:root {
    --color-primary: #f0abfc;
    --color-primary-dark: #86198f;
    --color-accent: #fb923c;
    --color-surface: #1d1a26;
    --color-text: #f5f3f7;
    --rgb-primary: 240,171,252;
    --rgb-accent: 251,146,60;
    --card-a: #4c1d95;
    --card-b: #be185d;
    --card-c: #7c3aed;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 22px;
    --radius-xl: 30px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,.25), 0 4px 12px -2px rgba(var(--rgb-primary),.22), 0 8px 24px -6px rgba(var(--rgb-accent),.12);
    --shadow-md: 0 2px 4px rgba(0,0,0,.25), 0 8px 20px -4px rgba(var(--rgb-primary),.32), 0 16px 44px -8px rgba(var(--rgb-accent),.16), 0 28px 64px -12px rgba(0,0,0,.25);
    --shadow-lg: 0 4px 8px rgba(0,0,0,.3), 0 12px 32px -4px rgba(var(--rgb-primary),.38), 0 24px 64px -8px rgba(var(--rgb-accent),.2), 0 48px 100px -16px rgba(0,0,0,.3);
    --space-section: 4rem;
    --space-card: 1.5rem;
    --space-gap: 1.25rem;
    --transition: 0.45s cubic-bezier(0.22, 1, 0.36, 1);
    --heading-weight: 600;
    --body-line-height: 1.65;
    accent-color: var(--color-accent);
    caret-color: var(--color-accent);
}

/* 基础覆盖 */
body {
    color: var(--color-text);
    line-height: var(--body-line-height);
    background:
        radial-gradient(circle at 75% 10%, rgba(251,146,60,.14), transparent 40%),
        radial-gradient(circle at 20% 80%, rgba(168,85,247,.16), transparent 45%),
        linear-gradient(160deg, #201a2b, #14111b 60%, #0d0b12);
}
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), inset 0 1px 0 rgba(255,255,255,.12);
    padding: var(--space-card);
    transition: var(--transition);
    background: linear-gradient(135deg, var(--card-a) 0%, var(--card-c) 40%, var(--card-b) 100%);
    color: #fff;
    text-shadow: 0 1px 2px rgba(0,0,0,.18);
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: var(--transition);
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-accent));
    color: #fff;
    box-shadow: var(--shadow-sm), inset 0 1px 0 rgba(255,255,255,.15);
}
a:not([class]) {
    color: var(--color-primary);
    transition: var(--transition);
    text-decoration-color: rgba(240,171,252,.35);
}

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

/* news: masonry-2 */
/* 两列瀑布流 */
.news-grid {
    column-count: 2;
    column-gap: var(--space-gap);
    --card-a: #f97316;
    --card-b: #dc2626;
    --card-c: #d97706;
}
.news-grid .card { break-inside: avoid; margin-bottom: var(--space-gap); }

/* features: grid-4 */
.feature-list {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-gap);
    --card-a: #0e7490;
    --card-b: #1d4ed8;
    --card-c: #0d9488;
}

/* hero: overlay */
/* 全屏背景+文字覆盖 */
.hero { position: relative; min-height: 70vh; display: flex; align-items: center; }
.hero-content { position: relative; z-index: 1; }

/* testimonials: masonry */
.testimonial-list {
    column-count: 2;
    column-gap: var(--space-gap);
    --card-a: #7e22ce;
    --card-b: #be185d;
    --card-c: #9333ea;
}
.testimonial-list > * { break-inside: avoid; margin-bottom: var(--space-gap); }

/* partners: grid-4 */
.partner-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: calc(var(--space-gap) * 1.5);
    align-items: center;
    --card-a: #d97706;
    --card-b: #b91c1c;
    --card-c: #ea580c;
}

/* faq: two-column */
.faq-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-gap);
    --card-a: #0f766e;
    --card-b: #1d4ed8;
    --card-c: #0369a1;
}

/* stats: grid-3 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-gap);
    text-align: center;
    --card-a: #15803d;
    --card-b: #0f766e;
    --card-c: #4d7c0f;
}

/* cta: full-bg */
.cta-section {
    background: linear-gradient(135deg, var(--color-primary-dark), #be185d 55%, var(--color-accent));
    color: #fff;
    padding: 4rem 2rem;
}

/* Page Layout: full-width */
/* 无侧边栏, 全宽 */
.page-main { max-width: 1200px; margin: 0 auto; }

/* 条件性装饰 */
.hero, [class*="hero"], section:first-of-type {
    background: linear-gradient(135deg, #1e1b4b 0%, #6d28d9 35%, #be185d 70%, #f59e0b 110%);
}
.card {
    border-left: 3px solid rgba(255,255,255,.38);
}
header, .header, .navbar {
    background: rgba(20,17,27,.6);
    backdrop-filter: blur(16px) saturate(1.25);
    -webkit-backdrop-filter: blur(16px) saturate(1.25);
}

/* 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; }
}