/* ============ 使用说明页 ============ */
.page-disclaimer {
  position: relative;
  background: linear-gradient(170deg, var(--bg-deep), var(--bg-mid) 60%, var(--bg-deep));
  padding: 56px 0 88px;
  overflow: hidden;
}

.page-disclaimer::before {
  content: "";
  position: absolute;
  top: -120px;
  right: -100px;
  width: 340px;
  height: 340px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(245, 197, 24, 0.09), transparent 70%);
  pointer-events: none;
}

.page-disclaimer::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(0deg, rgba(217, 217, 217, 0.04) 0 1px, transparent 1px 52px),
    repeating-linear-gradient(90deg, rgba(217, 217, 217, 0.04) 0 1px, transparent 1px 52px);
  pointer-events: none;
}

.page-disclaimer .container {
  position: relative;
  z-index: 1;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}

.page-disclaimer .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 24px;
  padding-top: 4px;
  font-family: var(--font-body);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: rgba(244, 235, 224, 0.55);
}

.page-disclaimer .breadcrumb-item {
  display: inline-flex;
  align-items: center;
}

.page-disclaimer .breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  margin-right: 8px;
  color: rgba(244, 235, 224, 0.32);
}

.page-disclaimer .breadcrumb-link {
  color: rgba(244, 235, 224, 0.82);
  text-decoration: none;
  transition: color var(--transition);
}

.page-disclaimer .breadcrumb-link:hover {
  color: var(--gold);
}

.page-disclaimer .breadcrumb-current {
  color: rgba(244, 235, 224, 0.45);
}

.page-disclaimer .disclaimer-sheet {
  max-width: 920px;
  margin: 0 auto;
  background: var(--cream);
  color: var(--bg-deep);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.page-disclaimer .disclaimer-head {
  padding: 36px 24px 32px;
  border-bottom: 1px solid rgba(11, 31, 58, 0.12);
}

.page-disclaimer .section-kicker {
  display: block;
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-size: 12px;
  font-weight: var(--weight-head);
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--terracotta);
}

.page-disclaimer .page-title {
  margin: 0 0 18px;
  font-family: var(--font-head);
  font-size: 28px;
  font-weight: var(--weight-head);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--bg-deep);
}

.page-disclaimer .page-intro {
  margin: 0 0 20px;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: var(--weight-body);
  line-height: 1.85;
  color: rgba(11, 31, 58, 0.74);
}

.page-disclaimer .data-index {
  margin: 0;
  padding-left: 14px;
  border-left: 2px solid var(--gold);
  font-family: var(--font-body);
  font-size: 12px;
  line-height: 1.7;
  color: var(--stone);
}

.page-disclaimer .disclaimer-body {
  padding: 26px 24px 40px;
}

.page-disclaimer .lead {
  margin: 0;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: var(--weight-body);
  line-height: 1.95;
  color: rgba(11, 31, 58, 0.88);
}

.page-disclaimer .disclosure-stack {
  margin-top: 30px;
  border-top: 1px solid rgba(11, 31, 58, 0.14);
}

.page-disclaimer .disclosure-item {
  border-bottom: 1px solid rgba(11, 31, 58, 0.14);
}

.page-disclaimer .disclosure-toggle {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 2px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: var(--weight-head);
  color: var(--bg-deep);
  transition: color var(--transition);
}

.page-disclaimer .disclosure-toggle::-webkit-details-marker {
  display: none;
}

.page-disclaimer .disclosure-toggle:hover,
.page-disclaimer .disclosure-item[open] .disclosure-toggle {
  color: var(--accent);
}

.page-disclaimer .disclosure-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.page-disclaimer .disclosure-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  border: 1px solid currentColor;
  border-radius: 50%;
  font-family: var(--font-body);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--terracotta);
  transition: color var(--transition);
}

.page-disclaimer .disclosure-toggle:hover .disclosure-index {
  color: var(--accent);
}

.page-disclaimer .disclosure-title {
  flex: 1;
  letter-spacing: 0.02em;
}

.page-disclaimer .disclosure-toggle::after {
  content: "+";
  font-family: var(--font-body);
  font-size: 22px;
  font-weight: 300;
  line-height: 1;
  color: var(--stone);
  transition: transform var(--transition), color var(--transition);
}

.page-disclaimer .disclosure-item[open] .disclosure-toggle::after {
  transform: rotate(45deg);
  color: var(--accent);
}

.page-disclaimer .disclosure-content {
  padding: 0 2px 24px 50px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: var(--weight-body);
  line-height: 1.9;
  color: rgba(11, 31, 58, 0.74);
  animation: pageDisclosureIn 0.3s ease;
}

@keyframes pageDisclosureIn {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.page-disclaimer .disclosure-content p {
  margin: 0 0 14px;
}

.page-disclaimer .disclosure-content p:last-child {
  margin-bottom: 0;
}

.page-disclaimer .term-highlight {
  color: var(--accent);
  font-style: normal;
  font-weight: 500;
}

.page-disclaimer .disc-list {
  display: grid;
  gap: 10px;
  margin: 8px 0 18px;
  padding: 0;
  list-style: none;
}

.page-disclaimer .disc-list li {
  position: relative;
  padding-left: 18px;
}

.page-disclaimer .disc-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 6px;
  height: 6px;
  background: var(--terracotta);
  transform: rotate(45deg);
}

.page-disclaimer .disclosure-note {
  margin-top: 32px;
  padding: 20px;
  background: rgba(18, 61, 102, 0.06);
  border-left: 3px solid var(--gold);
  font-family: var(--font-body);
  font-size: 13px;
  line-height: 1.9;
  color: rgba(11, 31, 58, 0.7);
}

.page-disclaimer .disclosure-note p {
  margin: 0;
}

.page-disclaimer .disclosure-note a {
  color: var(--bg-mid);
  text-decoration: none;
  border-bottom: 1px solid rgba(18, 61, 102, 0.35);
  transition: color var(--transition), border-color var(--transition);
}

.page-disclaimer .disclosure-note a:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.page-disclaimer .disclaimer-figure {
  margin: 32px 0 0;
}

.page-disclaimer .disclaimer-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border-radius: var(--radius);
  border: 1px solid rgba(11, 31, 58, 0.1);
}

.page-disclaimer .figure-caption {
  margin-top: 10px;
  font-family: var(--font-body);
  font-size: 12px;
  line-height: 1.6;
  color: var(--stone);
  text-align: center;
  letter-spacing: 0.04em;
}

.page-disclaimer .disclaimer-return {
  margin-top: 32px;
  text-align: center;
}

.page-disclaimer .btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 34px;
  background: var(--bg-deep);
  color: var(--cream);
  border: 1px solid var(--bg-deep);
  border-radius: var(--radius);
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: var(--weight-head);
  letter-spacing: 0.08em;
  text-decoration: none;
  transition: background var(--transition), color var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.page-disclaimer .btn-primary:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  box-shadow: 0 10px 28px rgba(255, 107, 53, 0.34);
}

.page-disclaimer .disclaimer-edge {
  position: absolute;
  left: 50%;
  bottom: 40px;
  width: 220px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  opacity: 0.65;
  transform: translateX(-50%);
}

/* ============ 平板与桌面 ============ */
@media (min-width: 720px) {
  .page-disclaimer {
    padding: 96px 0 120px;
  }

  .page-disclaimer .container {
    padding: 0 32px;
  }

  .page-disclaimer .breadcrumb {
    margin-bottom: 40px;
  }

  .page-disclaimer .disclaimer-head {
    padding: 56px 64px 44px;
  }

  .page-disclaimer .page-title {
    font-size: 38px;
  }

  .page-disclaimer .page-intro {
    max-width: 66ch;
    font-size: 16px;
  }

  .page-disclaimer .disclaimer-body {
    padding: 36px 64px 56px;
  }

  .page-disclaimer .lead {
    max-width: 78ch;
    font-size: 16px;
  }

  .page-disclaimer .disclosure-toggle {
    padding: 24px 4px;
    font-size: 20px;
  }

  .page-disclaimer .disclosure-index {
    width: 40px;
    height: 40px;
    font-size: 13px;
  }

  .page-disclaimer .disclosure-content {
    padding-left: 59px;
    font-size: 15px;
  }

  .page-disclaimer .disclosure-note {
    padding: 24px 28px;
    font-size: 14px;
  }

  .page-disclaimer .disclaimer-figure {
    margin-top: 40px;
  }

  .page-disclaimer .disclaimer-return {
    margin-top: 40px;
  }

  .page-disclaimer .btn-primary {
    padding: 15px 40px;
    font-size: 16px;
  }

  .page-disclaimer .disclaimer-edge {
    bottom: 56px;
  }
}