:root {
    --color-primary: #1e7bff;
    --color-primary-dark: #0b2a66;
    --color-accent: #24d18f;
    --color-surface: #f3f7ff;
    --color-text: #0f1a2b;
    --rgb-primary: 30,123,255;
    --rgb-accent: 36,209,143;
    --radius-sm: 0px;
    --radius-md: 3px;
    --radius-lg: 4px;
    --radius-xl: 6px;
    --shadow-sm: none;
    --shadow-md: none;
    --shadow-lg: none;
    --space-section: 5rem;
    --space-card: 2rem;
    --space-gap: 1.75rem;
    --transition: 220ms cubic-bezier(0.22, 1, 0.36, 1);
    --heading-weight: 800;
    --body-line-height: 1.65;
}

body { color: var(--color-text); line-height: var(--body-line-height); background: #ffffff; }
h1, h2, h3, h4 { font-weight: var(--heading-weight); color: #0d1630; }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); }
.card, [class*="card"] {
    border-radius: var(--radius-lg);
    box-shadow: none;
    padding: var(--space-card);
    transition: color var(--transition), background-color var(--transition), border-color var(--transition), transform var(--transition);
}
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: background-color var(--transition), border-color var(--transition), color var(--transition), transform var(--transition); }
a:not([class]) {
    color: var(--color-primary);
    transition: color var(--transition), text-decoration-color var(--transition), background-color var(--transition);
    text-decoration-color: rgba(var(--rgb-primary), .35);
    text-shadow: none;
}
a:not([class]):hover { text-decoration-color: rgba(var(--rgb-primary), .8); }

:focus { outline: 2px solid rgba(var(--rgb-primary), .45); outline-offset: 2px; }

.card, [class*="card"] { border: 1px solid rgba(13, 22, 48, .12); }
.card * { caret-color: var(--color-accent); accent-color: var(--color-accent); }

.card { background: var(--color-surface); }
[data-accent] { color: var(--color-accent); }

section:first-of-type { background: transparent; }

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

/* news: featured-top */
/* 首篇横跨全宽 */
                .news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }
                .news-grid > *:first-child { grid-column: span 3; }

/* features: centered */
/* 居中大卡片 */
                .feature-list { display: flex; flex-direction: column; align-items: center; gap: calc(var(--space-gap) * 2); max-width: 720px; margin: 0 auto; }

/* hero: left-aligned */
.hero-content { text-align: left; max-width: 600px; }

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

/* partners: grid-6 */
.partner-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: var(--space-gap); align-items: center; }

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

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

/* cta: card-style */
.cta-inner { background: var(--color-surface); border-radius: var(--radius-xl); padding: 3rem; text-align: center; border: 1px solid rgba(13, 22, 48, .12); }

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

/* 条件性装饰 */
.hero, [class*="hero"], section:first-of-type {
    background: linear-gradient(135deg, #0b2a66 0%, #0f4aa8 35%, #0c2a2a 100%);
    color: #eaf2ff;
}
.hero, [class*="hero"], section:first-of-type { border-top: 1px solid rgba(255,255,255,.12); border-bottom: 1px solid rgba(255,255,255,.12); }
.hero a:not([class]), [class*="hero"] a:not([class]) { color: #7fc0ff; text-decoration-color: rgba(127, 192, 255, .45); }
.hero a:not([class]):hover, [class*="hero"] a:not([class]):hover { text-decoration-color: rgba(127, 192, 255, .85); }

.card { border: 1px solid rgba(var(--rgb-primary), .22); background: #f7fbff; }
header, .header, .navbar { background: transparent; border-bottom: 1px solid rgba(13, 22, 48, .10); }
header, .header, .navbar { backdrop-filter: none; -webkit-backdrop-filter: none; }

/* 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: 0.9rem; }
    .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; }
}