:root {
    --color-primary: #7c3aed;
    --color-primary-dark: #0b1020;
    --color-accent: #f59e0b;
    --color-surface: #0f172a;
    --color-text: #e7e9ff;
    --rgb-primary: 124,58,237;
    --rgb-accent: 245,158,11;
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 6px;
    --radius-xl: 8px;
    --shadow-sm: 0 0.5px 1px rgba(0,0,0,.22);
    --shadow-md: 0 1px 0 rgba(255,255,255,.06), 0 0 0 rgba(0,0,0,0);
    --shadow-lg: 0 1px 0 rgba(255,255,255,.06), 0 10px 24px rgba(0,0,0,.22), 0 2px 6px rgba(0,0,0,.16);
    --space-section: 6.25rem;
    --space-card: 1rem;
    --space-gap: 0.875rem;
    --transition: 220ms cubic-bezier(0.2, 0.9, 0.2, 1);
    --heading-weight: 700;
    --body-line-height: 1.75;
}

body { color: var(--color-text); line-height: var(--body-line-height); background: radial-gradient(1200px 600px at 50% 0%, rgba(124,58,237,.18) 0%, rgba(15,15,26,0) 60%), radial-gradient(900px 520px at 15% 20%, rgba(245,158,11,.12) 0%, rgba(15,15,26,0) 55%), #0f0f1a; }
h1, h2, h3, h4 { font-weight: var(--heading-weight); }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); }
.card, [class*="card"] {
    border-radius: var(--radius-lg);
    box-shadow:
        0 0 0 1px rgba(245,158,11,.10),
        0 0 0 0 rgba(0,0,0,0),
        0 8px 22px rgba(0,0,0,.22),
        0 2px 6px rgba(0,0,0,.18);
    padding: var(--space-card);
    transition: var(--transition);
    background: linear-gradient(180deg, rgba(255,255,255,.055) 0%, rgba(255,255,255,.025) 100%);
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: var(--transition);
    background: linear-gradient(180deg, rgba(245,158,11,.18) 0%, rgba(124,58,237,.10) 100%);
    border: 1px solid rgba(245,158,11,.25);
    color: rgba(255,255,255,.92);
}
a:not([class]) { color: var(--color-accent); transition: var(--transition); text-shadow: 0 1px 0 rgba(0,0,0,.28); }

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

/* news: grid-3 */
/* 三列等宽网格 */
                .news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }

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

/* hero: overlay */
/* 全屏背景+文字覆盖 */
                .hero { position: relative; min-height: 70vh; display: flex; align-items: center; }
                .hero-content { position: relative; z-index: 1; }

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

/* 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; }

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

/* Page Layout: wide */
/* 超宽 */
            .page-main { max-width: 920px; margin: 0 auto; }

/* 条件性装饰 */
.hero, [class*="hero"], section:first-of-type {
    background:
        radial-gradient(900px 420px at 50% 0%, rgba(245,158,11,.22) 0%, rgba(245,158,11,0) 58%),
        radial-gradient(820px 460px at 15% 35%, rgba(124,58,237,.26) 0%, rgba(124,58,237,0) 60%),
        linear-gradient(135deg, #0f0f1a 0%, rgba(11,16,32,.86) 45%, #0f0f1a 100%);
}
.card { border-left: 3px solid rgba(124,58,237,.95); }
header, .header, .navbar {
    box-shadow:
        0 1px 0 rgba(255,255,255,.05),
        0 10px 26px rgba(0,0,0,.22),
        0 2px 8px rgba(0,0,0,.16);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(245,158,11,.14);
}

/* 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: 2.2rem; --space-card: 0.9rem; --space-gap: 0.7rem; }
    .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; }
}