:root {
    --color-primary: #7c3aed;
    --color-primary-dark: #4c1d95;
    --color-accent: #a78bfa;
    --color-surface: #f5f3ff;
    --color-text: #1e1b2e;
    --rgb-primary: 124,58,237;
    --rgb-accent: 167,139,250;
    --radius-sm: 12px;
    --radius-md: 20px;
    --radius-lg: 28px;
    --radius-xl: 36px;
    --shadow-sm: 0 4px 8px rgba(30, 27, 46, 0.06);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.05), 0 20px 40px -10px rgba(30, 27, 46, 0.12);
    --shadow-lg: 0 6px 12px rgba(0, 0, 0, 0.06), 0 30px 60px -12px rgba(76, 29, 149, 0.18);
    --space-section: 5rem;
    --space-card: 2rem;
    --space-gap: 1.5rem;
    --transition: 0.45s cubic-bezier(0.25, 0.4, 0.2, 1);
    --heading-weight: 800;
    --body-line-height: 1.6;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background-color: #faf9ff; }
h1, h2, h3, h4 { font-weight: var(--heading-weight); color: #1e1b2e; }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); background-color: #ffffff; }
.card, [class*="card"] { border-radius: var(--radius-lg); box-shadow: var(--shadow-md); padding: var(--space-card); transition: var(--transition); background-color: #ffffff; border: 1px solid rgba(124, 58, 237, 0.08); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background-color: var(--color-primary); color: #ffffff; border: none; box-shadow: 0 4px 12px rgba(124, 58, 237, 0.2); }
.btn:hover, button[class*="btn"]:hover, a[class*="btn"]:hover { background-color: var(--color-primary-dark); box-shadow: 0 6px 20px rgba(124, 58, 237, 0.3); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); text-decoration: none; border-bottom: 1px solid transparent; }
a:not([class]):hover { color: var(--color-primary-dark); border-bottom-color: var(--color-primary-dark); }

/* ========== 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; background: linear-gradient(145deg, #ffffff, #faf9ff); }

/* features: grid-3 */
.feature-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }
.feature-list .card { background: linear-gradient(145deg, #ffffff, #f5f3ff); }

/* 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); }
.testimonial-list .card { background: linear-gradient(145deg, #ffffff, #faf9ff); border-left: 4px solid var(--color-primary); }

/* 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%); } }
                .partner-grid .card { background: transparent; border: 1px solid rgba(124, 58, 237, 0.1); }

/* faq: two-column */
.faq-list { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-gap); }
.faq-list .card { background: #ffffff; border-radius: var(--radius-xl); }

/* stats: grid-3 */
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); text-align: center; }
.stats-grid .card { background: linear-gradient(145deg, #7c3aed, #4c1d95); color: #ffffff; box-shadow: 0 4px 8px rgba(0, 0, 0, 0.05), 0 20px 40px -10px rgba(76, 29, 149, 0.25); }
.stats-grid .card * { color: #ffffff; }

/* 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:hover, [class*="card"]:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: rgba(124, 58, 237, 0.25); }
.hero, [class*="hero"], section:first-of-type { background: linear-gradient(145deg, #1e1b2e, #2d2a44); color: #ffffff; }
.hero *, [class*="hero"] *, section:first-of-type * { color: #f5f3ff; }
.hero h1, [class*="hero"] h1, section:first-of-type h1 { color: #ffffff; text-shadow: 0 2px 20px rgba(167, 139, 250, 0.3); }
.hero .btn, [class*="hero"] .btn, section:first-of-type .btn { background-color: #a78bfa; color: #1e1b2e; box-shadow: 0 4px 20px rgba(167, 139, 250, 0.3); }
.hero .btn:hover, [class*="hero"] .btn:hover, section:first-of-type .btn:hover { background-color: #c4b5fd; }
header, .header, .navbar { background: transparent; }

/* 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; }
}