:root {
    --color-primary: #3a0ca3;
    --color-primary-dark: #240046;
    --color-accent: #f9c74f;
    --color-surface: #0b1020;
    --color-text: #e9e7ff;
    --rgb-primary: 58,12,163;
    --rgb-accent: 249,199,79;
    --radius-sm: 3px;
    --radius-md: 5px;
    --radius-lg: 7px;
    --radius-xl: 10px;
    --shadow-sm: 0 1px 0 rgba(0,0,0,.35);
    --shadow-md: 0 10px 26px rgba(0,0,0,.35), 0 2px 8px rgba(58,12,163,.25);
    --shadow-lg: 0 18px 42px rgba(0,0,0,.45), 0 6px 16px rgba(249,199,79,.14);
    --space-section: 4rem;
    --space-card: 0.85rem;
    --space-gap: 0.55rem;
    --transition: 140ms cubic-bezier(.2,.9,.2,1);
    --heading-weight: 750;
    --body-line-height: 1.6;
}

body { 
    color: var(--color-text);
    line-height: var(--body-line-height);
    background:
        radial-gradient(900px 420px at 50% -80px, rgba(249,199,79,.16) 0%, rgba(249,199,79,0) 62%),
        radial-gradient(720px 380px at 18% 10%, rgba(58,12,163,.25) 0%, rgba(58,12,163,0) 60%),
        radial-gradient(820px 520px at 82% 18%, rgba(58,12,163,.18) 0%, rgba(58,12,163,0) 58%),
        linear-gradient(180deg, #0f0f1a 0%, #0a0a12 100%);
}

h1, h2, h3, h4 { font-weight: var(--heading-weight); text-shadow: 0 1px 0 rgba(0,0,0,.35); }

section, .section { 
    padding-top: var(--space-section); 
    padding-bottom: var(--space-section); 
}

.card, [class*="card"] { 
    border-radius: var(--radius-lg); 
    box-shadow: 
        0 14px 34px rgba(0,0,0,.42),
        0 2px 0 rgba(255,255,255,.06) inset,
        0 0 0 1px rgba(249,199,79,.09) inset,
        0 0 0 1px rgba(58,12,163,.14);
    padding: var(--space-card); 
    transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition), background-color var(--transition);
    background:
        linear-gradient(180deg, rgba(255,255,255,.035) 0%, rgba(255,255,255,.015) 100%);
}

.btn, button[class*="btn"], a[class*="btn"] { 
    border-radius: var(--radius-md); 
    transition: background-color var(--transition), color var(--transition), box-shadow var(--transition), transform var(--transition);
    box-shadow: 0 8px 24px rgba(0,0,0,.28), 0 0 0 1px rgba(249,199,79,.12) inset;
}

a:not([class]) { 
    color: #7c3aed;
    transition: color var(--transition), text-shadow var(--transition), filter var(--transition);
    text-shadow: 0 0 0 rgba(0,0,0,0);
}

.card { 
    border-left: 3px solid var(--color-accent);
    box-shadow: 
        0 14px 34px rgba(0,0,0,.42),
        -2px 0 0 rgba(58,12,163,.18),
        0 2px 0 rgba(255,255,255,.06) inset,
        0 0 0 1px rgba(249,199,79,.09) inset,
        0 0 0 1px rgba(58,12,163,.14);
}

a:not([class]):hover { 
    color: #fbbf24; 
    text-shadow: 0 0 18px rgba(249,199,79,.35);
    filter: saturate(1.08);
}

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

/* news: masonry-2 */
/* 两列瀑布流 */
                .news-grid { column-count: 2; column-gap: var(--space-gap); }
                .news-grid .card { break-inside: avoid; margin-bottom: var(--space-gap); border-radius: calc(var(--radius-lg) - 1px); box-shadow: 0 10px 28px rgba(0,0,0,.38), 0 0 0 1px rgba(58,12,163,.12) inset; }

/* features: horizontal */
/* 水平滚动 */
                .feature-list { display: flex; gap: var(--space-gap); overflow-x: auto; scroll-snap-type: x mandatory; }
                .feature-list > * { flex: 0 0 300px; scroll-snap-align: start; }
                .feature-list::-webkit-scrollbar { height: 10px; }
                .feature-list::-webkit-scrollbar-track { background: rgba(255,255,255,.06); border-radius: var(--radius-sm); }
                .feature-list::-webkit-scrollbar-thumb { background: linear-gradient(180deg, rgba(249,199,79,.55) 0%, rgba(58,12,163,.45) 100%); border-radius: var(--radius-sm); box-shadow: 0 0 0 1px rgba(0,0,0,.3) inset; }

/* hero: minimal */
.hero { padding: 2rem 0; } .hero-content { max-width: 560px; }
.hero { background:
    radial-gradient(900px 220px at 50% 0%, rgba(58,12,163,.22) 0%, rgba(58,12,163,0) 65%); }

/* testimonials: stacked */
/* 垂直堆叠 */
                .testimonial-list { display: flex; flex-direction: column; gap: var(--space-gap); max-width: 720px; margin: 0 auto; }
                .testimonial-list .card { border-radius: var(--radius-sm); box-shadow: 0 12px 30px rgba(0,0,0,.36), 0 0 0 1px rgba(249,199,79,.10) inset; }

/* partners: centered */
.partner-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 2rem; }
.partner-grid .card, .partner-grid [class*="card"] { box-shadow: 0 10px 26px rgba(0,0,0,.34), 0 0 0 1px rgba(249,199,79,.08) inset; border-radius: var(--radius-sm); }

/* faq: two-column */
.faq-list { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-gap); }
.faq-list .card { border-radius: var(--radius-md); box-shadow: 0 12px 32px rgba(0,0,0,.38), 0 0 0 1px rgba(58,12,163,.14) inset; }

/* stats: inline */
/* 水平排列 */
                .stats-grid { display: flex; justify-content: center; gap: 3rem; }
                .stats-grid .card { box-shadow: 0 8px 22px rgba(0,0,0,.32), 0 0 0 1px rgba(249,199,79,.09) inset; border-radius: var(--radius-sm); }

/* cta: card-style */
.cta-inner { 
    background:
        radial-gradient(850px 300px at 50% -40px, rgba(249,199,79,.20) 0%, rgba(249,199,79,0) 55%),
        linear-gradient(180deg, rgba(58,12,163,.22) 0%, rgba(11,16,32,.88) 70%),
        linear-gradient(180deg, rgba(255,255,255,.04) 0%, rgba(255,255,255,0) 100%);
    border-radius: var(--radius-xl); 
    padding: 3rem; 
    text-align: center; 
    box-shadow: var(--shadow-lg), 0 0 0 1px rgba(249,199,79,.12);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    opacity: .98;
}

/* Page Layout: full-width */
/* 无侧边栏, 全宽 */
            .page-main { max-width: 1200px; margin: 0 auto; }
            .page-main { 
                background: linear-gradient(180deg, rgba(255,255,255,.02), rgba(255,255,255,0));
            }

/* 条件性装饰 */
a:not([class]):hover { color: var(--color-accent); }
.card { border-left: 3px solid #f9c74f; }

/* 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: 3.1rem; --space-card: 0.78rem; --space-gap: 0.48rem; }
    .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; border-radius: 9px; box-shadow: 0 16px 40px rgba(0,0,0,.44), 0 0 0 1px rgba(249,199,79,.10); }
}