/* CSSVariantEngine v3.0 — app-longhudou.com.cn */
/* Palette: royal | Radius: rounded | Shadow: strong */
/* Spacing: balanced | Transition: quick */
/* Section layouts: {"news":"masonry-2","features":"grid-4","hero":"left-aligned","testimonials":"stacked","partners":"grid-4","faq":"two-column","stats":"inline","cta":"card-style"} */

:root {
    --color-primary: #0ea5e9;
    --color-primary-dark: #0f766e;
    --color-accent: #f97316;
    --color-surface: #f8fafc;
    --color-text: #102033;
    --rgb-primary: 14,165,233;
    --rgb-accent: 249,115,22;
    --radius-sm: 10px;
    --radius-md: 18px;
    --radius-lg: 22px;
    --radius-xl: 34px;
    --shadow-sm: 0 3px 10px rgba(15,118,110,.10), 0 1px 2px rgba(16,32,51,.08);
    --shadow-md: 0 14px 28px rgba(14,165,233,.14), 0 6px 12px rgba(16,32,51,.10), inset 0 1px 0 rgba(255,255,255,.65);
    --shadow-lg: 0 26px 58px rgba(15,118,110,.18), 0 12px 24px rgba(249,115,22,.10), inset 0 1px 0 rgba(255,255,255,.70);
    --space-section: 3rem;
    --space-card: 1.25rem;
    --space-gap: 1rem;
    --transition: 0.52s cubic-bezier(.19, 1, .22, 1);
    --heading-weight: 600;
    --body-line-height: 1.65;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background: radial-gradient(circle at 12% 8%, rgba(14,165,233,.16) 0%, rgba(14,165,233,0) 32%), radial-gradient(circle at 88% 18%, rgba(249,115,22,.14) 0%, rgba(249,115,22,0) 30%), linear-gradient(135deg, #f8fafc 0%, #eef9ff 42%, #fff7ed 100%); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); color: #0b3045; text-shadow: 0 1px 0 rgba(255,255,255,.75), 0 8px 24px rgba(14,165,233,.12); }
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: linear-gradient(145deg, rgba(255,255,255,.94) 0%, rgba(236,253,245,.88) 38%, rgba(239,246,255,.92) 68%, rgba(255,247,237,.90) 100%); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background: linear-gradient(135deg, #0ea5e9 0%, #14b8a6 45%, #f97316 100%); color: #ffffff; box-shadow: 0 12px 26px rgba(14,165,233,.22), 0 4px 10px rgba(249,115,22,.16); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); text-shadow: 0 4px 18px rgba(14,165,233,.10); }

/* ========== 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(150deg, #ffffff 0%, #e0f2fe 42%, #fef3c7 100%); box-shadow: 0 16px 32px rgba(2,132,199,.14), 0 6px 14px rgba(180,83,9,.10); }

/* features: grid-4 */
.feature-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); }

/* hero: left-aligned */
.hero-content { text-align: left; max-width: 600px; color: #f8fafc; text-shadow: 0 2px 16px rgba(8,47,73,.26); }

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

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

/* cta: card-style */
.cta-inner { background: radial-gradient(circle at 18% 20%, rgba(45,212,191,.34) 0%, rgba(45,212,191,0) 34%), radial-gradient(circle at 82% 18%, rgba(251,146,60,.30) 0%, rgba(251,146,60,0) 36%), linear-gradient(135deg, #ecfeff 0%, #f0f9ff 46%, #fff7ed 100%); border-radius: var(--radius-xl); padding: 3rem; text-align: center; box-shadow: var(--shadow-lg); }

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

/* 条件性装饰 */
a:not([class]):hover { color: var(--color-accent); text-shadow: 0 6px 20px rgba(249,115,22,.18); }
.hero, [class*="hero"], section:first-of-type { background: linear-gradient(135deg, #075985 0%, #0e7490 34%, #14b8a6 62%, #f97316 100%); }
.card { border: 1px solid rgba(var(--rgb-primary), .22); border-style: solid; border-image: linear-gradient(135deg, rgba(14,165,233,.62) 0%, rgba(20,184,166,.38) 48%, rgba(249,115,22,.56) 100%) 1; }
header, .header, .navbar { box-shadow: 0 8px 24px rgba(8,47,73,.10), 0 2px 8px rgba(14,165,233,.08); background: linear-gradient(180deg, rgba(255,255,255,.92) 0%, rgba(240,249,255,.86) 100%); backdrop-filter: blur(14px) saturate(1.18); }

/* 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; }
}