/* ============================================================
   PAGE-DISCLAIMER · 使用说明与服务条款
   scope: .page-disclaimer
   设计语言：档案侧签 + 深空星尘 + 克制金色高亮
   ============================================================ */
.page-disclaimer {
  --terms-max-width: 1120px;
  --terms-gutter: 1.25rem;
  --terms-mono: "SF Mono", "Cascadia Code", "Roboto Mono", Consolas, monospace;
  --terms-card-bg: linear-gradient(150deg, rgba(21, 27, 49, 0.88), rgba(21, 27, 49, 0.6));
  --terms-card-border: 1px solid var(--color-line-faint);

  position: relative;
  padding: 0 0 6.5rem;
  color: var(--color-icy-white);
  background:
    radial-gradient(circle at 84% 3%, rgba(139, 92, 246, 0.12), transparent 30%),
    radial-gradient(circle at 8% 34%, rgba(247, 180, 51, 0.05), transparent 24%),
    var(--color-space-void);
}

/* ---- 条款页头 ---- */
.page-disclaimer .terms-hero {
  max-width: var(--terms-max-width);
  margin: 0 auto;
  padding: 2.25rem var(--terms-gutter) 1.25rem;
}

.page-disclaimer .terms-breadcrumb {
  margin-bottom: 2rem;
  color: var(--color-orbit-slate);
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
}

.page-disclaimer .terms-breadcrumb a {
  color: var(--color-orbit-slate);
  text-decoration: none;
  transition: color 200ms ease;
}

.page-disclaimer .terms-breadcrumb a:hover,
.page-disclaimer .terms-breadcrumb a:focus-visible {
  color: var(--color-star-gold);
}

.page-disclaimer .hero-title {
  max-width: 11em;
  margin: 0 0 1.25rem;
  font-size: clamp(2rem, 5.5vw, 3.6rem);
  font-weight: 300;
  line-height: 1.12;
  letter-spacing: 0.02em;
  color: var(--color-icy-white);
  text-shadow: 0 0 32px rgba(247, 180, 51, 0.14);
}

.page-disclaimer .hero-brand-line {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.42em;
  font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--color-star-gold);
  text-shadow: none;
}

.page-disclaimer .hero-main-line {
  display: block;
}

.page-disclaimer .page-intro {
  max-width: 42rem;
  margin: 0;
  color: var(--color-orbit-slate);
  font-size: 1rem;
  line-height: 1.8;
}

/* ---- 主视觉横幅 ---- */
.page-disclaimer .terms-visual {
  max-width: var(--terms-max-width);
  margin: 1.5rem auto 2rem;
  padding: 0 var(--terms-gutter);
}

.page-disclaimer .terms-visual-img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: var(--terms-card-border);
  box-shadow: var(--shadow-md);
  background: var(--color-cosmic-surface);
}

/* ---- 条款目录 ---- */
.page-disclaimer .terms-index {
  max-width: var(--terms-max-width);
  margin: 2rem auto 3rem;
  padding: 0 var(--terms-gutter);
}

.page-disclaimer .terms-index-list {
  display: flex;
  flex-direction: column;
  margin: 0;
  padding: 0;
  list-style: none;
  border: var(--terms-card-border);
  border-radius: var(--radius-md);
  background: rgba(21, 27, 49, 0.45);
  overflow: hidden;
}

.page-disclaimer .terms-index-list li + li {
  border-top: 1px solid rgba(42, 49, 87, 0.7);
}

.page-disclaimer .terms-index-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.9375rem 1.125rem;
  color: var(--color-icy-white);
  font-size: 0.9375rem;
  text-decoration: none;
  transition: background-color 200ms ease, color 200ms ease, padding-left 200ms ease;
}

.page-disclaimer .terms-index-link:hover,
.page-disclaimer .terms-index-link:focus-visible {
  background: rgba(247, 180, 51, 0.08);
  color: var(--color-star-gold);
  padding-left: 1.5rem;
}

.page-disclaimer .terms-index-no {
  font-family: var(--terms-mono);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-star-gold);
  opacity: 0.9;
}

.page-disclaimer .terms-index-link:hover .terms-index-no,
.page-disclaimer .terms-index-link:focus-visible .terms-index-no {
  opacity: 1;
}

/* ---- 条款区块 ---- */
.page-disclaimer .terms-block {
  max-width: var(--terms-max-width);
  margin: 0 auto 2.75rem;
  padding: 0 var(--terms-gutter);
  scroll-margin-top: calc(var(--header-height) + 0.75rem);
}

.page-disclaimer .terms-block-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.875rem;
}

.page-disclaimer .terms-no {
  flex: 0 0 auto;
  width: 2.125rem;
  height: 2.125rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-family: var(--terms-mono);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-star-gold);
  background: var(--color-space-void);
  border: 1px solid rgba(247, 180, 51, 0.48);
  box-shadow: 0 0 0 4px rgba(21, 27, 49, 0.6), 0 0 14px rgba(247, 180, 51, 0.12);
}

.page-disclaimer .terms-block-header h2 {
  margin: 0;
  font-size: var(--font-size-h3);
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--color-icy-white);
}

/* ---- 条款卡片：档案侧签 ---- */
.page-disclaimer .terms-card {
  position: relative;
  padding: 1.5rem 1.375rem;
  background: var(--terms-card-bg);
  border: var(--terms-card-border);
  border-left: 3px solid var(--color-star-gold);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform 200ms ease, box-shadow 200ms ease;
  overflow: hidden;
}

.page-disclaimer .terms-card::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 120px;
  height: 100px;
  background: radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.1), transparent 70%);
  pointer-events: none;
}

.page-disclaimer .terms-card:hover,
.page-disclaimer .terms-card:focus-within {
  transform: translateY(-3px);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.34), inset 0 0 0 1px rgba(247, 180, 51, 0.08);
}

.page-disclaimer .terms-card p {
  margin: 0 0 1rem;
  color: var(--color-icy-white);
  line-height: 1.75;
}

.page-disclaimer .terms-card p:last-child {
  margin-bottom: 0;
}

.page-disclaimer .terms-card .terms-lead {
  font-size: 1.0625rem;
}

.page-disclaimer .terms-card a {
  color: var(--color-star-gold);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(247, 180, 51, 0.4);
  transition: color 200ms ease, text-decoration-color 200ms ease;
}

.page-disclaimer .terms-card a:hover,
.page-disclaimer .terms-card a:focus-visible {
  color: #ffd076;
  text-decoration-color: var(--color-star-gold);
}

.page-disclaimer .terms-mark {
  color: var(--color-star-gold);
  border-bottom: 1px solid rgba(247, 180, 51, 0.55);
  padding-bottom: 0.125em;
}

/* ---- 条款列表 ---- */
.page-disclaimer .terms-list {
  margin: 1.25rem 0 0.25rem;
  padding: 0;
  list-style: none;
}

.page-disclaimer .terms-list li {
  position: relative;
  padding-left: 1.125rem;
  margin-bottom: 0.625rem;
  color: var(--color-icy-white);
  line-height: 1.7;
}

.page-disclaimer .terms-list li::before {
  content: "";
  position: absolute;
  left: 0.25rem;
  top: 0.72em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-star-gold);
  box-shadow: 0 0 8px rgba(247, 180, 51, 0.5);
}

.page-disclaimer .terms-list--rules li {
  padding-left: 1.375rem;
}

.page-disclaimer .terms-list--rules li::before {
  content: "✕";
  left: 0;
  top: 0.02em;
  width: auto;
  height: auto;
  background: none;
  box-shadow: none;
  color: var(--color-warning-coral);
  font-size: 0.875rem;
  font-weight: 600;
  line-height: 1.7;
}

/* ---- 注释折叠 ---- */
.page-disclaimer .terms-annotation {
  margin-top: 1.25rem;
  padding-top: 0.75rem;
  border-top: 1px dashed rgba(42, 49, 87, 0.9);
}

.page-disclaimer .annotation-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.25rem 0;
  background: transparent;
  border: 0;
  cursor: pointer;
  color: var(--color-orbit-slate);
  font-size: 0.875rem;
  line-height: 1.5;
  text-align: left;
  transition: color 200ms ease;
}

.page-disclaimer .annotation-toggle:hover,
.page-disclaimer .annotation-toggle:focus-visible {
  color: var(--color-star-gold);
}

.page-disclaimer .star-mark {
  color: var(--color-star-gold);
  font-size: 0.8125rem;
}

.page-disclaimer .accordion-panel {
  margin-top: 0.375rem;
}

.page-disclaimer .accordion-panel p {
  margin: 0.75rem 0 0;
  color: var(--color-orbit-slate);
  font-size: 0.9375rem;
  line-height: 1.7;
}

/* ---- 底部支持 ---- */
.page-disclaimer .terms-help {
  max-width: var(--terms-max-width);
  margin: 3rem auto 2rem;
  padding: 1.75rem 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1.25rem;
  border: 1px solid rgba(139, 92, 246, 0.28);
  border-radius: var(--radius-lg);
  background: linear-gradient(120deg, rgba(21, 27, 49, 0.7), rgba(139, 92, 246, 0.08));
}

.page-disclaimer .terms-help-content {
  max-width: 34rem;
}

.page-disclaimer .terms-help-kicker {
  margin: 0 0 0.5rem;
  color: var(--color-star-gold);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.3em;
  text-transform: uppercase;
}

.page-disclaimer .terms-help-text {
  margin: 0;
  color: var(--color-icy-white);
  line-height: 1.7;
}

.page-disclaimer .terms-help .btn-primary {
  flex: 0 0 auto;
}

/* ---- 返回顶部 ---- */
.page-disclaimer .back-to-top {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 60;
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.625rem 1rem;
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
  color: var(--color-star-gold);
  background: rgba(21, 27, 49, 0.88);
  border: 1px solid rgba(247, 180, 51, 0.4);
  border-radius: var(--radius-pill);
  text-decoration: none;
  box-shadow: 0 6px 28px rgba(0, 0, 0, 0.42);
  transition: border-color 200ms ease, box-shadow 200ms ease, transform 200ms ease;
}

.page-disclaimer .back-to-top:hover,
.page-disclaimer .back-to-top:focus-visible {
  border-color: var(--color-star-gold);
  box-shadow: 0 0 18px rgba(247, 180, 51, 0.18), 0 6px 28px rgba(0, 0, 0, 0.5);
  transform: translateY(-2px);
}

.page-disclaimer .back-to-top-icon {
  font-size: 1em;
  line-height: 1;
}

/* ---- 平板 / 桌面 ---- */
@media (min-width: 768px) {
  .page-disclaimer {
    padding-bottom: 7rem;
  }

  .page-disclaimer .terms-hero {
    padding: 4rem 2.25rem 1.75rem;
  }

  .page-disclaimer .page-intro {
    font-size: 1.0625rem;
  }

  .page-disclaimer .terms-visual {
    margin-top: 2rem;
    padding: 0 2.25rem;
  }

  .page-disclaimer .terms-index {
    padding: 0 2.25rem;
  }

  .page-disclaimer .terms-index-list {
    flex-direction: row;
  }

  .page-disclaimer .terms-index-list li {
    flex: 1 1 0;
  }

  .page-disclaimer .terms-index-list li + li {
    border-top: 0;
    border-left: 1px solid rgba(42, 49, 87, 0.7);
  }

  .page-disclaimer .terms-index-link {
    justify-content: center;
    padding: 1rem 1.125rem;
  }

  .page-disclaimer .terms-index-link:hover,
  .page-disclaimer .terms-index-link:focus-visible {
    padding-left: 1.125rem;
  }

  .page-disclaimer .terms-block {
    margin-bottom: 3.5rem;
    padding: 0 2.25rem;
  }

  .page-disclaimer .terms-card {
    padding: 2rem 2.125rem;
  }

  .page-disclaimer .terms-help {
    margin-top: 4rem;
    padding: 2rem 2.25rem;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .page-disclaimer .back-to-top {
    right: 2rem;
    bottom: 2rem;
    padding: 0.75rem 1.125rem;
  }
}

/* ---- 大屏加固 ---- */
@media (min-width: 1100px) {
  .page-disclaimer .terms-hero,
  .page-disclaimer .terms-visual,
  .page-disclaimer .terms-index,
  .page-disclaimer .terms-block,
  .page-disclaimer .terms-help {
    padding-left: 2.5rem;
    padding-right: 2.5rem;
  }
}