.page-disclaimer {
  --disclaimer-warm: rgba(255, 122, 26, 0.12);
  --disclaimer-panel: rgba(11, 30, 58, 0.55);
  --disclaimer-text: rgba(244, 248, 255, 0.84);
  background-color: var(--ink-900);
  color: var(--white);
  overflow-x: hidden;
}

.page-disclaimer .txt-link {
  color: var(--cyan);
  text-decoration: underline;
  text-decoration-color: rgba(41, 240, 212, 0.4);
  text-underline-offset: 3px;
}

.page-disclaimer .txt-link:hover,
.page-disclaimer .txt-link:focus-visible {
  text-decoration-color: var(--cyan);
}

/* ---------- 页首 ---------- */
.page-disclaimer .usage-head {
  position: relative;
  padding: 22px 0 42px;
}

.page-disclaimer .usage-head::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    repeating-linear-gradient(90deg, rgba(147, 168, 196, 0.07) 0 1px, transparent 1px 68px),
    radial-gradient(120% 90% at 82% 0%, rgba(41, 240, 212, 0.16), transparent 62%);
  -webkit-mask-image: linear-gradient(180deg, #000 52%, transparent);
  mask-image: linear-gradient(180deg, #000 52%, transparent);
}

.page-disclaimer .usage-head__grid {
  position: relative;
  display: grid;
  gap: 30px;
  align-items: center;
}

.page-disclaimer .usage-head__text h1 {
  margin: 10px 0 0;
  font-size: clamp(28px, 6.4vw, 50px);
  line-height: 1.16;
  font-weight: 800;
  letter-spacing: -0.01em;
  max-width: 18em;
}

.page-disclaimer .usage-head__text .lede {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--disclaimer-text);
  max-width: 40em;
}

.page-disclaimer .usage-head__quick {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.page-disclaimer .usage-head__meta {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin: 24px 0 0;
  padding: 14px 0 0;
  border-top: 1px solid var(--line-soft);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-disclaimer .usage-head__meta li {
  display: flex;
  align-items: baseline;
  gap: 7px;
}

.page-disclaimer .usage-head__meta span {
  color: var(--cyan);
  font-size: 16px;
  font-weight: 700;
}

.page-disclaimer .usage-head__figure {
  position: relative;
  margin: 0;
  border-radius: var(--r-l);
  overflow: hidden;
  border: 1px solid var(--line);
  background: linear-gradient(150deg, var(--ink-700), var(--ink-900));
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
}

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

.page-disclaimer .usage-head__figure::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    repeating-linear-gradient(180deg, rgba(6, 16, 31, 0.28) 0 1px, transparent 1px 5px),
    radial-gradient(90% 70% at 70% 20%, rgba(41, 240, 212, 0.18), transparent 70%);
}

/* ---------- 主体分屏 ---------- */
.page-disclaimer .usage-body {
  display: grid;
  gap: 26px;
  padding: 4px 0 68px;
}

.page-disclaimer .usage-toc {
  border: 1px solid var(--line);
  border-radius: var(--r-m);
  padding: 16px 16px 18px;
  background: linear-gradient(160deg, rgba(14, 53, 64, 0.7), rgba(11, 30, 58, 0.52));
}

.page-disclaimer .usage-toc .annotation {
  margin: 0;
  color: var(--cyan);
}

.page-disclaimer .usage-toc__list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0 0 4px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.page-disclaimer .usage-toc__list li {
  flex: 0 0 auto;
}

.page-disclaimer .usage-toc__list a {
  display: flex;
  align-items: baseline;
  gap: 8px;
  white-space: nowrap;
  padding: 8px 10px;
  border-radius: var(--r-s);
  border-bottom: 2px solid transparent;
  font-size: 14px;
  color: var(--mist);
  text-decoration: none;
  transition: color 0.18s var(--ease), background-color 0.18s var(--ease),
    border-color 0.18s var(--ease);
}

.page-disclaimer .usage-toc__list a .mono {
  font-size: 11px;
  color: rgba(41, 240, 212, 0.7);
  letter-spacing: 0.08em;
}

.page-disclaimer .usage-toc__list a:hover,
.page-disclaimer .usage-toc__list a:focus-visible {
  color: var(--white);
  background: rgba(41, 240, 212, 0.1);
  border-bottom-color: var(--cyan);
}

.page-disclaimer .usage-toc__tip {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--mist);
  border-top: 1px dashed var(--line-soft);
  padding-top: 12px;
}

/* ---------- 规则块 ---------- */
.page-disclaimer .rule-block {
  position: relative;
  padding: 24px 0 30px;
  border-top: 1px solid var(--line-soft);
}

.page-disclaimer .rule-block:first-child {
  border-top: none;
  padding-top: 6px;
}

.page-disclaimer .rule-block__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.page-disclaimer .rule-block__num {
  font-size: clamp(26px, 5.6vw, 36px);
  font-weight: 800;
  line-height: 1;
  color: rgba(41, 240, 212, 0.45);
  letter-spacing: 0.02em;
}

.page-disclaimer .rule-block__title {
  margin: 0;
  font-size: clamp(20px, 3.8vw, 26px);
  line-height: 1.35;
  font-weight: 700;
  color: var(--white);
}

.page-disclaimer .rule-block__body > p {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--disclaimer-text);
  max-width: 44em;
}

.page-disclaimer .rule-points {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-disclaimer .rule-points li {
  position: relative;
  padding: 12px 14px 12px 30px;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-s);
  background: var(--disclaimer-panel);
  font-size: 14px;
  line-height: 1.75;
  color: var(--disclaimer-text);
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-disclaimer .rule-points li::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 18px;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--cyan);
  box-shadow: 0 0 10px rgba(41, 240, 212, 0.75);
}

.page-disclaimer .rule-points li:hover {
  border-color: var(--line-cyan);
}

.page-disclaimer .rule-points__k {
  display: block;
  margin-bottom: 3px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-disclaimer .key-mark {
  background: rgba(41, 240, 212, 0.14);
  color: var(--cyan);
  padding: 0 4px;
  border-radius: 3px;
  font-weight: 700;
}

/* ---------- 提示条 ---------- */
.page-disclaimer .hint-bar {
  margin: 18px 0 0;
  padding: 13px 16px;
  border-left: 3px solid var(--orange);
  border-radius: 0 var(--r-s) var(--r-s) 0;
  background: linear-gradient(90deg, var(--disclaimer-warm), rgba(255, 122, 26, 0.02));
  font-size: 14px;
  line-height: 1.8;
  color: var(--white);
}

.page-disclaimer .hint-bar__idx {
  display: block;
  margin-bottom: 4px;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--orange);
}

/* ---------- 折叠条款 ---------- */
.page-disclaimer .clause {
  margin-top: 14px;
  border: 1px solid var(--line);
  border-radius: var(--r-s);
  background: rgba(6, 16, 31, 0.6);
}

.page-disclaimer .clause summary {
  position: relative;
  cursor: pointer;
  list-style: none;
  padding: 12px 40px 12px 14px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--white);
}

.page-disclaimer .clause summary::-webkit-details-marker {
  display: none;
}

.page-disclaimer .clause summary::after {
  content: "+";
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 18px;
  line-height: 1;
  color: var(--cyan);
}

.page-disclaimer .clause[open] summary::after {
  content: "−";
}

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

.page-disclaimer .clause__body {
  padding: 12px 14px 14px;
  border-top: 1px dashed var(--line-soft);
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 联系卡 ---------- */
.page-disclaimer .contact-card {
  margin-top: 20px;
  padding: 18px;
  border: 1px solid var(--line-cyan);
  border-radius: var(--r-m);
  background: linear-gradient(150deg, rgba(14, 53, 64, 0.86), rgba(6, 16, 31, 0.92));
  display: grid;
  gap: 12px;
}

.page-disclaimer .contact-card__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 12px;
  font-size: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line-soft);
}

.page-disclaimer .contact-card__row:last-of-type {
  border-bottom: none;
  padding-bottom: 0;
}

.page-disclaimer .contact-card__k {
  min-width: 66px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--mist);
}

.page-disclaimer .contact-card__v {
  color: var(--white);
  word-break: break-all;
  font-family: var(--font-mono);
  font-size: 13px;
}

.page-disclaimer .contact-card .copy-btn {
  border: 1px solid var(--line-cyan);
  border-radius: 999px;
  padding: 4px 12px;
  background: transparent;
  color: var(--cyan);
  font-size: 12px;
  cursor: pointer;
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease);
}

.page-disclaimer .contact-card .copy-btn:hover,
.page-disclaimer .contact-card .copy-btn:focus-visible {
  background: rgba(41, 240, 212, 0.14);
}

.page-disclaimer .contact-card .copy-btn[data-copied="true"] {
  border-color: var(--orange);
  color: var(--orange);
}

.page-disclaimer .contact-card__note {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

.page-disclaimer .rule-block__after {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--disclaimer-text);
  padding-left: 14px;
  border-left: 2px solid var(--line-cyan);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-disclaimer .rule-points {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-disclaimer .usage-head {
    padding: 30px 0 52px;
  }

  .page-disclaimer .usage-head__text .lede {
    font-size: 16px;
  }
}

@media (min-width: 901px) {
  .page-disclaimer .usage-head__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 48px;
  }

  .page-disclaimer .usage-body {
    grid-template-columns: 224px minmax(0, 1fr);
    gap: 52px;
    align-items: start;
  }

  .page-disclaimer .usage-toc {
    position: sticky;
    top: 96px;
    padding: 18px;
  }

  .page-disclaimer .usage-toc__list {
    display: grid;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-disclaimer .usage-toc__list a {
    white-space: normal;
    border-bottom: none;
    border-left: 2px solid transparent;
    border-radius: 0 var(--r-s) var(--r-s) 0;
  }

  .page-disclaimer .usage-toc__list a:hover,
  .page-disclaimer .usage-toc__list a:focus-visible {
    border-left-color: var(--cyan);
    border-bottom-color: transparent;
  }

  .page-disclaimer .rule-block {
    padding: 30px 0 38px;
  }

  .page-disclaimer .rule-block__head {
    gap: 18px;
  }

  .page-disclaimer .rule-block__num {
    font-size: 40px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .rule-points li,
  .page-disclaimer .usage-toc__list a,
  .page-disclaimer .contact-card .copy-btn {
    transition: none;
  }
}