.page-disclaimer {
  --rule-rail: 6rem;
  --rule-pad-y: clamp(2.5rem, 7vw, 5rem);
  display: block;
  background: var(--night-indigo);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.75;
  overflow-x: clip;
}

.page-disclaimer a:focus-visible,
.page-disclaimer summary:focus-visible {
  outline: 2px solid var(--electric-blue);
  outline-offset: 3px;
  border-radius: 3px;
}

/* ---------- 面包屑 ---------- */
.rules-crumb {
  background: var(--deep-teal);
  border-bottom: 1px solid rgba(183, 170, 217, .16);
  padding: .85rem 0;
}

.rules-crumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .08em;
  color: var(--ink-muted);
}

.rules-crumb li + li::before {
  content: "/";
  margin-right: .5rem;
  color: rgba(168, 85, 247, .75);
}

.rules-crumb a {
  color: var(--electric-blue);
  text-decoration: none;
  transition: color 180ms ease;
}

.rules-crumb a:hover {
  color: var(--neon-purple);
}

/* ---------- 首屏 ---------- */
.rules-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(2.5rem, 8vw, 5.5rem) 0 clamp(2rem, 5vw, 3.5rem);
  background-image:
    radial-gradient(circle at 84% 16%, rgba(168, 85, 247, .3), transparent 54%),
    radial-gradient(circle at 8% 88%, rgba(53, 196, 240, .16), transparent 48%),
    linear-gradient(180deg, var(--night-indigo), var(--night-indigo));
}

.rules-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.75rem, 5vw, 3.5rem);
  align-items: center;
}

.rules-hero__kicker {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  margin: 0 0 1.25rem;
  padding: .34rem .85rem;
  border: 1px solid rgba(255, 198, 77, .38);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .18em;
  color: var(--gold);
}

.rules-hero h1 {
  margin: 0 0 1.1rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.3rem, 8.5vw, 4.5rem);
  line-height: .98;
  letter-spacing: -0.025em;
  color: var(--ink);
}

.rules-hero h1 span {
  display: block;
  margin-top: .35rem;
  font-weight: 200;
  font-size: clamp(1.1rem, 3vw, 1.7rem);
  line-height: 1.25;
  letter-spacing: .01em;
  color: var(--ink-muted);
}

.rules-hero__lead {
  max-width: 34em;
  margin: 0;
  color: var(--ink-muted);
  font-size: 1rem;
  line-height: 1.78;
}

.rules-hero__figure {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid rgba(168, 85, 247, .42);
  border-radius: var(--radius);
  box-shadow: 0 24px 64px -30px rgba(168, 85, 247, .8);
}

.rules-hero__figure::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    0deg,
    rgba(255, 255, 255, .05) 0 1px,
    transparent 1px 4px
  );
}

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

/* ---------- 条款分区 ---------- */
.rule-section {
  position: relative;
  padding: var(--rule-pad-y) 0;
}

.rule-section--indigo { background: var(--night-indigo); }
.rule-section--teal { background: var(--deep-teal); }
.rule-section--wine { background: var(--wine); }

.rule-section + .rule-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  opacity: .72;
  background-image: repeating-linear-gradient(
    90deg,
    rgba(168, 85, 247, .8) 0 3px,
    transparent 3px 10px
  );
}

.rule-section__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: .85rem;
}

.rule-rail {
  display: flex;
  align-items: center;
  gap: .75rem;
}

.rule-rail::after {
  content: "";
  flex: 1;
  height: 1px;
  background-image: repeating-linear-gradient(
    90deg,
    rgba(168, 85, 247, .55) 0 2px,
    transparent 2px 7px
  );
}

.rule-rail__num {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: clamp(1.85rem, 6vw, 3.4rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--neon-purple);
  opacity: .62;
}

.rule-section__body {
  min-width: 0;
}

.rule-section__title {
  margin: 0 0 .8rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.4rem, 3.8vw, 2.2rem);
  line-height: 1.14;
  letter-spacing: -0.015em;
  color: var(--ink);
}

.rule-section__title::after {
  content: "";
  display: block;
  width: 3.25rem;
  height: 3px;
  margin-top: .7rem;
  border-radius: 2px;
  background-image: linear-gradient(90deg, var(--neon-purple), var(--electric-blue));
}

.rule-section__lead {
  max-width: 34em;
  margin: 0 0 1.5rem;
  color: var(--ink-muted);
  line-height: 1.78;
}

/* ---------- 条款列表 ---------- */
.rule-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .8rem;
}

.rule-list > li {
  position: relative;
  padding: .95rem 1.1rem;
  background: rgba(36, 21, 70, .6);
  border-left: 3px solid rgba(53, 196, 240, .55);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--ink);
  font-size: .97rem;
  line-height: 1.72;
}

.rule-list > li.is-key {
  background: rgba(58, 16, 36, .55);
  border-left-color: var(--gold);
  box-shadow: inset 0 0 0 1px rgba(255, 198, 77, .16);
}

.rule-list a {
  color: var(--laser-pink);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.rule-list a:hover {
  color: var(--gold);
}

.rule-more {
  margin-top: .55rem;
}

.rule-more > summary {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  padding: .15rem 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .1em;
  color: var(--electric-blue);
}

.rule-more > summary::-webkit-details-marker {
  display: none;
}

.rule-more > summary::before {
  content: "+";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.05rem;
  height: 1.05rem;
  border: 1px solid rgba(53, 196, 240, .6);
  border-radius: 3px;
  font-size: .7rem;
  line-height: 1;
  transition: transform 180ms ease, border-color 180ms ease, color 180ms ease;
}

.rule-more[open] > summary::before {
  transform: rotate(45deg);
  border-color: var(--gold);
  color: var(--gold);
}

.rule-more > p {
  max-width: 34em;
  margin: .5rem 0 0;
  padding-left: 1.5rem;
  color: var(--ink-muted);
  font-size: .92rem;
  line-height: 1.72;
}

/* ---------- 处理流程 ---------- */
.rule-flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: .9rem;
}

.rule-flow__step {
  position: relative;
  overflow: hidden;
  padding: 1.15rem 1.1rem 1.5rem;
  background: rgba(21, 11, 46, .66);
  border: 1px solid rgba(168, 85, 247, .32);
  border-radius: var(--radius-sm);
}

.rule-flow__step::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  height: 2px;
  width: var(--step-fill, 40%);
  background-image: linear-gradient(90deg, var(--neon-purple), var(--electric-blue));
}

.rule-flow__step:nth-child(1) { --step-fill: 34%; }
.rule-flow__step:nth-child(2) { --step-fill: 67%; }
.rule-flow__step:nth-child(3) { --step-fill: 100%; }

.rule-flow__num {
  display: block;
  margin-bottom: .7rem;
  font-family: var(--font-mono);
  font-size: 1.45rem;
  font-weight: 500;
  line-height: 1;
  color: var(--gold);
}

.rule-flow__title {
  margin: 0 0 .5rem;
  font-family: var(--font-display);
  font-size: 1.12rem;
  font-weight: 800;
  letter-spacing: .01em;
  color: var(--ink);
}

.rule-flow__step p {
  margin: 0;
  color: var(--ink-muted);
  font-size: .94rem;
  line-height: 1.72;
}

/* ---------- 联系方式 ---------- */
.rule-contact {
  list-style: none;
  margin: 0 0 1.4rem;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: .75rem;
}

.rule-contact > li {
  padding: 1rem 1.05rem;
  background: rgba(36, 21, 70, .6);
  border-top: 2px solid rgba(168, 85, 247, .55);
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
}

.rule-contact__key {
  display: block;
  margin-bottom: .4rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .16em;
  color: var(--electric-blue);
}

.rule-contact__value {
  display: block;
  color: var(--ink);
  font-size: .95rem;
  line-height: 1.65;
  overflow-wrap: anywhere;
}

.rule-contact__note {
  max-width: 34em;
  margin: 0;
  padding: .95rem 1.1rem;
  border-left: 3px solid var(--electric-blue);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: rgba(53, 196, 240, .08);
  color: var(--ink-muted);
  font-size: .94rem;
  line-height: 1.75;
}

/* ---------- 底部返回条 ---------- */
.rules-return {
  position: sticky;
  bottom: 0;
  z-index: 30;
  border-top: 1px solid rgba(168, 85, 247, .4);
  background: rgba(6, 34, 43, .95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.rules-return__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: .6rem 1rem;
  padding-top: .75rem;
  padding-bottom: .75rem;
}

.rules-return__text {
  margin: 0;
  font-size: .88rem;
  line-height: 1.5;
  color: var(--ink-muted);
}

.rules-return__link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 1.15rem;
  border-radius: 999px;
  background-image: linear-gradient(120deg, var(--neon-purple), var(--electric-blue));
  color: var(--night-indigo);
  font-size: .9rem;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
  transition: filter 180ms ease, transform 180ms ease;
}

.rules-return__link:hover {
  filter: brightness(1.14);
  transform: translateY(-2px);
}

/* ---------- 响应式 ---------- */
@media (min-width: 48rem) {
  .rule-flow {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
  }

  .rule-contact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: .85rem;
  }

  .rule-list > li {
    padding: 1rem 1.25rem;
  }
}

@media (min-width: 56rem) {
  .rule-section__grid {
    grid-template-columns: var(--rule-rail) minmax(0, 1fr);
    gap: clamp(1.5rem, 4vw, 3.25rem);
  }

  .rule-rail {
    display: block;
    padding-top: .35rem;
  }

  .rule-rail::after {
    display: none;
  }

  .rule-rail__num {
    font-size: clamp(2.4rem, 4vw, 3.6rem);
  }
}

@media (min-width: 60rem) {
  .rules-hero__inner {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  }

  .rules-hero__lead {
    font-size: 1.05rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer *,
  .page-disclaimer *::before,
  .page-disclaimer *::after {
    transition: none !important;
    animation: none !important;
  }
}