/* CSSVariantEngine v3.0 — huath-link8.com.cn */
/* Palette: card-mosaic | Radius: generous | Shadow: soft layered */
/* Spacing: spacious | Transition: smooth */
/* Section layouts: preserved from source */

:root {
    --color-primary: #0e7490;
    --color-primary-dark: #164e63;
    --color-accent: #f97316;
    --color-surface: #f4f4f5;
    --color-text: #18181b;
    --rgb-primary: 14,116,144;
    --rgb-accent: 249,115,22;

    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 24px;
    --radius-xl: 32px;

    --shadow-sm: 0 2px 4px rgba(0,0,0,0.04), 0 4px 8px rgba(0,0,0,0.04);
    --shadow-md: 0 2px 6px rgba(0,0,0,0.05), 0 12px 24px -8px rgba(0,0,0,0.10);
    --shadow-lg: 0 4px 8px rgba(0,0,0,0.05), 0 20px 40px -10px rgba(0,0,0,0.12);

    --card-surface: #ffffff;
    --card-border: rgba(24,24,27,0.08);
    --card-shadow: var(--shadow-lg);

    --space-section: 5rem;
    --space-card: 2rem;
    --space-gap: 1.5rem;

    --transition: 0.4s cubic-bezier(0.22, 1, 0.36, 1);
    --heading-weight: 600;
    --body-line-height: 1.7;
}

/* 基础覆盖 */
body {
    color: var(--color-text);
    line-height: var(--body-line-height);
    background-color: var(--color-surface);
    background-image:
        radial-gradient(circle at 15% 20%, rgba(14,116,144,0.08), transparent 36%),
        radial-gradient(circle at 85% 75%, rgba(249,115,22,0.07), transparent 38%),
        radial-gradient(circle at 70% 15%, rgba(236,72,153,0.05), transparent 30%);
    caret-color: var(--color-accent);
    accent-color: var(--color-accent);
}

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(--card-shadow, var(--shadow-md));
    padding: var(--space-card);
    transition: var(--transition);
    background: var(--card-surface, #ffffff);
}

.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: var(--transition);
    box-shadow: 0 1px 2px rgba(0,0,0,0.04), 0 10px 20px -8px rgba(0,0,0,0.12);
}

a:not([class]) {
    color: var(--color-primary);
    text-decoration-color: color-mix(in srgb, var(--color-accent) 55%, transparent);
    transition: var(--transition);
}

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

/* news: grid-4 */
.news-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: calc(var(--space-gap) * 0.8);
    --card-surface: #fde047;
    --card-border: rgba(161,98,7,0.35);
    --card-shadow: 0 4px 8px rgba(0,0,0,0.04), 0 16px 32px -12px rgba(161,98,7,0.28);
}

/* features: grid-3 */
.feature-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-gap);
    --card-surface: #6ee7b7;
    --card-border: rgba(4,120,87,0.28);
    --card-shadow: 0 4px 8px rgba(0,0,0,0.04), 0 18px 36px -12px rgba(4,120,87,0.25);
}

/* hero: overlay */
.hero {
    position: relative;
    min-height: 70vh;
    display: flex;
    align-items: center;
}
.hero-content {
    position: relative;
    z-index: 1;
}

/* testimonials: grid-3 */
.testimonial-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-gap);
    --card-surface: #a5b4fc;
    --card-border: rgba(67,56,202,0.30);
    --card-shadow: 0 4px 8px rgba(0,0,0,0.04), 0 20px 40px -12px rgba(67,56,202,0.26);
}

/* partners: centered */
.partner-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2rem;
    --card-surface: #fdba74;
    --card-border: rgba(194,65,12,0.30);
    --card-shadow: 0 4px 8px rgba(0,0,0,0.04), 0 14px 28px -10px rgba(194,65,12,0.22);
}

/* faq: with-sidebar */
.faq-wrapper {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
    --card-surface: #7dd3fc;
    --card-border: rgba(3,105,161,0.30);
    --card-shadow: 0 4px 8px rgba(0,0,0,0.04), 0 16px 32px -10px rgba(3,105,161,0.22);
}

/* stats: grid-3 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-gap);
    text-align: center;
    --card-surface: #f0abfc;
    --card-border: rgba(147,16,172,0.28);
    --card-shadow: 0 4px 8px rgba(0,0,0,0.04), 0 18px 36px -12px rgba(147,16,172,0.24);
}

/* cta: full-bg */
.cta-section {
    background: linear-gradient(135deg, #0e7490 0%, #155e75 45%, #0f172a 100%);
    color: #ffffff;
    padding: 4rem 2rem;
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.06), 0 24px 48px -16px rgba(2,6,23,0.25);
    text-shadow: 0 2px 8px rgba(15,23,42,0.18);
}

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

/* 条件性装饰 */
.card {
    border: 1px solid var(--card-border, rgba(24,24,27,0.08));
}

header, .header, .navbar {
    background: rgba(255,255,255,0.72);
    backdrop-filter: blur(18px) saturate(160%);
    -webkit-backdrop-filter: blur(18px) saturate(160%);
    box-shadow: 0 2px 12px rgba(0,0,0,0.04);
}

/* 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;
        --shadow-md: 0 1px 3px rgba(0,0,0,0.04), 0 6px 12px -4px rgba(0,0,0,0.08);
        --shadow-lg: 0 2px 6px rgba(0,0,0,0.04), 0 12px 24px -8px rgba(0,0,0,0.10);
    }
    .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; }
}