/* ============ 使用说明页 · 专属样式 ============ */
.page-disclaimer {
  --d-hair: rgba(27, 72, 119, .52);
  --d-hair-soft: rgba(27, 72, 119, .3);
  display: block;
  background: var(--night);
  color: var(--ice);
}

/* ---------- 首屏 ---------- */
.page-disclaimer .disc-hero {
  position: relative;
  padding: clamp(18px, 3vw, 30px) 0 clamp(24px, 4vw, 40px);
  border-bottom: 1px solid var(--d-hair);
  background:
    radial-gradient(130% 100% at 8% -20%, rgba(47, 227, 200, .14), transparent 58%),
    radial-gradient(100% 84% at 96% -12%, rgba(255, 122, 24, .13), transparent 60%),
    linear-gradient(180deg, var(--blueprint) 0%, var(--night) 82%);
  overflow: hidden;
}

.page-disclaimer .disc-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(to right, rgba(27, 72, 119, .3) 0 1px, transparent 1px 64px),
    repeating-linear-gradient(to bottom, rgba(27, 72, 119, .22) 0 1px, transparent 1px 64px);
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 86%);
  mask-image: linear-gradient(180deg, #000 0%, transparent 86%);
}

.page-disclaimer .disc-hero-inner {
  position: relative;
  z-index: 1;
}

.page-disclaimer .crumbs {
  color: var(--mist);
  font-size: 13px;
}

.page-disclaimer .crumbs a {
  color: var(--mist);
  text-decoration: none;
}

.page-disclaimer .crumbs a:hover,
.page-disclaimer .crumbs a:focus-visible {
  color: var(--cyan);
}

.page-disclaimer .disc-kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: clamp(16px, 3vw, 26px) 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--mist);
}

.page-disclaimer .disc-kicker::before {
  content: "";
  width: 7px;
  height: 7px;
  flex: none;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(47, 227, 200, .16);
}

.page-disclaimer .disc-hero h1 {
  margin: 14px 0 0;
  max-width: 22em;
  font-size: clamp(29px, 6vw, 46px);
  line-height: 1.16;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--ice);
}

.page-disclaimer .disc-lede {
  margin: 16px 0 0;
  max-width: 40em;
  font-size: clamp(15.5px, 2.2vw, 17.5px);
  line-height: 1.82;
  color: var(--mist);
}

.page-disclaimer .disc-banner {
  position: relative;
  z-index: 1;
  width: min(100% - (2 * var(--gutter)), var(--shell));
  margin: clamp(22px, 4vw, 38px) auto 0;
  border: 1px solid var(--d-hair);
  background: var(--blueprint);
  overflow: hidden;
}

.page-disclaimer .disc-banner::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(6, 23, 38, 0) 46%, rgba(6, 23, 38, .78) 100%);
}

.page-disclaimer .disc-banner img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: clamp(180px, 32vw, 340px);
  object-fit: cover;
  object-position: center;
}

/* ---------- 正文双栏 ---------- */
.page-disclaimer .disc-terms {
  padding-top: clamp(30px, 5vw, 56px);
}

.page-disclaimer .disc-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 4vw, 44px);
}

/* ---------- 条款目录 ---------- */
.page-disclaimer .disc-toc {
  position: relative;
  padding: 16px 16px 14px;
  border: 1px solid var(--d-hair);
  background: var(--blueprint);
}

.page-disclaimer .disc-toc::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 14px 14px 0 0;
  border-color: var(--orange) transparent transparent transparent;
}

.page-disclaimer .disc-toc-title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--orange-soft);
}

.page-disclaimer .disc-toc a {
  display: block;
  padding: 9px 6px 9px 10px;
  border-top: 1px dashed var(--d-hair-soft);
  border-left: 2px solid transparent;
  font-size: 14px;
  line-height: 1.5;
  color: var(--mist);
  text-decoration: none;
  transition: color .2s var(--ease), border-color .2s var(--ease),
    background-color .2s var(--ease);
}

.page-disclaimer .disc-toc a:first-of-type {
  border-top: 0;
}

.page-disclaimer .disc-toc a:hover,
.page-disclaimer .disc-toc a:focus-visible {
  color: var(--ice);
  background: rgba(255, 122, 24, .08);
}

.page-disclaimer .disc-toc a[aria-current="true"] {
  color: var(--cyan);
  border-left-color: var(--cyan);
  background: rgba(47, 227, 200, .08);
}

/* ---------- 章节 ---------- */
.page-disclaimer .disc-chapter {
  padding-bottom: clamp(22px, 3.6vw, 38px);
  margin-bottom: clamp(22px, 3.6vw, 38px);
  border-bottom: 1px solid var(--d-hair-soft);
  scroll-margin-top: 120px;
}

.page-disclaimer .disc-chapter:last-child {
  padding-bottom: 0;
  margin-bottom: 0;
  border-bottom: 0;
}

.page-disclaimer .disc-chapter-head {
  display: grid;
  gap: 8px;
  margin-bottom: 14px;
}

.page-disclaimer .disc-chapter-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--orange);
}

.page-disclaimer .disc-chapter-head h2 {
  margin: 0;
  font-size: clamp(20px, 3.2vw, 27px);
  line-height: 1.3;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--ice);
}

.page-disclaimer .disc-chapter-lede {
  margin: 0;
  max-width: 40em;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 条款条目 ---------- */
.page-disclaimer .disc-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-disclaimer .disc-item {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 6px 12px;
  padding: 15px 10px 15px 8px;
  margin-left: -8px;
  border-top: 1px dashed var(--d-hair-soft);
  transition: background .22s var(--ease);
}

.page-disclaimer .disc-item:first-child {
  border-top: 0;
  padding-top: 6px;
}

.page-disclaimer .disc-item:hover,
.page-disclaimer .disc-item:focus-within {
  background: linear-gradient(90deg, rgba(47, 227, 200, .1), rgba(47, 227, 200, 0) 64%);
}

.page-disclaimer .disc-num {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.65;
  letter-spacing: .06em;
  color: var(--orange);
  transition: color .22s var(--ease);
}

.page-disclaimer .disc-item:hover .disc-num,
.page-disclaimer .disc-item:focus-within .disc-num {
  color: var(--cyan);
}

.page-disclaimer .disc-item-body h3 {
  margin: 0 0 6px;
  font-size: 16.5px;
  line-height: 1.45;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ice);
}

.page-disclaimer .disc-item-body p {
  margin: 0;
  max-width: 38em;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--mist);
}

.page-disclaimer .disc-item-body a,
.page-disclaimer .disc-chapter-lede a,
.page-disclaimer .disc-feedback a:not(.btn) {
  color: var(--ice);
  text-decoration: underline;
  text-decoration-color: var(--cyan);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color .2s var(--ease);
}

.page-disclaimer .disc-item-body a:hover,
.page-disclaimer .disc-item-body a:focus-visible,
.page-disclaimer .disc-chapter-lede a:hover,
.page-disclaimer .disc-chapter-lede a:focus-visible {
  color: var(--cyan);
}

.page-disclaimer .disc-note {
  margin: 10px 0 0;
  padding-left: 12px;
  border-left: 2px solid var(--cyan);
  max-width: 36em;
  font-size: 14px;
  line-height: 1.72;
  color: var(--mist);
}

/* ---------- 结尾反馈 ---------- */
.page-disclaimer .disc-feedback {
  padding: clamp(16px, 2.6vw, 22px);
  border: 1px solid var(--d-hair);
  border-left: 3px solid var(--orange);
  background: linear-gradient(135deg, rgba(14, 42, 71, .92), rgba(6, 23, 38, .92));
}

.page-disclaimer .disc-feedback p {
  margin: 0;
  max-width: 40em;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--mist);
}

.page-disclaimer .disc-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

/* ---------- 断点 ---------- */
@media (min-width: 880px) {
  .page-disclaimer .disc-layout {
    grid-template-columns: minmax(0, 210px) minmax(0, 1fr);
    gap: clamp(30px, 5vw, 64px);
    align-items: start;
  }

  .page-disclaimer .disc-toc {
    position: sticky;
    top: 116px;
  }

  .page-disclaimer .disc-item {
    grid-template-columns: 46px minmax(0, 1fr);
    padding: 17px 12px 17px 10px;
    margin-left: -10px;
  }
}

@media (max-width: 480px) {
  .page-disclaimer .disc-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }

  .page-disclaimer .disc-num {
    font-size: 12px;
    letter-spacing: .1em;
  }

  .page-disclaimer .disc-actions .btn {
    width: 100%;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .disc-item,
  .page-disclaimer .disc-num,
  .page-disclaimer .disc-toc a {
    transition: none;
  }
}