/* CSSVariantEngine v3.0 — chcn-kaiyun-m.com.cn */
/* Palette: arctic-neon | Radius: medium | Shadow: glow */
/* Spacing: spacious | Transition: fluid */
/* Section layouts: {"news":"grid-3","features":"centered","hero":"left-aligned","testimonials":"grid-3","partners":"grid-4","faq":"two-column","stats":"inline","cta":"card-style"} */

:root {
    --color-primary: #22d3ee;
    --color-primary-dark: #0e7490;
    --color-accent: #a3e635;
    --color-surface: #0c1626;
    --color-text: #e7eef9;
    --rgb-primary: 34,211,238;
    --rgb-accent: 163,230,53;
    --radius-sm: 8px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 18px;
    --shadow-sm:
        0 0 12px rgba(var(--rgb-accent), 0.14),
        0 2px 8px rgba(3, 7, 18, 0.32);
    --shadow-md:
        0 0 22px rgba(var(--rgb-accent), 0.2),
        0 12px 28px rgba(3, 7, 18, 0.38);
    --shadow-lg:
        0 0 40px rgba(var(--rgb-accent), 0.3),
        0 20px 46px rgba(3, 7, 18, 0.46);
    --space-section: 5rem;
    --space-card: 2rem;
    --space-gap: 1.5rem;
    --transition: 0.45s cubic-bezier(0.22, 1, 0.36, 1);
    --heading-weight: 700;
    --body-line-height: 1.65;
}

/* 基础覆盖 */
body {
    color: var(--color-text);
    line-height: var(--body-line-height);
    background-color: #08101d;
    background-image:
        radial-gradient(90rem 36rem at 50% -12%, rgba(var(--rgb-primary), 0.14), transparent 60%),
        linear-gradient(180deg, #0d1730 0%, #0a1324 38%, #0c1b33 70%, #07101f 100%);
    background-attachment: fixed;
    caret-color: var(--color-accent);
    accent-color: var(--color-accent);
    color-scheme: dark;
}
h1, h2, h3, h4 {
    font-weight: var(--heading-weight);
    color: #f5f9ff;
    text-shadow:
        0 0 16px rgba(var(--rgb-primary), 0.12),
        0 2px 10px rgba(2, 8, 23, 0.3);
}
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-color: rgba(13, 20, 38, 0.62);
    background-image:
        linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.015) 22%, rgba(255,255,255,0.03));
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: var(--transition);
    box-shadow: 0 0 18px rgba(var(--rgb-primary), 0.12);
}
a:not([class]) {
    color: var(--color-primary);
    transition: var(--transition);
    text-shadow: 0 0 14px rgba(var(--rgb-primary), 0.12);
}

/* ========== 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: centered */
/* 居中大卡片 */
.feature-list { display: flex; flex-direction: column; align-items: center; gap: calc(var(--space-gap) * 2); max-width: 720px; margin: 0 auto; }

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

/* testimonials: grid-3 */
.testimonial-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }

/* 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-color: #0e1b34;
    background-image:
        radial-gradient(42rem 18rem at 10% 0%, rgba(var(--rgb-accent), 0.2), transparent 60%),
        radial-gradient(48rem 22rem at 90% 100%, rgba(var(--rgb-primary), 0.22), transparent 55%),
        linear-gradient(135deg, #111f3a 0%, #0b1628 52%, #152a44 100%);
    border-radius: var(--radius-xl);
    padding: 3rem;
    text-align: center;
    box-shadow:
        0 0 40px rgba(var(--rgb-primary), 0.16),
        0 24px 52px rgba(2, 8, 23, 0.35),
        inset 0 1px 0 rgba(255, 255, 255, 0.06);
    animation: glowPulse 5s ease-in-out infinite;
}

/* Page Layout: full-width */
/* 无侧边栏, 全宽 */
.page-main { max-width: 1200px; 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 0 90px rgba(var(--rgb-accent), 0.16),
        0 16px 38px rgba(2, 8, 23, 0.38);
}
a:not([class]):hover {
    color: var(--color-accent);
    text-shadow: 0 0 14px rgba(var(--rgb-accent), 0.45);
}

@keyframes glowPulse {
    0%, 100% {
        box-shadow:
            0 0 30px rgba(var(--rgb-primary), 0.14),
            0 22px 50px rgba(2, 8, 23, 0.35),
            inset 0 1px 0 rgba(255, 255, 255, 0.05);
    }
    50% {
        box-shadow:
            0 0 60px rgba(var(--rgb-accent), 0.22),
            0 26px 58px rgba(2, 8, 23, 0.42),
            inset 0 1px 0 rgba(255, 255, 255, 0.08);
    }
}

/* 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; }
}