:root {
    --color-primary: #3a86ff;
    --color-primary-dark: #114b8f;
    --color-accent: #ff4d6d;
    --color-surface: #f7fbff;
    --color-text: #0c1b33;
    --rgb-primary: 58,134,255;
    --rgb-accent: 255,77,109;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 18px;
    --radius-xl: 28px;
    --shadow-sm: 0 2px 10px rgba(17,75,143,.12);
    --shadow-md:
        0 10px 26px rgba(17,75,143,.10),
        0 2px 6px rgba(58,134,255,.10);
    --shadow-lg:
        0 18px 44px rgba(17,75,143,.14),
        0 8px 18px rgba(58,134,255,.12),
        0 1px 2px rgba(255,255,255,.65) inset;
    --space-section: 2rem;
    --space-card: 1rem;
    --space-gap: 0.75rem;
    --transition: 0.52s cubic-bezier(.2,.8,.2,1);
    --heading-weight: 800;
    --body-line-height: 1.7;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background:
    radial-gradient(1200px 600px at 10% -10%, rgba(var(--rgb-primary),.12), transparent 60%),
    radial-gradient(900px 520px at 95% 0%, rgba(var(--rgb-accent),.10), transparent 55%),
    linear-gradient(180deg, #f5f8ff 0%, #f3f6fb 100%);
}
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 14px 30px rgba(17,75,143,.12),
        0 3px 10px rgba(58,134,255,.10),
        0 1px 0 rgba(255,255,255,.65) inset;
    padding: var(--space-card);
    transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition);
    background:
        linear-gradient(180deg, rgba(255,255,255,.96) 0%, rgba(255,255,255,.90) 100%);
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition), border-color var(--transition);
}
a:not([class]) { color: var(--color-primary); transition: var(--transition); }
a:not([class]):hover { color: var(--color-accent); }

.page-main { max-width: 1200px; margin: 0 auto; }

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

/* news: featured-left */
/* 左大右小 (1大+2小) */
                .news-grid { display: grid; grid-template-columns: 2fr 1fr; grid-template-rows: auto auto; gap: var(--space-gap); }
                .news-grid > *:first-child { grid-row: span 2; }

/* features: grid-2 */
.feature-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: calc(var(--space-gap) * 1.5); }

/* hero: centered */
.hero-content { text-align: center; max-width: 800px; margin: 0 auto; }

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

/* partners: scroll */
/* 自动滚动 */
                .partner-grid { display: flex; gap: 2rem; overflow: hidden; animation: partnerScroll 20s linear infinite; }
                @keyframes partnerScroll { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

/* 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; text-shadow: 0 10px 22px rgba(17,75,143,.14); }

/* cta: card-style */
.cta-inner {
    background:
        radial-gradient(900px 320px at 15% 0%, rgba(var(--rgb-primary),.20), transparent 55%),
        radial-gradient(900px 380px at 95% 10%, rgba(var(--rgb-accent),.14), transparent 58%),
        linear-gradient(180deg, rgba(255,255,255,.98) 0%, rgba(247,251,255,.92) 100%);
    border-radius: var(--radius-xl);
    padding: 3rem;
    text-align: center;
    box-shadow:
        0 24px 64px rgba(17,75,143,.14),
        0 10px 22px rgba(58,134,255,.10),
        0 1px 0 rgba(255,255,255,.8) inset;
}

/* 条件性装饰 */
.card:hover, [class*="card"]:hover {
    transform: translateY(-6px);
    box-shadow:
        0 26px 70px rgba(17,75,143,.18),
        0 12px 28px rgba(58,134,255,.14),
        0 2px 6px rgba(255,255,255,.7) inset;
}
.hero, [class*="hero"], section:first-of-type {
    background:
        radial-gradient(1100px 520px at 18% 10%, rgba(var(--rgb-primary),.35), transparent 60%),
        radial-gradient(900px 460px at 90% 20%, rgba(var(--rgb-accent),.26), transparent 56%),
        linear-gradient(135deg, #2f7fff 0%, #0b3a7a 55%, #05224a 100%);
}
.card { border-left: 4px solid transparent; border-image:
    linear-gradient(180deg, rgba(58,134,255,.95) 0%, rgba(255,77,109,.90) 55%, rgba(17,75,143,.95) 100%) 1; }

/* Keep transparent header style but add subtle depth without changing layout */
header, .header, .navbar {
    background: transparent;
    box-shadow: none;
}

/* 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; }
}