:root {
    --color-primary: #5b21b6;
    --color-primary-dark: #12071f;
    --color-accent: #f59e0b;
    --color-surface: #f8fafc;
    --color-text: #f3f4f6;
    --rgb-primary: 91,33,182;
    --rgb-accent: 245,158,11;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 18px;
    --shadow-sm: 0 6px 16px rgba(var(--rgb-primary),.22), 0 1px 0 rgba(255,255,255,.06) inset;
    --shadow-md: 0 10px 28px rgba(var(--rgb-primary),.22), 0 2px 0 rgba(255,255,255,.06) inset, 0 0 0 1px rgba(245,158,11,.10);
    --shadow-lg: 0 18px 44px rgba(var(--rgb-primary),.28), 0 4px 0 rgba(255,255,255,.07) inset, 0 0 0 1px rgba(245,158,11,.16);
    --space-section: 4rem;
    --space-card: 1.5rem;
    --space-gap: 1.25rem;
    --transition: 0.55s cubic-bezier(.2,.75,.2,1);
    --heading-weight: 800;
    --body-line-height: 1.75;
}

body { color: var(--color-text); line-height: var(--body-line-height); background: radial-gradient(1200px 700px at 50% 0%, rgba(var(--rgb-accent), .14) 0%, rgba(var(--rgb-primary), .14) 35%, rgba(15,15,26,.92) 70%, rgba(10,10,18,.98) 100%); }

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: var(--radius-xl);
    box-shadow:
        0 1px 0 rgba(255,255,255,.08) inset,
        0 12px 34px rgba(var(--rgb-primary),.28),
        0 8px 18px rgba(0,0,0,.28),
        0 0 0 1px rgba(245,158,11,.14);
    padding: var(--space-card);
    transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition), color var(--transition);
    background:
        radial-gradient(700px 260px at 20% 0%, rgba(var(--rgb-accent), .22) 0%, rgba(var(--rgb-primary), .12) 38%, rgba(15,15,26,.45) 70%, rgba(15,15,26,.72) 100%),
        linear-gradient(180deg, rgba(255,255,255,.08) 0%, rgba(255,255,255,.04) 100%);
}

.card:hover, [class*="card"]:hover {
    transform: translateY(-6px);
    box-shadow:
        0 1px 0 rgba(255,255,255,.10) inset,
        0 22px 62px rgba(var(--rgb-primary),.36),
        0 10px 22px rgba(0,0,0,.34),
        0 0 0 1px rgba(245,158,11,.22);
}

.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: background var(--transition), box-shadow var(--transition), color var(--transition), transform var(--transition), border-color var(--transition);
}

a:not([class]) { color: #a78bfa; transition: var(--transition); text-shadow: 0 1px 0 rgba(0,0,0,.35); }
a:not([class]):hover { color: var(--color-accent); text-shadow: 0 0 18px rgba(var(--rgb-accent),.42), 0 1px 0 rgba(0,0,0,.35); }

section .card, [class*="card"] { border-color: rgba(245,158,11,.18); }

.card { border-left: 3px solid rgba(245,158,11,.92); }

header, .header, .navbar {
    background:
        radial-gradient(900px 320px at 50% -20%, rgba(var(--rgb-accent), .22) 0%, rgba(var(--rgb-primary), .16) 40%, rgba(10,10,18,.0) 70%),
        linear-gradient(180deg, rgba(15,15,26,.55) 0%, rgba(15,15,26,.18) 100%);
}

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

/* news: featured-left */
/* 左大右小 (1大+2小) */
                .news-grid { display: grid; grid-template-columns: 2fr 1fr; grid-template-rows: auto auto; gap: var(--space-gap); }
                .news-grid > *:first-child { grid-row: span 2; }

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

/* hero: left-aligned */
.hero-content { text-align: left; max-width: 600px; }

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

/* partners: grid-6 */
.partner-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: var(--space-gap); align-items: center; }

/* faq: two-column */
.faq-list { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-gap); }

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

/* cta: centered */
.cta-inner { text-align: center; max-width: 700px; margin: 0 auto; }

/* Page Layout: wide */
/* 超宽 */
            .page-main { max-width: 1400px; margin: 0 auto; }

/* 条件性装饰 */
.card { border-image: linear-gradient(180deg, rgba(245,158,11,.95) 0%, rgba(91,33,182,.35) 45%, rgba(167,139,250,.65) 100%) 1; border-style: solid; }
@supports (border-image: linear-gradient(#000, #fff) 1) {
    .card { border-left-color: transparent; }
    .card { border-left: 3px solid rgba(245,158,11,.92); }
}

header, .header, .navbar { backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); }

a:not([class]) { caret-color: var(--color-accent); accent-color: var(--color-accent); }

/* 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; --radius-md: 10px; --radius-lg: 12px; --radius-xl: 16px; --transition: 0.5s cubic-bezier(.2,.75,.2,1); }
    .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; }
}