/* CSSVariantEngine v3.0 — douyu-guanwang.com.cn */
/* Palette: warm amber | Radius: soft rounded | Shadow: gradient layered */
/* Spacing: generous 70-90px vertical strips | Transition: smooth 0.5s cubic */
/* Section layouts: {"news":"grid-3","features":"grid-4","hero":"overlay","testimonials":"carousel","partners":"grid-4","faq":"single-column","stats":"grid-4","cta":"split"} */

:root {
    --color-primary: #d97706;
    --color-primary-dark: #92400e;
    --color-accent: #fef3c7;
    --color-surface: #fffbeb;
    --color-text: #78350f;
    --rgb-primary: 217, 119, 6;
    --rgb-accent: 254, 243, 199;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --shadow-sm: 0 3px 10px rgba(var(--rgb-primary), 0.15), 0 1px 3px rgba(146, 64, 14, 0.1);
    --shadow-md: 0 6px 20px rgba(var(--rgb-primary), 0.18), 0 2px 6px rgba(146, 64, 14, 0.12);
    --shadow-lg: 0 12px 40px rgba(var(--rgb-primary), 0.2), 0 4px 12px rgba(146, 64, 14, 0.15);
    --space-section: 5rem;
    --space-card: 1.75rem;
    --space-gap: 1.5rem;
    --transition: 0.5s cubic-bezier(0.25, 0.1, 0.25, 1);
    --heading-weight: 700;
    --body-line-height: 1.75;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background: linear-gradient(180deg, #ffffff 0%, #fffbeb 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(145deg, #ffffff 0%, #fffdf5 100%); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%); color: white; }
a:not([class]) { color: var(--color-primary); 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-4 */
.feature-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); }

/* hero: overlay */
/* 全屏背景+文字覆盖 */
.hero { position: relative; min-height: 70vh; display: flex; align-items: center; background: linear-gradient(180deg, #92400e 0%, #b45309 35%, #d97706 100%); }
.hero-content { position: relative; z-index: 1; }

/* testimonials: carousel */
/* 单条轮播 */
.testimonial-list { display: flex; overflow: hidden; background: linear-gradient(180deg, #78350f 0%, #451a03 100%); } 
.testimonial-list > * { flex: 0 0 100%; color: var(--color-accent); }

/* partners: grid-4 */
.partner-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: calc(var(--space-gap) * 1.5); align-items: center; background: linear-gradient(0deg, #ffffff 0%, #fffbeb 100%); }

/* faq: single-column */
.faq-list { max-width: 800px; margin: 0 auto; background: linear-gradient(180deg, #fef3c7 0%, #fde68a 8%); }

/* stats: grid-4 */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); text-align: center; background: linear-gradient(180deg, #fffbeb 0%, #ffffff 100%); }

/* cta: split */
.cta-inner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 2rem; background: linear-gradient(135deg, #92400e 0%, #78350f 100%); color: white; }

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

/* 条件性装饰 */
a:not([class]):hover { color: var(--color-primary-dark); text-shadow: 0 0 2px rgba(var(--rgb-primary), 0.2); }
.hero, [class*="hero"], section:first-of-type { background: linear-gradient(180deg, #92400e 0%, #b45309 35%, #d97706 100%); }
.card { border-left: 4px solid; border-image: linear-gradient(to bottom, #f59e0b, #d97706, #92400e) 1; }
header, .header, .navbar { box-shadow: 0 4px 12px rgba(var(--rgb-primary), 0.1), 0 1px 4px rgba(146, 64, 14, 0.08); background: linear-gradient(90deg, #ffffff 0%, #fffdf5 100%); }

/* 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: 1.1rem; --space-gap: 0.9rem; }
    .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; }
}