:root {
    --color-primary: #7c3aed;
    --color-primary-dark: #5b21b6;
    --color-accent: #d4af37;
    --color-surface: #1a1a2e;
    --color-text: #e8e3f5;
    --rgb-primary: 124,58,237;
    --rgb-accent: 212,175,55;
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --shadow-sm: 0 1px 3px rgba(124,58,237,0.12), 0 1px 2px rgba(0,0,0,0.24);
    --shadow-md: 0 4px 16px rgba(124,58,237,0.18), 0 2px 6px rgba(0,0,0,0.3), 0 0 0 1px rgba(124,58,237,0.08);
    --shadow-lg: 0 12px 40px rgba(124,58,237,0.25), 0 4px 12px rgba(0,0,0,0.4), 0 0 0 1px rgba(212,175,55,0.1);
    --space-section: 3rem;
    --space-card: 1.25rem;
    --space-gap: 1rem;
    --transition: 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --heading-weight: 700;
    --body-line-height: 1.65;
}

body {
    color: var(--color-text);
    line-height: var(--body-line-height);
    background: linear-gradient(180deg, #0f0f1a 0%, #16162a 40%, #1a1a2e 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(135deg, rgba(124,58,237,0.04) 0%, rgba(212,175,55,0.02) 50%, rgba(124,58,237,0.04) 100%);
}
.card, [class*="card"] {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--space-card);
    transition: var(--transition);
    background: linear-gradient(145deg, rgba(26,26,46,0.95) 0%, rgba(30,30,55,0.9) 50%, rgba(22,22,42,0.95) 100%);
    border: 1px solid rgba(124,58,237,0.2);
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: var(--transition);
    background: linear-gradient(135deg, #7c3aed 0%, #6d28d9 50%, #5b21b6 100%);
    color: #f0eaff;
    border: 1px solid rgba(212,175,55,0.25);
    box-shadow: 0 2px 12px rgba(124,58,237,0.3), inset 0 1px 0 rgba(255,255,255,0.1);
}
a:not([class]) {
    color: var(--color-accent);
    transition: var(--transition);
}

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

/* news: featured-top */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }
.news-grid > *:first-child {
    grid-column: span 3;
    background: linear-gradient(135deg, rgba(124,58,237,0.12) 0%, rgba(212,175,55,0.06) 100%);
    border-radius: var(--radius-lg);
}

/* 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: minimal */
.hero {
    padding: 2rem 0;
    background: radial-gradient(ellipse at center, rgba(124,58,237,0.15) 0%, rgba(15,15,26,0) 70%);
}
.hero-content { max-width: 560px; }

/* testimonials: carousel */
.testimonial-list { display: flex; overflow: hidden; }
.testimonial-list > * { flex: 0 0 100%; }

/* partners: grid-6 */
.partner-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--space-gap);
    align-items: center;
    padding: 1.5rem 1rem;
    background: linear-gradient(90deg, rgba(124,58,237,0.06) 0%, rgba(212,175,55,0.04) 50%, rgba(124,58,237,0.06) 100%);
    border-radius: var(--radius-xl);
}

/* faq: with-sidebar */
.faq-wrapper {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
    background: linear-gradient(180deg, rgba(26,26,46,0.6) 0%, rgba(15,15,26,0.3) 100%);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
}

/* stats: grid-4 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-gap);
    text-align: center;
    background: linear-gradient(135deg, rgba(124,58,237,0.08), rgba(212,175,55,0.05));
    border-radius: var(--radius-lg);
    padding: 1.5rem;
}

/* cta: card-style */
.cta-inner {
    background: linear-gradient(145deg, #1e1e3a 0%, #252550 40%, #1a1a2e 100%);
    border-radius: var(--radius-xl);
    padding: 3rem;
    text-align: center;
    border: 1px solid rgba(212,175,55,0.3);
    box-shadow: 0 8px 32px rgba(124,58,237,0.2), 0 0 60px rgba(212,175,55,0.06), inset 0 1px 0 rgba(212,175,55,0.15);
}

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

/* 条件性装饰 */
a:not([class]):hover { color: #e8c84a; }
header, .header, .navbar {
    box-shadow: 0 2px 20px rgba(124,58,237,0.2), 0 1px 4px rgba(0,0,0,0.4);
    background: linear-gradient(180deg, rgba(15,15,26,0.98) 0%, rgba(22,22,42,0.95) 100%);
    border-bottom: 1px solid rgba(124,58,237,0.15);
}

/* 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; }
}