/* ==== 使用说明页 · 页面专属样式 ==== */
.page-disclaimer {
  overflow-x: hidden;
  padding-bottom: 64px;
  background-image: radial-gradient(rgba(255, 255, 255, .013) 1px, transparent 1px);
  background-size: 4px 4px;
}

/* ---- 页头 ---- */
.page-disclaimer .page-head {
  padding-bottom: 36px;
  border-bottom: 1px solid var(--border-line);
}

.page-disclaimer .head-grid {
  display: grid;
  gap: 18px;
  margin-top: 22px;
}

.page-disclaimer .head-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  font-size: 12px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--accent-gold);
}

.page-disclaimer .head-kicker::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--primary-red);
}

.page-disclaimer .page-title {
  margin: 0;
  max-width: 13em;
  font-family: var(--font-heading);
  font-size: clamp(30px, 7vw, 46px);
  line-height: 1.14;
  letter-spacing: -.01em;
  font-weight: 900;
  color: var(--text-high);
}

.page-disclaimer .head-aside {
  border-left: 2px solid var(--primary-red);
  padding: 2px 0 2px 16px;
}

.page-disclaimer .version-label {
  display: block;
  margin-bottom: 4px;
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--text-low);
}

.page-disclaimer .version-value {
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 700;
  color: var(--accent-gold);
}

.page-disclaimer .version-note {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-mid);
}

.page-disclaimer .page-intro {
  margin-top: 18px;
  max-width: 72ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-mid);
}

/* ---- 条款索引 ---- */
.page-disclaimer .index-panel {
  margin-top: 24px;
  padding: 20px 18px;
  background: linear-gradient(180deg, var(--secondary-black), var(--primary-black));
  border: 1px solid var(--border-line);
  border-left: 3px solid var(--primary-red);
}

.page-disclaimer .index-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.page-disclaimer .index-note {
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--text-low);
  white-space: nowrap;
}

.page-disclaimer .index-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--border-line), transparent);
}

.page-disclaimer .index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.page-disclaimer .index-list a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  background: var(--primary-black);
  border: 1px solid var(--border-line);
  color: var(--text-high);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  transition: background .35s var(--ease), border-color .35s var(--ease), transform .35s var(--ease);
}

.page-disclaimer .index-list a:hover {
  border-color: var(--primary-red);
  background: var(--secondary-black);
  transform: translateX(5px);
}

.page-disclaimer .index-letter {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  flex-shrink: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 700;
  font-size: 15px;
  color: var(--accent-gold);
  border: 1px solid var(--accent-gold);
  background: var(--secondary-black);
}

/* ---- 条款主体 ---- */
.page-disclaimer .clause-section {
  padding-top: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--border-line);
}

.page-disclaimer .alt-tint {
  background:
    linear-gradient(115deg, rgba(224, 42, 35, .05) 0%, rgba(224, 42, 35, 0) 45%),
    linear-gradient(180deg, var(--primary-black), var(--secondary-black));
}

.page-disclaimer .clause-head {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 20px;
}

.page-disclaimer .clause-letter {
  position: relative;
  min-width: 48px;
  flex-shrink: 0;
  text-align: center;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 46px;
  font-weight: 900;
  line-height: .9;
  color: transparent;
  -webkit-text-stroke: 1px var(--accent-gold);
}

.page-disclaimer .clause-letter::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -8px;
  width: 2px;
  height: 12px;
  background: var(--primary-red);
  transform: translateX(-50%);
}

.page-disclaimer .clause-title-wrap {
  flex: 1;
  padding-top: 2px;
}

.page-disclaimer .clause-title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: 24px;
  font-weight: 900;
  line-height: 1.2;
  color: var(--text-high);
}

.page-disclaimer .clause-en {
  display: block;
  margin-top: 6px;
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--text-low);
}

.page-disclaimer .clause-body {
  padding-left: 14px;
  border-left: 1px solid rgba(201, 160, 99, .3);
}

.page-disclaimer .clause-body p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-mid);
}

.page-disclaimer .clause-body > p:last-child {
  margin-bottom: 0;
}

.page-disclaimer .clause-body a {
  color: var(--accent-gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(201, 160, 99, .4);
  transition: color .3s var(--ease), border-color .3s var(--ease);
}

.page-disclaimer .clause-body a:hover {
  color: var(--text-high);
  border-color: var(--primary-red);
}

.page-disclaimer .clause-list {
  list-style: none;
  margin: 18px 0;
  padding: 0;
}

.page-disclaimer .clause-list li {
  position: relative;
  padding-left: 26px;
  margin-bottom: 12px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-mid);
}

.page-disclaimer .clause-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 16px;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-red), var(--accent-gold));
}

.page-disclaimer .clause-list li strong {
  color: var(--text-high);
  font-weight: 600;
}

/* ---- 展开条款 ---- */
.page-disclaimer .clause-more {
  margin-top: 22px;
  background: var(--secondary-black);
  border: 1px solid var(--border-line);
  border-left: 3px solid var(--accent-gold);
}

.page-disclaimer .clause-more summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-high);
  user-select: none;
  transition: background .3s var(--ease);
}

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

.page-disclaimer .clause-more summary::before {
  content: "+";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  border: 1px solid var(--primary-red);
  border-radius: 50%;
  color: var(--primary-red);
  font-size: 14px;
  font-weight: 700;
  line-height: 1;
  transition: background .3s var(--ease), color .3s var(--ease), transform .3s var(--ease);
}

.page-disclaimer .clause-more[open] summary::before {
  content: "−";
  background: var(--primary-red);
  color: #fff;
  transform: rotate(90deg);
}

.page-disclaimer .clause-more-inner {
  padding: 14px 16px 16px;
  border-top: 1px dashed var(--border-line);
}

.page-disclaimer .clause-more-inner p {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-mid);
}

.page-disclaimer .clause-more-inner ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-disclaimer .clause-more-inner li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 8px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-mid);
}

.page-disclaimer .clause-more-inner li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 7px;
  height: 7px;
  border: 1px solid var(--accent-gold);
  transform: rotate(45deg);
}

.page-disclaimer .clause-more-inner li:last-child {
  margin-bottom: 0;
}

/* ---- 底部声明 ---- */
.page-disclaimer .seal-section {
  padding: 56px 0 40px;
}

.page-disclaimer .seal-layout {
  display: grid;
  gap: 32px;
}

.page-disclaimer .seal-kicker {
  display: inline-block;
  margin-bottom: 14px;
  font-size: 11px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--accent-gold);
}

.page-disclaimer .seal-kicker::before {
  content: "";
  display: inline-block;
  width: 20px;
  height: 1px;
  margin-right: 8px;
  vertical-align: middle;
  background: var(--primary-red);
}

.page-disclaimer .seal-text {
  margin: 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-mid);
}

.page-disclaimer .seal-figure {
  position: relative;
  margin: 0;
  width: 100%;
  max-width: 600px;
}

.page-disclaimer .seal-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--border-line);
  filter: saturate(.85) contrast(1.08);
}

.page-disclaimer .seal-figure::before,
.page-disclaimer .seal-figure::after {
  content: "";
  position: absolute;
  width: 46px;
  height: 46px;
  pointer-events: none;
}

.page-disclaimer .seal-figure::before {
  top: -8px;
  left: -8px;
  border-top: 1px solid var(--accent-gold);
  border-left: 1px solid var(--accent-gold);
}

.page-disclaimer .seal-figure::after {
  right: -8px;
  bottom: -8px;
  border-right: 1px solid var(--accent-gold);
  border-bottom: 1px solid var(--accent-gold);
}

.page-disclaimer .seal-figure .figcaption {
  margin-top: 12px;
}

/* ---- 底部信息行 ---- */
.page-disclaimer .last-updated {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  margin-top: 12px;
  padding-top: 24px;
  border-top: 1px solid var(--border-line);
}

.page-disclaimer .last-updated-text {
  font-size: 13px;
  color: var(--text-low);
}

.page-disclaimer .to-home {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 3px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-high);
  text-decoration: none;
  border-bottom: 1px solid var(--primary-red);
  transition: color .3s var(--ease), border-color .3s var(--ease);
}

.page-disclaimer .to-home:hover {
  color: var(--primary-red);
  border-color: var(--accent-gold);
}

/* ---- 桌面增强 ---- */
@media (min-width: 768px) {
  .page-disclaimer {
    padding-bottom: 88px;
  }

  .page-disclaimer .head-grid {
    grid-template-columns: minmax(0, 1fr) 230px;
    align-items: end;
    gap: 28px;
  }

  .page-disclaimer .page-intro {
    margin-top: 24px;
    font-size: 16px;
  }

  .page-disclaimer .index-list {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-disclaimer .index-list a {
    min-height: 60px;
  }

  .page-disclaimer .clause-section {
    padding-top: 72px;
    padding-bottom: 72px;
  }

  .page-disclaimer .clause-title {
    font-size: 30px;
  }

  .page-disclaimer .clause-letter {
    min-width: 56px;
    font-size: 56px;
  }

  .page-disclaimer .clause-body {
    margin-left: 68px;
    padding-left: 20px;
  }

  .page-disclaimer .seal-section {
    padding: 72px 0 48px;
  }

  .page-disclaimer .seal-layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: center;
    gap: 48px;
  }
}

@media (min-width: 1024px) {
  .page-disclaimer .index-list {
    grid-template-columns: repeat(4, 1fr);
  }
}