/* CSSVariantEngine v3.0 — zh3-kaiyunhome.com.cn */
/* Palette: slate-amber | Radius: rounded | Shadow: layered */
/* Spacing: balanced | Transition: smooth */
/* Section layouts: {"news":"grid-3","features":"grid-2","hero":"minimal","testimonials":"carousel","partners":"grid-4","faq":"two-column","stats":"big-number","cta":"card-style"} */

:root {
    --color-primary: #b45309;
    --color-primary-dark: #7c2d12;
    --color-accent: #f59e0b;
    --color-surface: #faf5ee;
    --color-text: #252e3a;
    --color-sidebar: #252e3a;
    --rgb-primary: 180, 83, 9;
    --rgb-accent: 245, 158, 11;
    --gradient-body: radial-gradient(1000px 480px at 85% -20%, rgba(245, 158, 11, .13), transparent 60%), radial-gradient(900px 480px at 0% 0%, rgba(37, 46, 58, .05), transparent 70%), linear-gradient(180deg, #fdfcf9 0%, #f1ece3 100%);
    --gradient-surface: linear-gradient(145deg, #ffffff 0%, #fbf7f0 55%, #f2ecdf 100%);
    --gradient-dark: linear-gradient(135deg, #1c2530 0%, #252e3a 52%, #34414f 100%);
    --gradient-header: linear-gradient(180deg, #1b242e 0%, #252e3a 55%, #2f3c4a 100%);
    --gradient-accent: linear-gradient(135deg, #b45309 0%, #92400e 48%, #7c2d12 100%);
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 30px;
    --shadow-sm: 0 1px 2px rgba(37, 46, 58, .05), 0 4px 12px -2px rgba(37, 46, 58, .07);
    --shadow-md: 0 2px 4px rgba(37, 46, 58, .04), 0 12px 24px -8px rgba(37, 46, 58, .10), 0 28px 56px -16px rgba(37, 46, 58, .14), inset 0 0 0 1px rgba(37, 46, 58, .05);
    --shadow-lg: 0 4px 8px rgba(37, 46, 58, .06), 0 20px 40px -12px rgba(37, 46, 58, .16), 0 48px 96px -24px rgba(37, 46, 58, .22), inset 0 1px 0 rgba(255, 255, 255, .10);
    --space-section: 2.75rem;
    --space-card: 1.15rem;
    --space-gap: 1.125rem;
    --transition: 0.45s cubic-bezier(0.22, 1, 0.36, 1);
    --heading-weight: 800;
    --body-line-height: 1.6;
}

/* 基础覆盖 */
body {
    color: var(--color-text);
    line-height: var(--body-line-height);
    background-color: #f7f3ec;
    background-image: var(--gradient-body);
}
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-color: #ffffff;
    background-image: var(--gradient-surface);
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: var(--transition);
    background-color: var(--color-primary);
    background-image: var(--gradient-accent);
    color: #fffdf8;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, .22), inset 0 -1px 0 rgba(0, 0, 0, .14), 0 6px 14px -4px rgba(180, 83, 9, .4);
}
a:not([class]) {
    color: var(--color-primary);
    text-decoration: underline;
    text-decoration-color: rgba(180, 83, 9, .32);
    text-underline-offset: 3px;
    transition: var(--transition);
}

/* ========== 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-2 */
.feature-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: calc(var(--space-gap) * 1.5); }

/* hero: minimal */
.hero { padding: 2.25rem 0; }
.hero-content { max-width: 560px; }

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

/* stats: big-number */
/* 大数字居中 */
.stats-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 2.25rem; }
.stats-grid .stat-value {
    font-size: 3rem;
    color: var(--color-primary);
}

/* cta: card-style */
.cta-inner {
    background-color: var(--color-sidebar);
    background-image: radial-gradient(760px 320px at 18% -10%, rgba(245, 158, 11, .16), transparent 60%), radial-gradient(800px 360px at 100% 110%, rgba(255, 255, 255, .08), transparent 55%), var(--gradient-dark);
    border-radius: var(--radius-xl);
    padding: 3rem;
    text-align: center;
    color: #f9f6f0;
    box-shadow: var(--shadow-lg);
}

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

/* 条件性装饰 */
header, .header, .navbar {
    background-color: var(--color-sidebar);
    background-image: var(--gradient-header);
    color: #f6f4ef;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, .06), 0 6px 20px -8px rgba(20, 28, 36, .35);
}

/* 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: 2.25rem; --space-card: 1.05rem; --space-gap: 0.85rem; }
    .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; }
}