:root {
    --color-primary: #8b5cf6;
    --color-primary-dark: #2e1065;
    --color-accent: #f0b429;
    --color-surface: #1a1430;
    --color-text: #ece7fb;
    --rgb-primary: 139,92,246;
    --rgb-accent: 240,180,41;
    --radius-sm: 6px;
    --radius-md: 14px;
    --radius-lg: 22px;
    --radius-xl: 32px;
    --shadow-sm: 0 2px 6px rgba(5,3,16,.65), 0 1px 0 rgba(255,255,255,.05) inset;
    --shadow-md: 0 10px 30px rgba(5,3,16,.6), 0 0 0 1px rgba(139,92,246,.2), 0 18px 52px rgba(139,92,246,.18);
    --shadow-lg: 0 26px 62px rgba(5,3,16,.78), 0 0 0 1px rgba(240,180,41,.18), 0 42px 96px rgba(109,40,217,.28);
    --space-section: 2rem;
    --space-card: 1rem;
    --space-gap: 0.75rem;
    --transition: 0.5s cubic-bezier(.22,.9,.28,1);
    --heading-weight: 600;
    --body-line-height: 1.65;
}

/* 基础覆盖 */
body {
    color: var(--color-text);
    line-height: var(--body-line-height);
    background-color: #0f0f1a;
    background-image:
        radial-gradient(1200px 620px at 50% -12%, rgba(139,92,246,.30), rgba(139,92,246,0) 66%),
        radial-gradient(880px 480px at 88% 14%, rgba(240,180,41,.12), rgba(240,180,41,0) 62%),
        linear-gradient(180deg, #0f0f1a 0%, #14102a 46%, #0a0816 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-lg);
    box-shadow: var(--shadow-md);
    padding: var(--space-card);
    transition: var(--transition);
    background: linear-gradient(152deg, #1b1533 0%, #241a45 42%, #2f1c5c 72%, #3a2170 100%);
    border-color: rgba(167,139,250,.35);
    border-style: solid;
    filter: saturate(1.06);
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: var(--transition);
    background-image: linear-gradient(135deg, #6d28d9 0%, #8b5cf6 40%, #f0b429 100%);
    color: #0f0f1a;
    border-color: rgba(240,180,41,.55);
    box-shadow: 0 6px 18px rgba(139,92,246,.28), 0 0 0 1px rgba(240,180,41,.22);
}
a:not([class]) { color: var(--color-primary); transition: var(--transition); }

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

/* news: grid-4 */
/* 四列紧凑网格 */
                .news-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: calc(var(--space-gap) * 0.8); }

/* features: grid-4 */
.feature-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); }

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

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

/* partners: centered */
.partner-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 2rem; }

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

/* stats: grid-4 */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); text-align: center; }

/* cta: card-style */
.cta-inner {
    background: linear-gradient(135deg, #241a45 0%, #3b1d6e 38%, #6d28d9 68%, #b98a1f 100%);
    border-radius: var(--radius-xl);
    padding: 3rem;
    text-align: center;
    box-shadow: var(--shadow-lg);
    border-color: rgba(240,180,41,.45);
    border-style: solid;
}

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

/* 条件性装饰 */
a:not([class]):hover { color: var(--color-accent); text-shadow: 0 0 18px rgba(240,180,41,.45), 0 1px 2px rgba(5,3,16,.8); }
.hero, [class*="hero"], section:first-of-type {
    background: linear-gradient(135deg, #120c26 0%, #2e1065 30%, #4c1d95 56%, #6d28d9 78%, #9d7a1c 100%),
                radial-gradient(760px 380px at 22% 12%, rgba(240,180,41,.16), rgba(240,180,41,0) 70%);
}
.card { border-left: 3px solid var(--color-primary); border-image: linear-gradient(180deg, #f0b429 0%, #8b5cf6 48%, #4c1d95 100%) 1; }
header, .header, .navbar {
    box-shadow: 0 2px 24px rgba(139,92,246,.26), 0 1px 0 rgba(240,180,41,.16) inset;
    background-image: linear-gradient(180deg, rgba(26,20,48,.92), rgba(15,15,26,.86));
    border-color: rgba(167,139,250,.22);
    border-style: solid;
}

/* 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; }
}