.page-faq {
  --faq-node: 38px;
  --faq-dash: rgba(139, 149, 163, .42);
  --faq-gap: 28px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 30px 0 36px;
  background:
    radial-gradient(70% 90% at 8% -10%, rgba(255, 90, 31, .16), transparent 60%),
    radial-gradient(60% 80% at 96% 0%, rgba(61, 123, 255, .15), transparent 62%),
    linear-gradient(180deg, var(--c-panel) 0%, var(--c-space) 100%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(139, 149, 163, .08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(139, 149, 163, .08) 1px, transparent 1px);
  background-size: 96px 96px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .9), transparent 88%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .9), transparent 88%);
}

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

.page-faq .faq-hero .page-title {
  margin: 10px 0 0;
  max-width: 18em;
}

.page-faq .faq-hero .lede {
  margin: 16px 0 0;
  max-width: 62ch;
}

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 26px;
}

.page-faq .faq-jump a {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .02em;
  color: var(--text-soft);
  text-decoration: none;
  padding: 7px 14px 7px 12px;
  border: 1px solid var(--line);
  background: rgba(27, 42, 58, .6);
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 8px 100%, 0 calc(100% - 8px));
  transition: color .16s var(--ease), background .16s var(--ease), border-color .16s var(--ease);
}

.page-faq .faq-jump a:hover {
  color: var(--c-space);
  background: var(--c-lime);
  border-color: var(--c-lime);
}

.page-faq .faq-jump a:focus-visible {
  outline: 2px solid var(--c-blue);
  outline-offset: 2px;
}

.page-faq .faq-hero__meta {
  list-style: none;
  margin: 26px 0 0;
  padding: 18px 0 0;
  border-top: 1px solid var(--line-soft);
  display: grid;
  gap: 12px;
}

.page-faq .faq-hero__meta li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  font-size: .9rem;
  line-height: 1.6;
  color: var(--text-soft);
}

.page-faq .faq-hero__meta .mono {
  flex: none;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .08em;
  color: var(--c-paper);
  border: 1px solid rgba(231, 216, 174, .38);
  padding: 2px 7px;
}

/* ---------- 章节骨架 ---------- */
.page-faq .faq-section {
  position: relative;
  padding: 54px 0;
  scroll-margin-top: 110px;
}

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

.page-faq .faq-section + .faq-section::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 20px;
  width: 48px;
  height: 2px;
  background: var(--c-orange);
  clip-path: polygon(0 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
}

.page-faq .section-head {
  margin-bottom: 18px;
}

.page-faq .section-head + .prose {
  margin-top: 0;
}

.page-faq .faq-section:target .section-head__num {
  background: var(--c-orange);
  color: var(--c-space);
  border-color: var(--c-orange);
}

.page-faq .prose a {
  color: var(--c-paper);
  text-decoration: underline;
  text-decoration-color: rgba(231, 216, 174, .45);
  text-underline-offset: 3px;
}

.page-faq .prose a:hover {
  color: var(--c-lime);
  text-decoration-color: var(--c-lime);
}

/* ---------- 四步流程 ---------- */
.page-faq .faq-flow {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .faq-flow__item {
  position: relative;
  padding: 22px 20px 20px;
  background: linear-gradient(160deg, var(--c-panel) 0%, #16222F 100%);
  border: 1px solid var(--line-soft);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
  overflow: hidden;
}

.page-faq .faq-flow__item::before {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 30px;
  height: 3px;
  background: var(--c-orange);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .22s var(--ease);
}

.page-faq .faq-flow__item:hover::before,
.page-faq .faq-flow__item:focus-within::before {
  transform: scaleX(1);
}

.page-faq .faq-flow__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--faq-node);
  height: var(--faq-node);
  border-radius: 50%;
  border: 1px solid var(--c-orange);
  color: var(--c-orange);
  font-family: var(--font-mono);
  font-size: .95rem;
  font-weight: 500;
  margin-bottom: 14px;
}

.page-faq .faq-flow__title {
  margin: 0 0 8px;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.06rem;
  letter-spacing: -.01em;
  color: var(--text);
}

.page-faq .faq-flow__item p {
  margin: 0;
  font-size: .92rem;
  line-height: 1.7;
  color: var(--text-soft);
}

.page-faq .faq-flow__time {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px dashed var(--line-soft);
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .04em;
  color: var(--c-paper);
}

.page-faq .faq-flow__figure {
  margin: 32px 0 0;
}

.page-faq .media-frame img {
  display: block;
  max-width: 100%;
  height: auto;
}

/* ---------- 现象分类 ---------- */
.page-faq .faq-sym {
  display: grid;
  gap: 12px;
  margin-top: 6px;
}

.page-faq .faq-sym__item {
  background: var(--c-panel);
  border: 1px solid var(--line-soft);
  border-left: 2px solid var(--line);
  transition: border-color .2s var(--ease), background .2s var(--ease);
}

.page-faq .faq-sym__item:nth-child(even) {
  background: var(--c-graphite);
}

.page-faq .faq-sym__item[open] {
  border-left-color: var(--c-orange);
  background: var(--c-panel);
}

.page-faq .faq-sym__item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 17px 18px;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.55;
  color: var(--text);
  transition: color .16s var(--ease);
}

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

.page-faq .faq-sym__item summary::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 1.15rem;
  line-height: 1.2;
  color: var(--c-orange);
}

.page-faq .faq-sym__item[open] summary::after {
  content: "−";
}

.page-faq .faq-sym__item summary:hover {
  color: var(--c-lime);
}

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

.page-faq .faq-sym__idx {
  flex: none;
  width: 24px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line-strong);
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--c-paper);
  margin-top: 1px;
}

.page-faq .faq-sym__body {
  padding: 0 18px 20px 54px;
}

.page-faq .faq-sym__body p {
  margin: 0 0 10px;
  font-size: .92rem;
  line-height: 1.75;
  color: var(--text-soft);
}

.page-faq .faq-sym__body p.faq-sym__act {
  margin-bottom: 0;
  padding-left: 12px;
  border-left: 2px solid var(--c-lime);
  color: var(--text);
}

/* ---------- 版本对照 ---------- */
.page-faq .faq-verse {
  margin-top: 6px;
  border: 1px solid var(--line-soft);
  background: rgba(27, 42, 58, .5);
}

.page-faq .faq-verse__row {
  display: grid;
  gap: 10px;
  padding: 18px 20px;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-verse__row:first-of-type {
  border-top: 0;
}

.page-faq .faq-verse__row p {
  margin: 0;
  font-size: .92rem;
  line-height: 1.72;
  color: var(--text-soft);
}

.page-faq .faq-verse__row--old {
  background: rgba(20, 24, 29, .55);
}

.page-faq .faq-verse__row--now {
  background: rgba(199, 242, 74, .07);
}

.page-faq .faq-verse__row--now p {
  color: var(--text);
}

.page-faq .faq-verse__note {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .03em;
  color: var(--text-muted);
}

/* ---------- 替换资料 ---------- */
.page-faq .faq-ops {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-ops li {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px dashed var(--line-soft);
}

.page-faq .faq-ops li:first-child {
  padding-top: 0;
}

.page-faq .faq-ops li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-faq .faq-ops li > .mono {
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: .84rem;
  color: var(--c-orange);
}

.page-faq .faq-ops h3 {
  margin: 0 0 6px;
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--text);
}

.page-faq .faq-ops p {
  margin: 0;
  font-size: .92rem;
  line-height: 1.72;
  color: var(--text-soft);
}

.page-faq .faq-caution {
  margin-top: 28px;
  padding: 22px;
  background: var(--c-paper);
  color: var(--c-graphite);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
}

.page-faq .faq-caution h3 {
  margin: 0 0 14px;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: -.01em;
  color: var(--c-graphite);
}

.page-faq .faq-caution ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 11px;
}

.page-faq .faq-caution li {
  position: relative;
  padding-left: 18px;
  font-size: .89rem;
  line-height: 1.65;
}

.page-faq .faq-caution li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .6em;
  width: 9px;
  height: 2px;
  background: var(--c-orange);
}

/* ---------- 入口复核 ---------- */
.page-faq .faq-entry {
  display: grid;
  gap: 14px;
  margin-top: 6px;
}

.page-faq .faq-entry__col {
  padding: 22px;
}

.page-faq .faq-entry__col .mono {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--c-paper);
}

.page-faq .faq-entry__col h3 {
  margin: 10px 0 8px;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--text);
}

.page-faq .faq-entry__col p {
  margin: 0;
  font-size: .92rem;
  line-height: 1.72;
  color: var(--text-soft);
}

/* ---------- 反馈准备 ---------- */
.page-faq .faq-need {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-need li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 18px 20px;
  background: var(--c-panel);
  border: 1px solid var(--line-soft);
}

.page-faq .faq-need__k {
  padding-top: 2px;
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--c-lime);
}

.page-faq .faq-need h3 {
  margin: 0 0 6px;
  font-size: .99rem;
  font-weight: 700;
  color: var(--text);
}

.page-faq .faq-need p {
  margin: 0;
  font-size: .89rem;
  line-height: 1.68;
  color: var(--text-soft);
}

.page-faq .faq-codebox {
  margin-top: 24px;
  padding: 24px 22px;
  background: linear-gradient(140deg, rgba(27, 42, 58, .95), rgba(20, 24, 29, .95));
  border: 1px solid var(--line-soft);
  border-left: 2px solid var(--c-orange);
}

.page-faq .faq-codebox__lead {
  margin: 0 0 14px;
  font-size: .94rem;
  line-height: 1.72;
  color: var(--text-soft);
}

.page-faq .faq-codebox__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  border-top: 1px dashed var(--line-soft);
}

.page-faq .faq-codebox__lead + .faq-codebox__row {
  border-top: 0;
  padding-top: 0;
}

.page-faq .faq-codebox__hint {
  margin: 16px 0 0;
  font-size: .88rem;
  line-height: 1.7;
  color: var(--c-lime);
}

.page-faq .faq-codebox__figure {
  margin: 28px 0 0;
}

/* ---------- 下一步 ---------- */
.page-faq .faq-next {
  position: relative;
  overflow: hidden;
  display: grid;
  gap: 24px;
  padding: 28px 22px;
}

.page-faq .faq-next::after {
  content: "";
  position: absolute;
  right: -70px;
  bottom: -70px;
  width: 230px;
  height: 230px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 90, 31, .22), transparent 70%);
  pointer-events: none;
}

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

.page-faq .faq-next__text .mono {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--c-orange);
}

.page-faq .faq-next__text h2 {
  margin: 10px 0 12px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.5rem, 3.4vw, 2.1rem);
  letter-spacing: -.01em;
  line-height: 1.3;
  color: var(--text);
}

.page-faq .faq-next__text p {
  margin: 0 0 10px;
  max-width: 62ch;
  font-size: .94rem;
  line-height: 1.75;
  color: var(--text-soft);
}

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

.page-faq .faq-next__actions {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 560px) {
  .page-faq .faq-hero {
    padding: 40px 0 44px;
  }

  .page-faq .faq-sym__body {
    padding-left: 56px;
  }
}

@media (min-width: 768px) {
  .page-faq .faq-section {
    padding: 72px 0;
  }

  .page-faq .faq-hero__meta {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }

  .page-faq .faq-flow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .page-faq .faq-verse__row {
    grid-template-columns: 120px minmax(0, 1fr);
    align-items: start;
    gap: 22px;
  }

  .page-faq .faq-verse__row > .tag {
    justify-self: start;
  }

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

  .page-faq .faq-next {
    padding: 34px 30px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-entry {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-faq .faq-next {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 32px;
  }

  .page-faq .faq-caution {
    margin-top: 0;
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--faq-gap);
  }

  .page-faq .faq-flow__item::after {
    content: "";
    position: absolute;
    top: calc(22px + var(--faq-node) / 2);
    right: calc(-1 * var(--faq-gap));
    width: var(--faq-gap);
    height: 1px;
    background-image: linear-gradient(90deg, var(--faq-dash) 0 6px, transparent 6px 12px);
    background-size: 12px 1px;
    background-repeat: repeat-x;
    pointer-events: none;
  }

  .page-faq .faq-flow__item:last-child::after {
    content: none;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-section {
    padding: 92px 0;
  }

  .page-faq .faq-hero {
    padding: 52px 0 52px;
  }
}

@media (max-width: 420px) {
  .page-faq .faq-sym__body {
    padding: 0 16px 18px 16px;
  }

  .page-faq .faq-flow__item {
    padding: 20px 16px 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq * {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }

  .page-faq .faq-flow__item::before {
    transform: none;
  }
}
<<<END>>>