-faq .faq-rail__title {
  margin: 0 0 12px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-faq .faq-rail__list::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-rail__link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border: 1px solid transparent;
  border-radius: var(--r-sm);
  color: var(--mist);
  font-size: 14.5px;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.25s var(--ease), background 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-faq .faq-rail__link::before {
  content: "";
  flex: none;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--rail);
  transition: background 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--white);
  border-color: var(--rail);
  background: rgba(16, 42, 69, 0.55);
}

.page-faq .faq-rail__link:hover::before,
.page-faq .faq-rail__link:focus-visible::before {
  background: var(--cyan);
  box-shadow: 0 0 10px rgba(0, 229, 255, 0.7);
}

.page-faq .faq-group {
  scroll-margin-top: 88px;
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(36px, 5vw, 64px);
}

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

.page-faq .faq-group__idx {
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-faq .faq-group__head h2 {
  margin: 0;
  font-size: clamp(20px, 2.6vw, 26px);
  letter-spacing: 0.01em;
}

.page-faq .qa {
  border: 1px solid var(--rail);
  border-radius: var(--r-md);
  background: rgba(10, 26, 47, 0.72);
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease), box-shadow 0.3s var(--ease), transform 0.3s var(--ease);
}

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

.page-faq .qa[open] {
  border-color: var(--faq-cyan-soft);
  background: var(--glass);
  box-shadow: var(--shadow-soft);
  transform: translateY(-2px);
}

.page-faq .qa__q {
  position: relative;
  cursor: pointer;
  list-style: none;
  padding: 16px 48px 16px 18px;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--white);
  transition: color 0.25s var(--ease);
}

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

.page-faq .qa__q::after {
  content: "";
  position: absolute;
  right: 20px;
  top: 50%;
  width: 9px;
  height: 9px;
  margin-top: -6px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(45deg);
  transition: transform 0.3s var(--ease), margin-top 0.3s var(--ease);
}

.page-faq .qa[open] > .qa__q::after {
  transform: rotate(-135deg);
  margin-top: -3px;
}

.page-faq .qa__q:hover {
  color: var(--cyan);
}

.page-faq .qa__a {
  position: relative;
  padding: 14px 18px 18px;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.78;
}

.page-faq .qa__a::before {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  top: 0;
  height: 1px;
  background: linear-gradient(90deg, rgba(0, 229, 255, 0.3), rgba(30, 58, 92, 0.12));
}

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

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

.page-faq .qa__a strong {
  color: var(--white);
  font-weight: 600;
}

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

/* ---------- 版本检查 ---------- */
.page-faq .faq-check-section {
  padding-block: clamp(48px, 7vw, 96px);
  border-top: 1px solid var(--rail);
}

.page-faq .faq-check {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
  align-items: center;
}

.page-faq .faq-check__body h2 {
  margin: 12px 0 0;
  max-width: 22ch;
  font-size: clamp(23px, 3.4vw, 36px);
  line-height: 1.22;
  letter-spacing: 0.01em;
}

.page-faq .faq-check__lead {
  margin: 16px 0 26px;
  max-width: 58ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--mist);
}

.page-faq .faq-check__list {
  list-style: none;
  margin: 0 0 26px;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .faq-check__item {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 18px;
  border: 1px solid var(--rail);
  border-radius: var(--r-md);
  background: rgba(10, 26, 47, 0.6);
}

.page-faq .faq-check__item .mono {
  padding-top: 3px;
  color: var(--cyan);
  font-size: 13px;
  letter-spacing: 0.1em;
}

.page-faq .faq-check__item h3 {
  margin: 0 0 6px;
  font-size: 15.5px;
  font-weight: 700;
}

.page-faq .faq-check__item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-check__figure {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--rail);
  border-radius: var(--r-lg);
  background: var(--deep);
}

.page-faq .faq-check__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  opacity: 0.9;
}

/* ---------- 兼容性 ---------- */
.page-faq .faq-compat-section {
  padding-block: 0 clamp(48px, 7vw, 96px);
}

.page-faq .faq-compat {
  padding: clamp(26px, 4vw, 52px);
  border: 1px solid rgba(255, 197, 61, 0.32);
  border-radius: var(--r-lg);
  background: linear-gradient(142deg, rgba(255, 197, 61, 0.09), rgba(10, 26, 47, 0.92) 46%);
}

.page-faq .faq-compat h2 {
  margin: 16px 0 0;
  max-width: 24ch;
  font-size: clamp(23px, 3.2vw, 34px);
  line-height: 1.24;
}

.page-faq .faq-compat__lead {
  margin: 16px 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--mist);
}

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

.page-faq .faq-compat__grid {
  margin-top: clamp(24px, 3.4vw, 36px);
  display: grid;
  gap: 14px;
}

.page-faq .faq-compat__col {
  padding: 20px;
  border: 1px solid var(--rail);
  border-radius: var(--r-md);
  background: rgba(5, 13, 24, 0.6);
}

.page-faq .faq-compat__col h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 12px;
  font-size: 16px;
}

.page-faq .faq-compat__col h3::before {
  content: "";
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.page-faq .faq-compat__col--ok h3::before {
  background: var(--green);
  box-shadow: 0 0 10px rgba(53, 224, 161, 0.7);
}

.page-faq .faq-compat__col--warn h3::before {
  background: var(--warn);
  box-shadow: 0 0 10px rgba(255, 197, 61, 0.7);
}

.page-faq .faq-compat__col ul {
  margin: 0;
  padding-left: 18px;
  color: var(--mist);
  font-size: 14.5px;
  line-height: 1.8;
}

.page-faq .faq-compat__col li + li {
  margin-top: 6px;
}

/* ---------- 人工支持 ---------- */
.page-faq .faq-contact-section {
  padding-block: 0 clamp(56px, 8vw, 104px);
}

.page-faq .faq-contact {
  display: grid;
  gap: 20px;
}

.page-faq .faq-contact__main h2 {
  margin: 12px 0 0;
  max-width: 22ch;
  font-size: clamp(23px, 3.2vw, 34px);
  line-height: 1.24;
}

.page-faq .faq-contact__prep {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-contact__prep li {
  position: relative;
  padding-left: 26px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-contact__prep li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 10px;
  height: 10px;
  border: 2px solid var(--faq-cyan-soft);
  border-radius: 3px;
}

.page-faq .faq-contact__aside {
  padding: 24px;
  border: 1px solid var(--rail);
  border-radius: var(--r-lg);
  background: var(--faq-panel);
}

.page-faq .faq-contact__aside h3 {
  margin: 0 0 18px;
  font-size: 17px;
}

.page-faq .faq-contact__k {
  margin: 0 0 4px;
  font-size: 12.5px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-faq .faq-contact__v {
  margin: 0 0 16px;
  font-size: 14.5px;
  color: var(--cyan);
  word-break: break-all;
}

.page-faq .faq-contact__note {
  margin: 0 0 20px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-contact__aside .btn {
  width: 100%;
  justify-content: center;
}

/* ---------- 桌面端布局 ---------- */
@media (min-width: 768px) {
  .page-faq .faq-path__line {
    display: block;
    position: absolute;
    top: 27px;
    left: 27px;
    right: 27px;
    width: auto;
    height: 10px;
  }

  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 30px;
  }

  .page-faq .faq-compat__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-check {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
  }

  .page-faq .faq-contact {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    gap: clamp(24px, 3vw, 44px);
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-shell {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: clamp(36px, 4vw, 60px);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 32px;
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    overflow: visible;
    padding-bottom: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-scene,
  .page-faq .qa,
  .page-faq .qa__q::after,
  .page-faq .faq-rail__link {
    transition: none;
  }

  .page-faq .qa[open] {
    transform: none;
  }
}
<<<END>>>