:root {
    --color-primary: #7c3aed;
    --color-primary-dark: #4c1d95;
    --color-accent: #fbbf24;
    --color-surface: #1a1a2e;
    --color-text: #f1f5f9;
    --rgb-primary: 124,58,237;
    --rgb-accent: 251,191,36;
    --radius-sm: 10px;
    --radius-md: 18px;
    --radius-lg: 26px;
    --radius-xl: 34px;
    --shadow-sm: 0 4px 12px rgba(0,0,0,.4), 0 1px 3px rgba(var(--rgb-primary),.18);
    --shadow-md: 0 12px 32px rgba(0,0,0,.45), 0 4px 16px rgba(var(--rgb-primary),.2);
    --shadow-lg: 0 28px 70px rgba(0,0,0,.5), 0 10px 30px rgba(var(--rgb-primary),.22);
    --space-section: 2.2rem;
    --space-card: 1.1rem;
    --space-gap: 0.85rem;
    --transition: 0.35s cubic-bezier(0.22, 1, 0.36, 1);
    --heading-weight: 800;
    --body-line-height: 1.7;
}

body { background: radial-gradient(1200px 600px at 50% -10%, #1e1b4b 0%, #0f0f1a 60%); color: var(--color-text); line-height: var(--body-line-height); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); text-shadow: 0 2px 24px rgba(var(--rgb-primary),.35); }
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), inset 0 0 0 1px rgba(251,191,36,.08); padding: var(--space-card); transition: var(--transition); background: linear-gradient(145deg, #1f1f3a 0%, #15152a 100%); color: var(--color-text); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%); color: #fff; box-shadow: 0 6px 20px rgba(var(--rgb-primary),.4); }
a:not([class]) { color: var(--color-accent); transition: var(--transition); }

/* 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; }

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

/* 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; }

.testimonial-list { column-count: 2; column-gap: var(--space-gap); }
.testimonial-list > * { break-inside: avoid; margin-bottom: var(--space-gap); }

.partner-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: calc(var(--space-gap) * 1.5); align-items: center; }

.faq-list { max-width: 800px; margin: 0 auto; }

.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); text-align: center; }

.cta-section { background: linear-gradient(135deg, #7c3aed 0%, #4c1d95 100%); color: #fff; padding: 4rem 2rem; }

.page-main { max-width: 860px; margin: 0 auto; }

a:not([class]):hover { color: #fff; }
header, .header, .navbar { box-shadow: 0 8px 28px rgba(0,0,0,.55), 0 1px 0 rgba(124,58,237,.18); }

@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; }
}