:root {
    --color-primary: #7c3aed;
    --color-primary-dark: #3b1178;
    --color-accent: #22d3ee;
    --color-surface: #fdf6e9;
    --color-text: #241a3a;
    --rgb-primary: 124,58,237;
    --rgb-accent: 34,211,238;
    --radius-sm: 9px;
    --radius-md: 13px;
    --radius-lg: 15px;
    --radius-xl: 21px;
    --shadow-sm: 0 1px 2px rgba(59,17,120,.18), 0 0 10px rgba(34,211,238,.22);
    --shadow-md: 0 4px 12px rgba(59,17,120,.20), 0 0 24px rgba(34,211,238,.32);
    --shadow-lg: 0 14px 30px rgba(59,17,120,.28), 0 0 32px rgba(34,211,238,.55), 0 0 64px rgba(124,58,237,.30);
    --space-section: 5rem;
    --space-card: 2rem;
    --space-gap: 1.5rem;
    --transition: 0.45s cubic-bezier(0.22, 1, 0.36, 1);
    --heading-weight: 700;
    --body-line-height: 1.6;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background-color: #fffdf7; }
h1, h2, h3, h4 { font-weight: var(--heading-weight); text-shadow: 0 1px 2px rgba(59,17,120,.14), 0 0 20px rgba(34,211,238,.20); }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); background-color: var(--color-surface); background-image: linear-gradient(180deg, rgba(124,58,237,.05), rgba(34,211,238,.06)); }
.card, [class*="card"] { border-radius: var(--radius-lg); box-shadow: var(--shadow-md); padding: var(--space-card); transition: var(--transition); background-color: #fffdf7; }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); box-shadow: 0 0 16px rgba(34,211,238,.28); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); text-shadow: 0 0 14px rgba(34,211,238,.25); }

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

/* news: featured-top */
/* 首篇横跨全宽 */
                .news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }
                .news-grid > *:first-child { grid-column: span 3; }

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

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

/* testimonials: stacked */
/* 垂直堆叠 */
                .testimonial-list { display: flex; flex-direction: column; gap: var(--space-gap); max-width: 720px; margin: 0 auto; }

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

/* faq: with-sidebar */
/* FAQ 左 + 联系信息右 */
                .faq-wrapper { display: grid; grid-template-columns: 2fr 1fr; gap: 2rem; }

/* 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: narrow-centered */
/* 窄版居中 */
            .page-main { max-width: 860px; margin: 0 auto; }

/* 条件性装饰 */
.card:hover, [class*="card"]:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: rgba(var(--rgb-accent), .55); }
a:not([class]):hover { color: var(--color-accent); text-shadow: 0 0 22px rgba(34,211,238,.55); }
.hero, [class*="hero"], section:first-of-type { background: linear-gradient(135deg, #3b1178 0%, #1b1440 52%, #7c3aed 100%); box-shadow: inset 0 0 90px rgba(34,211,238,.20), 0 0 44px rgba(124,58,237,.38); }
.card { border: 1px solid rgba(var(--rgb-accent), .28); }

/* 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; }
}