.page-disclaimer {
  padding-top: var(--header-h);
}

.page-disclaimer .usage-shell {
  box-sizing: border-box;
  width: 100%;
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 20px 80px;
}

.page-disclaimer .usage-hero {
  padding: 48px 0 40px;
  border-bottom: 1px solid var(--hair);
}

.page-disclaimer .usage-hero__kicker {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--celadon-500);
}

.page-disclaimer .usage-hero__title {
  margin: 0 0 22px;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(30px, 5.6vw, 50px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  max-width: 17em;
}

.page-disclaimer .usage-hero__lede {
  margin: 0 0 32px;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-muted);
  max-width: 38em;
}

.page-disclaimer .usage-facts {
  border-top: 1px solid var(--hair);
}

.page-disclaimer .usage-facts .meta-list__key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--copper-300);
}

.page-disclaimer .usage-facts .meta-list__val {
  color: var(--text-primary);
  font-size: 14px;
}

/* ---------- 章节 ---------- */

.page-disclaimer .usage-sec {
  padding: 48px 0 8px;
  border-top: 1px solid var(--hair);
  margin-top: 44px;
}

.page-disclaimer .usage-sec:first-of-type {
  border-top: 0;
}

.page-disclaimer .usage-sec__head {
  max-width: 40em;
}

.page-disclaimer .usage-sec__kicker {
  display: inline-block;
  margin: 0 0 16px;
  padding: 4px 10px;
  border: 1px solid var(--hair-strong);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--copper-300);
}

.page-disclaimer .usage-sec__title {
  margin: 0 0 16px;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(24px, 4vw, 36px);
  line-height: 1.28;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.page-disclaimer .usage-sec__lede {
  margin: 0 0 28px;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-muted);
}

/* ---------- 配图 ---------- */

.page-disclaimer .usage-figure {
  margin: 0 0 28px;
}

.page-disclaimer .usage-figure .figure__frame {
  border: 1px solid var(--hair);
  overflow: hidden;
}

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

.page-disclaimer .usage-figure .figure__cap {
  margin-top: 10px;
  font-family: var(--font-body);
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: var(--text-muted);
}

/* ---------- 开关板 ---------- */

.page-disclaimer .switchboard {
  display: grid;
  gap: 1px;
  background: var(--hair);
  border: 1px solid rgba(63, 154, 158, 0.34);
}

.page-disclaimer .switchboard__item {
  background: var(--ink-800);
}

.page-disclaimer .switchboard__sum {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  border-left: 4px solid var(--celadon-500);
  transition: background-color 160ms ease, border-color 160ms ease;
}

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

.page-disclaimer .switchboard__sum:hover {
  background: var(--ink-700);
}

.page-disclaimer .switchboard__item[open] > .switchboard__sum {
  background: var(--ink-700);
  border-left-color: var(--copper-500);
}

.page-disclaimer .switchboard__code {
  font-family: var(--font-mono);
  font-size: 20px;
  letter-spacing: 0.06em;
  color: var(--copper-300);
}

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

.page-disclaimer .switchboard__name {
  display: block;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 16px;
  color: var(--text-primary);
}

.page-disclaimer .switchboard__use {
  display: block;
  margin-top: 4px;
  font-family: var(--font-body);
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-muted);
}

.page-disclaimer .switchboard__track {
  position: relative;
  display: block;
  width: 40px;
  height: 20px;
  border: 1px solid var(--celadon-500);
  border-radius: 10px;
  transition: background-color 160ms ease, border-color 160ms ease;
}

.page-disclaimer .switchboard__track::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--celadon-500);
  transition: transform 160ms ease, background-color 160ms ease;
}

.page-disclaimer .switchboard__item[open] .switchboard__track {
  background: var(--copper-500);
  border-color: var(--copper-500);
}

.page-disclaimer .switchboard__item[open] .switchboard__track::after {
  transform: translateX(18px);
  background: var(--ink-900);
}

.page-disclaimer .switchboard__body {
  padding: 6px 18px 22px 22px;
  border-left: 4px solid var(--copper-500);
  background: var(--ink-700);
}

/* ---------- 步骤 ---------- */

.page-disclaimer .steps {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
}

.page-disclaimer .steps__item {
  position: relative;
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 12px;
  padding-bottom: 16px;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.72;
  color: var(--text-primary);
}

.page-disclaimer .steps__item::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 26px;
  bottom: 0;
  width: 1px;
  background: var(--hair-strong);
}

.page-disclaimer .steps__item:last-child {
  padding-bottom: 0;
}

.page-disclaimer .steps__item:last-child::before {
  display: none;
}

.page-disclaimer .steps__num {
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border-radius: var(--radius);
  background: var(--copper-500);
  color: var(--ink-900);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.page-disclaimer .usage-copy {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
}

/* ---------- 语言与区间表 ---------- */

.page-disclaimer .langtable {
  overflow-x: auto;
  border: 1px solid var(--hair);
  background: var(--ink-800);
}

.page-disclaimer .langtable__table {
  width: 100%;
  min-width: 660px;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
}

.page-disclaimer .langtable__cap {
  padding: 14px 16px 0;
  text-align: left;
  font-family: var(--font-body);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.page-disclaimer .langtable__table th,
.page-disclaimer .langtable__table td {
  padding: 14px 16px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--hair);
  line-height: 1.65;
}

.page-disclaimer .langtable__table thead th {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--copper-300);
  background: var(--ink-700);
  white-space: nowrap;
}

.page-disclaimer .langtable__table tbody th {
  color: var(--text-primary);
  font-size: 14px;
  white-space: nowrap;
}

.page-disclaimer .langtable__table tbody td {
  color: var(--text-muted);
}

.page-disclaimer .langtable__table tbody tr:last-child th,
.page-disclaimer .langtable__table tbody tr:last-child td {
  border-bottom: 0;
}

/* ---------- 旁注 ---------- */

.page-disclaimer .note {
  margin: 24px 0 0;
  padding: 14px 16px;
  border-left: 3px solid var(--copper-500);
  background: var(--ink-800);
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-muted);
}

.page-disclaimer .note--celadon {
  border-left-color: var(--celadon-500);
}

.page-disclaimer .note--cinnabar {
  border-left-color: var(--cinnabar-600);
}

.page-disclaimer .note .link-more {
  color: var(--copper-300);
}

/* ---------- 编号卡 ---------- */

.page-disclaimer .codes {
  display: grid;
  gap: 16px;
}

.page-disclaimer .codes__item {
  padding: 20px 18px;
  border: 1px solid var(--hair);
  border-top: 3px solid var(--copper-500);
  background: var(--ink-800);
}

.page-disclaimer .codes__label {
  margin: 0 0 10px;
  font-family: var(--font-body);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--text-muted);
}

.page-disclaimer .codes__value {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 26px;
  letter-spacing: 0.06em;
  color: var(--copper-300);
}

.page-disclaimer .codes__text {
  margin: 0;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-primary);
}

/* ---------- 使用清单 ---------- */

.page-disclaimer .uselist {
  margin-top: 24px;
  padding: 22px 18px;
  border: 1px solid var(--hair);
  background: var(--ink-700);
}

.page-disclaimer .uselist__title {
  margin: 0 0 14px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 17px;
  color: var(--text-primary);
}

.page-disclaimer .uselist__items {
  margin: 0 0 16px;
  padding-left: 18px;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-muted);
}

.page-disclaimer .uselist__items li + li {
  margin-top: 8px;
}

.page-disclaimer .uselist__foot {
  margin: 0;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-muted);
}

.page-disclaimer .link-more {
  color: var(--copper-300);
}

/* ---------- 排查清单 ---------- */

.page-disclaimer .checks {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--hair);
  border: 1px solid var(--hair);
}

.page-disclaimer .checks__item {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 18px;
  background: var(--ink-800);
}

.page-disclaimer .checks__box {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--celadon-500);
  border-radius: var(--radius);
  color: var(--celadon-500);
  font-family: var(--font-mono);
  font-size: 14px;
}

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

.page-disclaimer .checks__title {
  margin: 0 0 6px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 16px;
  color: var(--text-primary);
}

.page-disclaimer .checks__text {
  margin: 0;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-muted);
}

/* ---------- 引用与变更 ---------- */

.page-disclaimer .citetwo {
  display: grid;
  gap: 16px;
}

.page-disclaimer .citetwo__col {
  padding: 22px 18px;
  border: 1px solid var(--hair);
  background: var(--ink-800);
}

.page-disclaimer .citetwo__col:nth-child(2) {
  border-top: 3px solid var(--cinnabar-600);
}

.page-disclaimer .citetwo__col:nth-child(1) {
  border-top: 3px solid var(--celadon-500);
}

.page-disclaimer .citetwo__title {
  margin: 0 0 14px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 17px;
  color: var(--text-primary);
}

.page-disclaimer .citetwo__list {
  margin: 0;
  padding-left: 18px;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-muted);
}

.page-disclaimer .citetwo__list li + li {
  margin-top: 10px;
}

/* ---------- 结尾 ---------- */

.page-disclaimer .usage-cta {
  margin-top: 48px;
  padding: 32px 22px;
  border: 1px solid var(--hair-strong);
  background: linear-gradient(160deg, var(--ink-700) 0%, var(--ink-800) 68%, var(--ink-900) 100%);
}

.page-disclaimer .usage-cta__title {
  margin: 0 0 12px;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(20px, 3.4vw, 28px);
  line-height: 1.35;
  color: var(--text-primary);
}

.page-disclaimer .usage-cta__text {
  margin: 0 0 22px;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-muted);
  max-width: 36em;
}

.page-disclaimer .usage-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 760px) {
  .page-disclaimer .codes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-disclaimer .usage-hero {
    padding: 64px 0 48px;
  }
}

@media (min-width: 1080px) {
  .page-disclaimer .usage-shell {
    max-width: calc(1040px + var(--rail-w));
    padding-left: calc(28px + var(--rail-w));
    padding-right: 28px;
  }

  .page-disclaimer .usage-facts {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0 24px;
    padding-top: 18px;
  }

  .page-disclaimer .switchboard__body {
    padding: 10px 28px 28px 34px;
  }

  .page-disclaimer .usage-cta {
    padding: 40px 34px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .switchboard__sum,
  .page-disclaimer .switchboard__track,
  .page-disclaimer .switchboard__track::after {
    transition: none;
  }
}