:root {
    --color-primary: #0d4e76;
    --color-primary-dark: #05304a;
    --color-accent: #2ec4b6;
    --color-surface: #e6fffa;
    --color-text: #102a43;
    --rgb-primary: 13,78,118;
    --rgb-accent: 46,196,182;
    --radius-sm: 12px;
    --radius-md: 14px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --shadow-sm: 0 0 8px rgba(46,196,182,0.24), 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 0 24px rgba(46,196,182,0.4), 0 6px 12px rgba(0,0,0,0.12);
    --shadow-lg: 0 0 38px rgba(46,196,182,0.32), 0 10px 25px rgba(0,0,0,0.1);
    --space-section: 2.4rem;
    --space-card: 1.2rem;
    --space-gap: 0.5rem;
    --transition: 0.6s cubic-bezier(0.55, 0.085, 0.68, 0.53);
    --heading-weight: 700;
    --body-line-height: 1.65;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); }
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:
        0 0 15px rgba(var(--rgb-accent), 0.36),
        inset 0 0 8px rgba(var(--rgb-accent), 0.18);
    padding: var(--space-card);
    transition: var(--transition);
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: var(--transition);
}
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: horizontal */
/* 水平滚动 */
.feature-list {
    display: flex;
    gap: var(--space-gap);
    overflow-x: auto;
    scroll-snap-type: x mandatory;
}
.feature-list > * {
    flex: 0 0 300px;
    scroll-snap-align: start;
}

/* hero: overlay */
/* 全屏背景+文字覆盖 */
.hero {
    position: relative;
    min-height: 70vh;
    display: flex;
    align-items: center;
    background: radial-gradient(circle at center, #065666, #032a38);
    box-shadow:
        0 0 32px rgba(var(--rgb-accent), 0.6),
        inset 0 0 24px rgba(2,40,58,0.8);
}
.hero-content {
    position: relative;
    z-index: 1;
}

/* testimonials: carousel */
/* 单条轮播 */
.testimonial-list {
    display: flex;
    overflow: hidden;
    filter: drop-shadow(0 0 10px rgba(var(--rgb-accent), 0.3));
}
.testimonial-list > * {
    flex: 0 0 100%;
}

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

/* faq: with-sidebar */
/* FAQ 左 + 联系信息右 */
.faq-wrapper {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
}

/* stats: big-number */
/* 大数字居中 */
.stats-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2rem;
}
.stats-grid .stat-value {
    font-size: 3rem;
    text-shadow: 0 0 8px rgba(var(--rgb-accent), 0.45);
}

/* cta: card-style */
.cta-inner {
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    padding: 3rem;
    text-align: center;
    box-shadow:
        0 0 20px rgba(var(--rgb-accent), 0.4);
}

/* Page Layout: full-width */
/* 无侧边栏, 全宽 */
.page-main {
    max-width: 1200px;
    margin: 0 auto;
}

/* 条件性装饰 */
.hero, [class*="hero"], section:first-of-type {
    background: linear-gradient(
        125deg,
        #074c62 0%,
        #022635 60%
    );
    box-shadow:
        0 0 28px rgba(var(--rgb-accent), 0.5);
}
.card {
    border-left: 3px solid var(--color-primary);
    border-style: double;
}

/* 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;
    }
}