.page-disclaimer {
  --disc-rule: rgba(4, 18, 31, 0.14);
  --disc-ink: #10202C;
  --disc-ink-soft: #35485A;
  --disc-mark: #B5460F;
  background: var(--ink-900);
  color: var(--fog-050);
  padding-bottom: clamp(28px, 6vw, 72px);
}

.page-disclaimer a:focus-visible,
.page-disclaimer [tabindex]:focus-visible {
  outline: 3px solid var(--focus-ring);
  outline-offset: 2px;
}

.page-disclaimer .crumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: baseline;
  font-size: 13px;
  color: var(--steel-400);
  margin: 0 0 18px;
}

.page-disclaimer .crumbs a {
  color: var(--steel-400);
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease);
}

.page-disclaimer .crumbs a:hover {
  color: var(--paper-100);
}

.page-disclaimer .crumbs__sep {
  color: rgba(124, 156, 180, 0.6);
}

.page-disclaimer .eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--orange-300);
}

/* hero */
.disc-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(22px, 4vw, 44px) 0 clamp(24px, 4vw, 46px);
  background:
    radial-gradient(120% 140% at 10% 0%, #123D5A 0%, var(--ink-800) 46%, var(--ink-900) 100%);
}

.disc-hero::after {
  content: "";
  position: absolute;
  right: -14%;
  bottom: -46%;
  width: 62%;
  height: 150%;
  background: repeating-linear-gradient(
    116deg,
    rgba(255, 107, 26, 0.11) 0 2px,
    transparent 2px 26px
  );
  transform: rotate(-8deg);
  pointer-events: none;
}

.disc-hero .u-shell {
  position: relative;
  z-index: 1;
}

.disc-hero__grid {
  display: grid;
  gap: clamp(18px, 3vw, 30px);
}

.disc-hero h1 {
  margin: 0 0 14px;
  font-size: clamp(27px, 4.6vw, 54px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-weight: 900;
  color: var(--fog-050);
}

.disc-hero__intro {
  margin: 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
  color: rgba(234, 241, 247, 0.86);
}

.disc-fact {
  display: grid;
  gap: 10px;
  align-content: start;
  padding: 18px;
  background: var(--ink-800);
  border: 1px solid var(--edge-1);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-sheet);
}

.disc-fact .tag-paper {
  justify-self: start;
}

.disc-fact__ver {
  margin: 2px 0 0;
  font-size: 42px;
  line-height: 1;
  font-weight: 600;
  color: var(--mint-400);
  letter-spacing: -0.02em;
}

.disc-fact__label {
  margin: 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--steel-400);
}

.disc-fact__list {
  margin: 4px 0 0;
  padding-left: 16px;
  display: grid;
  gap: 4px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--fog-050);
}

.disc-fact__list li::marker {
  color: var(--orange-500);
}

.disc-banner {
  margin: clamp(20px, 3.4vw, 34px) 0 0;
  overflow: hidden;
  border: 1px solid var(--edge-1);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-sheet);
  background: var(--ink-700);
}

.disc-banner img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 5;
  object-fit: cover;
}

/* layout */
.disc-layout {
  display: grid;
  gap: clamp(18px, 3vw, 32px);
  padding: clamp(24px, 4.4vw, 52px) 0 clamp(10px, 2vw, 20px);
}

/* index */
.disc-index {
  background: var(--ink-800);
  border: 1px solid var(--edge-1);
  border-radius: var(--radius-card);
  padding: 14px 14px 12px;
}

.disc-index__title {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--mint-400);
}

.disc-index__list {
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.disc-index__list li {
  flex: 0 0 auto;
}

.disc-index a {
  display: flex;
  gap: 8px;
  align-items: baseline;
  padding: 8px 11px;
  border-radius: 8px;
  border-left: 2px solid transparent;
  color: var(--fog-050);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.4;
  white-space: nowrap;
  transition: background var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}

.disc-index a .mono {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  color: var(--orange-300);
}

.disc-index a:hover {
  background: var(--ink-700);
  border-left-color: var(--orange-500);
}

/* document */
.disc-doc {
  background: linear-gradient(180deg, #F8F1E5 0%, var(--paper-100) 34%);
  color: var(--disc-ink);
  border: 1px solid rgba(242, 233, 216, 0.5);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-sheet);
  padding: clamp(18px, 3.2vw, 44px);
}

.disc-doc__head {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--disc-ink);
}

.disc-doc__head p {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--disc-ink-soft);
}

.disc-doc__stamp {
  font-size: 11px;
  letter-spacing: 0.14em;
  padding: 4px 10px;
  border: 1px solid var(--disc-mark);
  border-radius: 3px;
  color: var(--disc-mark);
}

.disc-sec {
  padding-top: clamp(20px, 3vw, 32px);
  scroll-margin-top: 104px;
}

.disc-sec + .disc-sec {
  border-top: 1px solid var(--disc-rule);
  margin-top: 4px;
}

.disc-sec__head {
  display: flex;
  gap: 12px;
  align-items: baseline;
  margin-bottom: 12px;
}

.disc-sec__num {
  flex: 0 0 auto;
  font-size: 12px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 4px;
  color: var(--disc-mark);
  background: rgba(255, 107, 26, 0.14);
  border: 1px solid rgba(255, 107, 26, 0.4);
}

.disc-sec h2 {
  margin: 0;
  font-size: clamp(19px, 2.4vw, 26px);
  line-height: 1.28;
  letter-spacing: -0.01em;
  color: var(--disc-ink);
}

.disc-doc p {
  margin: 0 0 12px;
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--disc-ink);
}

.disc-doc p:last-child {
  margin-bottom: 0;
}

.disc-doc a {
  color: var(--disc-mark);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
  transition: color var(--dur-fast) var(--ease);
}

.disc-doc a:hover {
  color: var(--orange-500);
}

.disc-key {
  font-weight: 500;
  border-bottom: 2px solid rgba(255, 107, 26, 0.5);
  padding-bottom: 1px;
}

.disc-list {
  list-style: none;
  margin: 6px 0 4px;
  padding: 0;
  display: grid;
  gap: 8px;
  max-width: 68ch;
}

.disc-list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.72;
  color: var(--disc-ink-soft);
}

.disc-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.68em;
  width: 9px;
  height: 2px;
  background: var(--orange-500);
}

/* brief sheets */
.disc-brief {
  display: grid;
  gap: 10px;
  margin: clamp(18px, 2.6vw, 26px) 0;
  padding: 18px 20px;
  background: var(--ink-800);
  color: var(--fog-050);
  border: 1px solid rgba(31, 224, 166, 0.3);
  border-radius: var(--radius-card);
  box-shadow: 4px 6px 0 rgba(4, 18, 31, 0.28);
}

.disc-brief .tag-paper {
  justify-self: start;
}

.disc-brief__lead {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--paper-100);
}

.disc-brief ul {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 6px;
  font-size: 14px;
  line-height: 1.72;
  color: #C9D8E4;
}

.disc-brief ul li::marker {
  color: var(--mint-400);
}

.disc-brief__mono {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.9;
  color: var(--mint-400);
  word-break: break-word;
}

.disc-brief p:last-child {
  margin-bottom: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--steel-400);
}

/* change timeline */
.disc-timeline {
  list-style: none;
  display: flex;
  gap: 12px;
  margin: 16px 0 6px;
  padding: 4px 2px 12px;
  overflow-x: auto;
  scroll-snap-type: x proximity;
}

.disc-timeline__item {
  flex: 0 0 min(250px, 82%);
  scroll-snap-align: start;
  padding: 12px 14px;
  background: var(--ink-900);
  color: var(--fog-050);
  border: 1px solid var(--edge-1);
  border-radius: 10px;
  transition: transform var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}

.disc-timeline__item:hover,
.disc-timeline__item:focus {
  transform: translateY(-3px);
  border-color: var(--orange-300);
}

.disc-timeline__ver {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  padding: 1px 7px;
  border-radius: 3px;
  color: var(--ink-900);
  background: var(--mint-400);
}

.disc-timeline__label {
  display: block;
  margin-top: 8px;
  font-size: 14px;
  font-weight: 700;
  color: var(--paper-100);
}

.disc-timeline__more {
  margin: 6px 0 0;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  font-size: 13px;
  line-height: 1.68;
  color: var(--steel-400);
  transition: max-height var(--dur) var(--ease), opacity var(--dur) var(--ease), margin var(--dur) var(--ease);
}

.disc-timeline__item:hover .disc-timeline__more,
.disc-timeline__item:focus .disc-timeline__more {
  max-height: 150px;
  opacity: 1;
  margin-top: 8px;
}

@media (hover: none) {
  .disc-timeline__more {
    max-height: none;
    opacity: 1;
    margin-top: 8px;
  }
}

.disc-doc__foot {
  margin-top: clamp(20px, 3vw, 30px);
  padding-top: 18px;
  border-top: 1px solid var(--disc-rule);
  font-size: 15px;
  line-height: 1.75;
  color: var(--disc-ink-soft);
}

@media (min-width: 640px) {
  .disc-brief {
    padding: 20px 24px;
  }
}

@media (min-width: 900px) {
  .disc-hero__grid {
    grid-template-columns: minmax(0, 1fr) 300px;
    align-items: end;
  }

  .disc-layout {
    grid-template-columns: 252px minmax(0, 1fr);
    align-items: start;
    gap: clamp(24px, 3vw, 40px);
  }

  .disc-index {
    position: sticky;
    top: 96px;
    padding: 18px;
  }

  .disc-index__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }

  .disc-index__list li {
    flex: 1 1 auto;
  }

  .disc-index a {
    white-space: normal;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer *,
  .page-disclaimer *::before,
  .page-disclaimer *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }

  .disc-timeline__item:hover,
  .disc-timeline__item:focus {
    transform: none;
  }
}