.page-disclaimer {
  --clause-num-w: 88px;
  --clause-rule: rgba(124, 139, 181, 0.22);
  position: relative;
  isolation: isolate;
}

.page-disclaimer::before {
  content: "";
  position: absolute;
  inset: -6% -12% auto -12%;
  height: 620px;
  z-index: -1;
  background:
    radial-gradient(560px 340px at 18% 6%, rgba(18, 224, 200, 0.14), transparent 68%),
    radial-gradient(520px 320px at 82% 12%, rgba(245, 194, 67, 0.09), transparent 70%),
    repeating-linear-gradient(115deg, rgba(22, 34, 74, 0.55) 0 1px, transparent 1px 26px);
  transform: rotate(-2.5deg);
  transform-origin: top center;
  pointer-events: none;
}

/* 面包屑 */
.page-disclaimer .breadcrumb {
  padding-top: clamp(18px, 3vh, 30px);
}

.page-disclaimer .crumb-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0;
  padding: 0;
  font-size: 14px;
  color: var(--dust);
}

.page-disclaimer .crumb-list li + li::before {
  content: "/";
  margin-right: 10px;
  color: rgba(124, 139, 181, 0.5);
}

.page-disclaimer .crumb-list a {
  color: var(--fog);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

.page-disclaimer .crumb-list a:hover,
.page-disclaimer .crumb-list a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--line-cyan);
}

.page-disclaimer .crumb-list [aria-current="page"] {
  color: var(--pale);
}

/* 首屏 */
.page-disclaimer .usage-hero {
  display: grid;
  gap: 26px;
  padding-top: clamp(26px, 5vh, 60px);
  padding-bottom: clamp(30px, 6vh, 62px);
}

.page-disclaimer .usage-hero__title {
  margin: 10px 0 18px;
  color: #fff;
  letter-spacing: -0.02em;
}

.page-disclaimer .usage-hero .lede {
  max-width: 46ch;
  color: var(--fog);
}

.page-disclaimer .usage-hero__aside {
  padding: 22px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: linear-gradient(150deg, rgba(14, 23, 52, 0.94), rgba(7, 12, 31, 0.86));
  box-shadow: inset 0 1px 0 rgba(18, 224, 200, 0.12);
}

.page-disclaimer .usage-hero__meta {
  margin: 14px 0 0;
  font-size: 13px;
  color: var(--cyan);
  letter-spacing: 0.02em;
}

/* 通栏首图 */
.page-disclaimer .usage-banner {
  position: relative;
  margin: 0 auto clamp(30px, 6vh, 56px);
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--line);
}

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

.page-disclaimer .usage-banner::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(7, 12, 31, 0) 42%, rgba(7, 12, 31, 0.78) 100%);
  pointer-events: none;
}

.page-disclaimer .usage-banner .media__caption {
  position: relative;
  z-index: 2;
  margin: -46px 0 0;
  padding: 0 clamp(18px, 3vw, 30px) 18px;
  color: var(--dust);
  font-size: 14px;
}

/* 条款速览 */
.page-disclaimer .clause-index {
  max-width: 100%;
  margin: 0 auto clamp(34px, 6vh, 64px);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: linear-gradient(160deg, rgba(30, 42, 82, 0.72), rgba(14, 23, 52, 0.9));
  padding: 0 clamp(18px, 3vw, 26px);
}

.page-disclaimer .clause-index[open] {
  padding-bottom: 20px;
}

.page-disclaimer .clause-index summary {
  display: flex;
  align-items: center;
  gap: 14px;
  cursor: pointer;
  list-style: none;
  padding: 18px 0;
  color: var(--pale);
}

.page-disclaimer .clause-index summary::-webkit-details-marker {
  display: none;
}

.page-disclaimer .clause-index__label {
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-disclaimer .clause-index__count {
  font-size: 13px;
  color: var(--gold);
  padding: 3px 10px;
  border: 1px solid var(--line-gold);
  border-radius: var(--radius-pill);
}

.page-disclaimer .clause-index__hint {
  margin-left: auto;
  font-size: 13px;
  color: var(--dust);
}

.page-disclaimer .clause-index[open] .clause-index__hint {
  color: var(--cyan);
}

.page-disclaimer .clause-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-disclaimer .clause-index__list a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-soft);
  color: var(--fog);
  text-decoration: none;
  font-size: 15px;
  transition: background var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}

.page-disclaimer .clause-index__list a .mono {
  font-size: 14px;
  color: var(--cyan);
}

.page-disclaimer .clause-index__list a:hover,
.page-disclaimer .clause-index__list a:focus-visible {
  background: rgba(18, 224, 200, 0.1);
  color: #fff;
}

/* 条款正文 */
.page-disclaimer .section-head__copy {
  margin-top: 14px;
  max-width: 60ch;
  color: var(--dust);
}

.page-disclaimer .clause-list {
  list-style: none;
  margin: clamp(26px, 5vh, 48px) 0 0;
  padding: 0;
}

.page-disclaimer .clause {
  display: grid;
  gap: 12px;
  padding: clamp(24px, 4vw, 36px) 0 clamp(28px, 4.6vw, 44px);
  border-top: 1px solid var(--clause-rule);
  scroll-margin-top: 120px;
}

.page-disclaimer .clause:last-child {
  border-bottom: 1px solid var(--clause-rule);
}

.page-disclaimer .clause__num {
  position: relative;
  display: inline-block;
  font-size: var(--fs-2);
  line-height: 1;
  letter-spacing: 0.06em;
  color: var(--cyan);
  padding-top: 4px;
}

.page-disclaimer .clause__num::after {
  content: attr(data-label);
  position: absolute;
  left: 0;
  top: calc(100% + 10px);
  white-space: nowrap;
  font-family: var(--font-body);
  font-size: 13px;
  letter-spacing: 0;
  color: var(--pale);
  background: var(--ink-600);
  border: 1px solid var(--line-cyan);
  border-radius: var(--radius-pill);
  padding: 6px 12px;
  opacity: 0;
  transform: translateY(-4px);
  pointer-events: none;
  transition: opacity var(--t-fast) var(--ease), transform var(--t-fast) var(--ease);
  z-index: 4;
}

.page-disclaimer .clause:hover .clause__num::after {
  opacity: 1;
  transform: translateY(0);
}

.page-disclaimer .clause__body {
  min-width: 0;
}

.page-disclaimer .clause__title {
  margin: 0 0 12px;
  font-size: var(--fs-2);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: #fff;
}

.page-disclaimer .clause__body p {
  margin: 0 0 14px;
  max-width: 68ch;
  color: var(--fog);
}

.page-disclaimer .clause__points {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
  display: grid;
  gap: 10px;
  max-width: 68ch;
}

.page-disclaimer .clause__points > li {
  position: relative;
  padding-left: 20px;
  color: var(--fog);
  line-height: 1.8;
}

.page-disclaimer .clause__points > li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.78em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(18, 224, 200, 0.14);
}

.page-disclaimer .clause__link {
  margin: 0;
  font-size: 15px;
  color: var(--dust);
}

.page-disclaimer .clause__link a {
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid var(--line-gold);
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

.page-disclaimer .clause__link a:hover,
.page-disclaimer .clause__link a:focus-visible {
  color: var(--pale);
  border-bottom-color: var(--cyan);
}

.page-disclaimer .rule-mark {
  display: inline-block;
  padding: 1px 9px;
  border-left: 2px solid var(--cyan);
  border-radius: 4px 12px 12px 4px;
  background: linear-gradient(90deg, rgba(18, 224, 200, 0.16), rgba(18, 224, 200, 0.03));
  color: var(--pale);
  font-weight: 600;
}

/* 联系信息条目 */
.page-disclaimer .clause__points--contact {
  gap: 8px;
  margin-bottom: 18px;
}

.page-disclaimer .clause__points--contact > li {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-soft);
  background: rgba(14, 23, 52, 0.72);
}

.page-disclaimer .clause__points--contact > li::before {
  display: none;
}

.page-disclaimer .contact-label {
  min-width: 5em;
  font-size: 14px;
  color: var(--dust);
}

.page-disclaimer .contact-value {
  color: var(--pale);
  word-break: break-all;
}

.page-disclaimer .clause__points--contact .copy-btn {
  margin-left: auto;
  padding: 6px 14px;
  font-size: 13px;
  color: var(--fog);
  background: transparent;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}

.page-disclaimer .clause__points--contact .copy-btn:hover,
.page-disclaimer .clause__points--contact .copy-btn:focus-visible {
  color: var(--pale);
  border-color: var(--line-cyan);
  background: rgba(18, 224, 200, 0.1);
}

.page-disclaimer .clause__points--contact .copy-btn[data-copied] {
  color: var(--ink-900);
  background: var(--gold);
  border-color: var(--gold);
}

/* 页尾收束 */
.page-disclaimer .closing__inner {
  display: grid;
  gap: 30px;
  padding-top: clamp(34px, 6vh, 60px);
  padding-bottom: clamp(44px, 8vh, 88px);
}

.page-disclaimer .closing__text h2 {
  margin: 10px 0 16px;
  color: #fff;
}

.page-disclaimer .closing__text .copy {
  max-width: 56ch;
  color: var(--fog);
}

.page-disclaimer .closing__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 24px;
}

.page-disclaimer .closing__actions .btn {
  text-decoration: none;
}

.page-disclaimer .closing__fiber {
  align-self: end;
}

.page-disclaimer .fiber-close svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-disclaimer .closing__note {
  margin: 6px 0 0;
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--dust);
}

/* 平板及以上 */
@media (min-width: 901px) {
  .page-disclaimer .usage-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
    column-gap: clamp(32px, 5vw, 76px);
  }

  .page-disclaimer .usage-hero__aside {
    transform: translateY(28px);
  }

  .page-disclaimer .clause-index {
    margin-left: auto;
    margin-right: 0;
    max-width: 430px;
  }

  .page-disclaimer .clause {
    grid-template-columns: var(--clause-num-w) minmax(0, 1fr);
    column-gap: clamp(24px, 4vw, 60px);
  }

  .page-disclaimer .clause:nth-child(even) {
    padding-left: clamp(0px, 3vw, 48px);
  }

  .page-disclaimer .clause:nth-child(odd) .clause__body {
    padding-right: clamp(0px, 4vw, 64px);
  }

  .page-disclaimer .closing__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
    column-gap: clamp(32px, 5vw, 72px);
  }
}

@media (max-width: 900px) {
  .page-disclaimer .clause__num::after {
    display: none;
  }

  .page-disclaimer .clause__num {
    font-size: var(--fs-1);
    letter-spacing: 0.12em;
  }

  .page-disclaimer .clause__points--contact > li {
    flex-direction: column;
    align-items: flex-start;
  }

  .page-disclaimer .clause__points--contact .copy-btn {
    margin-left: 0;
  }
}

@media (max-width: 520px) {
  .page-disclaimer .usage-hero__aside {
    padding: 18px 18px;
  }

  .page-disclaimer .usage-banner .media__caption {
    margin-top: -30px;
  }

  .page-disclaimer .closing__actions .btn {
    width: 100%;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .clause__num::after,
  .page-disclaimer .clause-index__list a,
  .page-disclaimer .clause__points--contact .copy-btn {
    transition: none;
  }
}