:root {
    --color-primary: #24405c;
    --color-primary-dark: #16283b;
    --color-accent: #f59e0b;
    --color-surface: #eef3f8;
    --color-text: #16202b;
    --rgb-primary: 36,64,92;
    --rgb-accent: 245,158,11;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 22px;
    --shadow-sm: 0 1px 2px rgba(var(--rgb-primary),.16), 0 2px 6px rgba(var(--rgb-primary),.10);
    --shadow-md: 0 4px 10px -2px rgba(var(--rgb-primary),.18), 0 8px 22px -6px rgba(var(--rgb-primary),.14);
    --shadow-lg: 0 12px 30px -8px rgba(var(--rgb-primary),.30), 0 4px 14px rgba(var(--rgb-accent),.18);
    --space-section: 2rem;
    --space-card: 1rem;
    --space-gap: 0.75rem;
    --transition: 0.45s cubic-bezier(0.22, 0.61, 0.36, 1);
    --heading-weight: 800;
    --body-line-height: 1.75;
}

/* 基础覆盖 */
body {
    color: var(--color-text);
    line-height: var(--body-line-height);
    background-color: #eef3f8;
    background-image: linear-gradient(180deg, #f8fbfe 0%, #e9f1f8 52%, #dde8f2 100%);
    caret-color: var(--color-accent);
}
h1, h2, h3, h4 { font-weight: var(--heading-weight); color: var(--color-primary-dark); text-shadow: 0 1px 0 rgba(255,255,255,.7); }
section, .section {
    padding-top: var(--space-section);
    padding-bottom: var(--space-section);
    background-image: linear-gradient(180deg, rgba(var(--rgb-primary),.035) 0%, rgba(var(--rgb-accent),.030) 100%);
}
.card, [class*="card"] {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--space-card);
    transition: var(--transition);
    background-color: #ffffff;
    background-image: linear-gradient(160deg, #ffffff 0%, #f2f7fc 58%, #e6f0f9 100%);
    color: var(--color-text);
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: var(--transition);
    background-color: var(--color-primary-dark);
    background-image: linear-gradient(135deg, #2d4f72 0%, #1c3249 55%, #16283b 100%);
    color: #f8fbfe;
    box-shadow: 0 6px 16px -7px rgba(var(--rgb-primary),.62), inset 0 1px 0 rgba(255,255,255,.16);
    border-color: rgba(var(--rgb-accent),.35);
    outline-color: rgba(var(--rgb-accent),.55);
}
a:not([class]) {
    color: var(--color-primary);
    transition: var(--transition);
    text-decoration-color: rgba(var(--rgb-accent),.65);
}

/* ========== 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: horizontal */
/* 水平滚动 */
                .feature-list {
                    display: flex; gap: var(--space-gap); overflow-x: auto; scroll-snap-type: x mandatory;
                    background-image: linear-gradient(90deg, rgba(var(--rgb-primary),.06) 0%, rgba(var(--rgb-primary),0) 18%, rgba(var(--rgb-primary),0) 82%, rgba(var(--rgb-primary),.06) 100%);
                }
                .feature-list > * { flex: 0 0 300px; scroll-snap-align: start; }

/* hero: minimal */
.hero {
    padding: 2rem 0;
    border-radius: var(--radius-xl);
    background-image: linear-gradient(140deg, rgba(var(--rgb-primary),.12) 0%, rgba(var(--rgb-primary),0) 46%, rgba(var(--rgb-accent),.12) 100%);
}
.hero-content { max-width: 560px; color: var(--color-text); }

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

/* partners: grid-6 */
.partner-grid {
    display: grid; grid-template-columns: repeat(6, 1fr); gap: var(--space-gap); align-items: center;
    background-image: radial-gradient(circle at 50% 50%, rgba(var(--rgb-primary),.07) 0%, rgba(var(--rgb-primary),0) 72%);
}

/* faq: with-sidebar */
/* FAQ 左 + 联系信息右 */
                .faq-wrapper {
                    display: grid; grid-template-columns: 2fr 1fr; gap: 2rem;
                    border-radius: var(--radius-xl);
                    background-image: linear-gradient(115deg, rgba(var(--rgb-primary),.07) 0%, rgba(255,255,255,0) 55%, rgba(var(--rgb-accent),.07) 100%);
                }

/* stats: big-number */
/* 大数字居中 */
                .stats-grid {
                    display: flex; flex-wrap: wrap; justify-content: center; gap: 2rem;
                    background-image: radial-gradient(ellipse at 50% 0%, rgba(var(--rgb-accent),.10) 0%, rgba(var(--rgb-accent),0) 65%);
                }
                .stats-grid .stat-value {
                    font-size: 3rem;
                    color: var(--color-primary);
                    text-shadow: 0 2px 14px rgba(var(--rgb-accent),.38), 0 1px 0 rgba(255,255,255,.55);
                }

/* cta: split */
.cta-inner {
    display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 2rem;
    border-radius: var(--radius-xl);
    background-image: linear-gradient(120deg, rgba(var(--rgb-primary),.09) 0%, rgba(255,255,255,0) 50%, rgba(var(--rgb-accent),.13) 100%);
}

/* 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: var(--shadow-lg);
    border-color: rgba(var(--rgb-accent),.50);
}
.card { border: 1px solid rgba(var(--rgb-primary), .16); }
header, .header, .navbar {
    box-shadow: 0 4px 18px -7px rgba(var(--rgb-primary),.34), inset 0 -1px 0 rgba(var(--rgb-accent),.20);
    background-color: #f7fbfe;
    background-image: linear-gradient(180deg, #fdfeff 0%, #e8f0f8 100%);
}

/* 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; }
}