.page-faq {
  --faq-gap: clamp(16px, 3vw, 32px);
  --faq-line-soft: rgba(46, 78, 98, 0.6);
  --faq-ink-dim: #87958F;
  background: var(--night);
  color: var(--cream);
  overflow-x: hidden;
}

.page-faq * {
  min-width: 0;
}

.page-faq .faq-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 20px;
  padding-top: clamp(18px, 4vw, 34px);
}

.page-faq .faq-head .coord {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--stone);
  margin: 0;
}

/* ---------- Hero ---------- */
.page-faq .faq-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
  padding-top: clamp(16px, 3vw, 30px);
  padding-bottom: clamp(40px, 6vw, 76px);
}

.page-faq .faq-kicker {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--lime);
}

.page-faq .faq-hero h1 {
  margin: 0 0 16px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(30px, 7vw, 54px);
  line-height: 1.18;
  letter-spacing: 0.01em;
  color: var(--cream);
}

.page-faq .faq-lead {
  margin: 0;
  max-width: 34em;
  font-size: clamp(14px, 1.6vw, 16px);
  line-height: 1.85;
  color: rgba(255, 246, 228, 0.82);
}

.page-faq .faq-hero__chips {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .faq-hero__visual {
  position: relative;
  border: 1px solid var(--line);
  background: linear-gradient(165deg, rgba(15, 43, 39, 0.95), rgba(11, 27, 43, 0.98));
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
  padding: 10px;
  overflow: hidden;
}

.page-faq .faq-hero__visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(135deg, rgba(255, 246, 228, 0.035) 0 1px, transparent 1px 9px);
  pointer-events: none;
}

.page-faq .faq-hero__visual svg {
  display: block;
  width: 100%;
  height: auto;
}

/* ---------- 章节头 ---------- */
.page-faq .faq-sec-head {
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-faq .faq-sec-head .coord {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--moss-line);
}

.page-faq .faq-sec-head h2 {
  margin: 0 0 14px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(23px, 4vw, 34px);
  line-height: 1.3;
  color: var(--cream);
}

/* ---------- 图片 ---------- */
.page-faq .figure {
  margin: 0 0 clamp(20px, 3vw, 30px);
}

.page-faq .figure__frame {
  border: 1px solid var(--line);
  background: var(--steel);
  overflow: hidden;
}

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

.page-faq .figure__cap {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  color: var(--stone);
}

/* ---------- 检查清单 ---------- */
.page-faq .faq-check {
  padding-bottom: clamp(44px, 6vw, 80px);
}

.page-faq .faq-check__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.page-faq .faq-check__item {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 16px 16px 14px;
  border: 1px solid var(--faq-line-soft);
  background: rgba(27, 52, 70, 0.42);
  cursor: pointer;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-check__item:hover {
  border-color: var(--moss-line);
  background: rgba(27, 52, 70, 0.62);
}

.page-faq .faq-ck {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-faq .faq-ck__box {
  position: relative;
  flex: 0 0 22px;
  width: 22px;
  height: 22px;
  margin-top: 2px;
  border: 1px solid var(--wire);
  background: rgba(11, 27, 43, 0.6);
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-ck__box::after {
  content: "";
  position: absolute;
  left: 7px;
  top: 2px;
  width: 6px;
  height: 12px;
  border-right: 2px solid var(--night);
  border-bottom: 2px solid var(--night);
  transform: rotate(42deg) scale(0);
  transform-origin: center;
  transition: transform var(--dur) var(--ease);
}

.page-faq .faq-ck:checked + .faq-ck__box {
  background: var(--lime);
  border-color: var(--lime);
}

.page-faq .faq-ck:checked + .faq-ck__box::after {
  transform: rotate(42deg) scale(1);
}

.page-faq .faq-ck:focus-visible + .faq-ck__box {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
}

.page-faq .faq-ck__body {
  display: block;
  flex: 1 1 auto;
}

.page-faq .faq-ck__num {
  display: inline-block;
  margin-right: 8px;
  font-family: var(--font-num);
  font-size: 15px;
  letter-spacing: 0.06em;
  color: var(--moss-line);
}

.page-faq .faq-ck__body strong {
  display: inline;
  font-size: 15px;
  font-weight: 600;
  color: var(--cream);
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-ck:checked ~ .faq-ck__body strong {
  color: var(--lime);
}

.page-faq .faq-ck__desc {
  display: block;
  margin-top: 8px;
  font-size: 13.5px;
  line-height: 1.75;
  color: rgba(255, 246, 228, 0.68);
}

.page-faq .faq-ck:checked ~ .faq-ck__body .faq-ck__desc {
  color: var(--stone);
}

/* ---------- 四步排查 ---------- */
.page-faq .faq-steps {
  background: var(--moss);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding-block: clamp(40px, 6vw, 82px);
}

.page-faq .faq-steps__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 4vw, 48px);
}

.page-faq .faq-steps__rail .coord {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--lime);
}

.page-faq .faq-steps__rail h2 {
  margin: 0 0 12px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(22px, 3.4vw, 30px);
  line-height: 1.32;
  color: var(--cream);
}

.page-faq .faq-steps__note {
  margin: 0 0 18px;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 246, 228, 0.74);
}

.page-faq .faq-steps__index {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--faq-line-soft);
}

.page-faq .faq-steps__index li {
  border-bottom: 1px solid var(--faq-line-soft);
}

.page-faq .faq-steps__index a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 2px;
  color: var(--cream);
  text-decoration: none;
  font-size: 14.5px;
  transition: color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}

.page-faq .faq-steps__index a:hover,
.page-faq .faq-steps__index a:focus-visible {
  color: var(--lime);
  padding-left: 8px;
}

.page-faq .faq-steps__i {
  font-family: var(--font-num);
  font-size: 17px;
  letter-spacing: 0.05em;
  color: var(--moss-line);
}

.page-faq .faq-steps__index a:hover .faq-steps__i {
  color: var(--lime);
}

.page-faq .faq-steps__foot {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--stone);
}

.page-faq .faq-steps__foot a {
  color: var(--amber);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 178, 74, 0.5);
}

.page-faq .faq-steps__cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-faq .faq-step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  padding: 18px 18px 20px;
  border: 1px solid var(--faq-line-soft);
  border-left: 2px solid var(--lime);
  background: rgba(11, 27, 43, 0.55);
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-step:hover {
  background: rgba(11, 27, 43, 0.78);
}

.page-faq .faq-step__num {
  font-family: var(--font-num);
  font-size: clamp(30px, 5vw, 42px);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--wire);
}

.page-faq .faq-step__body h3 {
  margin: 0 0 12px;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 16.5px;
  line-height: 1.45;
  color: var(--cream);
}

.page-faq .faq-step__dl {
  margin: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}

.page-faq .faq-step__dl dt {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--moss-line);
}

.page-faq .faq-step__dl dd {
  margin: 0 0 4px;
  font-size: 13.5px;
  line-height: 1.75;
  color: rgba(255, 246, 228, 0.74);
}

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

.page-faq .faq-steps__figure .figure__frame {
  background: var(--steel);
  border-color: var(--faq-line-soft);
}

/* ---------- 问答折叠 ---------- */
.page-faq .faq-q {
  padding-block: clamp(44px, 6vw, 82px);
}

.page-faq .faq-acc {
  border-top: 1px solid var(--faq-line-soft);
}

.page-faq .faq-acc .acc__item {
  border-bottom: 1px solid var(--faq-line-soft);
}

.page-faq .faq-acc .acc__item h3 {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
}

.page-faq .faq-acc .acc__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 18px 4px;
  background: none;
  border: 0;
  text-align: left;
  font-family: var(--font-sans);
  font-size: clamp(14.5px, 1.8vw, 16px);
  font-weight: 600;
  line-height: 1.5;
  color: var(--cream);
  cursor: pointer;
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-acc .acc__trigger:hover,
.page-faq .faq-acc .acc__trigger:focus-visible {
  color: var(--lime);
}

.page-faq .faq-acc .acc__icon {
  position: relative;
  flex: 0 0 18px;
  width: 18px;
  height: 18px;
  border: 1px solid var(--wire);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .faq-acc .acc__icon::before,
.page-faq .faq-acc .acc__icon::after {
  content: "";
  position: absolute;
  background: var(--stone);
  transition: background var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .faq-acc .acc__icon::before {
  left: 4px;
  top: 8px;
  width: 8px;
  height: 1px;
}

.page-faq .faq-acc .acc__icon::after {
  left: 8px;
  top: 4px;
  width: 1px;
  height: 8px;
}

.page-faq .faq-acc .acc__trigger[aria-expanded="true"] .acc__icon {
  border-color: var(--lime);
  transform: rotate(180deg);
}

.page-faq .faq-acc .acc__trigger[aria-expanded="true"] .acc__icon::before,
.page-faq .faq-acc .acc__trigger[aria-expanded="true"] .acc__icon::after {
  background: var(--lime);
}

.page-faq .faq-acc .acc__panel {
  padding: 0 4px 20px;
}

.page-faq .faq-acc .acc__panel p {
  margin: 0 0 10px;
  max-width: 68ch;
  font-size: 13.8px;
  line-height: 1.85;
  color: rgba(255, 246, 228, 0.74);
}

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

.page-faq .faq-acc .acc__panel a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(198, 255, 82, 0.45);
}

.page-faq .faq-acc .acc__panel a:hover {
  border-bottom-color: var(--lime);
}

/* ---------- 反馈准备 ---------- */
.page-faq .faq-feedback {
  padding-bottom: clamp(48px, 7vw, 96px);
}

.page-faq .faq-feedback__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 3vw, 30px);
  align-items: start;
}

.page-faq .faq-feedback__panel {
  padding: clamp(20px, 3.4vw, 34px);
  border: 1px solid var(--faq-line-soft);
  border-top: 2px solid var(--amber);
}

.page-faq .faq-feedback__panel .coord {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--amber);
}

.page-faq .faq-feedback__panel h2 {
  margin: 0 0 14px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(22px, 3.4vw, 30px);
  line-height: 1.32;
  color: var(--cream);
}

.page-faq .faq-need {
  list-style: none;
  margin: 20px 0 24px;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--faq-line-soft);
  border: 1px solid var(--faq-line-soft);
}

.page-faq .faq-need li {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 12px 14px;
  background: rgba(11, 27, 43, 0.7);
}

.page-faq .faq-need__k {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--lime);
}

.page-faq .faq-need li > span:last-child {
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(255, 246, 228, 0.76);
}

.page-faq .faq-side h3 {
  margin: 0 0 12px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 18px;
  color: var(--cream);
}

.page-faq .faq-side__list {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  border-top: 1px solid var(--faq-line-soft);
}

.page-faq .faq-side__list li {
  border-bottom: 1px solid var(--faq-line-soft);
}

.page-faq .faq-side__list a {
  display: block;
  padding: 12px 2px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--cream);
  text-decoration: none;
  transition: color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}

.page-faq .faq-side__list a:hover,
.page-faq .faq-side__list a:focus-visible {
  color: var(--lime);
  padding-left: 8px;
}

.page-faq .faq-side__note {
  margin: 0;
  padding: 14px 16px;
  border-left: 2px solid var(--amber);
  background: rgba(27, 52, 70, 0.5);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.85;
  color: var(--stone);
  overflow-wrap: anywhere;
}

/* ---------- 桌面布局 ---------- */
@media (min-width: 820px) {
  .page-faq .faq-check__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }

  .page-faq .faq-step__dl {
    grid-template-columns: 84px minmax(0, 1fr);
    gap: 6px 14px;
    align-items: baseline;
  }

  .page-faq .faq-step__dl dd {
    margin-bottom: 8px;
  }

  .page-faq .faq-need li {
    grid-template-columns: 88px minmax(0, 1fr);
    gap: 12px;
    align-items: baseline;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: end;
    gap: clamp(28px, 4vw, 56px);
  }

  .page-faq .faq-steps__inner {
    grid-template-columns: minmax(0, 3fr) minmax(0, 8fr);
    align-items: start;
    gap: clamp(32px, 4vw, 56px);
  }

  .page-faq .faq-steps__rail {
    position: sticky;
    top: 24px;
  }

  .page-faq .faq-feedback__inner {
    grid-template-columns: minmax(0, 8fr) minmax(0, 3fr);
    gap: clamp(24px, 3vw, 40px);
  }

  .page-faq .faq-steps__figure {
    grid-column: 1 / -1;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-steps__cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }

  .page-faq .faq-steps__figure {
    grid-column: 1 / -1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-ck__box::after,
  .page-faq .faq-acc .acc__icon,
  .page-faq .faq-check__item,
  .page-faq .faq-step {
    transition: none;
  }
}
<<<END>>>