/* ===== 使用规范页（page-disclaimer） ===== */

.page-disclaimer {
  --u-line: rgba(111, 143, 133, .22);
  --u-line-strong: rgba(198, 255, 61, .34);
  position: relative;
}

/* --- 面包屑 --- */
.page-disclaimer .breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-top: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--c-steel);
}

.page-disclaimer .breadcrumbs a {
  color: var(--c-mist);
  text-decoration: none;
  transition: color .2s var(--ease);
}

.page-disclaimer .breadcrumbs a:hover {
  color: var(--c-lime);
}

/* --- 首屏 --- */
.page-disclaimer .usage-hero {
  position: relative;
  padding: clamp(28px, 5vw, 56px) 0 clamp(38px, 6vw, 76px);
  overflow: hidden;
}

.page-disclaimer .usage-hero::before {
  content: "";
  position: absolute;
  top: -34%;
  right: -14%;
  width: min(760px, 92vw);
  height: min(760px, 92vw);
  background: radial-gradient(circle, rgba(198, 255, 61, .10), rgba(198, 255, 61, 0) 62%);
  pointer-events: none;
}

.page-disclaimer .usage-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, rgba(198, 255, 61, .55), rgba(198, 255, 61, .06) 58%, transparent);
}

.page-disclaimer .hero-split {
  position: relative;
  display: grid;
  gap: 32px;
}

.page-disclaimer .hero-copy .eyebrow {
  color: var(--c-lime);
}

.page-disclaimer .hero-copy .display-1 {
  margin: 16px 0 0;
  font-size: clamp(42px, 10vw, 92px);
  line-height: .96;
  letter-spacing: -.02em;
  color: var(--c-white);
}

.page-disclaimer .hero-copy .lede {
  margin: 22px 0 0;
  max-width: 48ch;
  color: var(--c-mist);
  font-size: clamp(15px, 1.5vw, 18px);
  line-height: 1.85;
}

.page-disclaimer .hero-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
}

.page-disclaimer .hero-tags .pill {
  padding: 6px 14px;
  font-size: 12px;
  letter-spacing: .08em;
}

.page-disclaimer .usage-figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--c-matrix);
}

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

/* --- 正文骨架 --- */
.page-disclaimer .usage-body {
  padding: clamp(36px, 5.5vw, 72px) 0 clamp(48px, 7vw, 96px);
}

.page-disclaimer .usage-grid {
  display: grid;
  gap: 28px;
}

.page-disclaimer .usage-rail {
  display: none;
}

.page-disclaimer .usage-rail-title {
  margin: 0 0 14px;
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--c-steel);
  text-transform: uppercase;
}

.page-disclaimer .usage-rail-nav {
  display: grid;
  gap: 4px;
}

.page-disclaimer .rail-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-md);
  color: var(--c-mist);
  font-size: 14px;
  line-height: 1.4;
  text-decoration: none;
  transition: color .2s var(--ease), background .2s var(--ease);
}

.page-disclaimer .rail-link .rail-num {
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--c-steel);
  transition: color .2s var(--ease);
}

.page-disclaimer .rail-link:hover {
  color: var(--c-white);
  background: rgba(198, 255, 61, .07);
}

.page-disclaimer .rail-link.is-active {
  color: var(--c-night);
  background: var(--c-lime);
  font-weight: 600;
}

.page-disclaimer .rail-link.is-active .rail-num {
  color: rgba(11, 31, 23, .58);
}

/* --- 横向页签 --- */
.page-disclaimer .usage-tabs {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 0 0 14px;
  border-bottom: 1px solid var(--u-line);
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

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

.page-disclaimer .usage-tab {
  flex: 0 0 auto;
  padding: 8px 16px;
  border: 1px solid var(--u-line);
  border-radius: var(--radius-pill);
  color: var(--c-mist);
  font-size: 13px;
  letter-spacing: .04em;
  text-decoration: none;
  transition: border-color .2s var(--ease), color .2s var(--ease), background .2s var(--ease);
}

.page-disclaimer .usage-tab:hover,
.page-disclaimer .usage-tab.is-active {
  border-color: var(--u-line-strong);
  color: var(--c-lime);
  background: rgba(198, 255, 61, .07);
}

/* --- 条款 --- */
.page-disclaimer .usage-clause {
  padding: clamp(30px, 4.5vw, 52px) 0;
  border-bottom: 1px solid var(--u-line);
  scroll-margin-top: calc(var(--header-h) + 30px);
}

.page-disclaimer .usage-clause:last-of-type {
  border-bottom: 0;
}

.page-disclaimer .clause-head {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 18px;
}

.page-disclaimer .clause-num {
  font-weight: 700;
  font-size: clamp(38px, 8vw, 72px);
  line-height: .86;
  letter-spacing: -.04em;
  color: rgba(198, 255, 61, .24);
}

.page-disclaimer .clause-head h2 {
  margin: 0;
  font-size: clamp(21px, 3vw, 32px);
  line-height: 1.25;
  letter-spacing: -.01em;
  color: var(--c-white);
}

.page-disclaimer .usage-clause p {
  max-width: 68ch;
  margin: 0;
  color: var(--c-mist);
  font-size: 16px;
  line-height: 1.85;
}

.page-disclaimer .clause-list {
  list-style: none;
  display: grid;
  gap: 12px;
  margin: 20px 0 0;
  padding: 0;
}

.page-disclaimer .clause-list li {
  position: relative;
  padding-left: 22px;
  color: var(--c-mist);
  font-size: 15px;
  line-height: 1.8;
}

.page-disclaimer .clause-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .7em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-lime);
  opacity: .8;
}

/* --- 联系卡片 --- */
.page-disclaimer .usage-contact {
  margin-top: clamp(28px, 4vw, 44px);
  padding: clamp(22px, 3.4vw, 34px);
  border: 1px solid var(--u-line-strong);
  border-radius: var(--radius-lg);
  background: var(--c-matrix);
}

.page-disclaimer .usage-contact-label {
  margin: 0;
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--c-lime);
}

.page-disclaimer .usage-contact-value {
  margin: 12px 0 0;
  font-size: clamp(15px, 2.4vw, 22px);
  letter-spacing: .01em;
  color: var(--c-white);
  word-break: break-all;
}

.page-disclaimer .usage-contact-hint {
  margin: 14px 0 0;
  color: var(--c-mist);
  font-size: 14px;
  line-height: 1.8;
}

.page-disclaimer .usage-contact-hint a {
  color: var(--c-lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(198, 255, 61, .38);
}

.page-disclaimer .usage-contact-hint a:hover {
  border-bottom-color: var(--c-lime);
}

/* --- 结尾指引 --- */
.page-disclaimer .usage-outro {
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding-top: 22px;
  border-top: 1px dashed var(--u-line);
  color: var(--c-mist);
  font-size: 14px;
  line-height: 1.85;
}

.page-disclaimer .usage-outro a {
  color: var(--c-white);
  text-decoration: none;
  border-bottom: 1px solid rgba(198, 255, 61, .38);
}

.page-disclaimer .usage-outro a:hover {
  color: var(--c-lime);
  border-bottom-color: var(--c-lime);
}

/* --- 响应式 --- */
@media (min-width: 720px) {
  .page-disclaimer .clause-head {
    flex-direction: row;
    align-items: flex-end;
    gap: 18px;
  }

  .page-disclaimer .clause-head h2 {
    margin-bottom: 6px;
  }

  .page-disclaimer .clause-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px 28px;
  }
}

@media (min-width: 900px) {
  .page-disclaimer .hero-split {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: center;
    gap: 48px;
  }

  .page-disclaimer .usage-figure {
    aspect-ratio: 3 / 2;
  }

  .page-disclaimer .usage-figure img {
    height: 100%;
  }
}

@media (min-width: 1024px) {
  .page-disclaimer .usage-grid {
    grid-template-columns: 232px minmax(0, 1fr);
    gap: 52px;
  }

  .page-disclaimer .usage-rail {
    display: block;
    align-self: start;
    position: sticky;
    top: calc(var(--header-h) + 26px);
    padding-left: 18px;
    border-left: 2px solid var(--u-line-strong);
  }

  .page-disclaimer .clause-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 400px) {
  .page-disclaimer .usage-contact-value {
    font-size: 14px;
  }

  .page-disclaimer .usage-tab {
    padding: 7px 13px;
    font-size: 12px;
  }
}