.page-disclaimer {
  --pd-card-bg: rgba(18, 61, 50, 0.55);
  --pd-card-bg-hover: rgba(31, 92, 74, 0.48);
  --pd-body: rgba(242, 247, 241, 0.82);
  --pd-gap: clamp(0.85rem, 2vw, 1.35rem);
  position: relative;
  padding-bottom: clamp(3rem, 6vw, 5rem);
}

.page-disclaimer [id] {
  scroll-margin-top: 6.5rem;
}

.page-disclaimer .breadcrumb {
  padding-block: clamp(1rem, 2.5vw, 1.6rem) 0;
}

/* ── Hero ───────────────────────────────────────────── */
.page-disclaimer .usage-hero {
  position: relative;
  padding-block: clamp(1.25rem, 3vw, 2.25rem) clamp(2rem, 4vw, 3rem);
  overflow: hidden;
}

.page-disclaimer .usage-hero::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -12%;
  width: min(540px, 76vw);
  height: min(540px, 76vw);
  background: radial-gradient(circle at center, rgba(45, 226, 197, 0.14), transparent 68%);
  pointer-events: none;
}

.page-disclaimer .usage-hero__grid {
  position: relative;
  display: grid;
  gap: clamp(1.5rem, 3.5vw, 2.75rem);
  grid-template-columns: minmax(0, 1fr);
}

.page-disclaimer .usage-hero__copy .display {
  margin: 0.6rem 0 1rem;
  font-size: clamp(2rem, 5.4vw, 3.4rem);
  line-height: 1.08;
  letter-spacing: -0.025em;
  font-weight: 800;
  color: var(--paper);
}

.page-disclaimer .usage-hero__copy .lede {
  max-width: 44ch;
  margin: 0;
  color: var(--pd-body);
}

.page-disclaimer .usage-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.75rem;
  margin: 1.5rem 0 0;
  padding: 1rem 0 0;
  list-style: none;
  border-top: 1px solid var(--line);
  font-size: 0.85rem;
  color: var(--mute);
}

.page-disclaimer .usage-hero__facts .mono {
  display: inline-block;
  margin-right: 0.4rem;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--cyan);
}

.page-disclaimer .usage-hero__figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-organic);
  background: var(--ink-900);
  overflow: hidden;
}

.page-disclaimer .usage-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 2 / 1;
}

/* ── 快速索引条 ─────────────────────────────────────── */
.page-disclaimer .usage-index {
  border-block: 1px solid var(--line);
  background: var(--ink-900);
}

.page-disclaimer .usage-index ol {
  display: flex;
  gap: 0.4rem;
  margin: 0;
  padding: 0.6rem 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.page-disclaimer .usage-index a {
  display: inline-flex;
  align-items: baseline;
  gap: 0.45rem;
  padding: 0.5rem 0.7rem;
  border: 1px solid transparent;
  border-radius: var(--radius-small);
  color: var(--mute);
  font-size: 0.84rem;
  line-height: 1.3;
  white-space: nowrap;
  text-decoration: none;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-disclaimer .usage-index a .mono {
  color: var(--cyan);
  font-size: 0.76rem;
  letter-spacing: 0.05em;
}

.page-disclaimer .usage-index a:hover,
.page-disclaimer .usage-index a:focus-visible {
  color: var(--cyan-soft);
  border-color: var(--cyan);
  background: rgba(45, 226, 197, 0.08);
  outline: none;
}

/* ── 规则卡 ─────────────────────────────────────────── */
.page-disclaimer .rule-grid {
  display: grid;
  gap: var(--pd-gap);
  grid-template-columns: minmax(0, 1fr);
  margin: clamp(1.5rem, 3vw, 2.5rem) 0 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .rule-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  padding: clamp(1.1rem, 2.2vw, 1.6rem);
  background: var(--pd-card-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius-organic);
  overflow: hidden;
  transition: border-color 0.25s var(--ease), background-color 0.25s var(--ease);
}

.page-disclaimer .rule-card::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--ember));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.35s var(--ease);
}

.page-disclaimer .rule-card:hover,
.page-disclaimer .rule-card:focus-within {
  border-color: var(--cyan);
  background: var(--pd-card-bg-hover);
}

.page-disclaimer .rule-card:hover::after,
.page-disclaimer .rule-card:focus-within::after {
  transform: scaleX(1);
}

.page-disclaimer .rule-card__num {
  display: block;
  font-size: clamp(1.45rem, 3vw, 1.9rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

.page-disclaimer .rule-card__title {
  margin: 0;
  font-size: clamp(1rem, 1.6vw, 1.12rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-disclaimer .rule-card__body {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--pd-body);
}

/* ── 场景列表 ───────────────────────────────────────── */
.page-disclaimer .scene-list {
  display: grid;
  gap: clamp(0.9rem, 2vw, 1.4rem);
  margin: clamp(1.5rem, 3vw, 2.25rem) 0 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .scene {
  display: grid;
  gap: 0.55rem 1.5rem;
  padding: clamp(1rem, 2vw, 1.5rem) 0 clamp(1rem, 2vw, 1.5rem) 1rem;
  border-top: 1px solid var(--line);
  border-left: 2px solid rgba(62, 107, 94, 0.6);
  transition: border-left-color 0.25s var(--ease);
}

.page-disclaimer .scene:hover {
  border-left-color: var(--cyan);
}

.page-disclaimer .scene__phase {
  margin: 0;
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  color: var(--ember);
  text-transform: uppercase;
}

.page-disclaimer .scene__body h3 {
  margin: 0 0 0.45rem;
  font-size: clamp(1rem, 1.7vw, 1.14rem);
  font-weight: 700;
  color: var(--paper);
  letter-spacing: -0.01em;
}

.page-disclaimer .scene__body p {
  margin: 0;
  max-width: 62ch;
  font-size: 0.94rem;
  line-height: 1.78;
  color: var(--pd-body);
}

.page-disclaimer .scene__link {
  display: inline-block;
  margin-top: 0.7rem;
  padding-bottom: 2px;
  color: var(--cyan);
  font-size: 0.88rem;
  text-decoration: none;
  background-image: linear-gradient(var(--cyan), var(--cyan));
  background-repeat: no-repeat;
  background-position: left bottom;
  background-size: 0% 1px;
  transition: background-size 0.28s var(--ease), color 0.2s var(--ease);
}

.page-disclaimer .scene__link:hover,
.page-disclaimer .scene__link:focus-visible {
  color: var(--cyan-soft);
  background-size: 100% 1px;
}

/* ── 浏览器版四步 ───────────────────────────────────── */
.page-disclaimer .browser-panel {
  display: grid;
  gap: clamp(1rem, 2.4vw, 1.6rem);
  padding: clamp(1.2rem, 3vw, 2.1rem);
  background: linear-gradient(150deg, rgba(18, 61, 50, 0.9), rgba(6, 26, 22, 0.92));
  border: 1px solid var(--line);
  border-radius: var(--radius-organic);
}

.page-disclaimer .browser-panel__head h2 {
  margin: 0.5rem 0 0;
  font-size: clamp(1.25rem, 2.8vw, 1.75rem);
  line-height: 1.24;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-disclaimer .browser-steps {
  display: grid;
  gap: 0.55rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .browser-steps li {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  padding: 0.7rem 0.9rem;
  background: rgba(6, 26, 22, 0.62);
  border: 1px solid var(--line);
  border-radius: var(--radius-small);
  font-size: 0.9rem;
  line-height: 1.55;
  color: var(--pd-body);
  transition: border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-disclaimer .browser-steps li:hover {
  border-color: var(--cyan);
  background: rgba(31, 92, 74, 0.4);
}

.page-disclaimer .browser-steps .mono {
  flex: none;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--ember);
  white-space: nowrap;
}

.page-disclaimer .browser-panel__note {
  margin: 0;
  max-width: 46ch;
  font-size: 0.88rem;
  line-height: 1.72;
  color: var(--mute);
}

.page-disclaimer .browser-panel .btn {
  justify-self: start;
}

/* ── 反馈联系 ───────────────────────────────────────── */
.page-disclaimer .help-panel {
  display: grid;
  gap: clamp(1rem, 2.4vw, 1.6rem);
  padding-top: clamp(1.25rem, 3vw, 2rem);
  border-top: 1px solid var(--line);
}

.page-disclaimer .help-panel h2 {
  margin: 0 0 0.65rem;
  font-size: clamp(1.2rem, 2.6vw, 1.6rem);
  font-weight: 800;
  letter-spacing: -0.018em;
  color: var(--paper);
}

.page-disclaimer .help-panel__copy p {
  margin: 0 0 0.75rem;
  max-width: 60ch;
  font-size: 0.93rem;
  line-height: 1.78;
  color: var(--pd-body);
}

.page-disclaimer .help-panel__meta {
  color: var(--cyan-soft);
  font-size: 0.88rem;
  letter-spacing: 0.03em;
}

.page-disclaimer .help-panel__aside {
  font-size: 0.84rem;
  color: var(--mute);
}

.page-disclaimer .help-panel__aside a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(45, 226, 197, 0.45);
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-disclaimer .help-panel__aside a:hover,
.page-disclaimer .help-panel__aside a:focus-visible {
  color: var(--cyan-soft);
  border-bottom-color: var(--cyan-soft);
}

.page-disclaimer .help-panel .btn {
  justify-self: start;
  align-self: start;
}

/* ── 响应式 ─────────────────────────────────────────── */
@media (min-width: 620px) {
  .page-disclaimer .rule-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-disclaimer .usage-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: center;
  }

  .page-disclaimer .usage-index ol {
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: 0.75rem 0;
  }

  .page-disclaimer .scene {
    grid-template-columns: 7.5rem minmax(0, 1fr);
    align-items: start;
  }

  .page-disclaimer .scene__phase {
    padding-top: 0.2rem;
  }

  .page-disclaimer .browser-panel {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    grid-template-areas:
      "head  steps"
      "note  steps"
      "cta   steps";
    align-items: start;
    column-gap: clamp(1.5rem, 3.5vw, 2.75rem);
  }

  .page-disclaimer .browser-panel__head {
    grid-area: head;
  }

  .page-disclaimer .browser-panel__note {
    grid-area: note;
  }

  .page-disclaimer .browser-panel .btn {
    grid-area: cta;
  }

  .page-disclaimer .browser-steps {
    grid-area: steps;
  }

  .page-disclaimer .help-panel {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (min-width: 1080px) {
  .page-disclaimer .rule-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .rule-card,
  .page-disclaimer .rule-card::after,
  .page-disclaimer .scene,
  .page-disclaimer .scene__link,
  .page-disclaimer .browser-steps li,
  .page-disclaimer .usage-index a {
    transition: none;
  }
}