/* CSSVariantEngine v3.0 — iyinho.com */
/* Palette: teal-sunset | Radius: tiny | Shadow: dual-subtle */
/* Spacing: tight | Transition: snappy */
/* Section layouts: {"news":"grid-3","features":"grid-2","hero":"minimal","testimonials":"stacked","partners":"grid-4","faq":"single-column","stats":"inline","cta":"centered"} */

:root {
    --color-primary: #0f766e;
    --color-primary-dark: #134e4a;
    --color-accent: #f97316;
    --color-surface: #ecfdf5;
    --color-text: #0c4a6e;
    --rgb-primary: 15, 118, 110;
    --rgb-accent: 249, 115, 22;
    --radius-sm: 2px;
    --radius-md: 4px;
    --radius-lg: 5px;
    --radius-xl: 6px;
    --shadow-sm: 0 1px 3px rgba(var(--rgb-primary), 0.18), 0 1px 2px rgba(var(--rgb-accent), 0.08);
    --shadow-md: 0 2px 6px rgba(var(--rgb-primary), 0.15), 0 1px 4px rgba(var(--rgb-accent), 0.1);
    --shadow-lg: 0 3px 10px rgba(var(--rgb-primary), 0.12), 0 2px 6px rgba(var(--rgb-accent), 0.12);
    --space-section: 3rem;
    --space-card: 1rem;
    --space-gap: 0.75rem;
    --transition: 0.2s ease-out;
    --heading-weight: 700;
    --body-line-height: 1.65;
    --accent-color: #f97316;
    --caret-color: #0f766e;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background-color: #f0fdfa; }
h1, h2, h3, h4 { font-weight: var(--heading-weight); text-shadow: 0 1px 1px rgba(15, 118, 110, 0.07); }
section.news, .section.news { background-color: #d1fae5; border-bottom: 3px solid #0f766e; }
section.features, .section.features { background-color: #ffedd5; border-bottom: 3px solid #f97316; }
section.testimonials, .section.testimonials { background-color: #fef3c7; border-bottom: 3px solid #ea580c; }
section.partners, .section.partners { background-color: #e0f2fe; border-bottom: 3px solid #0369a1; }
section.faq, .section.faq { background-color: #fbcfe8; border-bottom: 3px solid #be185d; }
section.stats, .section.stats { background-color: #f3e8ff; border-bottom: 3px solid #7e22ce; }
section.cta, .section.cta { background-color: #fecdd3; border-bottom: 3px solid #e11d48; }
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); border: 1px solid var(--color-primary); background-color: #ffffff; }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); border: 1px solid var(--color-accent); }
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); }

/* 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; background: linear-gradient(135deg, #0f766e 0%, #14b8a6 100%); color: white; } .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; }

/* partners: grid-4 */
.partner-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: calc(var(--space-gap) * 1.5); align-items: center; }

/* faq: single-column */
.faq-list { max-width: 800px; margin: 0 auto; }

/* stats: inline */
/* 水平排列 */
.stats-grid { display: flex; justify-content: center; gap: 3rem; }

/* cta: centered */
.cta-inner { text-align: center; max-width: 700px; margin: 0 auto; }

/* 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(-2px); box-shadow: var(--shadow-lg); border-color: var(--color-accent); }
a:not([class]):hover { color: var(--color-accent); text-shadow: 0 0 1px rgba(249, 115, 22, 0.3); }
header, .header, .navbar { background: rgba(255, 255, 255, 0.7); backdrop-filter: blur(4px); border-bottom: 1px solid rgba(15, 118, 110, 0.15); }

/* 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: 0.8rem; --space-gap: 0.5rem; }
    .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; }
}