/* =============================================================
 * legal.css
 * 隐私政策 (privacy.html) + 用户协议 (terms.html) 样式
 * 长法律文本 + 折叠式技术说明
 * 复用 base/layout/components/animations,本文件只补差异
 * ============================================================= */

/* ===================== Hero ===================== */
.lg-hero {
  background: linear-gradient(135deg, #0030ed 0%, #0045b0 100%);
  padding: 110px 0 90px;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.lg-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 20%, rgba(255,255,255,0.12) 0%, transparent 50%),
              radial-gradient(circle at 80% 80%, rgba(255,255,255,0.08) 0%, transparent 50%);
  pointer-events: none;
}

.lg-hero__inner {
  position: relative;
  z-index: 1;
}

.lg-hero__title {
  font-size: 42px;
  font-weight: 700;
  margin: 0 0 14px;
  color: #fff;
  letter-spacing: 0.5px;
}

.lg-hero__sub {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.85);
  margin: 0;
  font-weight: 500;
  letter-spacing: 0.5px;
}

/* ===================== 法律文档主体 ===================== */
.legal {
  padding: var(--space-2xl) 0;
  background: var(--color-bg);
}

.legal__inner {
  max-width: 880px;
  margin: 0 auto;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-2xl);
  box-shadow: var(--shadow-sm);
}

.legal__lead {
  font-size: 16px;
  line-height: 1.9;
  color: var(--color-text);
  margin: 0 0 var(--space-xl);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}

.legal__h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-heading);
  margin: var(--space-xl) 0 var(--space-md);
  padding-left: 12px;
  border-left: 4px solid var(--color-primary);
  line-height: 1.4;
}

.legal__h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-heading);
  margin: var(--space-md) 0 8px;
}

.legal p {
  font-size: 15px;
  line-height: 1.9;
  color: var(--color-text);
  margin: 0 0 var(--space-md);
}

.legal ul,
.legal ol {
  margin: 0 0 var(--space-md);
  padding-left: 24px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--color-text);
}

.legal li {
  margin-bottom: 4px;
}

.legal strong {
  color: var(--color-heading);
  font-weight: 600;
}

/* ===================== 折叠式技术说明 ===================== */
.tech-wrap {
  margin: var(--space-2xl) 0 0;
  padding-top: var(--space-xl);
  border-top: 1px dashed var(--color-border);
}

.tech-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  background: #f5f7fa;
  padding: 14px 20px;
  font-size: 18px;
  font-weight: 600;
  color: var(--color-primary);
  cursor: pointer;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  font-family: inherit;
  text-align: left;
  transition: all var(--duration-fast) var(--ease-out);
}

.tech-toggle:hover {
  background: #eef3fb;
  border-color: var(--color-primary);
}

.tech-toggle__icon {
  display: inline-block;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  text-align: center;
  line-height: 22px;
  font-size: 14px;
  transition: transform var(--duration-base) var(--ease-out);
  flex: 0 0 24px;
}

.tech-wrap.is-open .tech-toggle__icon {
  transform: rotate(45deg);
}

.tech-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, margin 0.4s ease;
  background: #fff;
  border-radius: var(--radius-sm);
  margin-top: 0;
  border: 1px solid var(--color-border);
  border-top: 0;
}

.tech-wrap.is-open .tech-content {
  max-height: 8000px;
  margin-top: 10px;
  border-top: 1px solid var(--color-border);
}

.tech-content-inner {
  padding: var(--space-md) var(--space-md);
  line-height: 1.85;
  font-size: 15px;
  color: #333;
}

.tech-content-inner p {
  margin: 0 0 var(--space-md);
}

.tech-content-inner a {
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: 1px dashed var(--color-primary);
  margin: 0 2px;
}

.tech-content-inner a:hover {
  color: var(--color-primary-dark);
  border-bottom-style: solid;
}

/* ===================== 响应式 ===================== */
@media (max-width: 980px) {
  .legal__inner {
    padding: var(--space-lg);
  }
  .lg-hero__title {
    font-size: 32px;
  }
}

@media (max-width: 600px) {
  .legal {
    padding: var(--space-lg) 0;
  }
  .legal__inner {
    padding: var(--space-md);
  }
  .legal__h2 {
    font-size: 18px;
  }
  .legal__h3 {
    font-size: 15px;
  }
  .lg-hero {
    padding: 80px 0 60px;
  }
  .lg-hero__title {
    font-size: 26px;
  }
}