/* ===== 使用说明页 · 页面作用域 ===== */
.page-disclaimer {
  --dis-line-soft: rgba(42, 53, 100, .55);
  --dis-yellow-soft: rgba(242, 193, 78, .55);
  --dis-gap: clamp(26px, 4vw, 44px);
  display: block;
}

/* ---- 面包屑 ---- */
.page-disclaimer .breadcrumb {
  margin: 0 0 clamp(18px, 3vw, 30px);
}
.page-disclaimer .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: .8rem;
  letter-spacing: .06em;
  color: var(--muted);
}
.page-disclaimer .breadcrumb li + li::before {
  content: "／";
  color: var(--line);
  margin: 0 8px;
}
.page-disclaimer .breadcrumb a {
  color: var(--text);
  text-decoration: none;
  transition: color .18s var(--ease);
}
.page-disclaimer .breadcrumb a:hover,
.page-disclaimer .breadcrumb a:focus-visible {
  color: var(--cyan);
}

/* ---- 首屏 ---- */
.page-disclaimer .dis-mast {
  position: relative;
  padding: clamp(22px, 3.5vw, 40px) 0 clamp(26px, 4vw, 46px);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(95% 130% at 94% -12%, rgba(47, 214, 196, .15), transparent 60%),
    linear-gradient(180deg, rgba(19, 28, 70, .55), rgba(11, 18, 48, 0) 74%);
}
.page-disclaimer .dis-mast-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 4vw, 44px);
}
.page-disclaimer h1 {
  margin: .5em 0 0;
  font-family: var(--font-head);
  font-weight: 300;
  font-size: clamp(1.85rem, 5.4vw, 3.3rem);
  line-height: 1.2;
  letter-spacing: .05em;
  color: var(--white);
}
.page-disclaimer .dis-mast-copy .lede {
  margin-top: 1.1em;
  max-width: 52ch;
  font-size: clamp(.95rem, 1.35vw, 1.05rem);
  line-height: 1.85;
  color: var(--text);
}

/* 首屏取景框：切角 + 内嵌描边 */
.page-disclaimer .media-frame {
  --media-ratio: 5 / 4;
  display: block;
  margin: 0;
  background: var(--panel);
  border: 1px solid var(--line);
  overflow: hidden;
  clip-path: polygon(
    var(--cut) 0, 100% 0,
    100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%,
    0 100%, 0 var(--cut)
  );
}
.page-disclaimer .media-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}
.page-disclaimer .media-frame .media-caption {
  padding: 12px 16px 14px;
  font-size: .78rem;
  line-height: 1.7;
  color: var(--muted);
  border-top: 1px solid var(--dis-line-soft);
}

/* ---- 章节索引滑轨 ---- */
.page-disclaimer .dis-index-wrap {
  padding: clamp(12px, 2vw, 18px) 0;
  border-bottom: 1px solid var(--line);
  background: rgba(11, 18, 48, .6);
}
.page-disclaimer .dis-index {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}
.page-disclaimer .dis-index li {
  flex: 0 0 auto;
}
.page-disclaimer .dis-index a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 14px;
  border: 1px solid var(--line);
  background: rgba(19, 28, 70, .6);
  color: var(--text);
  text-decoration: none;
  font-size: .84rem;
  letter-spacing: .04em;
  transition: border-color .18s var(--ease), color .18s var(--ease), background-color .18s var(--ease);
}
.page-disclaimer .dis-index a .num {
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--cyan);
}
.page-disclaimer .dis-index a:hover,
.page-disclaimer .dis-index a:focus-visible {
  border-color: var(--cyan);
  background: rgba(47, 214, 196, .1);
  color: var(--white);
}

/* ---- 正文骨架 ---- */
.page-disclaimer .dis-body {
  display: grid;
  gap: var(--dis-gap);
  padding-top: clamp(26px, 4vw, 46px);
  padding-bottom: clamp(28px, 5vw, 54px);
}

.page-disclaimer .dis-section {
  padding-top: clamp(20px, 3vw, 30px);
  border-top: 1px solid var(--line);
  scroll-margin-top: 104px;
}
.page-disclaimer .dis-section-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: clamp(10px, 2vw, 16px);
}
.page-disclaimer .dis-no {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: .76rem;
  font-weight: 500;
  letter-spacing: .14em;
  color: var(--cyan);
}
.page-disclaimer .dis-section-head h2 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 300;
  font-size: clamp(1.14rem, 3vw, 1.6rem);
  line-height: 1.4;
  letter-spacing: .05em;
  color: var(--white);
}

/* ---- 条目清单 ---- */
.page-disclaimer .dis-list {
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-disclaimer .dis-list li {
  position: relative;
  padding: 16px 0 16px 40px;
  border-top: 1px solid var(--dis-line-soft);
  font-size: .96rem;
  line-height: 1.85;
  color: var(--text);
}
.page-disclaimer .dis-list li:first-child {
  border-top: 0;
  padding-top: 4px;
}
.page-disclaimer .dis-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.95em;
  width: 22px;
  height: 2px;
  background: var(--cyan);
  opacity: .85;
}
.page-disclaimer .dis-list li:first-child::before {
  top: 1.05em;
}
.page-disclaimer .dis-key {
  font-family: var(--font-mono);
  font-size: .92em;
  font-weight: 500;
  letter-spacing: .01em;
  color: var(--cyan);
  word-break: break-all;
}

/* ---- 引用速查面板 ---- */
.page-disclaimer .dis-quote {
  position: relative;
  padding: clamp(22px, 3.2vw, 34px) clamp(20px, 3.2vw, 38px) clamp(24px, 3.2vw, 36px);
  background: linear-gradient(160deg, rgba(242, 193, 78, .1), rgba(19, 28, 70, .78) 62%);
  border-left: 3px solid var(--yellow);
  clip-path: polygon(
    0 0, calc(100% - var(--cut)) 0, 100% var(--cut),
    100% 100%, 0 100%
  );
}
.page-disclaimer .dis-quote::after {
  content: "";
  position: absolute;
  right: 22px;
  top: 22px;
  width: 46px;
  height: 2px;
  background: var(--yellow);
  transform: rotate(-12deg);
  opacity: .7;
}
.page-disclaimer .dis-quote-summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 16px;
  cursor: pointer;
  list-style: none;
  outline: none;
}
.page-disclaimer .dis-quote-summary::-webkit-details-marker {
  display: none;
}
.page-disclaimer .dis-quote-summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 6px;
}
.page-disclaimer .dis-quote-eyebrow {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--yellow);
}
.page-disclaimer .dis-quote-title {
  font-family: var(--font-head);
  font-weight: 300;
  font-size: clamp(1.05rem, 2.6vw, 1.4rem);
  letter-spacing: .05em;
  color: var(--white);
}
.page-disclaimer .dis-quote-chev {
  margin-left: auto;
  flex: 0 0 auto;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--yellow);
  border-bottom: 2px solid var(--yellow);
  transform: rotate(45deg) translate(-2px, -2px);
  transition: transform .2s var(--ease);
}
.page-disclaimer .dis-quote[open] .dis-quote-chev {
  transform: rotate(-135deg) translate(-2px, -2px);
}
.page-disclaimer .dis-quote-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px 28px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}
.page-disclaimer .dis-quote-list li {
  position: relative;
  padding-left: 24px;
  font-size: .94rem;
  line-height: 1.75;
  color: var(--text);
}
.page-disclaimer .dis-quote-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .66em;
  width: 9px;
  height: 9px;
  background: var(--yellow);
  transform: rotate(45deg);
}

/* ---- 页脚前入口横条 ---- */
.page-disclaimer .dis-entry {
  margin-top: clamp(18px, 3vw, 30px);
  border-top: 1px solid var(--line);
  background: linear-gradient(90deg, rgba(47, 214, 196, .14), rgba(11, 18, 48, 0) 66%);
}
.page-disclaimer .dis-entry-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px 30px;
  padding-top: clamp(22px, 3.2vw, 34px);
  padding-bottom: clamp(22px, 3.2vw, 34px);
}
.page-disclaimer .dis-entry-text {
  margin: 0;
  max-width: 52ch;
  font-size: .95rem;
  line-height: 1.78;
  color: var(--text);
}

/* ---- 响应式 ---- */
@media (min-width: 720px) {
  .page-disclaimer .dis-quote-list {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 880px) {
  .page-disclaimer .dis-mast-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    align-items: center;
  }
  .page-disclaimer .dis-body {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .dis-index a,
  .page-disclaimer .breadcrumb a,
  .page-disclaimer .dis-quote-chev {
    transition: none;
  }
}
</main>