:root {
    --color-primary: #5b21b6;
    --color-primary-dark: #2e1065;
    --color-accent: #f59e0b;
    --color-surface: #fffbeb;
    --color-text: #1e1b4b;
    --rgb-primary: 91,33,182;
    --rgb-accent: 245,158,11;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 20px;
    --shadow-sm: 0 0 12px rgba(245,158,11,0.22), 0 1px 2px rgba(30,27,75,0.08);
    --shadow-md: 0 0 24px rgba(245,158,11,0.40), 0 6px 18px -6px rgba(46,16,101,0.28);
    --shadow-lg: 0 0 32px rgba(245,158,11,0.60), 0 18px 40px -12px rgba(46,16,101,0.38);
    --space-section: 3.5rem;
    --space-card: 1.25rem;
    --space-gap: 1rem;
    --transition: 0.35s cubic-bezier(0.22, 1, 0.36, 1);
    --heading-weight: 800;
    --body-line-height: 1.65;
}

/* 基础覆盖 */
body {
    color: var(--color-text);
    line-height: var(--body-line-height);
    background-color: #fffdf7;
    background-image: radial-gradient(circle at 12% -10%, rgba(245,158,11,0.10), transparent 55%),
                      radial-gradient(circle at 88% 0%, rgba(91,33,182,0.08), transparent 50%);
    accent-color: var(--color-accent);
    caret-color: var(--color-primary);
}
h1, h2, h3, h4 { font-weight: var(--heading-weight); color: var(--color-primary-dark); text-shadow: 0 0 24px rgba(245,158,11,0.20); }
section, .section {
    padding-top: var(--space-section);
    padding-bottom: var(--space-section);
    background-color: #ffffff;
    border-top: 1px solid rgba(91,33,182,0.06);
    border-bottom: 1px solid rgba(91,33,182,0.06);
}
section:nth-of-type(even), .section:nth-of-type(even) {
    background-color: #fffbeb;
    background-image: linear-gradient(180deg, rgba(245,158,11,0.07), rgba(255,255,255,0) 65%);
}
section:nth-of-type(3n), .section:nth-of-type(3n) {
    background-color: #1e1b4b;
    background-image: linear-gradient(135deg, #1e1b4b 0%, #2e1065 60%, #3b0764 100%);
    border-top-color: rgba(245,158,11,0.35);
    border-bottom-color: rgba(245,158,11,0.35);
    color: #fef3c7;
}
section:nth-of-type(3n) h1, section:nth-of-type(3n) h2, section:nth-of-type(3n) h3, section:nth-of-type(3n) h4,
.section:nth-of-type(3n) h1, .section:nth-of-type(3n) h2, .section:nth-of-type(3n) h3, .section:nth-of-type(3n) h4 {
    color: #fde68a;
    text-shadow: 0 0 28px rgba(245,158,11,0.55);
}
.card, [class*="card"] {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--space-card);
    transition: var(--transition);
    background-color: #ffffff;
    background-image: linear-gradient(160deg, rgba(245,158,11,0.06), rgba(91,33,182,0.04) 70%);
    border: 1px solid rgba(245,158,11,0.28);
    animation: glowPulse 5s ease-in-out infinite;
}
.card:hover, [class*="card"]:hover {
    box-shadow: var(--shadow-lg);
    border-color: rgba(245,158,11,0.75);
    background-color: #fffdf7;
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: var(--transition);
    background-image: linear-gradient(135deg, #5b21b6 0%, #7c3aed 55%, #a855f7 100%);
    color: #fffbeb;
    border: 1px solid rgba(245,158,11,0.55);
    box-shadow: 0 0 18px rgba(245,158,11,0.35), 0 6px 14px -6px rgba(46,16,101,0.45);
}
.btn:hover, button[class*="btn"]:hover, a[class*="btn"]:hover {
    box-shadow: 0 0 32px rgba(245,158,11,0.60), 0 10px 22px -8px rgba(46,16,101,0.55);
    border-color: rgba(253,230,138,0.95);
    outline: 2px solid rgba(245,158,11,0.45);
}
a:not([class]) {
    color: var(--color-primary);
    transition: var(--transition);
    text-decoration-color: rgba(245,158,11,0.60);
}
a:not([class]):hover { color: #b45309; text-shadow: 0 0 16px rgba(245,158,11,0.50); }

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

/* news: grid-4 */
/* 四列紧凑网格 */
                .news-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: calc(var(--space-gap) * 0.8); }

/* features: grid-4 */
.feature-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); }

/* hero: left-aligned */
.hero-content { text-align: left; max-width: 600px; }

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

/* partners: centered */
.partner-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 2rem; }

/* faq: single-column */
.faq-list { max-width: 800px; margin: 0 auto; }

/* stats: big-number */
/* 大数字居中 */
                .stats-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 2rem; }
                .stats-grid .stat-value { font-size: 3rem; color: var(--color-primary); text-shadow: 0 0 26px rgba(245,158,11,0.55); }

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

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

/* 条件性装饰 */
header, .header, .navbar {
    background: linear-gradient(90deg, rgba(30,27,75,0.96) 0%, rgba(46,16,101,0.92) 55%, rgba(91,33,182,0.90) 100%);
    box-shadow: 0 8px 26px -10px rgba(46,16,101,0.55), 0 0 22px rgba(245,158,11,0.28);
    border-bottom: 1px solid rgba(245,158,11,0.40);
    color: #fef3c7;
}

@keyframes glowPulse {
    0%, 100% { box-shadow: 0 0 20px rgba(245,158,11,0.28), 0 6px 18px -6px rgba(46,16,101,0.26); }
    50% { box-shadow: 0 0 34px rgba(245,158,11,0.52), 0 10px 26px -8px rgba(46,16,101,0.34); }
}

/* 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; }
}