:root {
    --color-primary: #0b5c7a;
    --color-primary-dark: #063f54;
    --color-accent: #2dd4bf;
    --color-surface: #f6f1ff;
    --color-text: #0b1220;
    --rgb-primary: 11,92,122;
    --rgb-accent: 45,212,191;
    --radius-sm: 10px;
    --radius-md: 18px;
    --radius-lg: 28px;
    --radius-xl: 40px;
    --shadow-sm: none;
    --shadow-md: 0 12px 28px rgba(7, 24, 39, 0.10), 0 2px 10px rgba(7, 24, 39, 0.06);
    --shadow-lg: 0 22px 50px rgba(7, 24, 39, 0.16), 0 6px 18px rgba(7, 24, 39, 0.10), inset 0 1px 0 rgba(255,255,255,0.65);
    --space-section: 5rem;
    --space-card: 2rem;
    --space-gap: 1.5rem;
    --transition: 0.5s cubic-bezier(.2,.8,.2,1);
    --heading-weight: 700;
    --body-line-height: 1.7;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background: radial-gradient(1100px 600px at 15% -10%, rgba(45,212,191,0.16), transparent 60%), radial-gradient(900px 520px at 95% 10%, rgba(11,92,122,0.14), transparent 55%), linear-gradient(180deg, #ffffff 0%, #fbfafc 60%, var(--color-surface) 100%); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); text-shadow: 0 1px 0 rgba(255,255,255,0.65); }
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(180deg, rgba(255,255,255,0.86) 0%, rgba(246,241,255,0.55) 100%); border: 1px solid rgba(11,92,122,0.10); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); box-shadow: 0 10px 26px rgba(6,63,84,0.16), 0 2px 10px rgba(6,63,84,0.10), inset 0 1px 0 rgba(255,255,255,0.55); border: 1px solid rgba(45,212,191,0.28); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); text-shadow: 0 1px 0 rgba(255,255,255,0.5); }

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

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

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

/* 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-4 */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); text-align: center; }

/* cta: full-bg */
.cta-section { background: linear-gradient(135deg, #0b5c7a 0%, #063f54 55%, #0ea5e9 130%); color: #ffffff; padding: 4rem 2rem; box-shadow: 0 -2px 0 rgba(45,212,191,0.18) inset, 0 28px 70px rgba(6,63,84,0.22); }

/* Page Layout: narrow-centered */
/* 窄版居中 */
            .page-main { max-width: 860px; margin: 0 auto; }

/* 条件性装饰 */
.hero, [class*="hero"], section:first-of-type { background: linear-gradient(90deg, rgba(11,92,122,0.98) 0%, rgba(11,92,122,0.75) 28%, rgba(45,212,191,0.22) 58%, rgba(255,255,255,0.10) 100%), radial-gradient(900px 520px at 15% 20%, rgba(45,212,191,0.35), transparent 60%), radial-gradient(800px 520px at 95% 0%, rgba(251,191,36,0.18), transparent 55%); border-radius: var(--radius-xl); box-shadow: 0 30px 90px rgba(6,63,84,0.22), 0 10px 30px rgba(6,63,84,0.14), inset 0 1px 0 rgba(255,255,255,0.45); }
header, .header, .navbar { box-shadow: 0 10px 30px rgba(7,24,39,.10), 0 2px 10px rgba(7,24,39,.07), inset 0 1px 0 rgba(255,255,255,0.55); background: linear-gradient(180deg, rgba(255,255,255,0.78) 0%, rgba(246,241,255,0.62) 100%); border-bottom: 1px solid rgba(11,92,122,0.12); }

/* 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; --radius-lg: 22px; --radius-md: 16px; --transition: 0.45s cubic-bezier(.2,.85,.2,1); }
    .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; }
}