/* CSSVariantEngine v3.0 — 9you-hub.com.cn */
/* Palette: deep-cyan | Radius: medium | Shadow: glow */
/* Spacing: balanced | Transition: smooth */
/* Section layouts: {"news":"masonry-2","features":"grid-2","hero":"minimal","testimonials":"stacked","partners":"scroll","faq":"two-column","stats":"inline","cta":"card-style"} */

:root {
    --color-primary: #0e7490;
    --color-primary-dark: #164e63;
    --color-accent: #06b6d4;
    --color-surface: #ecfeff;
    --color-text: #083344;
    --rgb-primary: 14,116,144;
    --rgb-accent: 6,182,212;
    --radius-sm: 8px;
    --radius-md: 10px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --shadow-sm: 0 0 12px rgba(var(--rgb-accent), 0.18);
    --shadow-md: 0 0 24px rgba(var(--rgb-accent), 0.4);
    --shadow-lg: 0 0 32px rgba(var(--rgb-accent), 0.6), 0 8px 16px rgba(2,44,56,0.12);
    --space-section: 3rem;
    --space-card: 1.25rem;
    --space-gap: 1rem;
    --transition: 0.3s cubic-bezier(0.22, 1, 0.36, 1);
    --heading-weight: 800;
    --body-line-height: 1.7;
    accent-color: var(--color-accent);
    caret-color: var(--color-accent);
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background: #f8fafc; }
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); animation: cardPulse 5s ease-in-out infinite; }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); box-shadow: var(--shadow-sm); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); text-shadow: 0 0 8px rgba(var(--rgb-accent), 0.25); }

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

/* news: masonry-2 */
/* 两列瀑布流 */
.news-grid { column-count: 2; column-gap: var(--space-gap); }
.news-grid .card { break-inside: avoid; margin-bottom: var(--space-gap); background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%); border: 1px solid rgba(var(--rgb-accent), 0.2); }

/* features: grid-2 */
.feature-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: calc(var(--space-gap) * 1.5); background: linear-gradient(135deg, rgba(var(--rgb-accent), 0.1) 0%, rgba(var(--rgb-accent), 0.02) 100%); border-radius: var(--radius-xl); }
.feature-list .card { background: linear-gradient(145deg, #ecfeff 0%, #ffffff 100%); border: 1px solid rgba(var(--rgb-accent), 0.25); }

/* hero: minimal */
.hero { padding: 2rem 0; background: radial-gradient(ellipse at 20% 20%, #cffafe 0%, #ecfeff 50%, #ffffff 100%); box-shadow: inset 0 0 60px rgba(var(--rgb-accent), 0.1); }
.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: var(--color-surface); border: 1px solid rgba(var(--rgb-primary), 0.15); }

/* partners: scroll */
/* 自动滚动 */
.partner-grid { display: flex; gap: 2rem; overflow: hidden; background: linear-gradient(90deg, #164e63 0%, #0e7490 50%, #06b6d4 100%); color: #ecfeff; border-radius: var(--radius-lg); animation: partnerScroll 24s linear infinite, glowPulse 4s ease-in-out infinite; }
@keyframes partnerScroll { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }
@keyframes glowPulse { 0%, 100% { box-shadow: 0 0 18px rgba(var(--rgb-accent), 0.35); } 50% { box-shadow: 0 0 32px rgba(var(--rgb-accent), 0.6); } }
@keyframes cardPulse { 0%, 100% { filter: brightness(1); } 50% { filter: brightness(1.05); } }

/* faq: two-column */
.faq-list { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-gap); }
.faq-list .card { background: #ffffff; border: 1px solid rgba(var(--rgb-primary), 0.18); }

/* stats: inline */
/* 水平排列 */
.stats-grid { display: flex; justify-content: center; gap: 3rem; }
.stats-grid .card { background: #cffafe; border: 1px solid rgba(var(--rgb-accent), 0.35); }

/* cta: card-style */
.cta-inner { background: linear-gradient(135deg, #155e75 0%, #0891b2 55%, #06b6d4 100%); border-radius: var(--radius-xl); padding: 3rem; text-align: center; color: #ecfeff; box-shadow: 0 0 32px rgba(var(--rgb-accent), 0.35); animation: glowPulse 3s ease-in-out infinite; }

/* 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(-4px); box-shadow: 0 0 32px rgba(var(--rgb-accent), 0.6), 0 10px 20px rgba(2,44,56,0.12); border-color: rgba(var(--rgb-accent), 0.6); }
.card { border: 1px solid rgba(var(--rgb-accent), 0.2); }

/* 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; }
}