/* CSSVariantEngine v3.0 — guangsutiyu.net.cn */
/* Palette: teal-orange | Radius: minimal | Shadow: none */
/* Spacing: generous vertical | Transition: snappy flat */
/* Section layouts: {"news":"grid-3","features":"grid-2","hero":"left-aligned","testimonials":"masonry","partners":"centered","faq":"two-column","stats":"grid-4","cta":"full-bg"} */

:root {
    --color-primary: #0f766e;
    --color-primary-dark: #0d5d57;
    --color-accent: #f97316;
    --color-surface: #fffbeb;
    --color-text: #1e293b;
    --rgb-primary: 15, 118, 110;
    --rgb-accent: 249, 115, 22;
    --radius-sm: 1px;
    --radius-md: 3px;
    --radius-lg: 5px;
    --radius-xl: 6px;
    --shadow-sm: none;
    --shadow-md: none;
    --shadow-lg: none;
    --space-section: 4.5rem;
    --space-card: 1.3rem;
    --space-gap: 1.1rem;
    --transition: 0.3s ease-in-out;
    --heading-weight: 600;
    --body-line-height: 1.7;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background: #ffffff; }
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; }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background: var(--color-primary); color: #ffffff; border: 1px solid var(--color-primary-dark); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); }

/* ========== 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); }
.news-section { background: #f8fafc; }

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

/* hero: left-aligned */
.hero-content { text-align: left; max-width: 600px; color: #ffffff; }

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

/* partners: centered */
.partner-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 2rem; }
.partners-section { background: #ffffff; }

/* faq: two-column */
.faq-list { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-gap); }
.faq-section { background: #f1f5f9; }

/* stats: grid-4 */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); text-align: center; color: #ffffff; }
.stats-section { background: #1e293b; }

/* cta: full-bg */
.cta-section { background: #0f172a; color: #fff; padding: 4rem 2rem; }

/* 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); }
.hero, [class*="hero"], section:first-of-type { background: var(--color-primary); }
.card { border: 1px solid #cbd5e1; }
header, .header, .navbar { box-shadow: none; border-bottom: 1px solid #e2e8f0; background: #ffffff; }

/* 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; }
}