.page-faq {
  background: var(--night-base);
  color: var(--cool-white);
  font-family: var(--font-sans);
  padding-bottom: clamp(24px, 5vw, 56px);
  overflow-x: hidden;
}

/* ---------- 面包屑 ---------- */
.page-faq .crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist-gray);
  margin-bottom: clamp(16px, 3vw, 26px);
}
.page-faq .crumb__link {
  color: var(--mist-gray);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}
.page-faq .crumb__link:hover,
.page-faq .crumb__link:focus-visible {
  color: var(--neon-green);
  border-color: var(--neon-green);
  outline: none;
}
.page-faq .crumb__sep {
  color: var(--grid-line);
}
.page-faq .crumb__now {
  color: var(--neon-green);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(26px, 5vw, 56px) 0 clamp(24px, 4vw, 48px);
}
.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -30%;
  left: -12%;
  right: -12%;
  bottom: -10%;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 76px 76px;
  opacity: 0.32;
  transform: rotate(-6deg);
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.85), transparent 72%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.85), transparent 72%);
  pointer-events: none;
}
.page-faq .faq-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}
.page-faq .faq-hero__title {
  margin: 12px 0 18px;
  font-size: clamp(34px, 6vw, 62px);
  line-height: 0.98;
  font-weight: 900;
  letter-spacing: -0.02em;
  max-width: 14ch;
  transform: skewX(-4deg);
  transform-origin: left bottom;
}
.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 52ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--mist-gray);
}
.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(20px, 3vw, 30px);
}
.page-faq .faq-hero__tag {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 7px 13px;
  border: 1px solid var(--grid-line);
  background: rgba(184, 255, 61, 0.06);
  border-radius: 999px 2px 999px 2px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cool-white);
}
.page-faq .faq-hero__tag b {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.04em;
  color: var(--neon-green);
}
.page-faq .faq-hero__figure {
  margin: 0;
}
.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border: 1px solid var(--grid-line);
  clip-path: polygon(0 0, 100% 0, 100% 90%, 0 100%);
}

/* ---------- 主体双栏 ---------- */
.page-faq .faq-board {
  padding-top: clamp(12px, 2.5vw, 24px);
}
.page-faq .faq-board__grid {
  display: grid;
  gap: clamp(22px, 4vw, 36px);
}
.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--neon-green);
}
.page-faq .faq-index__list {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  scrollbar-width: thin;
}
.page-faq .faq-index__list li {
  flex: 0 0 auto;
}
.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 9px 12px;
  border: 1px solid var(--grid-line);
  border-left: 2px solid var(--grid-line);
  border-radius: 2px 10px 2px 10px;
  color: var(--mist-gray);
  text-decoration: none;
  font-size: 13.5px;
  white-space: nowrap;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}
.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--cool-white);
  border-color: var(--neon-green);
  background: rgba(184, 255, 61, 0.07);
  outline: none;
}
.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--neon-green);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: 88px;
}
.page-faq .faq-group + .faq-group {
  margin-top: clamp(34px, 5vw, 60px);
}
.page-faq .faq-group__head {
  margin-bottom: clamp(10px, 2vw, 18px);
}
.page-faq .faq-group__kicker {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--electric-orange);
}
.page-faq .faq-group__title {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0;
  font-size: clamp(22px, 3.4vw, 30px);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.01em;
  transform: skewX(-3deg);
  transform-origin: left center;
}
.page-faq .faq-group__title::before {
  content: "";
  flex: 0 0 auto;
  width: 4px;
  height: 1em;
  background: var(--neon-green);
}
.page-faq .faq-group__note {
  margin: 12px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist-gray);
}
.page-faq .faq-group__cta {
  margin: clamp(20px, 3vw, 28px) 0 0;
}

/* ---------- 折叠问答 ---------- */
.page-faq .qa {
  border-bottom: 1px solid var(--grid-line);
}
.page-faq .qa:first-of-type {
  border-top: 1px solid var(--grid-line);
}
.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 4px 16px 0;
  cursor: pointer;
  list-style: none;
  font-size: clamp(15px, 1.7vw, 17px);
  font-weight: 700;
  line-height: 1.55;
  color: var(--cool-white);
  transition: color 0.2s var(--ease);
}
.page-faq .qa__q::-webkit-details-marker {
  display: none;
}
.page-faq .qa__q::after {
  content: "";
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  margin-left: auto;
  margin-top: 7px;
  border-right: 2px solid var(--neon-green);
  border-bottom: 2px solid var(--neon-green);
  transform: rotate(45deg);
  transition: transform 0.25s var(--ease);
}
.page-faq .qa[open] .qa__q::after {
  transform: rotate(-135deg);
}
.page-faq .qa__q:hover,
.page-faq .qa__q:focus-visible {
  color: var(--neon-green);
  outline: none;
}
.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--neon-green);
  outline-offset: 3px;
}
.page-faq .qa__q-num {
  flex: 0 0 auto;
  margin-top: 2px;
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--electric-orange);
}
.page-faq .qa[open] .qa__q-num {
  color: var(--neon-green);
}
.page-faq .qa__a {
  padding: 0 4px 20px 32px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist-gray);
}
.page-faq .qa[open] .qa__a {
  animation: faqRise 0.28s var(--ease) both;
}
.page-faq .qa__a p {
  margin: 0 0 10px;
}
.page-faq .qa__a p:last-child {
  margin-bottom: 0;
}
.page-faq .qa__a a {
  color: var(--neon-green);
  text-decoration: underline;
  text-underline-offset: 3px;
}
@keyframes faqRise {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- 设备组合网格 ---------- */
.page-faq .rig {
  display: grid;
  gap: 12px;
  margin: clamp(16px, 3vw, 24px) 0 clamp(18px, 3vw, 26px);
}
.page-faq .rig__card {
  padding: 15px 16px 16px;
  background: var(--pitch-shadow);
  border: 1px solid var(--grid-line);
  border-radius: 14px 2px 14px 2px;
}
.page-faq .rig__terms {
  display: flex;
  align-items: flex-end;
  gap: 9px;
  margin-bottom: 12px;
  min-height: 36px;
}
.page-faq .rig__plus {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--electric-orange);
  padding-bottom: 4px;
}
.page-faq .rig__term {
  display: block;
  border: 1.5px solid var(--neon-green);
  border-radius: 3px;
}
.page-faq .rig__term--tv {
  width: 54px;
  height: 33px;
}
.page-faq .rig__term--projector {
  width: 46px;
  height: 27px;
  border-color: var(--electric-orange);
  border-radius: 14px 14px 3px 3px;
}
.page-faq .rig__term--box {
  width: 27px;
  height: 27px;
  border-color: var(--mist-gray);
  border-radius: 50%;
}
.page-faq .rig__term--tablet {
  width: 23px;
  height: 31px;
  border-color: var(--cool-white);
}
.page-faq .rig__term--phone {
  width: 15px;
  height: 27px;
  border-color: var(--cool-white);
  border-radius: 5px;
}
.page-faq .rig__name {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--neon-green);
}
.page-faq .rig__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--mist-gray);
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: clamp(16px, 3vw, 24px) 0 clamp(18px, 3vw, 26px);
}
.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 1px solid var(--grid-line);
  border-radius: 14px 2px 14px 2px;
}
.page-faq .faq-figure__cap {
  margin-top: 9px;
  font-size: 12.5px;
  letter-spacing: 0.04em;
  line-height: 1.7;
  color: var(--mist-gray);
}

/* ---------- 四级步骤 ---------- */
.page-faq .steps {
  display: grid;
  gap: 10px;
  margin: clamp(16px, 3vw, 22px) 0 clamp(18px, 3vw, 26px);
  padding: 0;
  list-style: none;
}
.page-faq .step {
  display: flex;
  gap: 12px;
  padding: 13px 14px;
  background: var(--pitch-shadow);
  border: 1px solid var(--grid-line);
  border-radius: 12px 2px 12px 2px;
}
.page-faq .step__num {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--neon-green);
  color: var(--night-base);
  font-size: 12.5px;
  font-weight: 700;
}
.page-faq .step__body {
  min-width: 0;
}
.page-faq .step__title {
  margin: 0 0 3px;
  font-size: 15px;
  font-weight: 700;
  color: var(--cool-white);
}
.page-faq .step__text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--mist-gray);
}

/* ---------- 联系区块 ---------- */
.page-faq .faq-help {
  margin-top: clamp(38px, 6vw, 76px);
  background: var(--paper-warm);
  color: var(--night-base);
  padding: clamp(38px, 6vw, 68px) 0 clamp(30px, 5vw, 56px);
  clip-path: polygon(0 0, 100% 2.6%, 100% 100%, 0 100%);
}
.page-faq .faq-help__grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}
.page-faq .faq-help__kicker {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--deep-green);
}
.page-faq .faq-help__title {
  margin: 0 0 14px;
  font-size: clamp(22px, 3.6vw, 32px);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--night-base);
  max-width: 20ch;
}
.page-faq .faq-help__lead {
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.8;
  color: #33405A;
  max-width: 52ch;
}
.page-faq .faq-help__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 9px;
}
.page-faq .faq-help__item {
  position: relative;
  padding-left: 20px;
  font-size: 14.5px;
  line-height: 1.7;
  color: #24314A;
}
.page-faq .faq-help__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 8px;
  height: 8px;
  background: var(--deep-green);
  border-radius: 1px;
}
.page-faq .faq-help__more {
  margin: 20px 0 0;
}
.page-faq .faq-help__link {
  display: inline-block;
  font-size: 14px;
  font-weight: 700;
  color: var(--night-base);
  text-decoration: none;
  border-bottom: 2px solid var(--deep-green);
  padding-bottom: 2px;
}
.page-faq .faq-help__link:hover,
.page-faq .faq-help__link:focus-visible {
  color: var(--deep-green);
  outline: none;
}

.page-faq .faq-contact {
  background: rgba(8, 13, 24, 0.06);
  border: 1px solid rgba(8, 13, 24, 0.16);
  border-radius: 16px 2px 16px 2px;
  padding: clamp(18px, 3vw, 26px);
}
.page-faq .faq-contact__label {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--deep-green);
}
.page-faq .faq-contact__row {
  display: flex;
  flex-wrap: wrap;
  gap: 2px 14px;
  padding: 10px 0;
  border-top: 1px solid rgba(8, 13, 24, 0.14);
}
.page-faq .faq-contact__row:first-of-type {
  border-top: 0;
  padding-top: 0;
}
.page-faq .faq-contact__key {
  flex: 0 0 auto;
  min-width: 62px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: #4A566E;
  padding-top: 2px;
}
.page-faq .faq-contact__val {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--night-base);
  word-break: break-word;
}
.page-faq .faq-contact__val--mail {
  font-family: var(--font-mono);
  font-size: 13.5px;
  letter-spacing: 0.01em;
}
.page-faq .faq-contact__note {
  margin: 14px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: #4A566E;
}

/* ---------- 响应式 ---------- */
@media (min-width: 560px) {
  .page-faq .rig {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-faq .steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-faq .qa__a {
    padding-left: 40px;
    padding-right: 32px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.72fr);
    align-items: start;
  }
  .page-faq .faq-hero__figure {
    margin-top: -10px;
  }
  .page-faq .faq-help__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.85fr);
    gap: clamp(32px, 4vw, 52px);
  }
}

@media (min-width: 960px) {
  .page-faq .faq-board__grid {
    grid-template-columns: 252px minmax(0, 1fr);
    gap: clamp(36px, 5vw, 60px);
    align-items: start;
  }
  .page-faq .faq-board__aside {
    position: sticky;
    top: 88px;
  }
  .page-faq .faq-index__list {
    display: grid;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }
  .page-faq .faq-index__list li {
    flex: 1 1 auto;
  }
  .page-faq .faq-index__link {
    border: 0;
    border-left: 2px solid var(--grid-line);
    border-radius: 0;
    padding: 10px 12px 10px 14px;
    white-space: normal;
  }
  .page-faq .rig {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-faq .steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa[open] .qa__a {
    animation: none;
  }
  .page-faq .qa__q::after,
  .page-faq .faq-index__link,
  .page-faq .crumb__link {
    transition: none;
  }
}
<<<END>>>