:root {
    --color-primary: #7c3aed;
    --color-primary-dark: #5b21b6;
    --color-accent: #f97316;
    --color-surface: #f3ecff;
    --color-text: #1a1033;
    --color-bg: #f5f3f9;
    --rgb-primary: 124,58,237;
    --rgb-accent: 249,115,22;
    --rgb-card: 124,58,237;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 18px;
    --shadow-sm: 0 0 14px rgba(124,58,237,.16), 0 1px 3px rgba(26,16,51,.06);
    --shadow-md: 0 0 26px rgba(124,58,237,.26), 0 8px 20px rgba(26,16,51,.10);
    --shadow-lg: 0 0 42px rgba(236,72,153,.30), 0 16px 32px rgba(26,16,51,.14);
    --space-section: 3rem;
    --space-card: 1.25rem;
    --space-gap: 1rem;
    --transition: 0.42s cubic-bezier(0.22, 1, 0.36, 1);
    --heading-weight: 600;
    --body-line-height: 1.7;
}

/* 基础覆盖 */
body {
    color: var(--color-text);
    line-height: var(--body-line-height);
    background-color: var(--color-bg);
    background-image:
        radial-gradient(1100px 560px at 10% -12%, rgba(124,58,237,.12), transparent 62%),
        radial-gradient(900px 480px at 92% -4%, rgba(236,72,153,.12), transparent 64%);
}
h1, h2, h3, h4 {
    font-weight: var(--heading-weight);
    color: var(--color-primary-dark);
    text-shadow: 0 1px 0 rgba(255,255,255,.65), 0 0 22px rgba(124,58,237,.18);
}
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); }
.card, [class*="card"] {
    border-radius: var(--radius-lg);
    box-shadow: 0 0 24px rgba(var(--rgb-card), .32), 0 10px 22px rgba(26,16,51,.10);
    padding: var(--space-card);
    transition: var(--transition);
    background-color: rgba(255,255,255,.72);
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: var(--transition);
    box-shadow: 0 0 18px rgba(var(--rgb-accent), .30), 0 2px 6px rgba(26,16,51,.08);
    caret-color: var(--color-accent);
    accent-color: var(--color-primary);
}
a:not([class]) { color: var(--color-primary); transition: var(--transition); }

/* ========== 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); --rgb-card: 236,72,153; --card-accent: #ec4899; }
                .news-grid > *:first-child { grid-column: span 3; box-shadow: 0 0 34px rgba(236,72,153,.42), 0 12px 26px rgba(26,16,51,.12); animation: cardGlow 5.5s ease-in-out infinite; }

/* features: grid-4 */
.feature-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); --rgb-card: 13,148,136; --card-accent: #0d9488; }

/* hero: overlay */
/* 全屏背景+文字覆盖 */
                .hero { position: relative; min-height: 70vh; display: flex; align-items: center; }
                .hero-content { position: relative; z-index: 1; }

/* testimonials: grid-3 */
.testimonial-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); --rgb-card: 249,115,22; --card-accent: #f97316; }

/* partners: grid-4 */
.partner-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: calc(var(--space-gap) * 1.5); align-items: center; --rgb-card: 124,58,237; --card-accent: #7c3aed; }

/* faq: with-sidebar */
/* FAQ 左 + 联系信息右 */
                .faq-wrapper { display: grid; grid-template-columns: 2fr 1fr; gap: 2rem; --rgb-card: 217,70,239; --card-accent: #d946ef; }

/* stats: big-number */
/* 大数字居中 */
                .stats-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 2rem; --rgb-card: 245,158,11; --card-accent: #f59e0b; }
                .stats-grid .stat-value { font-size: 3rem; color: var(--color-primary); text-shadow: 0 0 26px rgba(124,58,237,.40), 0 0 48px rgba(236,72,153,.22); }

/* cta: card-style */
.cta-inner {
    background-color: var(--color-surface);
    background-image: linear-gradient(135deg, #ede9fe 0%, #fae8ff 46%, #ffedd5 100%);
    border-radius: var(--radius-xl);
    padding: 3rem;
    text-align: center;
    box-shadow: 0 0 40px rgba(236,72,153,.26), 0 16px 32px rgba(26,16,51,.10);
}

/* 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(--card-accent, var(--color-primary)); }

.card:hover, [class*="card"]:hover {
    box-shadow: 0 0 32px rgba(var(--rgb-card), .60), 0 14px 30px rgba(26,16,51,.16);
}
.btn:hover, button[class*="btn"]:hover, a[class*="btn"]:hover {
    box-shadow: 0 0 30px rgba(var(--rgb-accent), .58), 0 4px 12px rgba(26,16,51,.12);
}
a:not([class]):hover { color: var(--color-accent); }

@keyframes cardGlow {
    0%, 100% { box-shadow: 0 0 30px rgba(236,72,153,.34), 0 12px 26px rgba(26,16,51,.12); }
    50% { box-shadow: 0 0 46px rgba(236,72,153,.58), 0 12px 26px rgba(26,16,51,.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; }
    .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; }
}