:root {
    --color-primary: #0b3a66;
    --color-primary-dark: #072a47;
    --color-accent: #22c55e;
    --color-surface: #f7fafc;
    --color-text: #0f172a;
    --rgb-primary: 11,58,102;
    --rgb-accent: 34,197,94;
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    --radius-xl: 14px;
    --shadow-sm: 0 1px 2px rgba(2, 6, 23, .08);
    --shadow-md: 0 2px 8px rgba(2, 6, 23, .10), 0 1px 0 rgba(255,255,255,.7) inset;
    --shadow-lg: 0 10px 24px rgba(2, 6, 23, .14), 0 2px 0 rgba(255,255,255,.75) inset;
    --space-section: 2rem;
    --space-card: 0.9rem;
    --space-gap: 0.85rem;
    --transition: 220ms cubic-bezier(0.2, 0.85, 0.25, 1);
    --heading-weight: 700;
    --body-line-height: 1.65;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); }
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 1px 0 rgba(255,255,255,.9) inset,
        0 2px 6px rgba(2,6,23,.10);
    padding: var(--space-card);
    transition: var(--transition);
    background: #ffffff;
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: var(--transition);
}
a:not([class]) { color: var(--color-primary); transition: var(--transition); }

a:not([class]):focus,
.btn:focus,
button[class*="btn"]:focus {
    outline: 2px solid rgba(34,197,94,.45);
    outline-offset: 2px;
}

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

/* news: masonry-2 */
/* 两列瀑布流 */
                .news-grid { column-count: 2; column-gap: var(--space-gap); }
                .news-grid .card { break-inside: avoid; margin-bottom: var(--space-gap); }

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

/* hero: split */
/* 左文右图 */
                .hero-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; align-items: center; }

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

/* partners: centered */
.partner-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 2rem; }

/* faq: single-column */
.faq-list { max-width: 800px; margin: 0 auto; }

/* stats: grid-3 */
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); text-align: center; }

/* cta: card-style */
.cta-inner {
    background:
        radial-gradient(1200px 420px at 20% 0%, rgba(34,197,94,.14), rgba(34,197,94,0) 60%),
        linear-gradient(180deg, #f8fbff 0%, #f3f7fb 100%);
    border-radius: var(--radius-xl);
    padding: 3rem;
    text-align: center;
    box-shadow:
        0 1px 0 rgba(255,255,255,.9) inset,
        0 10px 30px rgba(2,6,23,.10);
}

/* Page Layout: wide */
/* 超宽 */
            .page-main { max-width: 1400px; margin: 0 auto; }

/* 条件性装饰 */
.card:hover, [class*="card"]:hover {
    transform: translateY(-3px);
    box-shadow:
        0 1px 0 rgba(255,255,255,.9) inset,
        0 10px 22px rgba(2,6,23,.14),
        0 0 0 1px rgba(34,197,94,.20) inset;
}
a:not([class]):hover { color: #12a150; }
.hero, [class*="hero"], section:first-of-type {
    background:
        radial-gradient(900px 420px at 10% 0%, rgba(34,197,94,.22), rgba(34,197,94,0) 55%),
        linear-gradient(135deg, #0b3a66 0%, #072a47 55%, #08385e 100%);
}
header, .header, .navbar {
    box-shadow:
        0 1px 0 rgba(255,255,255,.8) inset,
        0 2px 10px rgba(2,6,23,.08);
}

/* 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: 0.9rem; --space-gap: 0.85rem; }
    .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; }
}