:root {
    --color-primary: #0b3b66;
    --color-primary-dark: #072c49;
    --color-accent: #ff4d6d;
    --color-surface: #f6fbff;
    --color-text: #0a1220;
    --rgb-primary: 11,59,102;
    --rgb-accent: 255,77,109;
    --radius-sm: 0px;
    --radius-md: 2px;
    --radius-lg: 3px;
    --radius-xl: 4px;
    --shadow-sm: 4px 4px 0 rgba(7,44,73,.22), 0 10px 24px rgba(11,59,102,.18);
    --shadow-md: 4px 4px 0 rgba(7,44,73,.26), 0 16px 42px rgba(11,59,102,.16);
    --shadow-lg: 4px 4px 0 rgba(7,44,73,.32), 0 22px 60px rgba(11,59,102,.18);
    --space-section: 4rem;
    --space-card: 1.5rem;
    --space-gap: 1.25rem;
    --transition: 0.15s cubic-bezier(.2,.8,.2,1);
    --heading-weight: 700;
    --body-line-height: 1.6;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background: var(--color-surface); }
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:
        4px 4px 0 rgba(7,44,73,.28),
        0 2px 0 rgba(255,255,255,.6) inset,
        0 18px 40px rgba(11,59,102,.14);
    padding: var(--space-card);
    transition: var(--transition);
    border: 2px solid rgba(7,44,73,.18);
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: var(--transition);
    border: 2px solid rgba(11,59,102,.22);
}
a:not([class]) { color: var(--color-primary); transition: var(--transition); text-shadow: 0 1px 0 rgba(255,255,255,.55); }

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

/* 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: inline */
/* 水平排列 */
                .stats-grid { display: flex; justify-content: center; gap: 3rem; }

/* cta: full-bg */
.cta-section {
    background:
        radial-gradient(1200px 420px at 15% 0%, rgba(255,77,109,.40), transparent 55%),
        radial-gradient(900px 360px at 85% 10%, rgba(56,189,248,.28), transparent 60%),
        linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: #ffffff;
    padding: 4rem 2rem;
    border-top: 3px solid rgba(255,255,255,.14);
    border-bottom: 3px solid rgba(0,0,0,.12);
}

/* Page Layout: full-width */
/* 无侧边栏, 全宽 */
            .page-main { max-width: 1200px; margin: 0 auto; }

/* 条件性装饰 */
.card:hover, [class*="card"]:hover {
    transform: translateY(-4px);
    box-shadow:
        6px 6px 0 rgba(7,44,73,.34),
        0 3px 0 rgba(255,255,255,.7) inset,
        0 26px 70px rgba(11,59,102,.20);
    border-color: rgba(255,77,109,.28);
}
.hero, [class*="hero"], section:first-of-type {
    background:
        radial-gradient(900px 420px at 10% 20%, rgba(255,77,109,.22), transparent 55%),
        radial-gradient(900px 420px at 90% 15%, rgba(56,189,248,.18), transparent 55%),
        linear-gradient(135deg, #0b3b66, #072c49);
}
.card { border-left: 3px solid #ff4d6d; }

/* 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; }
}