:root {
    --color-primary: #0b3a5c;
    --color-primary-dark: #061827;
    --color-accent: #ff3d7f;
    --color-surface: #fbfbff;
    --color-text: #07121f;
    --rgb-primary: 11,58,92;
    --rgb-accent: 255,61,127;
    --radius-sm: 10px;
    --radius-md: 12px;
    --radius-lg: 14px;
    --radius-xl: 16px;

    --shadow-sm: 0 2px 10px rgba(6,24,39,.10), 0 0 0 1px rgba(255,61,127,.12);
    --shadow-md:
        0 10px 26px rgba(6,24,39,.14),
        0 0 0 1px rgba(255,61,127,.16),
        0 0 22px rgba(255,61,127,.18);
    --shadow-lg:
        0 22px 55px rgba(6,24,39,.20),
        0 0 0 1px rgba(255,61,127,.22),
        0 0 40px rgba(255,61,127,.22);

    --space-section: 4rem;
    --space-card: 1.5rem;
    --space-gap: 1.25rem;
    --transition: 240ms cubic-bezier(.2,.9,.2,1);
    --heading-weight: 800;
    --body-line-height: 1.7;
}

body { color: var(--color-text); line-height: var(--body-line-height); text-shadow: 0 1px 0 rgba(255,255,255,.18); }
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 34px rgba(6,24,39,.14),
        0 0 0 1px rgba(255,61,127,.18),
        0 0 24px rgba(255,61,127,.22);
    padding: var(--space-card);
    transition: transform var(--transition), box-shadow var(--transition), background-color var(--transition), border-color var(--transition), filter var(--transition);
}

.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: transform var(--transition), box-shadow var(--transition), background-color var(--transition), border-color var(--transition), filter var(--transition);
    box-shadow:
        0 10px 26px rgba(6,24,39,.10),
        0 0 0 1px rgba(255,61,127,.16);
}

a:not([class]) { color: var(--color-primary); transition: var(--transition); text-shadow: 0 1px 0 rgba(255,255,255,.16); }

/* ========== 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: horizontal */
/* 水平滚动 */
                .feature-list { display: flex; gap: var(--space-gap); overflow-x: auto; scroll-snap-type: x mandatory; }
                .feature-list > * { flex: 0 0 300px; scroll-snap-align: start; }

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

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

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

/* stats: grid-4 */
.stats-grid { display: grid; grid-template-columns: repeat(4, 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 */
.hero, [class*="hero"], section:first-of-type {
    background:
        radial-gradient(900px 260px at 10% 10%, rgba(255,61,127,.28), transparent 55%),
        radial-gradient(800px 300px at 90% 20%, rgba(0,209,255,.18), transparent 58%),
        linear-gradient(135deg, #0a2c48 0%, #061827 55%, #1b1030 100%);
    border-top: 1px solid rgba(255,61,127,.22);
}

/* 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; }
}