:root {
    --color-primary: #0b3a53;
    --color-primary-dark: #061b2b;
    --color-accent: #ff3d7f;
    --color-surface: #f6f7fb;
    --color-text: #0a1220;
    --rgb-primary: 11,58,83;
    --rgb-accent: 255,61,127;
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 0px;
    --radius-xl: 6px;
    --shadow-sm: none;
    --shadow-md: none;
    --shadow-lg: none;
    --space-section: 5rem;
    --space-card: 2rem;
    --space-gap: 1.5rem;
    --transition: 420ms cubic-bezier(0.2, 0.85, 0.25, 1);
    --heading-weight: 800;
    --body-line-height: 1.65;
}

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-md); box-shadow: none; padding: var(--space-card); transition: var(--transition); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-sm); transition: var(--transition); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); }

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

/* news: list-view */
/* 列表模式 (图左文右) */
                .news-grid { display: flex; flex-direction: column; gap: var(--space-gap); }
                .news-grid .card { display: grid; grid-template-columns: 280px 1fr; }

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

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

/* 条件性装饰 */
a:not([class]):hover { color: var(--color-accent); text-shadow: none; }
.hero, [class*="hero"], section:first-of-type { background: #0f172a; }
.card { border-left: 3px solid #ff3d7f; border-radius: 4px; }

/* Visual identity: flat-solid + high-contrast borders */
.card, [class*="card"] {
    background: #ffffff;
    border: 2px solid rgba(6, 27, 43, 0.22);
    outline: 0;
}

.hero, [class*="hero"], section:first-of-type { color: #eaf2ff; }

.news-grid .card { background: #f7f7ff; border-color: rgba(6, 27, 43, 0.24); }
.news-grid .card { border-left-color: #0ea5e9; }

.feature-list > * { background: #ffffff; border: 2px solid rgba(6, 27, 43, 0.22); border-radius: 4px; }

.hero-inner .card { background: #0b3a53; border-color: rgba(234, 242, 255, 0.18); }
.hero-inner .card { border-left-color: #ff3d7f; }

.testimonial-list .card { background: #fff6fb; border-color: rgba(6, 27, 43, 0.18); }
.testimonial-list .card { border-left-color: #22c55e; }

.partner-grid .card { background: #f3fbff; border-color: rgba(6, 27, 43, 0.18); }
.partner-grid .card { border-left-color: #0ea5e9; }

.faq-list .card { background: #f6f7fb; border-color: rgba(6, 27, 43, 0.20); }
.faq-list .card { border-left-color: #f59e0b; }

.stats-grid .card { background: #ffffff; border-color: rgba(6, 27, 43, 0.20); }
.stats-grid .card { border-left-color: #8b5cf6; }

.cta-inner .card { background: #071a2a; border-color: rgba(255, 255, 255, 0.20); }
.cta-inner .card { border-left-color: #ff3d7f; }

/* 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; }
}