:root {
    --color-primary: #6d28d9;
    --color-primary-dark: #4c1d95;
    --color-accent: #f472b6;
    --color-surface: #faf7f5;
    --color-text: #1e1b2e;
    --rgb-primary: 109,40,217;
    --rgb-accent: 244,114,182;
    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 22px;
    --radius-xl: 28px;
    --shadow-sm: 0 1px 2px rgba(76,29,149,.06), 0 6px 14px -6px rgba(76,29,149,.10);
    --shadow-md: 0 2px 4px rgba(76,29,149,.05), 0 14px 30px -10px rgba(76,29,149,.16), 0 28px 56px -28px rgba(244,114,182,.22);
    --shadow-lg: 0 4px 10px rgba(76,29,149,.07), 0 28px 56px -14px rgba(76,29,149,.20), 0 56px 96px -40px rgba(244,114,182,.26);
    --space-section: 5rem;
    --space-card: 2rem;
    --space-gap: 1.5rem;
    --transition: 0.32s cubic-bezier(.22,1,.36,1);
    --heading-weight: 600;
    --body-line-height: 1.6;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background-color: var(--color-surface); background-image: radial-gradient(1200px 620px at 10% -10%, rgba(109,40,217,.10), transparent 62%), radial-gradient(920px 540px at 100% 0%, rgba(244,114,182,.13), transparent 58%); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); color: var(--color-primary-dark); }
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-color: #ffffff; background-image: linear-gradient(160deg, rgba(109,40,217,.045), rgba(244,114,182,.03) 55%, rgba(255,255,255,0) 100%); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); accent-color: var(--color-primary); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); caret-color: var(--color-accent); }

/* ========== 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; border-left-color: #6d28d9; box-shadow: var(--shadow-sm); background-image: linear-gradient(150deg, rgba(109,40,217,.07), rgba(255,255,255,0) 70%); }

/* features: grid-4 */
.feature-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); }
.feature-list .card { border-left-color: #0d9488; background-image: linear-gradient(150deg, rgba(13,148,136,.08), rgba(255,255,255,0) 72%); }

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

/* testimonials: grid-3 */
.testimonial-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }
.testimonial-list .card { border-left-color: #f472b6; background-image: linear-gradient(150deg, rgba(244,114,182,.10), rgba(255,255,255,0) 72%); }

/* partners: scroll */
/* 自动滚动 */
                .partner-grid { display: flex; gap: 2rem; overflow: hidden; animation: partnerScroll 20s linear infinite; opacity: .92; }
                @keyframes partnerScroll { 0% { transform: translateX(0); opacity: .92; } 100% { transform: translateX(-50%); opacity: .92; } }

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

/* stats: big-number */
/* 大数字居中 */
                .stats-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 2rem; }
                .stats-grid .stat-value { font-size: 3rem; color: var(--color-primary); text-shadow: 0 2px 10px rgba(109,40,217,.20); }

/* cta: centered */
.cta-inner { text-align: center; max-width: 700px; margin: 0 auto; }

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

/* 条件性装饰 */
.card { border-left: 3px solid var(--color-primary); }
header, .header, .navbar { box-shadow: 0 1px 0 rgba(30,27,46,.05), 0 10px 30px -16px rgba(76,29,149,.22), 0 1px 3px rgba(244,114,182,.10); background-color: rgba(250,247,245,.88); backdrop-filter: saturate(1.35) blur(9px); }

/* 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: 18px; --radius-xl: 22px; --shadow-md: 0 2px 4px rgba(76,29,149,.05), 0 10px 22px -10px rgba(76,29,149,.16); }
    .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; }
}