.page-disclaimer {
  --usage-line: rgba(58, 42, 110, .58);
  --usage-line-2: rgba(108, 59, 244, .30);
  --usage-panel: rgba(22, 20, 31, .74);
  --usage-text-soft: rgba(247, 245, 255, .82);
  --usage-rail: 68px;

  background: var(--night-black);
  color: var(--text-white);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-disclaimer .usage-hero {
  position: relative;
  isolation: isolate;
  padding: clamp(22px, 5vw, 48px) 0 clamp(30px, 5vw, 58px);
  border-bottom: 1px solid var(--usage-line);
  background:
    radial-gradient(ellipse 55% 70% at 92% -8%, rgba(108, 59, 244, .40), transparent 68%),
    radial-gradient(ellipse 45% 55% at -6% 108%, rgba(43, 224, 255, .16), transparent 70%),
    var(--night-black);
  overflow: hidden;
}

.page-disclaimer .usage-hero__grid {
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    repeating-linear-gradient(to right, rgba(58, 42, 110, .52) 0 1px, transparent 1px 72px),
    repeating-linear-gradient(to bottom, rgba(58, 42, 110, .52) 0 1px, transparent 1px 72px);
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, .95) 0%, rgba(0, 0, 0, .18) 78%, transparent 100%);
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, .95) 0%, rgba(0, 0, 0, .18) 78%, transparent 100%);
  pointer-events: none;
}

.page-disclaimer .usage-hero__inner {
  position: relative;
}

.page-disclaimer .usage-hero .breadcrumb {
  margin-bottom: clamp(18px, 4vw, 34px);
}

.page-disclaimer .usage-hero__title {
  margin: 10px 0 20px;
  font-family: var(--font-display);
  font-size: clamp(2.3rem, 7.5vw, 4.6rem);
  font-weight: 800;
  letter-spacing: -.035em;
  line-height: 1.02;
  color: var(--text-white);
}

.page-disclaimer .usage-hero__lead {
  max-width: 64ch;
  margin: 0;
  font-size: clamp(.98rem, 2.2vw, 1.12rem);
  color: var(--usage-text-soft);
}

.page-disclaimer .usage-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 18px;
  margin: clamp(26px, 5vw, 44px) 0 0;
}

@media (min-width: 720px) {
  .page-disclaimer .usage-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-disclaimer .usage-hero__stats .stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-left: 12px;
  border-left: 2px solid var(--line-cyan);
}

.page-disclaimer .usage-hero__stats .stat__value {
  font-family: var(--font-mono);
  font-size: clamp(1.1rem, 3vw, 1.45rem);
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--neon-green);
}

.page-disclaimer .usage-hero__stats .stat__label {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .08em;
  color: var(--usage-text-soft);
}

/* ---------- 蓝图视觉 ---------- */
.page-disclaimer .usage-visual-wrap {
  padding-top: clamp(24px, 4vw, 40px);
  padding-bottom: clamp(26px, 4vw, 44px);
}

.page-disclaimer .usage-visual {
  position: relative;
  display: block;
  margin: 0;
  aspect-ratio: 2 / 1;
  overflow: hidden;
  border: 1px solid var(--line-soft);
  background: linear-gradient(140deg, var(--void-gray), var(--night-black));
}

.page-disclaimer .usage-visual img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

.page-disclaimer .usage-visual .media-frame__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 14px 16px;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .04em;
  color: var(--usage-text-soft);
  background: linear-gradient(to top, rgba(11, 10, 18, .94), rgba(11, 10, 18, 0));
}

/* ---------- 章节目录 ---------- */
.page-disclaimer .usage-toc {
  position: relative;
  border-top: 1px solid var(--usage-line);
  border-bottom: 1px solid var(--usage-line);
  background: var(--void-gray);
}

.page-disclaimer .usage-toc__list {
  display: flex;
  gap: 10px;
  margin: 0;
  padding: 14px 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-disclaimer .usage-toc__list::-webkit-scrollbar {
  display: none;
}

.page-disclaimer .usage-toc__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border: 1px solid var(--usage-line-2);
  color: var(--usage-text-soft);
  font-size: .86rem;
  white-space: nowrap;
  text-decoration: none;
  transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}

.page-disclaimer .usage-toc__num {
  font-family: var(--font-mono);
  font-size: .74rem;
  color: var(--ember-orange);
}

.page-disclaimer .usage-toc__link:hover,
.page-disclaimer .usage-toc__link:focus-visible {
  color: var(--text-white);
  border-color: var(--electric-blue);
  background: rgba(43, 224, 255, .10);
}

.page-disclaimer .usage-ruler {
  height: 14px;
  background-image: repeating-linear-gradient(to right, var(--deep-purple) 0 1px, transparent 1px 24px);
  background-repeat: repeat-x;
  background-size: 24px 7px;
  background-position: 0 100%;
}

/* ---------- 章节骨架 ---------- */
.page-disclaimer .usage-sec {
  position: relative;
  padding: clamp(34px, 6vw, 76px) 0;
  border-bottom: 1px solid var(--usage-line);
}

.page-disclaimer .usage-sec__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-disclaimer .usage-sec__rail {
  display: flex;
  align-items: center;
  gap: 12px;
}

.page-disclaimer .usage-sec__num {
  font-family: var(--font-mono);
  font-size: clamp(1.7rem, 5vw, 2.7rem);
  font-weight: 200;
  line-height: 1;
  letter-spacing: -.02em;
  color: rgba(108, 59, 244, .62);
  transition: color .3s var(--ease);
}

.page-disclaimer .usage-sec__tick {
  display: block;
  width: 26px;
  height: 1px;
  background: linear-gradient(to right, var(--ember-orange), rgba(255, 90, 54, 0));
}

.page-disclaimer .usage-sec.is-current .usage-sec__num {
  color: var(--electric-blue);
}

.page-disclaimer .usage-sec.is-current .usage-sec__tick {
  background: linear-gradient(to right, var(--electric-blue), rgba(43, 224, 255, 0));
}

@media (min-width: 880px) {
  .page-disclaimer .usage-sec__grid {
    grid-template-columns: var(--usage-rail) minmax(0, 1fr);
    gap: 34px;
  }

  .page-disclaimer .usage-sec__rail {
    flex-direction: column;
    align-items: flex-start;
    align-self: start;
    gap: 10px;
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }

  .page-disclaimer .usage-sec__tick {
    width: 42px;
  }
}

.page-disclaimer .usage-sec__title {
  max-width: 24ch;
  margin: 10px 0 22px;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4.4vw, 2.3rem);
  font-weight: 800;
  letter-spacing: -.025em;
  line-height: 1.16;
  color: var(--text-white);
}

.page-disclaimer .usage-sec__body > p {
  max-width: 68ch;
  margin: 0 0 18px;
  color: var(--usage-text-soft);
}

.page-disclaimer .usage-sec__body > p:last-child {
  margin-bottom: 0;
}

/* ---------- 等宽条目 ---------- */
.page-disclaimer .usage-steps {
  display: grid;
  gap: 0;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--usage-line);
}

.page-disclaimer .usage-steps__item {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 16px 0;
  border-bottom: 1px solid var(--usage-line);
  transition: background .22s var(--ease), padding-left .22s var(--ease);
}

.page-disclaimer .usage-steps__item:hover {
  background: rgba(108, 59, 244, .10);
  padding-left: 10px;
}

.page-disclaimer .usage-steps__num {
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .06em;
  color: var(--ember-orange);
}

.page-disclaimer .usage-steps__content h3 {
  margin: 0 0 6px;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--text-white);
}

.page-disclaimer .usage-steps__content p {
  margin: 0;
  font-size: .93rem;
  color: var(--usage-text-soft);
}

/* ---------- 引用示例 ---------- */
.page-disclaimer .usage-cite {
  margin: 22px 0 24px;
  padding: 18px 20px;
  border: 1px solid var(--usage-line-2);
  border-left: 3px solid var(--ember-orange);
  background: var(--usage-panel);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}

.page-disclaimer .usage-cite__label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .16em;
  color: var(--ember-orange);
}

.page-disclaimer .usage-cite__sample {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(.82rem, 2.4vw, .96rem);
  line-height: 1.7;
  color: var(--text-white);
  word-break: break-word;
}

/* ---------- 终端卡片 ---------- */
.page-disclaimer .usage-devices {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 26px;
}

@media (min-width: 760px) {
  .page-disclaimer .usage-devices {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }
}

.page-disclaimer .usage-device {
  position: relative;
  padding: 20px 18px 22px;
  border: 1px solid var(--usage-line-2);
  background: var(--usage-panel);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  transition: transform .24s var(--ease), border-color .24s var(--ease);
}

.page-disclaimer .usage-device:hover {
  transform: translateY(-2px);
  border-color: var(--electric-blue);
}

.page-disclaimer .usage-device__screen {
  display: block;
  margin-bottom: 16px;
  border: 1px solid var(--deep-purple);
  box-shadow: inset 0 0 26px rgba(43, 224, 255, .12);
  background-image:
    repeating-linear-gradient(to right, rgba(58, 42, 110, .75) 0 1px, transparent 1px 12px),
    repeating-linear-gradient(to bottom, rgba(58, 42, 110, .75) 0 1px, transparent 1px 12px);
}

.page-disclaimer .usage-device__screen--phone {
  width: 34px;
  height: 58px;
  border-radius: 4px;
}

.page-disclaimer .usage-device__screen--desktop {
  width: 92px;
  height: 56px;
}

.page-disclaimer .usage-device__screen--tv {
  width: 118px;
  height: 66px;
}

.page-disclaimer .usage-device__id {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .18em;
  color: var(--neon-green);
}

.page-disclaimer .usage-device h3 {
  margin: 0 0 10px;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--text-white);
}

.page-disclaimer .usage-device p {
  margin: 0 0 10px;
  font-size: .9rem;
  color: var(--usage-text-soft);
}

.page-disclaimer .usage-device .usage-device__fix {
  margin: 0;
  padding-top: 10px;
  border-top: 1px dashed var(--usage-line-2);
  font-size: .85rem;
}

/* ---------- 适用场合 ---------- */
.page-disclaimer .usage-uses {
  display: grid;
  gap: 12px;
  margin: 24px 0 24px;
  padding: 0;
  list-style: none;
}

@media (min-width: 720px) {
  .page-disclaimer .usage-uses {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }
}

.page-disclaimer .usage-uses li {
  padding: 14px 16px;
  border: 1px solid var(--usage-line-2);
  border-left: 2px solid var(--electric-blue);
  background: rgba(22, 20, 31, .5);
  font-size: .93rem;
  line-height: 1.72;
  color: var(--usage-text-soft);
}

.page-disclaimer .usage-uses__key {
  display: block;
  margin-bottom: 4px;
  font-size: .96rem;
  font-weight: 700;
  color: var(--text-white);
}

/* ---------- 结尾引导 ---------- */
.page-disclaimer .usage-next {
  padding: clamp(38px, 6vw, 72px) 0 clamp(46px, 7vw, 86px);
  border-bottom: 1px solid var(--usage-line);
  background:
    radial-gradient(ellipse 60% 90% at 88% 50%, rgba(108, 59, 244, .28), transparent 70%),
    var(--night-black);
}

.page-disclaimer .usage-next__inner {
  position: relative;
}

.page-disclaimer .usage-next h2 {
  max-width: 26ch;
  margin: 10px 0 16px;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 4vw, 2.1rem);
  font-weight: 800;
  letter-spacing: -.025em;
  line-height: 1.2;
  color: var(--text-white);
}

.page-disclaimer .usage-next p {
  max-width: 64ch;
  margin: 0 0 24px;
  color: var(--usage-text-soft);
}

.page-disclaimer .usage-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
<<<END>>>