:root {
    --color-primary: #7c3aed;
    --color-primary-dark: #4c1d95;
    --color-accent: #f97316;
    --color-surface: #f6f3ee;
    --color-text: #2c2238;
    --rgb-primary: 124,58,237;
    --rgb-accent: 249,115,22;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 24px;
    --shadow-sm: 0 3px 8px rgba(44,34,56,.08), 0 12px 24px -14px rgba(124,58,237,.22);
    --shadow-md: 0 6px 14px rgba(44,34,56,.08), 0 22px 42px -16px rgba(124,58,237,.20), 0 1px 0 rgba(255,255,255,.65) inset;
    --shadow-lg: 0 10px 20px rgba(44,34,56,.10), 0 28px 54px -18px rgba(249,115,22,.20), 0 1px 0 rgba(255,255,255,.7) inset;
    --space-section: 5rem;
    --space-card: 2rem;
    --space-gap: 1.5rem;
    --transition: 0.42s cubic-bezier(.22,1,.36,1);
    --heading-weight: 600;
    --body-line-height: 1.6;
}

body { color: var(--color-text); line-height: var(--body-line-height); background: linear-gradient(180deg, #fcfaf7 0%, #f4efe8 100%); caret-color: var(--color-primary); accent-color: var(--color-accent); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); color: #241b31; text-shadow: 0 1px 0 rgba(255,255,255,.7); }
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: linear-gradient(145deg, rgba(255,255,255,.96) 0%, rgba(248,241,255,.88) 52%, rgba(255,244,236,.92) 100%); border-color: rgba(var(--rgb-primary), .18); border-style: solid; backdrop-filter: blur(10px) saturate(1.08); filter: saturate(1.02); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); box-shadow: 0 6px 16px rgba(124,58,237,.18), 0 14px 30px -18px rgba(249,115,22,.28); border-color: rgba(76,29,149,.22); border-style: solid; }
a:not([class]) { color: var(--color-primary); transition: var(--transition); text-decoration-color: rgba(249,115,22,.55); text-shadow: 0 1px 0 rgba(255,255,255,.55); }

/* ========== 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-3 */
.feature-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }

/* hero: split */
/* 左文右图 */
                .hero-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; 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: calc(var(--space-gap) * 1.5); align-items: center; }

/* faq: single-column */
.faq-list { max-width: 800px; margin: 0 auto; }

/* stats: inline */
/* 水平排列 */
                .stats-grid { display: flex; justify-content: center; gap: 3rem; }

/* cta: split */
.cta-inner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 2rem; }

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

/* 条件性装饰 */
.card { border: 1px dashed rgba(var(--rgb-primary), .18); outline: 1px solid rgba(var(--rgb-accent), .10); outline-color: rgba(var(--rgb-accent), .10); opacity: .98; }

/* 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; }
}