:root {
    --color-primary: #0f766e;
    --color-primary-dark: #134e4a;
    --color-accent: #f43f5e;
    --color-surface: #fff9f5;
    --color-text: #292524;
    --rgb-primary: 15,118,110;
    --rgb-accent: 244,63,94;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 16px;
    --shadow-sm: 0 2px 8px rgba(15,118,110,.12), 0 0 12px rgba(244,63,94,.25);
    --shadow-md: 0 10px 28px rgba(15,118,110,.16), 0 0 24px rgba(244,63,94,.4);
    --shadow-lg: 0 18px 44px rgba(15,118,110,.2), 0 0 40px rgba(244,63,94,.45);
    --space-section: 5.5rem;
    --space-card: 2.25rem;
    --space-gap: 1.25rem;
    --transition: 0.35s cubic-bezier(.22,1,.36,1);
    --heading-weight: 600;
    --body-line-height: 1.6;
}

body {
    color: var(--color-text);
    line-height: var(--body-line-height);
    background-color: var(--color-surface);
    background-image: radial-gradient(circle at 15% 15%, rgba(244,63,94,.06), transparent 40%), radial-gradient(circle at 85% 80%, rgba(15,118,110,.08), transparent 45%);
}

h1, h2, h3, h4 {
    font-weight: var(--heading-weight);
    color: var(--color-primary-dark);
}

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, #ffffff, #fff3ef);
    animation: glowPulse 5s ease-in-out infinite;
}

.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: var(--transition);
    box-shadow: 0 0 18px rgba(var(--rgb-accent), .3);
}

a:not([class]) {
    color: var(--color-primary);
    transition: var(--transition);
}

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

/* news: featured-top */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-gap);
}

.news-grid > *:first-child {
    grid-column: span 3;
    background: linear-gradient(135deg, rgba(15,118,110,.12), rgba(244,63,94,.18));
    border-left-color: var(--color-accent);
    box-shadow: 0 0 32px rgba(244,63,94,.4), 0 16px 40px rgba(15,118,110,.18);
    animation: none;
}

/* features: grid-2 */
.feature-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: calc(var(--space-gap) * 1.5);
}

/* hero: centered */
.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

/* testimonials: carousel */
.testimonial-list {
    display: flex;
    overflow: hidden;
}

.testimonial-list > * {
    flex: 0 0 100%;
}

/* partners: grid-6 */
.partner-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--space-gap);
    align-items: center;
}

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

/* stats: big-number */
.stats-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1.75rem;
}

.stats-grid .stat-value {
    font-size: 3rem;
    color: var(--color-accent);
    text-shadow: 0 0 20px rgba(var(--rgb-accent), .35);
}

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

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

/* 条件性装饰 */
a:not([class]):hover {
    color: var(--color-accent);
    text-shadow: 0 0 12px rgba(var(--rgb-accent), .4);
}

.card {
    border-left: 3px solid var(--color-primary);
}

header, .header, .navbar {
    box-shadow: 0 1px 0 rgba(15,118,110,.08), 0 8px 24px rgba(15,118,110,.1), 0 0 24px rgba(244,63,94,.12);
    background-color: rgba(255,249,245,.85);
    backdrop-filter: blur(12px);
}

@keyframes glowPulse {
    0%, 100% {
        box-shadow: 0 10px 28px rgba(15,118,110,.16), 0 0 24px rgba(244,63,94,.4);
    }
    50% {
        box-shadow: 0 14px 36px rgba(15,118,110,.22), 0 0 32px rgba(244,63,94,.6);
    }
}

/* 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;
    }
}