:root {
    --color-primary: #6C3082;
    --color-primary-dark: #4A1A5E;
    --color-accent: #FF6B35;
    --color-surface: #1E1B2E;
    --color-text: #F0E6FF;
    --rgb-primary: 108,48,130;
    --rgb-accent: 255,107,53;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --shadow-sm: 0 0 12px rgba(var(--rgb-accent), 0.3);
    --shadow-md: 0 0 18px rgba(var(--rgb-accent), 0.4);
    --shadow-lg: 0 0 24px rgba(var(--rgb-accent), 0.6);
    --space-section: 5rem;
    --space-card: 2rem;
    --space-gap: 1.5rem;
    --transition: 0.35s cubic-bezier(0.22, 1, 0.36, 1);
    --heading-weight: 600;
    --body-line-height: 1.65;
}

body { 
    color: var(--color-text); 
    line-height: var(--body-line-height); 
    background-color: var(--color-surface);
}

h1, h2, h3, h4 { 
    font-weight: var(--heading-weight); 
    color: #ffffff;
}

section, .section { 
    padding-top: var(--space-section); 
    padding-bottom: var(--space-section); 
}

.card, [class*="card"] { 
    border-radius: var(--radius-lg); 
    box-shadow: var(--shadow-md); 
    padding: var(--space-card); 
    transition: var(--transition); 
    background: linear-gradient(145deg, #2A2350, #1E1B2E);
    border: 1px solid rgba(var(--rgb-accent), 0.3);
}
.card:hover, [class*="card"]:hover { 
    box-shadow: var(--shadow-lg), 0 0 32px rgba(var(--rgb-accent), 0.6);
    border-color: var(--color-accent);
}

.btn, button[class*="btn"], a[class*="btn"] { 
    border-radius: var(--radius-md); 
    transition: var(--transition); 
    background: linear-gradient(135deg, var(--color-accent), #FF8C5A);
    color: #1E1B2E;
    font-weight: 600;
    border: none;
}
.btn:hover, button[class*="btn"]:hover, a[class*="btn"]:hover {
    box-shadow: 0 0 24px rgba(var(--rgb-accent), 0.5);
    transform: translateY(-2px);
}

a:not([class]) { 
    color: var(--color-accent); 
    transition: var(--transition); 
    text-decoration: none;
    border-bottom: 1px solid transparent;
}
a:not([class]):hover {
    color: #FF8C5A;
    border-bottom-color: currentColor;
}

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

/* news: masonry-2 */
.news-grid { 
    column-count: 2; 
    column-gap: var(--space-gap); 
}
.news-grid .card { 
    break-inside: avoid; 
    margin-bottom: var(--space-gap); 
}

/* features: centered */
.feature-list { 
    display: flex; 
    flex-direction: column; 
    align-items: center; 
    gap: calc(var(--space-gap) * 2); 
    max-width: 720px; 
    margin: 0 auto; 
}

/* hero: centered */
.hero-content { 
    text-align: center; 
    max-width: 800px; 
    margin: 0 auto; 
}

/* testimonials: grid-3 */
.testimonial-list { 
    display: grid; 
    grid-template-columns: repeat(3, 1fr); 
    gap: var(--space-gap); 
}

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

/* faq: two-column */
.faq-list { 
    display: grid; 
    grid-template-columns: 1fr 1fr; 
    gap: var(--space-gap); 
}

/* stats: grid-3 */
.stats-grid { 
    display: grid; 
    grid-template-columns: repeat(3, 1fr); 
    gap: var(--space-gap); 
    text-align: center; 
}

/* cta: split */
.cta-inner { 
    display: grid; 
    grid-template-columns: 1fr auto; 
    align-items: center; 
    gap: 2rem; 
}

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

/* 条件性装饰 */
.hero, [class*="hero"], section:first-of-type { 
    background: linear-gradient(135deg, #4A1A5E, #2D1140); 
    box-shadow: var(--shadow-sm);
    animation: hero-pulse 4s ease-in-out infinite;
}

@keyframes hero-pulse {
    0%, 100% { box-shadow: var(--shadow-sm); }
    50% { box-shadow: var(--shadow-md); }
}

header, .header, .navbar { 
    background: transparent; 
}

/* 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; }
}