/* ================= 使用指引 /usage/ ================= */
.page-disclaimer {
  display: block;
}

/* ---------- 顶部视觉带 ---------- */
.page-disclaimer .guide-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--c-bg);
  border-bottom: 1px solid var(--c-line);
}

.page-disclaimer .guide-hero__img {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: cover;
  object-position: center 40%;
  opacity: 0.3;
  filter: saturate(0.55) contrast(1.05);
}

.page-disclaimer .guide-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(3, 12, 9, 0.52) 0%, rgba(7, 26, 20, 0.9) 60%, var(--c-bg) 100%),
    repeating-linear-gradient(90deg, rgba(201, 255, 63, 0.05) 0 1px, transparent 1px 88px);
}

.page-disclaimer .guide-hero__body {
  padding-top: 32px;
  padding-bottom: 52px;
}

.page-disclaimer .guide-hero .breadcrumb {
  margin: 0 0 30px;
}

.page-disclaimer .guide-hero__title {
  margin: 16px 0 0;
  max-width: 22em;
}

.page-disclaimer .guide-hero__lead {
  max-width: 62ch;
  margin: 22px 0 0;
  font-size: 17px;
  line-height: 1.78;
  color: var(--c-paper);
  opacity: 0.84;
}

.page-disclaimer .guide-meta {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 36px 0 0;
  padding: 0;
  list-style: none;
  background: var(--c-line);
  border: 1px solid var(--c-line);
}

.page-disclaimer .guide-meta li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 12px 14px;
  background: rgba(13, 42, 34, 0.82);
}

.page-disclaimer .guide-meta__k {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-mute);
  white-space: nowrap;
}

.page-disclaimer .guide-meta__v {
  font-family: var(--f-mono);
  font-size: 14px;
  color: var(--c-lime);
}

/* ---------- 规则章节 ---------- */
.page-disclaimer .guide-sec {
  border-bottom: 1px solid var(--c-line);
}

.page-disclaimer .guide-sec__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  padding-top: 42px;
  padding-bottom: 46px;
}

.page-disclaimer .guide-sec__aside {
  display: flex;
  align-items: baseline;
  gap: 16px;
  min-width: 0;
}

.page-disclaimer .guide-sec__num {
  font-family: var(--f-mono);
  font-size: 28px;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--c-lime);
}

.page-disclaimer .guide-sec__mark {
  font-size: 12px;
  letter-spacing: 0.28em;
  color: var(--c-mute);
}

.page-disclaimer .guide-sec__main {
  min-width: 0;
}

.page-disclaimer .guide-sec__lead {
  max-width: 64ch;
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--c-mute);
}

/* ---------- 编号条带 ---------- */
.page-disclaimer .rule-list {
  margin: 28px -12px 0;
  padding: 0;
  list-style: none;
  counter-reset: rule;
  border-top: 1px solid var(--c-line);
}

.page-disclaimer .rule-list__item {
  position: relative;
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 4px 12px;
  counter-increment: rule;
  padding: 18px 12px;
  border-bottom: 1px solid var(--c-line);
  transition: background-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.page-disclaimer .rule-list__item::before {
  content: counter(rule, decimal-leading-zero);
  font-family: var(--f-mono);
  font-size: 13px;
  line-height: 1.9;
  letter-spacing: 0.06em;
  color: var(--c-lime-deep);
  transition: color 0.2s var(--ease);
}

.page-disclaimer .rule-list__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-paper);
  overflow-wrap: break-word;
}

.page-disclaimer .rule-list__text strong {
  font-weight: 700;
  color: var(--c-lime);
}

.page-disclaimer .rule-list__text a {
  color: var(--c-paper);
  text-decoration: none;
  border-bottom: 1px solid var(--c-lime-deep);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-disclaimer .rule-list__text a:hover {
  color: var(--c-lime);
  border-bottom-color: var(--c-lime);
}

.page-disclaimer .rule-list__item::after {
  content: attr(data-chapter);
  position: absolute;
  top: 21px;
  right: 14px;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--c-amber);
  opacity: 0;
  transform: translateX(8px);
  transition: opacity 0.2s var(--ease), transform 0.2s var(--ease);
  pointer-events: none;
}

.page-disclaimer .rule-list__item:hover {
  background: var(--c-panel);
  box-shadow: inset 2px 0 0 var(--c-lime);
}

.page-disclaimer .rule-list__item:hover::before {
  color: var(--c-lime);
}

/* ---------- 页尾反馈路径 ---------- */
.page-disclaimer .guide-flow {
  background: var(--c-void);
}

.page-disclaimer .guide-flow__inner {
  padding-top: 48px;
  padding-bottom: 56px;
}

.page-disclaimer .guide-flow__title {
  margin: 14px 0 0;
  max-width: 26em;
}

.page-disclaimer .guide-flow__lead {
  max-width: 60ch;
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-mute);
}

.page-disclaimer .flow {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
  background: var(--c-line);
  border: 1px solid var(--c-line);
}

.page-disclaimer .flow__step {
  min-width: 0;
  background: var(--c-panel);
}

.page-disclaimer .flow__link {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 18px 16px 22px;
  color: inherit;
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: background-color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-disclaimer .flow__link:hover,
.page-disclaimer .flow__link:focus-visible {
  background: var(--c-bg);
  border-left-color: var(--c-lime);
}

.page-disclaimer .flow__num {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--c-lime);
}

.page-disclaimer .flow__label {
  display: block;
  margin-top: 14px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--c-paper);
}

.page-disclaimer .flow__note {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--c-mute);
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-disclaimer .guide-meta {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-disclaimer .guide-hero__body {
    padding-top: 44px;
    padding-bottom: 64px;
  }
}

@media (min-width: 780px) {
  .page-disclaimer .flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-disclaimer .guide-sec__inner {
    grid-template-columns: 196px minmax(0, 1fr);
    gap: 0 56px;
    padding-top: 62px;
    padding-bottom: 66px;
  }

  .page-disclaimer .guide-sec__aside {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    position: sticky;
    top: 28px;
    align-self: start;
  }

  .page-disclaimer .guide-sec__mark {
    writing-mode: vertical-rl;
  }

  .page-disclaimer .rule-list__item {
    padding-right: 130px;
  }

  .page-disclaimer .rule-list__item:hover::after,
  .page-disclaimer .rule-list__item:focus-within::after {
    opacity: 1;
    transform: translateX(0);
  }

  .page-disclaimer .guide-hero__lead {
    font-size: 18px;
  }
}

@media (max-width: 400px) {
  .page-disclaimer .rule-list__item {
    grid-template-columns: 32px minmax(0, 1fr);
    gap: 2px 10px;
  }
  .page-disclaimer .flow__link {
    padding: 16px 14px 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .rule-list__item,
  .page-disclaimer .rule-list__item::before,
  .page-disclaimer .rule-list__item::after,
  .page-disclaimer .flow__link {
    transition: none;
  }
  .page-disclaimer .rule-list__item::after {
    transform: none;
  }
}