:root {
    --color-primary: #0ea5e9;
    --color-primary-dark: #0369a1;
    --color-accent: #22c55e;
    --color-surface: #fffbeb;
    --color-text: #06243a;
    --rgb-primary: 14,165,233;
    --rgb-accent: 34,197,94;
    --radius-sm: 0;
    --radius-md: 6px;
    --radius-lg: 12px;
    --radius-xl: 18px;
    --shadow-sm: 0 1px 0 rgba(2, 132, 199, .18), 0 8px 22px rgba(2, 132, 199, .12);
    --shadow-md: 0 10px 24px rgba(2, 132, 199, .18), 0 2px 8px rgba(2, 132, 199, .10), 0 1px 0 rgba(255, 255, 255, .55) inset;
    --shadow-lg: 0 18px 50px rgba(3, 105, 161, .22), 0 7px 20px rgba(2, 132, 199, .18), 0 2px 10px rgba(2, 132, 199, .10), 0 1px 0 rgba(255, 255, 255, .60) inset;
    --space-section: 5rem;
    --space-card: 2rem;
    --space-gap: 1.5rem;
    --transition: 0.5s cubic-bezier(.22, 1, .36, 1);
    --heading-weight: 800;
    --body-line-height: 1.7;
    --ring: rgba(14,165,233,.35);
    --soft-ink: rgba(6, 36, 58, .12);
}

body { color: var(--color-text); line-height: var(--body-line-height); background: radial-gradient(1200px 600px at 20% -10%, rgba(14,165,233,.10) 0%, rgba(14,165,233,0) 55%), radial-gradient(900px 520px at 90% 10%, rgba(34,197,94,.10) 0%, rgba(34,197,94,0) 60%), linear-gradient(180deg, rgba(255,251,235,1) 0%, rgba(255,255,255,1) 40%, rgba(255,251,235,.65) 100%); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); text-shadow: 0 1px 0 rgba(255,255,255,.6), 0 10px 30px rgba(3,105,161,.10); }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); }
.card, [class*="card"] {
    border-radius: var(--radius-lg);
    box-shadow:
        0 1px 0 rgba(255,255,255,.65) inset,
        0 10px 30px rgba(3,105,161,.18),
        0 3px 14px rgba(14,165,233,.14),
        0 2px 8px rgba(6,36,58,.08);
    padding: var(--space-card);
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), background var(--transition);
    background:
        linear-gradient(180deg, rgba(255,255,255,.92) 0%, rgba(255,251,235,.78) 100%);
    border: 1px solid rgba(var(--rgb-primary), .14);
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition), border-color var(--transition);
    box-shadow: 0 10px 26px rgba(3,105,161,.18), 0 2px 10px rgba(14,165,233,.14);
}
a:not([class]) {
    color: var(--color-primary);
    transition: transform var(--transition), color var(--transition), text-shadow var(--transition);
    text-shadow: 0 1px 0 rgba(255,255,255,.6);
    outline-color: var(--ring);
    caret-color: var(--color-primary);
    accent-color: var(--color-primary);
}

/* ========== 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-2 */
.feature-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: calc(var(--space-gap) * 1.5); }

/* 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: with-sidebar */
/* FAQ 左 + 联系信息右 */
                .faq-wrapper { display: grid; grid-template-columns: 2fr 1fr; gap: 2rem; }

/* stats: grid-4 */
.stats-grid { display: grid; grid-template-columns: repeat(4, 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 */
.hero, [class*="hero"], section:first-of-type {
    background:
        linear-gradient(90deg, rgba(255,255,255,.70) 0%, rgba(255,255,255,.10) 40%, rgba(255,255,255,.40) 100%),
        radial-gradient(900px 420px at 18% 18%, rgba(14,165,233,.32) 0%, rgba(14,165,233,0) 55%),
        radial-gradient(760px 380px at 85% 30%, rgba(34,197,94,.26) 0%, rgba(34,197,94,0) 58%),
        linear-gradient(135deg, rgba(14,165,233,.95) 0%, rgba(3,105,161,.95) 55%, rgba(2,132,199,.86) 100%);
    border-top: 1px solid rgba(255,255,255,.28);
    border-bottom: 1px solid rgba(255,255,255,.18);
    box-shadow: 0 18px 70px rgba(3,105,161,.22);
}
.card { border: 1px solid rgba(var(--rgb-primary), .14); background-clip: padding-box; }

/* 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; --transition: 0.45s cubic-bezier(.18, 1, .32, 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; }
}