:/* CSSVariantEngine v3.0 — tr-h5-kaiyun.com */
/* Palette: sage | Radius: pillowy | Shadow: layered */
/* Spacing: balanced | Transition: smooth */
/* Section layouts: {"news":"list-view","features":"centered","hero":"minimal","testimonials":"stacked","partners":"scroll","faq":"with-sidebar","stats":"grid-3","cta":"split"} */

:root {
    --color-primary: #4a6b5a;
    --color-primary-dark: #1f3529;
    --color-accent: #a3c4a8;
    --color-surface: #f2f7f3;
    --color-text: #1a2b21;
    --rgb-primary: 74,107,90;
    --rgb-accent: 163,196,168;
    --radius-sm: 10px;
    --radius-md: 18px;
    --radius-lg: 24px;
    --radius-xl: 36px;
    --shadow-sm: 0 4px 8px rgba(74,107,90,.08), 0 2px 4px rgba(31,53,41,.06);
    --shadow-md: 0 12px 24px rgba(74,107,90,.10), 0 4px 8px rgba(31,53,41,.06);
    --shadow-lg: 0 28px 56px rgba(74,107,90,.14), 0 10px 20px rgba(31,53,41,.08);
    --space-section: 3rem;
    --space-card: 1.5rem;
    --space-gap: 1.25rem;
    --transition: 0.4s cubic-bezier(0.25, 1, 0.5, 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-color: var(--color-surface); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); color: var(--color-primary-dark); }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); }
.card, [class*="card"] { border-radius: var(--radius-xl); box-shadow: var(--shadow-md); padding: var(--space-card); transition: var(--transition); background-color: #ffffff; border: 1px solid rgba(163,196,168,.25); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-lg); transition: var(--transition); background-color: var(--color-primary); color: #ffffff; border: none; box-shadow: 0 4px 12px rgba(74,107,90,.25); }
.btn:hover, button[class*="btn"]:hover, a[class*="btn"]:hover { background-color: var(--color-primary-dark); box-shadow: 0 8px 20px rgba(31,53,41,.3); transform: translateY(-2px); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); text-decoration: none; border-bottom: 1px solid transparent; }
a:not([class]):hover { border-bottom-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; border-left: 4px solid var(--color-accent); }

/* 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; }
                .feature-list .card { background: linear-gradient(145deg, #ffffff 60%, #f0f7f1); }

/* hero: minimal */
.hero { padding: 2rem 0; } .hero-content { max-width: 560px; }

/* 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: #fcfdfc; border-left: 4px solid transparent; }
                .testimonial-list .card:hover { border-left-color: var(--color-accent); }

/* partners: scroll */
/* 自动滚动 */
                .partner-grid { display: flex; gap: 2rem; overflow: hidden; animation: partnerScroll 25s linear infinite; }
                @keyframes partnerScroll { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }
                .partner-grid .card { background: transparent; box-shadow: none; border: 1px dashed rgba(74,107,90,.2); }

/* faq: with-sidebar */
/* FAQ 左 + 联系信息右 */
                .faq-wrapper { display: grid; grid-template-columns: 2fr 1fr; gap: 2.5rem; }
                .faq-wrapper .card { border-left: 4px solid var(--color-accent); background: #fafcfa; }

/* 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(160deg, var(--color-primary) 0%, var(--color-primary-dark) 100%); color: #ffffff; border: none; }
.stats-grid .card h3, .stats-grid .card p { color: #ffffff; }
.stats-grid .card h3 { text-shadow: 0 2px 8px rgba(0,0,0,.2); }

/* cta: split */
.cta-inner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 2rem; }
.cta-inner .card { background: linear-gradient(135deg, var(--color-primary) 0%, #5d8a6e 100%); color: #ffffff; border: none; box-shadow: var(--shadow-lg); }
.cta-inner .card h2, .cta-inner .card p { color: #ffffff; }

/* Page Layout: wide */
/* 超宽 */
            .page-main { max-width: 1400px; margin: 0 auto; }

/* 条件性装饰 */
a:not([class]):hover { color: var(--color-accent); }
.card { border-left: 4px solid var(--color-primary); transition: var(--transition); }
.card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
header, .header, .navbar { background: transparent; }

/* 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: 1.25rem; --space-gap: 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; }
}