:root {
    --color-primary: #0f4c81;
    --color-primary-dark: #16325c;
    --color-accent: #ff6b6b;
    --color-surface: #f4f7ff;
    --color-text: #1b1f3b;
    --rgb-primary: 15,76,129;
    --rgb-accent: 255,107,107;
    --radius-sm: 12px;
    --radius-md: 18px;
    --radius-lg: 24px;
    --radius-xl: 34px;
    --shadow-sm: 0 3px 10px rgba(22,50,92,.08), 0 10px 24px -14px rgba(15,76,129,.18);
    --shadow-md: 0 8px 18px rgba(22,50,92,.08), 0 24px 48px -20px rgba(27,31,59,.18);
    --shadow-lg: 0 14px 30px rgba(22,50,92,.12), 0 32px 64px -24px rgba(255,107,107,.22);
    --space-section: 5rem;
    --space-card: 2rem;
    --space-gap: 1.5rem;
    --transition: 0.42s cubic-bezier(0.22, 1, 0.36, 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: linear-gradient(180deg, #eef4ff 0%, #fdfcff 52%, #f2fbf8 100%); caret-color: var(--color-accent); accent-color: var(--color-primary); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); color: #102347; text-shadow: 0 1px 0 rgba(255,255,255,.55); }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); }
.card, [class*="card"] { border-radius: var(--radius-lg); box-shadow: var(--shadow-md); padding: var(--space-card); transition: var(--transition); background: linear-gradient(155deg, #ffffff 0%, #f6f8ff 58%, #eefaf6 100%); border-color: rgba(var(--rgb-primary), .18); border-style: solid; backdrop-filter: blur(10px); filter: saturate(1.02); opacity: .98; }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background: linear-gradient(135deg, #ff6b6b 0%, #ff8e72 100%); color: #ffffff; border-color: rgba(22,50,92,.22); border-style: solid; box-shadow: 0 8px 18px rgba(255,107,107,.24), 0 18px 36px -20px rgba(22,50,92,.3); text-shadow: 0 1px 1px rgba(22,50,92,.25); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); text-decoration-color: rgba(var(--rgb-primary), .35); }

/* ========== 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); background: linear-gradient(160deg, #ffffff 0%, #eef5ff 70%, #fff1f1 100%); border-color: rgba(255,107,107,.22); }

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

/* hero: minimal */
.hero { padding: 2rem 0; } .hero-content { max-width: 560px; }

/* 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 24s ease-in-out infinite; }
                @keyframes partnerScroll { 0% { transform: translateX(0); filter: saturate(1) brightness(1); opacity: .94; } 100% { transform: translateX(-50%); filter: saturate(1.08) brightness(1.02); opacity: 1; } }

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

/* stats: grid-3 */
.stats-grid { display: grid; grid-template-columns: repeat(3, 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: wide */
/* 超宽 */
            .page-main { max-width: 1400px; margin: 0 auto; }

/* 条件性装饰 */
.card:hover, [class*="card"]:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); filter: saturate(1.06); opacity: 1; }
.hero, [class*="hero"], section:first-of-type { background: linear-gradient(135deg, #16325c 0%, #0f4c81 48%, #2aa198 100%); color: #f7fbff; text-shadow: 0 2px 10px rgba(9,18,36,.25); }
.card { border: 1px dashed rgba(var(--rgb-primary), .18); outline: 1px solid rgba(255,107,107,.08); outline-color: rgba(255,107,107,.14); }

/* 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; }
}