.page-disclaimer {
  --usage-index-w: 252px;
  --usage-col-gap: 64px;
  --usage-cut: 36px;
}

/* ============ 页首 ============ */
.page-disclaimer .usage-hero {
  padding: 24px 0 8px;
  position: relative;
  overflow: hidden;
}

.page-disclaimer .usage-hero::before {
  content: "";
  position: absolute;
  inset: -120px -10% auto auto;
  width: 520px;
  height: 520px;
  background: radial-gradient(circle at 30% 30%, rgba(27, 92, 255, .18), rgba(122, 91, 255, .10) 45%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.page-disclaimer .usage-hero .shell {
  position: relative;
  z-index: 1;
}

.page-disclaimer .usage-hero__eyebrow {
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--blue);
  margin: 22px 0 14px;
}

.page-disclaimer .usage-hero__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.5rem, 9vw, 5.25rem);
  line-height: 1.04;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin: 0 0 20px;
}

.page-disclaimer .usage-hero__lede {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--gray);
  max-width: 60ch;
  margin: 0;
}

.page-disclaimer .usage-hero__strip {
  height: 4px;
  width: 160px;
  margin-top: 30px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--blue), var(--violet) 48%, var(--orange));
}

.page-disclaimer .usage-hero__mediawrap {
  position: relative;
  z-index: 1;
  margin-top: 40px;
}

.page-disclaimer .usage-hero__figure {
  margin: 0;
  overflow: hidden;
  background: linear-gradient(118deg, var(--blue-tint) 0%, #F4F1FF 52%, var(--warm) 100%);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--usage-cut)), calc(100% - var(--usage-cut)) 100%, 0 100%);
}

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

/* ============ 主体两栏 ============ */
.page-disclaimer .usage-body {
  padding: 48px 0 8px;
}

.page-disclaimer .usage-body__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
  align-items: start;
}

/* 索引 */
.page-disclaimer .usage-index__label {
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--gray);
  margin: 0 0 14px;
}

.page-disclaimer .usage-index__list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
}

.page-disclaimer .usage-index__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper);
  color: var(--ink);
  font-size: 14px;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: transform .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease);
}

.page-disclaimer .usage-index__no {
  font-family: var(--font-num);
  font-size: 12px;
  font-weight: 700;
  color: var(--orange);
}

.page-disclaimer .usage-index__link:hover,
.page-disclaimer .usage-index__link:focus-visible {
  transform: translateY(-2px);
  border-color: var(--blue);
  color: var(--blue);
}

/* 条款 */
.page-disclaimer .usage-terms {
  min-width: 0;
}

.page-disclaimer .term {
  padding: 26px 0 28px;
  border-top: 1px solid var(--line);
}

.page-disclaimer .term:first-child {
  border-top: none;
  padding-top: 0;
}

.page-disclaimer .term__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 14px;
}

.page-disclaimer .term__num {
  flex: none;
  font-family: var(--font-num);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--orange);
}

.page-disclaimer .term__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.2rem, 4.4vw, 1.6rem);
  line-height: 1.4;
  color: var(--ink);
  margin: 0;
}

.page-disclaimer .term__conclusion {
  font-size: 1.0625rem;
  font-weight: 500;
  line-height: 1.7;
  color: var(--ink);
  max-width: 64ch;
  margin: 0 0 10px;
}

.page-disclaimer .term__note {
  font-size: 16px;
  line-height: 1.85;
  color: var(--gray);
  max-width: 68ch;
  margin: 0;
}

.page-disclaimer .term__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 20px 0 0;
}

/* ============ 收尾 ============ */
.page-disclaimer .usage-outro {
  padding: 20px 0 72px;
}

.page-disclaimer .usage-outro__panel {
  position: relative;
  background: var(--warm);
  border-left: 4px solid var(--orange);
  border-radius: 0 14px 14px 0;
  padding: 30px 22px 26px;
}

.page-disclaimer .usage-outro__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.3rem, 4.6vw, 1.75rem);
  line-height: 1.35;
  color: var(--ink);
  margin: 0 0 10px;
}

.page-disclaimer .usage-outro__lede {
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink);
  opacity: .78;
  max-width: 62ch;
  margin: 0 0 22px;
}

.page-disclaimer .usage-outro__contacts {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-disclaimer .usage-outro__contact {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(11, 18, 32, .08);
}

.page-disclaimer .usage-outro__k {
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--gray);
}

.page-disclaimer .usage-outro__v {
  font-size: 16px;
  font-weight: 500;
  color: var(--ink);
  word-break: break-word;
}

.page-disclaimer .usage-outro__legal {
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--gray);
  margin: 0 0 12px;
}

.page-disclaimer .usage-outro__foot {
  font-size: 15px;
  line-height: 1.7;
  color: var(--gray);
  margin: 0;
}

.page-disclaimer .usage-outro__foot a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-disclaimer .usage-outro__foot a:hover,
.page-disclaimer .usage-outro__foot a:focus-visible {
  color: var(--orange);
}

/* ============ 桌面端 ============ */
@media (min-width: 1000px) {
  .page-disclaimer .usage-hero {
    padding-top: 32px;
  }

  .page-disclaimer .usage-hero__mediawrap {
    margin-top: 52px;
  }

  .page-disclaimer .usage-body {
    padding-top: 64px;
  }

  .page-disclaimer .usage-body__grid {
    grid-template-columns: var(--usage-index-w) minmax(0, 1fr);
    gap: var(--usage-col-gap);
  }

  .page-disclaimer .usage-index {
    position: sticky;
    top: 32px;
  }

  .page-disclaimer .usage-index__list {
    display: block;
    border-left: 1px solid var(--line);
    padding-left: 0;
  }

  .page-disclaimer .usage-index__list li + li {
    margin-top: 2px;
  }

  .page-disclaimer .usage-index__link {
    position: relative;
    display: flex;
    width: 100%;
    padding: 8px 8px 8px 16px;
    border: none;
    border-radius: 0;
    background: none;
    font-size: 15px;
    color: var(--gray);
    white-space: normal;
  }

  .page-disclaimer .usage-index__link::before {
    content: "";
    position: absolute;
    left: -1px;
    top: 50%;
    width: 3px;
    height: 0;
    background: var(--blue);
    transform: translateY(-50%);
    transition: height .22s var(--ease);
  }

  .page-disclaimer .usage-index__link:hover,
  .page-disclaimer .usage-index__link:focus-visible {
    transform: none;
    color: var(--ink);
  }

  .page-disclaimer .usage-index__link:hover::before,
  .page-disclaimer .usage-index__link:focus-visible::before {
    height: 20px;
  }

  .page-disclaimer .term {
    padding: 36px 0 38px;
  }

  .page-disclaimer .usage-outro {
    padding-bottom: 96px;
  }

  .page-disclaimer .usage-outro__panel {
    padding: 40px 48px 34px;
  }

  .page-disclaimer .usage-outro__contacts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px 32px;
  }
}

/* ============ 窄屏收窄 ============ */
@media (max-width: 560px) {
  .page-disclaimer .usage-hero__title {
    font-size: clamp(2.25rem, 13vw, 3rem);
  }

  .page-disclaimer .term {
    padding: 22px 0 24px;
  }

  .page-disclaimer .term__head {
    gap: 10px;
  }

  .page-disclaimer .term__actions .btn {
    width: 100%;
    justify-content: center;
    text-align: center;
  }

  .page-disclaimer .usage-outro__panel {
    padding: 24px 18px 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .usage-index__link,
  .page-disclaimer .usage-index__link::before {
    transition: none;
  }
}