/* ===== 页面作用域：使用说明 ===== */
.page-disclaimer {
  --ds-accent: var(--winter);
  --ds-flow: linear-gradient(90deg, var(--spring), var(--summer) 35%, var(--autumn) 65%, var(--winter));
  padding-bottom: 48px;
}

/* 面包屑 */
.page-disclaimer .ds-crumb {
  padding-top: 22px;
}

/* ---------- 首屏 ---------- */
.page-disclaimer .ds-hero {
  position: relative;
  padding-top: 22px;
}

.page-disclaimer .ds-hero__inner {
  display: grid;
  gap: 26px;
}

.page-disclaimer .ds-hero__kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-50);
}

.page-disclaimer .ds-hero__kicker::before {
  content: "";
  width: 28px;
  height: 3px;
  border-radius: 2px;
  background: var(--ds-flow);
}

.page-disclaimer .ds-hero h1 {
  margin: 14px 0 0;
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(32px, 7.2vw, 54px);
  line-height: 1.12;
  letter-spacing: .01em;
  color: var(--ink);
}

.page-disclaimer .ds-hero .lede {
  margin: 16px 0 0;
  max-width: 44em;
  color: var(--ink-70);
}

/* 锚点索引 */
.page-disclaimer .ds-index {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .ds-index__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper-hi);
  color: var(--ink);
  font-size: 14px;
  text-decoration: none;
  transition: border-color .2s ease, transform .2s ease, background-color .2s ease;
}

.page-disclaimer .ds-index__link:hover,
.page-disclaimer .ds-index__link:focus-visible {
  border-color: var(--winter);
  background: rgba(169, 187, 209, .22);
  transform: translateY(-1px);
}

.page-disclaimer .ds-index__no {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--winter);
}

/* 摘要卡 */
.page-disclaimer .ds-summary {
  position: relative;
  padding: 22px 22px 18px;
  border-radius: var(--r-l);
  border-left: 5px solid var(--winter);
  background:
    repeating-linear-gradient(135deg, rgba(31, 27, 22, .035) 0 1px, transparent 1px 11px),
    var(--sand);
  box-shadow: var(--shadow-m);
}

.page-disclaimer .ds-summary__title {
  margin: 0 0 14px;
  font-family: var(--serif);
  font-weight: 700;
  font-size: 18px;
  color: var(--ink);
}

.page-disclaimer .ds-summary__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-disclaimer .ds-summary__row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 6px 14px;
  padding-bottom: 9px;
  border-bottom: 1px dashed var(--line);
}

.page-disclaimer .ds-summary__row:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-disclaimer .ds-summary__key {
  font-size: 13.5px;
  color: var(--ink-70);
}

.page-disclaimer .ds-summary__val {
  font-family: var(--mono);
  font-size: 13.5px;
  font-weight: 500;
  color: var(--ink);
}

/* 页首图 */
.page-disclaimer .ds-figure {
  margin: 32px auto 0;
}

.page-disclaimer .ds-figure__frame {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--r-l);
  overflow: hidden;
  background:
    repeating-linear-gradient(115deg, rgba(62, 95, 138, .12) 0 2px, transparent 2px 13px),
    linear-gradient(180deg, var(--winter-soft), var(--paper-hi) 72%);
}

.page-disclaimer .ds-figure__frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  opacity: .93;
}

.page-disclaimer .ds-figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink-50);
}

/* ---------- 四张说明卡片 ---------- */
.page-disclaimer .ds-body {
  padding-top: 40px;
}

.page-disclaimer .ds-cards {
  display: grid;
  gap: 16px;
  margin: 0;
}

.page-disclaimer .ds-card {
  --ds-accent: var(--spring);
  border: 1px solid var(--line);
  border-radius: var(--r-m);
  background: var(--paper-hi);
  overflow: hidden;
  transition: border-color .25s ease, box-shadow .25s ease;
}

.page-disclaimer .ds-card:nth-child(2) { --ds-accent: var(--autumn); }
.page-disclaimer .ds-card:nth-child(3) { --ds-accent: var(--winter); }
.page-disclaimer .ds-card:nth-child(4) { --ds-accent: var(--summer); }

.page-disclaimer .ds-card[open] {
  border-color: var(--line-strong);
  box-shadow: var(--shadow-m);
}

.page-disclaimer .ds-card__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  border-top: 3px solid var(--ds-accent);
  cursor: pointer;
  list-style: none;
}

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

.page-disclaimer .ds-card__head:focus-visible {
  outline: 2px solid var(--ds-accent);
  outline-offset: -3px;
}

.page-disclaimer .ds-card__no {
  align-self: start;
  padding: 4px 8px;
  border-radius: var(--r-s);
  background: rgba(31, 27, 22, .06);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--ink);
}

.page-disclaimer .ds-card__titles {
  display: block;
  min-width: 0;
}

.page-disclaimer .ds-card__title {
  display: block;
  font-family: var(--serif);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.35;
  color: var(--ink);
}

.page-disclaimer .ds-card__sub {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  line-height: 1.55;
  color: var(--ink-50);
}

.page-disclaimer .ds-card__caret {
  width: 9px;
  height: 9px;
  margin-right: 4px;
  border-right: 2px solid var(--ink-50);
  border-bottom: 2px solid var(--ink-50);
  transform: rotate(45deg);
  transition: transform .25s ease, border-color .25s ease;
}

.page-disclaimer .ds-card[open] .ds-card__caret {
  transform: rotate(225deg);
  border-color: var(--ds-accent);
}

.page-disclaimer .ds-card__body {
  padding: 16px 18px 20px;
  border-top: 1px dashed var(--line);
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--ink-70);
}

.page-disclaimer .ds-card__body p {
  margin: 0;
}

.page-disclaimer .ds-mono {
  font-family: var(--mono);
  font-size: .93em;
  letter-spacing: .02em;
  color: var(--gold-deep);
}

/* 列表 */
.page-disclaimer .ds-list {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 9px;
}

.page-disclaimer .ds-list li {
  position: relative;
  padding-left: 20px;
}

.page-disclaimer .ds-list li::before {
  content: "";
  position: absolute;
  left: 1px;
  top: .62em;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--ds-accent);
  transform: rotate(45deg);
}

/* 操作按钮 */
.page-disclaimer .ds-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

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

/* 邮箱复制行 */
.page-disclaimer .ds-copy {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 12px;
  margin-top: 16px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--r-m);
  background: rgba(239, 227, 206, .55);
}

.page-disclaimer .ds-copy__key {
  font-size: 13px;
  color: var(--ink-50);
}

.page-disclaimer .ds-copy__val {
  flex: 1 1 200px;
  min-width: 0;
  font-family: var(--mono);
  font-size: 13.5px;
  word-break: break-all;
  color: var(--ink);
}

.page-disclaimer .ds-copy__btn {
  padding: 6px 14px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: var(--paper-hi);
  font-family: var(--sans);
  font-size: 13px;
  color: var(--ink);
  cursor: pointer;
  transition: border-color .2s ease, background-color .2s ease;
}

.page-disclaimer .ds-copy__btn:hover,
.page-disclaimer .ds-copy__btn:focus-visible {
  border-color: var(--summer);
  background: rgba(228, 87, 61, .1);
}

.page-disclaimer .ds-copy__status {
  margin: 8px 0 0;
  min-height: 1.2em;
  font-size: 13px;
  color: var(--gold-deep);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-disclaimer .ds-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-disclaimer .ds-card__body {
    padding: 18px 20px 22px;
  }
}

@media (min-width: 980px) {
  .page-disclaimer .ds-crumb {
    padding-top: 30px;
  }

  .page-disclaimer .ds-hero__inner {
    grid-template-columns: minmax(0, 1.08fr) minmax(300px, .92fr);
    align-items: start;
    gap: 48px;
  }

  .page-disclaimer .ds-summary {
    margin-top: 46px;
  }

  .page-disclaimer .ds-figure {
    margin-top: 40px;
  }

  .page-disclaimer .ds-body {
    padding-top: 52px;
  }

  .page-disclaimer .ds-cards {
    gap: 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .ds-index__link,
  .page-disclaimer .ds-card,
  .page-disclaimer .ds-card__caret,
  .page-disclaimer .ds-copy__btn {
    transition: none;
  }
}