.page-disclaimer {
  --d-index-w: 200px;
  --d-banner-h: clamp(150px, 24vw, 300px);
  background-color: var(--paper);
  color: var(--black);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
}

/* ---------- 首屏 ---------- */
.page-disclaimer__hero {
  position: relative;
  background-color: var(--paper);
}

.page-disclaimer__hero-top {
  padding-top: clamp(18px, 3.6vw, 34px);
}

.page-disclaimer__banner {
  position: relative;
  margin: clamp(18px, 3.2vw, 32px) 0 0;
  background-color: var(--ink-deep);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}

.page-disclaimer__banner img {
  display: block;
  width: 100%;
  height: var(--d-banner-h);
  object-fit: cover;
  object-position: center 42%;
  opacity: 0.9;
  filter: saturate(0.7) contrast(1.08);
}

.page-disclaimer__banner::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    12deg,
    rgba(41, 211, 232, 0.09) 0 1px,
    transparent 1px 15px
  );
}

.page-disclaimer__hero-copy {
  padding-top: clamp(26px, 4.2vw, 46px);
  padding-bottom: clamp(30px, 5vw, 54px);
}

.page-disclaimer__eyebrow {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gray);
}

.page-disclaimer__title {
  margin: 0 0 0.55em;
  max-width: 16em;
  font-size: clamp(30px, 5.4vw, 52px);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -0.012em;
}

.page-disclaimer__lede {
  margin: 0;
  max-width: 34em;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.78;
  color: var(--black);
}

/* ---------- 主体与索引 ---------- */
.page-disclaimer__body {
  padding-top: clamp(34px, 6vw, 74px);
  padding-bottom: clamp(46px, 8vw, 92px);
  background-color: var(--paper);
}

.page-disclaimer__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
}

.page-disclaimer__index {
  min-width: 0;
}

.page-disclaimer__index-title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gray);
}

.page-disclaimer__index-list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 8px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-disclaimer__index-list > li {
  flex: 0 0 auto;
}

.page-disclaimer__index-link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 12px;
  border: 1px solid var(--line);
  border-left: 3px solid transparent;
  color: var(--black);
  font-size: 13px;
  line-height: 1.5;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color var(--step) var(--ease), border-color var(--step) var(--ease),
    color var(--step) var(--ease);
}

.page-disclaimer__index-link .u-mono {
  font-size: 11px;
  color: var(--gray);
  transition: color var(--step) var(--ease);
}

.page-disclaimer__index-link:hover,
.page-disclaimer__index-link:focus-visible {
  background-color: var(--orange-soft);
  border-left-color: var(--orange);
}

.page-disclaimer__index-link:hover .u-mono,
.page-disclaimer__index-link:focus-visible .u-mono {
  color: var(--ink);
}

.page-disclaimer__index-link:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 2px;
}

/* ---------- 条款折叠 ---------- */
.page-disclaimer__content {
  min-width: 0;
}

.page-disclaimer__clause {
  border-top: 1px solid var(--line);
}

.page-disclaimer__clause:last-of-type {
  border-bottom: 1px solid var(--line);
}

.page-disclaimer__summary {
  display: flex;
  align-items: baseline;
  gap: clamp(10px, 2vw, 18px);
  padding: 20px 0;
  cursor: pointer;
  list-style: none;
  transition: color var(--step) var(--ease);
}

.page-disclaimer__summary::-webkit-details-marker {
  display: none;
}

.page-disclaimer__summary:hover,
.page-disclaimer__summary:focus-visible {
  color: var(--orange);
}

.page-disclaimer__summary:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 2px;
}

.page-disclaimer__num {
  flex: 0 0 26px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gray);
}

.page-disclaimer__clause-title {
  margin: 0;
  font-size: clamp(19px, 2.5vw, 24px);
  font-weight: 800;
  line-height: 1.32;
  letter-spacing: -0.005em;
}

.page-disclaimer__summary::after {
  content: "＋";
  margin-left: auto;
  align-self: center;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1;
  color: var(--orange);
}

.page-disclaimer__clause[open] > .page-disclaimer__summary::after {
  content: "－";
}

.page-disclaimer__clause-body {
  border-left: 2px solid var(--orange-soft);
  padding: 0 0 clamp(22px, 3.4vw, 34px) clamp(14px, 2.2vw, 22px);
  margin-bottom: clamp(4px, 1vw, 10px);
}

.page-disclaimer__clause-body > *:first-child {
  margin-top: 0;
}

.page-disclaimer__clause-body > *:last-child {
  margin-bottom: 0;
}

.page-disclaimer__clause-body strong {
  font-weight: 800;
  color: var(--ink);
}

.page-disclaimer__clause-body a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--orange);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.page-disclaimer__clause-body a:hover,
.page-disclaimer__clause-body a:focus-visible {
  background-color: var(--orange-soft);
}

.page-disclaimer__clause--annex .page-disclaimer__summary {
  padding-top: 16px;
  padding-bottom: 16px;
}

.page-disclaimer__clause--annex .page-disclaimer__clause-title {
  font-size: clamp(16px, 2vw, 19px);
  font-weight: 700;
}

.page-disclaimer__glossary {
  margin: 0;
}

.page-disclaimer__glossary dt {
  margin-top: 1em;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.page-disclaimer__glossary dt:first-child {
  margin-top: 0;
}

.page-disclaimer__glossary dd {
  margin: 0.35em 0 0;
}

/* ---------- 中部墨绿分隔带 ---------- */
.page-disclaimer__keystone {
  margin: clamp(22px, 3.6vw, 38px) 0;
  padding: clamp(22px, 3.4vw, 34px) clamp(20px, 3vw, 32px);
  background-color: var(--ink);
  background-image: repeating-linear-gradient(
    135deg,
    rgba(251, 253, 251, 0.05) 0 1px,
    transparent 1px 13px
  );
  color: var(--mist);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
}

.page-disclaimer__keystone-text {
  margin: 0;
  max-width: 32em;
  font-size: clamp(16px, 2.1vw, 20px);
  font-weight: 700;
  line-height: 1.7;
}

/* ---------- 页尾 ---------- */
.page-disclaimer__foot {
  padding-top: clamp(30px, 5vw, 54px);
  padding-bottom: clamp(40px, 6.5vw, 76px);
  background-color: var(--paper-2);
  border-top: 1px solid var(--line);
}

.page-disclaimer__foot-kicker {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gray);
}

.page-disclaimer__foot-title {
  margin: 0 0 0.5em;
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 800;
  line-height: 1.24;
}

.page-disclaimer__foot-note {
  margin: 0 0 clamp(18px, 2.6vw, 26px);
  max-width: 34em;
  font-size: 15px;
  line-height: 1.75;
}

.page-disclaimer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-disclaimer__banner {
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
  }
}

@media (min-width: 900px) {
  .page-disclaimer__layout {
    grid-template-columns: var(--d-index-w) minmax(0, 1fr);
    gap: clamp(36px, 5.5vw, 78px);
    align-items: start;
  }

  .page-disclaimer__index {
    position: sticky;
    top: 92px;
  }

  .page-disclaimer__index-list {
    display: block;
    overflow: visible;
    padding-bottom: 0;
    border-left: 2px solid var(--ink);
  }

  .page-disclaimer__index-list > li + li {
    margin-top: 1px;
  }

  .page-disclaimer__index-link {
    border: 0;
    border-left: 3px solid transparent;
    margin-left: -2px;
    padding: 8px 10px;
    font-size: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer__banner img,
  .page-disclaimer__index-link,
  .page-disclaimer__summary {
    transition: none;
  }
}