.page-disclaimer {
  --disc-accent: var(--c-blue);
  --disc-soft: var(--c-blue-soft);
  position: relative;
  isolation: isolate;
  overflow-x: clip;
}

.page-disclaimer::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    radial-gradient(ellipse at top, rgba(176, 38, 255, 0.07), transparent 60%),
    linear-gradient(var(--c-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--c-line) 1px, transparent 1px);
  background-size: auto, 48px 48px, 48px 48px;
  pointer-events: none;
}

.page-disclaimer .breadcrumb {
  padding-top: 1.5rem;
}

/* ===== 首屏 ===== */
.disclaimer-hero {
  padding: 2.5rem 0 3rem;
}

.disclaimer-hero__grid {
  display: grid;
  gap: 2rem;
}

.disclaimer-hero__rail {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.5rem;
  border-left: 3px solid var(--c-blue);
  padding-left: 1rem;
}

.disclaimer-hero__doc {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  color: var(--c-gray);
}

.disclaimer-hero__line {
  width: 80px;
  height: 1px;
  background: var(--c-blue);
  opacity: 0.6;
  margin-top: 0.25rem;
}

.disclaimer-hero__title {
  font-family: var(--font-head);
  font-size: clamp(2rem, 5vw, 3.6rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin: 0 0 1.25rem;
  text-shadow: 0 0 42px rgba(176, 38, 255, 0.28);
}

.disclaimer-hero__lead {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--c-gray);
  max-width: 56ch;
  margin: 0 0 1.5rem;
}

.disclaimer-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* ===== 章节导航 ===== */
.disclaimer-navcards {
  padding: 0 0 3rem;
}

.disclaimer-navcards__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.875rem;
}

.disclaimer-navcard {
  --nav-accent: var(--c-blue);
  display: flex;
  gap: 0.875rem;
  align-items: flex-start;
  background: var(--c-card);
  border: 1px solid var(--c-line);
  padding: 1.1rem;
  text-decoration: none;
  color: var(--c-white);
  transition:
    border-color var(--dur) var(--ease),
    transform var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}

.disclaimer-navcard:nth-child(1) { --nav-accent: var(--c-blue); }
.disclaimer-navcard:nth-child(2) { --nav-accent: var(--c-purple); }
.disclaimer-navcard:nth-child(3) { --nav-accent: var(--c-orange); }
.disclaimer-navcard:nth-child(4) { --nav-accent: var(--c-green); }

.disclaimer-navcard:hover {
  border-color: var(--nav-accent);
  transform: translateY(-3px);
  box-shadow: 0 0 0 1px var(--nav-accent), 0 8px 24px rgba(0, 0, 0, 0.3);
}

.disclaimer-navcard__num {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
  color: var(--nav-accent);
  flex: 0 0 auto;
}

.disclaimer-navcard__body {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  min-width: 0;
}

.disclaimer-navcard__title {
  font-family: var(--font-head);
  font-size: 0.92rem;
  letter-spacing: 0.02em;
  line-height: 1.3;
}

.disclaimer-navcard__desc {
  font-size: 0.78rem;
  color: var(--c-gray);
  line-height: 1.4;
}

/* ===== 章节通用 ===== */
.disclaimer-chapter {
  padding: 3rem 0;
  border-top: 1px solid var(--c-line);
}

.disclaimer-chapter--ip {
  --disc-accent: var(--c-purple);
  --disc-soft: var(--c-purple-soft);
}

.disclaimer-chapter--limit {
  --disc-accent: var(--c-orange);
  --disc-soft: var(--c-orange-soft);
}

.disclaimer-chapter--support {
  --disc-accent: var(--c-green);
  --disc-soft: rgba(0, 230, 118, 0.08);
}

.disclaimer-chapter__head {
  display: grid;
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.disclaimer-chapter__badge {
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  background: var(--disc-soft);
  border: 1px solid var(--disc-accent);
  color: var(--disc-accent);
  clip-path: polygon(0 0, 100% 0, 100% 78%, 82% 100%, 0 100%);
}

.disclaimer-chapter__badge svg {
  display: block;
}

.disclaimer-chapter__head .section-label {
  margin-top: 0.75rem;
}

.page-disclaimer .section__side {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.25rem;
}

/* ===== 条款列表 ===== */
.disclaimer-list {
  display: grid;
  gap: 0.875rem;
}

.disclaimer-item {
  background: rgba(16, 16, 31, 0.72);
  border: 1px solid var(--c-line);
  border-left: 3px solid var(--disc-accent);
  transition: background var(--dur) var(--ease);
}

.disclaimer-item[open] {
  background: rgba(16, 16, 31, 0.94);
}

.disclaimer-item__head {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  padding: 1.05rem 1rem;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-size: 0.92rem;
  line-height: 1.4;
  color: var(--c-white);
}

.disclaimer-item__head::-webkit-details-marker {
  display: none;
}

.disclaimer-item__head::marker {
  display: none;
}

.disclaimer-item__num {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  background: var(--disc-accent);
  color: var(--c-black);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
}

.disclaimer-item__title {
  flex: 1 1 auto;
  min-width: 0;
}

.disclaimer-item__chevron {
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  color: var(--c-gray);
  transition:
    transform var(--dur) var(--ease),
    color var(--dur) var(--ease);
}

.disclaimer-item[open] .disclaimer-item__chevron {
  transform: rotate(180deg);
  color: var(--disc-accent);
}

.disclaimer-item__body {
  padding: 0 1rem 1rem 4.25rem;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--c-gray);
}

.disclaimer-item__body p {
  margin: 0 0 0.75rem;
}

.disclaimer-item__body p:last-child {
  margin-bottom: 0;
}

.disclaimer-item__body a {
  color: var(--disc-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  word-break: break-word;
}

.disclaimer-note {
  margin-top: 1.5rem;
}

/* ===== 联系支持 ===== */
.disclaimer-contact {
  display: grid;
  gap: 1.5rem;
}

.disclaimer-contact__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.disclaimer-contact__panel {
  background: var(--c-card);
  border: 1px solid var(--c-line);
  padding: 1.5rem;
}

.disclaimer-contact__list {
  list-style: none;
  margin: 0 0 1.25rem;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.disclaimer-contact__li {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--c-line);
}

.disclaimer-contact__li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.disclaimer-contact__label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--c-gray);
}

.disclaimer-contact__value {
  font-family: var(--font-mono);
  font-size: 0.98rem;
  color: var(--c-white);
  word-break: break-all;
}

.disclaimer-contact__note {
  font-size: 0.9rem;
  color: var(--c-gray);
  line-height: 1.7;
  margin: 0 0 1.25rem;
}

.disclaimer-contact__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.disclaimer-contact__extra {
  font-size: 0.85rem;
  color: var(--c-gray);
  line-height: 1.6;
}

.disclaimer-contact__extra a {
  color: var(--c-blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ===== 备案号滚动条 ===== */
.disclaimer-ticker {
  margin-top: 3rem;
  overflow: hidden;
  background: rgba(13, 13, 24, 0.95);
  border-top: 1px solid var(--c-line);
  border-bottom: 1px solid var(--c-line);
}

.disclaimer-ticker__track {
  display: flex;
  white-space: nowrap;
  animation: disclaimer-roll 24s linear infinite;
}

.disclaimer-ticker__track > span {
  flex: 0 0 auto;
  padding: 0.75rem 0;
  padding-right: 2.5rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: var(--c-gray);
}

@keyframes disclaimer-roll {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-33.3333%);
  }
}

@media (prefers-reduced-motion: reduce) {
  .disclaimer-ticker__track {
    animation: none;
    flex-wrap: wrap;
  }
}

/* ===== 桌面端 ===== */
@media (min-width: 992px) {
  .disclaimer-hero {
    padding: 4rem 0 4.5rem;
  }

  .disclaimer-hero__grid {
    grid-template-columns: 280px 1fr;
    gap: 3rem;
  }

  .disclaimer-hero__rail {
    border-left-width: 4px;
    padding-left: 1.25rem;
  }

  .disclaimer-hero__title {
    max-width: 12em;
  }

  .disclaimer-navcards {
    padding-bottom: 4rem;
  }

  .disclaimer-navcards__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1.25rem;
  }

  .disclaimer-navcard {
    padding: 1.4rem 1.25rem;
  }

  .disclaimer-chapter {
    padding: 4.5rem 0;
  }

  .disclaimer-chapter__head {
    grid-template-columns: 280px 1fr;
    gap: 3rem;
    margin-bottom: 2.5rem;
  }

  .disclaimer-item__head {
    padding: 1.25rem 1.5rem;
  }

  .disclaimer-item__body {
    padding: 0 1.5rem 1.5rem 4.75rem;
  }

  .disclaimer-contact {
    grid-template-columns: 5fr 7fr;
    gap: 2rem;
    align-items: stretch;
  }

  .disclaimer-contact__media {
    order: 1;
  }

  .disclaimer-contact__panel {
    order: 2;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }
}

@media (min-width: 600px) {
  .disclaimer-contact__li {
    flex-direction: row;
    justify-content: space-between;
    align-items: baseline;
    gap: 1.5rem;
  }

  .disclaimer-contact__value {
    text-align: right;
  }
}