:/* CSSVariantEngine v3.0 — plus-kai-yun.com */
/* Palette: slate-teal | Radius: pill | Shadow: soft-layered */
/* Spacing: tight | Transition: smooth */
/* Section layouts: {"news":"grid-4","features":"grid-3","hero":"overlay","testimonials":"stacked","partners":"grid-6","faq":"with-sidebar","stats":"grid-4","cta":"full-bg"} */

:root {
    --color-primary: #1a6b5a;
    --color-primary-dark: #145c4d;
    --color-accent: #2dd4bf;
    --color-surface: #f0f9f8;
    --color-text: #1a2e2b;
    --rgb-primary: 26,107,90;
    --rgb-accent: 45,212,191;
    --radius-sm: 10px;
    --radius-md: 18px;
    --radius-lg: 24px;
    --radius-xl: 36px;
    --shadow-sm: 0 2px 4px rgba(26, 107, 90, 0.04), 0 8px 16px -6px rgba(26, 107, 90, 0.08);
    --shadow-md: 0 4px 8px rgba(26, 107, 90, 0.05), 0 20px 40px -10px rgba(26, 107, 90, 0.12);
    --shadow-lg: 0 8px 16px rgba(26, 107, 90, 0.08), 0 32px 64px -12px rgba(26, 107, 90, 0.18);
    --space-section: 2rem;
    --space-card: 1rem;
    --space-gap: 0.75rem;
    --transition: 0.35s cubic-bezier(0.25, 0.1, 0.25, 1);
    --heading-weight: 600;
    --body-line-height: 1.6;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background: linear-gradient(135deg, #f0f9f8 0%, #e8f4f2 50%, #f5fbfa 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: #ffffff; border: 1px solid rgba(26, 107, 90, 0.08); }
.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-accent) 100%); color: #ffffff; border: none; box-shadow: 0 4px 12px rgba(26, 107, 90, 0.25); }
.btn:hover, button[class*="btn"]:hover, a[class*="btn"]:hover { box-shadow: 0 6px 20px rgba(26, 107, 90, 0.35); transform: translateY(-1px); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); text-decoration: none; background-image: linear-gradient(to right, var(--color-primary), var(--color-accent)); background-size: 0% 2px; background-position: 0 100%; background-repeat: no-repeat; }
a:not([class]):hover { background-size: 100% 2px; }

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

/* news: grid-4 */
/* 四列紧凑网格 */
                .news-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: calc(var(--space-gap) * 0.8); }

/* features: grid-3 */
.feature-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }
.feature-list .card { background: linear-gradient(145deg, #ffffff 0%, #f5faf9 100%); }

/* hero: overlay */
/* 全屏背景+文字覆盖 */
                .hero { position: relative; min-height: 70vh; display: flex; align-items: center; background: linear-gradient(135deg, #0f3d35 0%, #1a6b5a 40%, #2dd4bf 100%); }
                .hero-content { position: relative; z-index: 1; background: rgba(255, 255, 255, 0.1); backdrop-filter: blur(12px); border-radius: var(--radius-xl); padding: 2.5rem; box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1), 0 20px 40px -10px rgba(0, 0, 0, 0.2); }

/* testimonials: stacked */
/* 垂直堆叠 */
                .testimonial-list { display: flex; flex-direction: column; gap: var(--space-gap); max-width: 720px; margin: 0 auto; }
                .testimonial-list .card { background: #ffffff; border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); }

/* partners: grid-6 */
.partner-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: var(--space-gap); align-items: center; }
.partner-grid .card { background: #ffffff; box-shadow: var(--shadow-sm); border-radius: var(--radius-md); }

/* faq: with-sidebar */
/* FAQ 左 + 联系信息右 */
                .faq-wrapper { display: grid; grid-template-columns: 2fr 1fr; gap: 2rem; }
                .faq-wrapper .card { background: #ffffff; border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); }

/* stats: grid-4 */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); text-align: center; }
.stats-grid .card { background: linear-gradient(135deg, #ffffff 0%, #e8f4f2 100%); border-radius: var(--radius-xl); box-shadow: var(--shadow-md); }

/* cta: full-bg */
.cta-section { background: linear-gradient(135deg, #1a6b5a 0%, #145c4d 50%, #0f3d35 100%); color: #f0f9f8; padding: 4rem 2rem; box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1); }

/* Page Layout: narrow-centered */
/* 窄版居中 */
            .page-main { max-width: 860px; margin: 0 auto; background: rgba(255, 255, 255, 0.7); backdrop-filter: blur(8px); border-radius: var(--radius-xl); box-shadow: var(--shadow-lg); padding: 2rem; }

/* 条件性装饰 */
a:not([class]):hover { color: var(--color-accent); }
.card { border-left: 3px solid var(--color-primary); box-shadow: 0 4px 8px rgba(26, 107, 90, 0.05), 0 20px 40px -10px rgba(26, 107, 90, 0.12); }
.card:hover { box-shadow: 0 6px 12px rgba(26, 107, 90, 0.08), 0 24px 48px -12px rgba(26, 107, 90, 0.2); transform: translateY(-2px); }
header, .header, .navbar { background: rgba(240, 249, 248, 0.85); backdrop-filter: blur(12px); border-bottom: 1px solid rgba(26, 107, 90, 0.1); }

/* 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; }
}