:root {
    --color-primary: #5b21b6;
    --color-primary-dark: #3b0a73;
    --color-accent: #f97316;
    --color-surface: #fff7ed;
    --color-text: #2e1065;
    --rgb-primary: 91,33,182;
    --rgb-accent: 249,115,22;
    --radius-sm: 2px;
    --radius-md: 3px;
    --radius-lg: 0px;
    --radius-xl: 4px;
    --shadow-sm: 4px 4px 0 rgba(91, 33, 182, .35);
    --shadow-md: 4px 4px 0 rgba(91, 33, 182, .35), 7px 7px 0 rgba(249, 115, 22, .18);
    --shadow-lg: 4px 4px 0 rgba(91, 33, 182, .45), 10px 10px 0 rgba(0,0,0,.10), 0 0 0 3px rgba(249, 115, 22, .10);
    --space-section: 2rem;
    --space-card: 1rem;
    --space-gap: 0.75rem;
    --transition: 0.15s cubic-bezier(0.2, 0.9, 0.2, 1);
    --heading-weight: 800;
    --body-line-height: 1.65;
}

body { color: var(--color-text); line-height: var(--body-line-height); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); }
.card, [class*="card"] {
    border-radius: 2px;
    box-shadow: var(--shadow-md);
    padding: var(--space-card);
    transition: var(--transition);
    background: linear-gradient(180deg, rgba(255,255,255,.92) 0%, rgba(255,247,237,.92) 100%);
    border: 3px solid rgba(91, 33, 182, .85);
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: var(--transition);
    border: 2px solid rgba(91, 33, 182, .9);
    background: rgba(255, 247, 237, .92);
}
a:not([class]) { color: var(--color-primary); transition: var(--transition); }
a:not([class]):focus-visible { outline: 3px solid rgba(249,115,22,.85); outline-offset: 2px; }

:root { accent-color: var(--color-accent); caret-color: var(--color-accent); }

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

/* news: grid-4 */
/* 四列紧凑网格 */
                .news-grid {
                    display: grid;
                    grid-template-columns: repeat(4, 1fr);
                    gap: 8px;
                }

/* features: centered */
/* 居中大卡片 */
                .feature-list {
                    display: flex;
                    flex-direction: column;
                    align-items: center;
                    gap: 40px;
                    max-width: 720px;
                    margin: 0 auto;
                }

/* hero: split */
/* 左文右图 */
                .hero-inner {
                    display: grid;
                    grid-template-columns: 1fr 1fr;
                    gap: 40px;
                    align-items: center;
                }

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

/* partners: grid-4 */
.partner-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    align-items: center;
}

/* faq: two-column */
.faq-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

/* stats: inline */
/* 水平排列 */
                .stats-grid { display: flex; justify-content: center; gap: 40px; }

/* cta: full-bg */
.cta-section {
    background: linear-gradient(135deg, #5b21b6 0%, #3b0a73 55%, #f97316 120%);
    color: #fff;
    padding: 4rem 2rem;
    border-top: 3px solid rgba(249,115,22,.85);
    border-bottom: 3px solid rgba(255,255,255,.18);
    box-shadow: 0 8px 0 rgba(249,115,22,.18);
}

/* 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(-2px);
    box-shadow: 6px 6px 0 rgba(91, 33, 182, .50), 11px 11px 0 rgba(249, 115, 22, .22), 0 0 0 3px rgba(255,255,255,.08);
}
a:not([class]):hover { color: var(--color-accent); }
.card { border-left: 3px solid var(--color-accent); }
header, .header, .navbar { background: transparent; }

.card:hover, [class*="card"]:hover { text-shadow: 0 2px 0 rgba(249,115,22,.15); }

/* 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; }
}