:root {
  --ss-purple: #5915e1;
  --ss-purple-light: rgba(89, 21, 225, 0.1);
  --ss-purple-dark: #4711b4;
  --ss-orange: #ff8e18;
  --ss-green: #16c378;
  --ss-text-primary: #333;
  --ss-text-secondary: #666;
  --ss-text-muted: #999;
  --ss-border: #f0f0f0;
  --ss-bg-light: #fafafa;
  --ss-bg-white: #fff;
  --ss-shadow: 0 10px 40px 0 rgba(21, 55, 156, 0.06);
  --ss-radius: 20px;
  --ss-radius-sm: 10px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

.ss-page {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans', sans-serif;
  font-size: 14px;
  color: var(--ss-text-primary);
  background: #f5f7ff;
  min-height: 100vh;
  margin: 0;
  padding: 0;
}

.ss-header {
  background: var(--ss-bg-white);
  box-shadow: var(--ss-shadow);
  padding: 0 40px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
}

.ss-header-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  font-size: 20px;
  font-weight: 700;
  color: var(--ss-purple);
  letter-spacing: -0.5px;
}

.ss-header-logo img {
  height: 32px;
  margin-right: 10px;
}

.ss-header-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.ss-nav-link {
  display: inline-block;
  padding: 8px 18px;
  border-radius: var(--ss-radius-sm);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  color: var(--ss-text-secondary);
  transition: all 0.25s ease;
}

.ss-nav-link:hover {
  color: var(--ss-purple);
  background: var(--ss-purple-light);
}

.ss-nav-link.active {
  color: var(--ss-purple);
  background: var(--ss-purple-light);
}

.ss-main {
  max-width: 900px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}

.ss-hero-section {
  background: var(--ss-bg-white);
  border-radius: var(--ss-radius);
  box-shadow: var(--ss-shadow);
  padding: 40px 48px;
  margin-bottom: 32px;
}

.ss-page-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--ss-text-primary);
  margin: 0 0 12px 0;
  line-height: 1.2;
}

.ss-page-subtitle {
  font-size: 16px;
  color: var(--ss-text-secondary);
  margin: 0;
  line-height: 1.6;
}

.ss-section {
  background: var(--ss-bg-white);
  border-radius: var(--ss-radius);
  box-shadow: var(--ss-shadow);
  padding: 36px 48px;
  margin-bottom: 24px;
}

.ss-section-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--ss-text-primary);
  margin: 0 0 24px 0;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--ss-border);
}

.ss-section p {
  color: var(--ss-text-secondary);
  line-height: 1.7;
  margin: 0 0 16px 0;
}

.ss-section p:last-child {
  margin-bottom: 0;
}

.ss-qa-item {
  background: var(--ss-bg-light);
  border-radius: var(--ss-radius-sm);
  padding: 24px 28px;
  margin-bottom: 16px;
  border-left: 3px solid var(--ss-purple);
  transition: box-shadow 0.2s ease;
}

.ss-qa-item:last-child {
  margin-bottom: 0;
}

.ss-qa-item:hover {
  box-shadow: 0 4px 20px rgba(89, 21, 225, 0.08);
}

.ss-qa-question {
  font-size: 16px;
  font-weight: 600;
  color: var(--ss-text-primary);
  margin: 0 0 12px 0;
  line-height: 1.4;
}

.ss-qa-answer {
  font-size: 14px;
  color: var(--ss-text-secondary);
  line-height: 1.7;
  margin: 0;
}

.ss-qa-answer a {
  color: var(--ss-purple);
  text-decoration: none;
}

.ss-qa-answer a:hover {
  color: var(--ss-purple-dark);
  text-decoration: underline;
}

.ss-inline-link {
  color: var(--ss-purple);
  text-decoration: none;
  font-weight: 500;
}

.ss-inline-link:hover {
  color: var(--ss-purple-dark);
  text-decoration: underline;
}

.ss-badge {
  display: inline-block;
  background: var(--ss-purple-light);
  color: var(--ss-purple);
  border-radius: 9px;
  padding: 2px 10px;
  font-size: 12px;
  font-weight: 600;
  margin-right: 8px;
  vertical-align: middle;
}

.ss-badge-orange {
  background: rgba(255, 142, 24, 0.1);
  color: var(--ss-orange);
}

.ss-badge-green {
  background: rgba(22, 195, 120, 0.1);
  color: var(--ss-green);
}

.ss-info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 8px;
}

.ss-info-card {
  background: var(--ss-bg-light);
  border-radius: var(--ss-radius-sm);
  padding: 20px 24px;
}

.ss-info-card-label {
  font-size: 12px;
  color: var(--ss-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 0 0 6px 0;
  font-weight: 600;
}

.ss-info-card-value {
  font-size: 22px;
  font-weight: 700;
  color: var(--ss-text-primary);
  margin: 0;
  line-height: 1.2;
}

.ss-info-card-sub {
  font-size: 13px;
  color: var(--ss-text-muted);
  margin: 4px 0 0 0;
}

.ss-feature-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.ss-feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--ss-border);
}

.ss-feature-list li:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.ss-feature-icon {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  background: var(--ss-purple-light);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 18px;
}

.ss-feature-text strong {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: var(--ss-text-primary);
  margin-bottom: 4px;
}

.ss-feature-text span {
  font-size: 13px;
  color: var(--ss-text-secondary);
  line-height: 1.5;
}

.ss-divider {
  height: 1px;
  background: var(--ss-border);
  margin: 24px 0;
}

.ss-footer {
  background: var(--ss-bg-white);
  border-top: 1px solid var(--ss-border);
  padding: 32px 40px;
  text-align: center;
}

.ss-footer-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.ss-footer-links a {
  color: var(--ss-text-muted);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.2s;
}

.ss-footer-links a:hover {
  color: var(--ss-purple);
}

.ss-footer-copy {
  color: var(--ss-text-muted);
  font-size: 13px;
  margin: 0;
}

.ss-home-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: var(--ss-purple);
  color: #fff;
  border-radius: var(--ss-radius-sm);
  text-decoration: none;
  font-size: 16px;
  font-weight: 600;
  transition: background 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 4px 16px rgba(89, 21, 225, 0.25);
}

.ss-home-btn:hover {
  background: var(--ss-purple-dark);
  color: #fff;
  box-shadow: 0 6px 24px rgba(89, 21, 225, 0.35);
}

.ss-home-btn-wrapper {
  text-align: center;
  padding: 16px 0 0;
}

.ss-note {
  background: rgba(255, 142, 24, 0.08);
  border-left: 3px solid var(--ss-orange);
  border-radius: 0 var(--ss-radius-sm) var(--ss-radius-sm) 0;
  padding: 14px 18px;
  margin: 16px 0 0;
  font-size: 13px;
  color: var(--ss-text-secondary);
  line-height: 1.6;
}

.ss-note strong {
  color: var(--ss-orange);
}

.ss-tip {
  background: rgba(22, 195, 120, 0.08);
  border-left: 3px solid var(--ss-green);
  border-radius: 0 var(--ss-radius-sm) var(--ss-radius-sm) 0;
  padding: 14px 18px;
  margin: 16px 0 0;
  font-size: 13px;
  color: var(--ss-text-secondary);
  line-height: 1.6;
}

.ss-breadcrumb {
  font-size: 13px;
  color: var(--ss-text-muted);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.ss-breadcrumb a {
  color: var(--ss-purple);
  text-decoration: none;
}

.ss-breadcrumb a:hover {
  text-decoration: underline;
}

.ss-breadcrumb span {
  color: var(--ss-text-muted);
}

@media screen and (max-width: 768px) {
  .ss-header {
    padding: 0 20px;
  }

  .ss-hero-section,
  .ss-section {
    padding: 28px 24px;
  }

  .ss-main {
    padding: 24px 16px 60px;
  }

  .ss-page-title {
    font-size: 24px;
  }

  .ss-info-grid {
    grid-template-columns: 1fr;
  }

  .ss-header-nav {
    gap: 4px;
  }

  .ss-nav-link {
    padding: 6px 12px;
    font-size: 13px;
  }

  .ss-footer {
    padding: 24px 20px;
  }

  .ss-footer-links {
    gap: 16px;
  }
}

@media screen and (max-width: 480px) {
  .ss-hero-section,
  .ss-section {
    padding: 20px 16px;
  }

  .ss-qa-item {
    padding: 18px 16px;
  }

  .ss-page-title {
    font-size: 20px;
  }

  .ss-section-title {
    font-size: 17px;
  }

  .ss-home-btn {
    padding: 12px 24px;
    font-size: 15px;
  }
}