/* CSSVariantEngine v3.0 — hzjieshengmei.com */
/* Palette: teal-gradient | Radius: soft-large | Shadow: multi-layer gradient | Spacing: comfortable-wide | Transition: 0.5s smooth */
/* Section layouts: {"news":"grid-3","features":"grid-2","hero":"minimal","testimonials":"masonry","partners":"centered","faq":"two-column","stats":"grid-3","cta":"card-style"} */

:root {
    --color-primary: #0d9488;
    --color-primary-dark: #0f766e;
    --color-accent: #2dd4bf;
    --color-surface: #f0fdfa;
    --color-text: #134e4a;
    --rgb-primary: 13, 148, 136;
    --rgb-accent: 45, 212, 191;
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --radius-xl: 24px;
    --shadow-sm: 0 2px 6px rgba(13, 148, 136, 0.09), 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 8px 18px rgba(13, 148, 136, 0.13), 0 4px 8px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 18px 36px rgba(13, 148, 136, 0.17), 0 8px 16px rgba(0, 0, 0, 0.09);
    --space-section: 5rem;
    --space-card: 1.6rem;
    --space-gap: 1.3rem;
    --transition: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --heading-weight: 600;
    --body-line-height: 1.75;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background: linear-gradient(0deg, #ffffff 0%, #fefefe 100%); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); }
section:nth-child(odd), .section:nth-child(odd) { background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%); }
section:nth-child(even), .section:nth-child(even) { background: linear-gradient(180deg, #f0fdfa 0%, #ccfbf1 100%); }
section:last-of-type, .section:last-of-type { background: linear-gradient(180deg, #134e4a 0%, #0f766e 100%); color: #f0fdfa; }
.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%); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-accent) 100%); color: white; border: none; }
a:not([class]) { color: var(--color-primary); transition: var(--transition); text-decoration-thickness: 2px; text-underline-offset: 3px; }

/* ========== 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-2 */
.feature-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: calc(var(--space-gap) * 1.5); }

/* hero: minimal */
.hero { padding: 2rem 0; } .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: centered */
.partner-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 2rem; }

/* faq: two-column */
.faq-list { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-gap); }

/* stats: grid-3 */
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); text-align: center; }

/* cta: card-style */
.cta-inner { background: linear-gradient(120deg, #ccfbf1 0%, #99f6e4 35%, #5eead4 70%, #2dd4bf 100%); border-radius: var(--radius-xl); padding: 3rem; text-align: center; }

/* Page Layout: narrow-centered */
/* 窄版居中 */
.page-main { max-width: 860px; margin: 0 auto; }

/* 条件性装饰 */
.card:hover, [class*="card"]:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.card { border-left: 4px solid; border-image: linear-gradient(180deg, var(--color-primary) 0%, var(--color-accent) 100%) 1; }
header, .header, .navbar { box-shadow: 0 4px 14px rgba(13, 148, 136, 0.08), 0 2px 6px rgba(15, 118, 110, 0.04); background: linear-gradient(90deg, #ffffff 0%, #f8fafc 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: 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; }
}