:root {
    --color-primary: #0b5bd3;
    --color-primary-dark: #0a43a6;
    --color-accent: #7c3aed;
    --color-surface: #fff7e6;
    --color-text: #0f172a;

    --rgb-primary: 11,91,211;
    --rgb-accent: 124,58,237;

    --radius-sm: 3px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 22px;

    --shadow-sm: 0 1px 0 rgba(15, 23, 42, .06), 0 10px 24px rgba(11, 91, 211, .10);
    --shadow-md: 0 10px 28px rgba(2, 6, 23, .10), 0 3px 10px rgba(11, 91, 211, .10), 0 1px 0 rgba(255, 255, 255, .65) inset;
    --shadow-lg: 0 24px 60px rgba(2, 6, 23, .18), 0 10px 26px rgba(11, 91, 211, .16), 0 1px 0 rgba(255, 255, 255, .70) inset;

    --space-section: 4rem;
    --space-card: 1.5rem;
    --space-gap: 1.25rem;

    --transition: 0.52s cubic-bezier(.2,.8,.2,1);
    --heading-weight: 750;
    --body-line-height: 1.75;
}

body { 
    color: var(--color-text); 
    line-height: var(--body-line-height);
    background:
        radial-gradient(900px 420px at 12% 0%, rgba(11, 91, 211, .10) 0%, rgba(11, 91, 211, 0) 60%),
        radial-gradient(760px 360px at 86% 14%, rgba(124, 58, 237, .12) 0%, rgba(124, 58, 237, 0) 58%),
        linear-gradient(180deg, rgba(255,255,255,.75) 0%, rgba(255,247,230,.75) 100%);
}

h1, h2, h3, h4 { font-weight: var(--heading-weight); }

section, .section { 
    padding-top: var(--space-section); 
    padding-bottom: var(--space-section); 
    background-image:
        linear-gradient(90deg, rgba(11, 91, 211, .06) 0%, rgba(11, 91, 211, 0) 36%, rgba(124, 58, 237, .08) 72%, rgba(124, 58, 237, 0) 100%);
    background-size: 100% 100%;
}

.card, [class*="card"] { 
    border-radius: var(--radius-lg); 
    padding: var(--space-card); 
    transition: var(--transition);
    box-shadow:
        0 1px 0 rgba(255,255,255,.72) inset,
        0 12px 26px rgba(2, 6, 23, .12),
        0 2px 10px rgba(11, 91, 211, .12);
    border-width: 1px;
    border-style: solid;
    border-color: rgba(15, 23, 42, .08);
    background:
        linear-gradient(180deg, rgba(255,255,255,.88) 0%, rgba(255,247,230,.72) 100%);
}

.btn, button[class*="btn"], a[class*="btn"] { 
    border-radius: var(--radius-md); 
    transition: var(--transition); 
    border-width: 1px;
    border-style: solid;
    border-color: rgba(11, 91, 211, .24);
    box-shadow:
        0 1px 0 rgba(255,255,255,.65) inset,
        0 10px 20px rgba(11, 91, 211, .14);
    background:
        linear-gradient(180deg, rgba(11, 91, 211, .96) 0%, rgba(10, 67, 166, .96) 100%);
    color: #fff;
}

a:not([class]) { 
    color: var(--color-primary); 
    transition: var(--transition); 
    text-decoration-thickness: 2px;
    text-underline-offset: 0.24em;
    text-shadow: 0 1px 0 rgba(255,255,255,.35);
}

a:not([class]):hover { 
    opacity: .94;
    filter: saturate(1.05);
}

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

/* news: grid-3 */
/* 三列等宽网格 */
                .news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }

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

/* hero: centered */
.hero-content { text-align: center; max-width: 800px; margin: 0 auto; }

/* testimonials: carousel */
/* 单条轮播 */
                .testimonial-list { display: flex; overflow: hidden; } 
                .testimonial-list > * { flex: 0 0 100%; }

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

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

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

/* cta: card-style */
.cta-inner { 
    background:
        linear-gradient(135deg, rgba(11, 91, 211, .14) 0%, rgba(124, 58, 237, .16) 55%, rgba(255, 247, 230, .86) 100%),
        radial-gradient(520px 220px at 18% 20%, rgba(11, 91, 211, .22) 0%, rgba(11, 91, 211, 0) 62%),
        radial-gradient(560px 260px at 82% 40%, rgba(124, 58, 237, .20) 0%, rgba(124, 58, 237, 0) 60%);
    border-radius: var(--radius-xl); 
    padding: 3rem; 
    text-align: center; 
    border-width: 1px;
    border-style: solid;
    border-color: rgba(15, 23, 42, .09);
    box-shadow:
        0 1px 0 rgba(255,255,255,.65) inset,
        0 18px 42px rgba(2, 6, 23, .16),
        0 10px 26px rgba(124, 58, 237, .15);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

/* 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(-5px); 
    box-shadow:
        0 1px 0 rgba(255,255,255,.72) inset,
        0 30px 74px rgba(2, 6, 23, .22),
        0 12px 34px rgba(11, 91, 211, .22),
        0 3px 10px rgba(124, 58, 237, .14);
    border-color: rgba(11, 91, 211, .22);
}

header, .header, .navbar { 
    background: transparent; 
    backdrop-filter: blur(0px);
    -webkit-backdrop-filter: blur(0px);
}

/* 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; }
}