:root {
  --color-primary: #e60023;
  --color-primary-dark: #b3001b;
  --color-accent: #ff6b6b;
  --color-surface: #f8f9fb;
  --color-text: #1c1d1f;
  --rgb-primary: 230,0,35;
  --rgb-accent: 255,107,107;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-xl: 30px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,.04), 0 1px 4px rgba(0,0,0,.06);
  --shadow-md: 0 6px 20px rgba(0,0,0,.06), 0 2px 8px rgba(0,0,0,.04);
  --shadow-lg: 0 12px 40px rgba(0,0,0,.08), 0 4px 16px rgba(0,0,0,.05);
  --space-section: 4rem;
  --space-card: 1.5rem;
  --space-gap: 1.25rem;
  --transition: 0.45s cubic-bezier(.25,.46,.45,.94);
  --heading-weight: 700;
  --body-line-height: 1.75;
}

body {
  color: var(--color-text);
  line-height: var(--body-line-height);
  background: linear-gradient(180deg, #ffffff 0%, #f3f5f9 100%);
}
h1, h2, h3, h4 { font-weight: var(--heading-weight); }
section, .section {
  padding-top: var(--space-section);
  padding-bottom: var(--space-section);
  background: linear-gradient(180deg, rgba(255,255,255,.5), transparent);
}
.card, [class*="card"] {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--space-card);
  transition: var(--transition);
  background: #ffffff;
  border: 1px solid transparent;
  border-image: linear-gradient(135deg, #ff9a9e 0%, #fad0c4 50%, #a18cd1 100%) 1;
  background-clip: padding-box;
}
.btn, button[class*="btn"], a[class*="btn"] {
  border-radius: var(--radius-md);
  transition: var(--transition);
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  border: none;
}
a:not([class]) {
  color: var(--color-primary);
  transition: var(--transition);
}

/* ========== Section Layout Variants ========== */

/* news: featured-left */
.news-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  grid-template-rows: auto auto;
  gap: var(--space-gap);
}
.news-grid > *:first-child { grid-row: span 2; }

/* features: grid-2 */
.feature-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: calc(var(--space-gap) * 1.5);
}

/* hero: left-aligned */
.hero-content {
  text-align: left;
  max-width: 600px;
  background: linear-gradient(135deg, rgba(255,255,255,.6), rgba(255,255,255,.2));
  border-radius: var(--radius-xl);
}

/* testimonials: masonry */
.testimonial-list {
  column-count: 2;
  column-gap: var(--space-gap);
}
.testimonial-list > * {
  break-inside: avoid;
  margin-bottom: var(--space-gap);
}

/* partners: grid-6 */
.partner-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--space-gap);
  align-items: center;
}

/* faq: with-sidebar */
.faq-wrapper {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 2rem;
}

/* stats: big-number */
.stats-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
}
.stats-grid .stat-value {
  font-size: 3rem;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* cta: centered */
.cta-inner {
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

/* Page Layout: full-width */
.page-main {
  max-width: 1200px;
  margin: 0 auto;
}

/* 条件性装饰 */
a:not([class]):hover { color: var(--color-accent); }
.card {
  border: 1px solid transparent;
  border-image: linear-gradient(135deg, #ff9a9e 0%, #fad0c4 50%, #a18cd1 100%) 1;
  background-clip: padding-box;
}
header, .header, .navbar {
  background: linear-gradient(180deg, rgba(255,255,255,.9), rgba(255,255,255,.6));
  backdrop-filter: blur(8px);
}

/* Responsive */
@media (max-width: 1024px) {
  .news-grid { grid-template-columns: repeat(2, 1fr) !important; }
  .feature-list { grid-template-columns: repeat(2, 1fr) !important; }
  .partner-grid { grid-template-columns: repeat(3, 1fr) !important; }
  .stats-grid { grid-template-columns: repeat(2, 1fr) !important; }
  .hero-inner { grid-template-columns: 1fr !important; }
}
@media (max-width: 640px) {
  :root {
    --space-section: 2rem;
    --space-card: 1rem;
    --space-gap: 0.75rem;
  }
  .news-grid { grid-template-columns: 1fr !important; }
  .feature-list { grid-template-columns: 1fr !important; }
  .faq-list { grid-template-columns: 1fr !important; }
  .testimonial-list { column-count: 1 !important; }
  .partner-grid { grid-template-columns: repeat(2, 1fr) !important; }
  .stats-grid { grid-template-columns: repeat(2, 1fr) !important; }
  .cta-inner { grid-template-columns: 1fr !important; }
}