/* CSSVariantEngine v3.0 — yuehaidianjing.org.cn */
/* Palette: Ocean Sunrise | Radius: soft rounded | Shadow: multi-layer tinted */
/* Spacing: symmetric 24px grid | Transition: smooth 0.5s */
/* Section layouts: {"news":"list-view","features":"centered","hero":"minimal","testimonials":"masonry","partners":"grid-6","faq":"single-column","stats":"grid-3","cta":"centered"} */

:root {
    --color-primary: #0ea5e9;
    --color-primary-dark: #0369a1;
    --color-accent: #f97316;
    --color-surface: linear-gradient(135deg, #f0f9ff 0%, #e0f7fa 100%);
    --color-text: #0c4a6e;
    --rgb-primary: 14, 165, 233;
    --rgb-accent: 249, 115, 22;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --shadow-sm: 0 2px 8px rgba(var(--rgb-primary), 0.1), 0 1px 3px rgba(var(--rgb-accent), 0.06);
    --shadow-md: 0 8px 24px rgba(var(--rgb-primary), 0.12), 0 4px 12px rgba(var(--rgb-accent), 0.08);
    --shadow-lg: 0 20px 50px rgba(var(--rgb-primary), 0.15), 0 10px 24px rgba(var(--rgb-accent), 0.1), 0 2px 8px rgba(0,0,0,0.05);
    --space-section: 3.2rem;
    --space-card: 1.4rem;
    --space-gap: 1.5rem;
    --transition: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --heading-weight: 800;
    --body-line-height: 1.7;
}

/* 基础覆盖 */
body { 
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 50%, #fff7ed 100%);
    color: var(--color-text); 
    line-height: var(--body-line-height); 
}
h1, h2, h3, h4 { 
    font-weight: var(--heading-weight); 
    background: linear-gradient(90deg, var(--color-primary-dark) 0%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
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%, #f8fafc 100%);
    border: 2px solid transparent;
    border-image: linear-gradient(135deg, #0ea5e9, #f97316, #10b981) 1;
}
.card:hover, [class*="card"]:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}
.btn, button[class*="btn"], a[class*="btn"] { 
    border-radius: var(--radius-md); 
    transition: var(--transition); 
    background: linear-gradient(90deg, var(--color-primary) 0%, #38bdf8 50%, var(--color-primary) 100%);
    background-size: 200% 100%;
    color: #ffffff;
    border: none;
}
.btn:hover, button[class*="btn"]:hover, a[class*="btn"]:hover {
    background-position: 100% 0;
    box-shadow: 0 0 0 4px rgba(var(--rgb-primary), 0.2);
}
a:not([class]) { 
    color: var(--color-primary); 
    transition: var(--transition); 
    text-decoration: underline;
    text-underline-offset: 3px;
}
a:not([class]):hover {
    color: var(--color-accent);
}

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

/* news: list-view */
/* 列表模式 (图左文右) */
                .news-grid { display: flex; flex-direction: column; gap: var(--space-gap); }
                .news-grid .card { display: grid; grid-template-columns: 280px 1fr; }

/* features: centered */
/* 居中大卡片 */
                .feature-list { display: flex; flex-direction: column; align-items: center; gap: calc(var(--space-gap) * 2); max-width: 720px; margin: 0 auto; }

/* hero: minimal */
.hero { padding: 2rem 0; background: radial-gradient(ellipse at top, rgba(var(--rgb-primary), 0.08) 0%, transparent 70%); } 
.hero-content { max-width: 560px; }

/* testimonials: masonry */
.testimonial-list { column-count: 2; column-gap: var(--space-gap); }
                .testimonial-list > * { break-inside: avoid; margin-bottom: var(--space-gap); }

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

/* faq: single-column */
.faq-list { max-width: 800px; margin: 0 auto; }

/* stats: grid-3 */
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); text-align: center; }
.stats-grid .card {
    background: linear-gradient(180deg, rgba(var(--rgb-primary), 0.05) 0%, rgba(var(--rgb-accent), 0.05) 100%);
}

/* cta: centered */
.cta-inner { text-align: center; max-width: 700px; margin: 0 auto; padding: 2rem; border-radius: var(--radius-xl); background: linear-gradient(135deg, rgba(var(--rgb-primary), 0.1) 0%, rgba(var(--rgb-accent), 0.1) 100%); }

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

/* 条件性装饰 */
::selection {
    background: rgba(var(--rgb-accent), 0.3);
    color: var(--color-primary-dark);
}
* {
    caret-color: var(--color-accent);
    accent-color: var(--color-primary);
}

/* 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: 2.1rem; --space-card: 1.1rem; --space-gap: 1.1rem; }
    .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; }
}