.page-disclaimer {
  --disc-num-w: 2.5ch;
  position: relative;
  background: var(--color-cream);
  color: var(--color-ink);
  overflow-x: hidden;
}

/* ========== 说明书封面 ========== */
.disclaimer-hero {
  position: relative;
  padding: clamp(1.75rem, 5vw, 3.5rem) 0 clamp(2.5rem, 7vw, 4.5rem);
  background: linear-gradient(120deg, transparent 72%, rgba(245, 74, 0, 0.06) 72%);
}

.disclaimer-hero::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 6px;
  background: linear-gradient(to right, var(--color-flame) 0 40px, var(--color-electric) 40px 72px, var(--color-line) 72px);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.hero-figure {
  margin: 0;
}

.hero-img {
  display: block;
  width: 100%;
  height: auto;
  border: 2px solid var(--color-ink);
  box-shadow: 10px 10px 0 rgba(36, 33, 28, 0.12);
}

.hero-figure .figure-caption {
  margin-top: 0.75rem;
  font-family: var(--font-data);
  font-size: 0.8125rem;
  color: var(--color-rock-dark);
}

.hero-copy {
  position: relative;
  z-index: 1;
}

.page-disclaimer .breadcrumb {
  margin: 0 0 1.25rem;
  font-family: var(--font-data);
  font-size: 0.8125rem;
}

.page-disclaimer .breadcrumb ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
}

.page-disclaimer .breadcrumb li + li::before {
  content: '→';
  margin-right: 0.5rem;
  color: var(--color-rock);
}

.page-disclaimer .breadcrumb a {
  color: var(--color-electric);
}

.page-disclaimer .breadcrumb [aria-current="page"] {
  color: var(--color-rock-dark);
}

.hero-kicker {
  font-family: var(--font-data);
  font-size: 0.8125rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-flame);
  margin: 0 0 0.6rem;
}

.hero-copy h1 {
  font-family: var(--font-head);
  font-size: clamp(2.25rem, 7vw, 4.5rem);
  line-height: 0.98;
  margin: 0 0 1rem;
}

.lede {
  font-size: clamp(1rem, 1.6vw, 1.2rem);
  line-height: 1.8;
  color: var(--color-rock-dark);
  max-width: 52ch;
  margin: 0 0 1.5rem;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.meta-chip {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-data);
  font-size: 0.8125rem;
  background: var(--color-gold);
  border: 1px solid var(--color-ink);
  padding: 0.35rem 0.75rem;
  white-space: nowrap;
}

/* ========== 正文主体 ========== */
.disclaimer-body {
  padding: var(--space-section) 0;
  background: linear-gradient(90deg, rgba(228, 215, 199, 0.22) 1px, transparent 1px);
  background-size: 40px 100%;
}

.body-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}

/* —— 左栏目录 —— */
.disclaimer-index {
  position: relative;
  background: var(--color-night);
  color: var(--color-cream);
  padding: 1.5rem 1.25rem;
  border-left: 6px solid var(--color-flame);
  align-self: start;
}

.index-label {
  font-family: var(--font-data);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin: 0 0 1.25rem;
}

.index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}

.index-list a {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--color-cream);
  text-decoration: none;
  padding: 0.4rem 0;
  border-bottom: 1px solid rgba(246, 239, 227, 0.12);
  font-weight: 600;
}

.index-list a:hover,
.index-list a:focus-visible {
  color: var(--color-gold);
}

.index-num {
  flex-shrink: 0;
  width: 2rem;
  height: 2rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-flame);
  color: #fff;
  font-family: var(--font-data);
  font-size: 0.75rem;
  transform: skewX(-8deg);
}

.index-text {
  transform: translateY(0.05em);
}

.index-support {
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(246, 239, 227, 0.18);
  font-size: 0.875rem;
}

.index-support p {
  margin: 0 0 0.35rem;
  color: var(--color-rock);
}

.index-support a {
  color: var(--color-gold);
  font-family: var(--font-data);
}

/* —— 右栏章节 —— */
.disclosure {
  border-top: 4px solid var(--color-flame);
  background: var(--color-cream);
}

.disclosure + .disclosure {
  margin-top: 2rem;
}

.disclosure summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.1rem 0.25rem;
}

.disclosure summary::-webkit-details-marker {
  display: none;
}

.disclosure summary:focus-visible {
  outline: 2px solid var(--color-electric);
  outline-offset: 2px;
}

.disclosure-num {
  flex-shrink: 0;
  font-family: var(--font-head);
  font-size: clamp(2rem, 4vw, 3.25rem);
  line-height: 1;
  color: var(--color-flame);
  min-width: var(--disc-num-w);
  text-align: right;
  transform: skewX(-8deg);
}

.disclosure-title {
  font-family: var(--font-head);
  font-size: clamp(1.2rem, 2.6vw, 1.75rem);
  line-height: 1.05;
}

.disclosure summary:hover .disclosure-title {
  color: var(--color-flame);
}

.disclosure-toggle {
  margin-left: auto;
  flex-shrink: 0;
  width: 0.6rem;
  height: 0.6rem;
  border-right: 2px solid var(--color-rock-dark);
  border-bottom: 2px solid var(--color-rock-dark);
  transform: rotate(45deg);
  transition: transform 0.24s var(--ease-out), border-color 0.24s;
}

.disclosure[open] .disclosure-toggle {
  transform: rotate(225deg);
}

.disclosure:not([open]) summary {
  background: rgba(36, 33, 28, 0.025);
}

.disclosure:not([open]) .disclosure-toggle {
  border-color: var(--color-flame);
}

.disclosure-body {
  padding: 0.25rem 0.25rem 2rem;
}

.disclosure-body p {
  margin: 0 0 1rem;
  line-height: 1.75;
  color: var(--color-ink);
}

.disclosure-body a {
  color: var(--color-electric);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.boundary-list {
  list-style: none;
  margin: 1.25rem 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}

.boundary-list li {
  position: relative;
  padding-left: 1.25rem;
  line-height: 1.7;
}

.boundary-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 0.55rem;
  height: 0.55rem;
  background: var(--color-flame);
  transform: skewX(-20deg);
}

.boundary-list strong {
  color: var(--color-ink);
}

/* —— 警示条 —— */
.notice-bar {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  background: var(--color-gold);
  border: 1px solid var(--color-ink);
  padding: 1rem 1.15rem;
  margin: 1.5rem 0 0.5rem;
  box-shadow: 6px 6px 0 rgba(36, 33, 28, 0.1);
}

.notice-icon {
  flex-shrink: 0;
  color: var(--color-ink);
  margin-top: 0.15rem;
}

.notice-copy {
  flex: 1;
}

.notice-title {
  font-family: var(--font-head);
  font-size: 0.875rem;
  letter-spacing: 0.1em;
  margin: 0 0 0.3rem;
}

.notice-text {
  margin: 0 0 0.35rem;
  font-weight: 700;
}

.notice-more {
  margin: 0;
  font-size: 0.875rem;
  color: var(--color-ink);
  opacity: 0.72;
  transition: opacity 0.24s var(--ease-out);
}

.notice-bar:hover .notice-more,
.notice-bar:focus-within .notice-more,
.notice-bar:focus .notice-more {
  opacity: 1;
}

/* —— 数据面板 —— */
.source-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  margin: 1.5rem 0 1.25rem;
}

.source-item {
  background: rgba(246, 239, 227, 0.6);
  border: 1px solid var(--color-line);
  border-top: 3px solid var(--color-flame);
  padding: 1rem 0.9rem;
}

.source-item:nth-child(even) {
  border-top-color: var(--color-electric);
}

.source-num {
  display: block;
  font-family: var(--font-head);
  font-size: clamp(1.6rem, 4vw, 2.5rem);
  line-height: 1;
  color: var(--color-ink);
}

.source-label {
  display: block;
  margin-top: 0.4rem;
  font-family: var(--font-data);
  font-size: 0.75rem;
  color: var(--color-rock-dark);
  letter-spacing: 0.02em;
}

.source-note {
  font-size: 0.875rem;
  color: var(--color-rock-dark);
}

/* —— 变更标签 —— */
.tag-list {
  list-style: none;
  margin: 1.5rem 0 1.25rem;
  padding: 0;
  border: 1px solid var(--color-line);
}

.tag-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.7rem 0.9rem;
  background: rgba(246, 239, 227, 0.55);
}

.tag-item + .tag-item {
  border-top: 1px solid var(--color-line);
}

.tag-pill {
  flex-shrink: 0;
  font-family: var(--font-data);
  font-size: 0.75rem;
  background: var(--color-ink);
  color: var(--color-cream);
  padding: 0.2rem 0.55rem;
  letter-spacing: 0.03em;
}

.tag-desc {
  font-size: 0.9375rem;
  color: var(--color-ink);
}

/* —— 收尾与返回 —— */
.closing-note {
  margin: 2.5rem 0 0;
  padding: 1.25rem 1.5rem;
  border-left: 4px solid var(--color-electric);
  background: rgba(0, 140, 193, 0.08);
  font-size: 0.9375rem;
}

.closing-note p {
  margin: 0;
  line-height: 1.7;
}

.closing-note a {
  color: var(--color-electric);
}

.back-home {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  margin: 2.5rem 0 0.5rem;
  font-family: var(--font-head);
  font-size: 1.2rem;
  text-decoration: none;
  color: var(--color-ink);
  border: 2px solid var(--color-ink);
  padding: 0.9rem 1.4rem;
  background: var(--color-cream);
  transition: background 0.24s var(--ease-out), color 0.24s, transform 0.24s var(--ease-out), border-color 0.24s;
}

.back-home:hover,
.back-home:focus-visible {
  background: var(--color-flame);
  border-color: var(--color-flame);
  color: #fff;
  transform: translateY(-4px);
}

.back-arrow {
  font-size: 1.6rem;
  line-height: 1;
}

/* ========== 桌面端 ========== */
@media (min-width: 880px) {
  .hero-grid {
    grid-template-columns: minmax(280px, 5fr) 7fr;
    gap: clamp(1.5rem, 4vw, 3.5rem);
    align-items: center;
  }

  .hero-figure {
    margin-top: 2rem;
  }

  .body-grid {
    grid-template-columns: 250px 1fr;
    gap: clamp(2rem, 5vw, 4rem);
    align-items: start;
  }

  .disclaimer-index {
    position: sticky;
    top: 100px;
  }

  .disclosure-body {
    padding-left: calc(var(--disc-num-w) + 1.25rem);
  }
}