.page-disclaimer {
  --dp-toc: 232px;
  --dp-gap: 3rem;
  background:
    linear-gradient(180deg, rgba(20, 23, 25, .92) 0%, rgba(10, 31, 26, 1) 46%),
    var(--bg);
}

/* ---------- 首屏 ---------- */
.page-disclaimer .usage-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: calc(var(--header-h) + 3.25rem) 0 3.25rem;
  border-bottom: 1px solid var(--line);
}

.page-disclaimer .usage-hero__bg {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.page-disclaimer .usage-hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .3;
  filter: saturate(.65) contrast(1.05);
}

.page-disclaimer .usage-hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(115% 90% at 10% 0%, rgba(10, 31, 26, .5) 0%, rgba(10, 31, 26, .96) 64%),
    linear-gradient(180deg, rgba(10, 31, 26, .72), rgba(10, 31, 26, 1));
}

.page-disclaimer .usage-hero__rule {
  position: absolute;
  inset: auto 0 0 0;
  height: 104px;
  z-index: -1;
  background-image:
    repeating-linear-gradient(90deg, var(--line-soft) 0 1px, transparent 1px 52px),
    repeating-linear-gradient(0deg, var(--line-soft) 0 1px, transparent 1px 26px);
  -webkit-mask-image: linear-gradient(180deg, transparent, #000 82%);
  mask-image: linear-gradient(180deg, transparent, #000 82%);
  opacity: .75;
}

.page-disclaimer .usage-hero__inner {
  position: relative;
  max-width: 880px;
}

.page-disclaimer .usage-hero .breadcrumb {
  margin-bottom: 1.6rem;
  font-size: var(--fs-caption);
  color: var(--text-dim);
}

.page-disclaimer .usage-hero .breadcrumb a {
  color: var(--text-dim);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .25s var(--ease), border-color .25s var(--ease);
}

.page-disclaimer .usage-hero .breadcrumb a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.page-disclaimer .usage-hero__title {
  margin: .5rem 0 0;
  font-size: var(--fs-h1);
  line-height: 1.14;
  font-weight: 800;
  letter-spacing: .02em;
  color: var(--text);
}

.page-disclaimer .usage-hero__title::after {
  content: "";
  display: block;
  width: 76px;
  height: 3px;
  margin-top: 1.15rem;
  background: linear-gradient(90deg, var(--accent), rgba(79, 224, 200, 0));
}

.page-disclaimer .usage-hero__lead {
  margin: 1.35rem 0 0;
  max-width: 60ch;
  font-size: 1.0625rem;
  line-height: 1.85;
  color: var(--text-soft);
}

.page-disclaimer .usage-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: .55rem 1.9rem;
  margin: 2.1rem 0 0;
  padding: 1.05rem 0 0;
  list-style: none;
  border-top: 1px solid var(--line-soft);
  font-size: var(--fs-caption);
  color: var(--text-dim);
}

.page-disclaimer .usage-hero__meta li {
  display: flex;
  align-items: baseline;
  gap: .5rem;
}

.page-disclaimer .usage-hero__meta .mono {
  font-family: var(--font-mono);
  font-size: .9375rem;
  font-weight: 600;
  letter-spacing: .05em;
  color: var(--accent);
}

/* ---------- 主体骨架 ---------- */
.page-disclaimer .usage-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2.5rem;
  padding-block: 2.75rem 4.5rem;
}

/* ---------- 迷你目录 ---------- */
.page-disclaimer .usage-toc {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-m);
  background: rgba(20, 23, 25, .74);
  padding: 1.1rem 1rem 1.15rem;
}

.page-disclaimer .usage-toc__title {
  margin: 0 0 .9rem;
  font-family: var(--font-mono);
  font-size: var(--fs-caption);
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--accent-2);
}

.page-disclaimer .usage-toc__list {
  display: grid;
  gap: .15rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .usage-toc__link {
  display: flex;
  gap: .7rem;
  align-items: baseline;
  padding: .5rem .65rem;
  border-left: 2px solid transparent;
  border-radius: var(--radius-s);
  color: var(--text-soft);
  font-size: .9375rem;
  line-height: 1.5;
  text-decoration: none;
  transition: color .25s var(--ease), background-color .25s var(--ease), border-color .25s var(--ease);
}

.page-disclaimer .usage-toc__link:hover {
  color: var(--text);
  background: rgba(79, 224, 200, .07);
}

.page-disclaimer .usage-toc__link[aria-current="true"] {
  color: var(--text);
  border-left-color: var(--accent-2);
  background: rgba(230, 180, 80, .08);
}

.page-disclaimer .usage-toc__num {
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .06em;
  color: var(--accent);
}

.page-disclaimer .usage-toc__note {
  margin: 1rem 0 0;
  padding-top: .9rem;
  border-top: 1px solid var(--line-soft);
  font-size: var(--fs-caption);
  line-height: 1.7;
  color: var(--text-dim);
}

/* ---------- 章节 ---------- */
.page-disclaimer .usage-section {
  position: relative;
  padding-top: 1.6rem;
  border-top: 1px solid var(--line);
}

.page-disclaimer .usage-section + .usage-section {
  margin-top: 2.75rem;
}

.page-disclaimer .usage-main > .usage-section:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-disclaimer .usage-main > .usage-section:first-child::before {
  display: none;
}

.page-disclaimer .usage-section::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 92px;
  height: 1px;
  background: linear-gradient(90deg, var(--accent-2), rgba(230, 180, 80, 0));
}

.page-disclaimer .usage-section__head {
  display: flex;
  align-items: baseline;
  gap: .9rem;
  margin-bottom: 1rem;
}

.page-disclaimer .usage-section__num {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: .04em;
  color: rgba(79, 224, 200, .55);
}

.page-disclaimer .usage-section__title {
  margin: 0;
  font-size: clamp(1.375rem, 2.6vw, 1.75rem);
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--text);
}

.page-disclaimer .usage-section__lead {
  max-width: 72ch;
  margin: 0;
  color: var(--text-soft);
  line-height: 1.85;
}

.page-disclaimer .usage-points {
  display: grid;
  gap: .85rem;
  max-width: 78ch;
  margin: 1.15rem 0 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .usage-points > li {
  position: relative;
  padding-left: 1.5rem;
  color: var(--text-soft);
  line-height: 1.8;
}

.page-disclaimer .usage-points > li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .74em;
  width: 9px;
  height: 9px;
  border: 1px solid var(--accent);
  transform: rotate(45deg);
}

.page-disclaimer .usage-points a,
.page-disclaimer .usage-section__lead a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(79, 224, 200, .38);
  transition: border-color .25s var(--ease), color .25s var(--ease);
}

.page-disclaimer .usage-points a:hover,
.page-disclaimer .usage-section__lead a:hover {
  border-bottom-color: var(--accent);
}

.page-disclaimer .usage-note {
  max-width: 78ch;
  margin: 1.35rem 0 0;
  padding: .85rem 1rem .85rem 1.15rem;
  border-left: 2px solid var(--accent-2);
  border-radius: 0 var(--radius-s) var(--radius-s) 0;
  background: linear-gradient(90deg, rgba(230, 180, 80, .1), rgba(230, 180, 80, 0));
  color: var(--text-soft);
  font-size: .9375rem;
  line-height: 1.8;
}

.page-disclaimer .usage-note a {
  color: var(--accent-2);
  text-decoration: none;
  border-bottom: 1px solid rgba(230, 180, 80, .45);
  transition: border-color .25s var(--ease);
}

.page-disclaimer .usage-note a:hover {
  border-bottom-color: var(--accent-2);
}

/* ---------- 更新节奏表 ---------- */
.page-disclaimer .usage-table-wrap {
  margin-top: 1.5rem;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-m);
  background: rgba(20, 23, 25, .6);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-disclaimer .usage-table-wrap .data-table {
  min-width: 500px;
}

.page-disclaimer .usage-table-wrap .data-table caption {
  padding: 1rem 1.1rem 0;
  text-align: left;
  font-family: var(--font-mono);
  font-size: var(--fs-caption);
  letter-spacing: .1em;
  color: var(--text-dim);
}

/* ---------- 联系方式 ---------- */
.page-disclaimer .usage-contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.1rem;
  margin-top: 1.6rem;
  padding: 1.25rem 1.15rem;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-m);
  background: linear-gradient(160deg, rgba(36, 74, 61, .3), rgba(20, 23, 25, .68));
}

.page-disclaimer .usage-contact__item {
  display: grid;
  gap: .35rem;
  min-width: 0;
}

.page-disclaimer .usage-contact__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.page-disclaimer .usage-contact__value {
  margin: 0;
  color: var(--text);
  font-size: .9375rem;
  line-height: 1.7;
  overflow-wrap: anywhere;
}

.page-disclaimer .usage-contact__hint {
  max-width: 78ch;
  margin: 1.1rem 0 0;
  font-size: var(--fs-caption);
  line-height: 1.75;
  color: var(--text-dim);
}

.page-disclaimer .usage-icp {
  margin: .85rem 0 0;
  font-family: var(--font-mono);
  font-size: var(--fs-caption);
  letter-spacing: .05em;
  color: var(--text-dim);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-disclaimer .usage-contact {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.5rem;
    padding: 1.6rem 1.5rem;
  }
}

@media (min-width: 960px) {
  .page-disclaimer .usage-layout {
    grid-template-columns: var(--dp-toc) minmax(0, 1fr);
    gap: var(--dp-gap);
    padding-block: 3.5rem 6rem;
    align-items: start;
  }

  .page-disclaimer .usage-toc {
    position: sticky;
    top: calc(var(--header-h) + 1.75rem);
  }

  .page-disclaimer .usage-hero {
    padding-top: calc(var(--header-h) + 4.25rem);
    padding-bottom: 4rem;
  }
}

@media (max-width: 479px) {
  .page-disclaimer .usage-hero__meta {
    flex-direction: column;
    gap: .55rem;
  }

  .page-disclaimer .usage-section__head {
    flex-direction: column;
    gap: .4rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .usage-toc__link,
  .page-disclaimer .usage-points a,
  .page-disclaimer .usage-note a,
  .page-disclaimer .usage-hero .breadcrumb a {
    transition: none;
  }
}