:root {
    --color-primary: #0d9488;
    --color-primary-dark: #134e4a;
    --color-accent: #f43f5e;
    --color-surface: #f0fdfa;
    --color-text: #0f172a;
    --rgb-primary: 13,148,136;
    --rgb-accent: 244,63,94;
    --radius-sm: 4px;
    --radius-md: 10px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --shadow-sm: 0 1px 3px rgba(13,148,136,.12), 0 1px 2px rgba(244,63,94,.06);
    --shadow-md: 0 2px 8px rgba(13,148,136,.14), 0 4px 16px rgba(244,63,94,.08), 0 1px 3px rgba(15,23,42,.06);
    --shadow-lg: 0 8px 24px rgba(13,148,136,.18), 0 4px 12px rgba(244,63,94,.12), 0 16px 40px rgba(15,23,42,.08);
    --space-section: 5rem;
    --space-card: 2rem;
    --space-gap: 1.5rem;
    --transition: 0.5s cubic-bezier(0.22, 1, 0.36, 1);
    --heading-weight: 600;
    --body-line-height: 1.6;
}

body { color: var(--color-text); line-height: var(--body-line-height); background: linear-gradient(165deg, #f0fdfa 0%, #ecfeff 40%, #fdf2f8 100%); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); background: linear-gradient(120deg, #0d9488, #f43f5e, #0d9488); -webkit-background-clip: text; background-clip: text; }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); }
section:nth-child(odd), .section:nth-child(odd) { background: linear-gradient(135deg, rgba(13,148,136,.04) 0%, rgba(244,63,94,.03) 50%, rgba(13,148,136,.06) 100%); }
section:nth-child(even), .section:nth-child(even) { background: linear-gradient(225deg, rgba(244,63,94,.04) 0%, rgba(13,148,136,.03) 50%, rgba(244,63,94,.06) 100%); }
.card, [class*="card"] { border-radius: var(--radius-lg); box-shadow: var(--shadow-md); padding: var(--space-card); transition: var(--transition); background: linear-gradient(160deg, #ffffff 0%, #f0fdfa 60%, #fce7f3 100%); border: 1px solid transparent; border-image: linear-gradient(135deg, rgba(13,148,136,.25), rgba(244,63,94,.2)) 1; }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background: linear-gradient(135deg, #0d9488, #0f766e, #134e4a); box-shadow: 0 2px 8px rgba(13,148,136,.3), 0 1px 3px rgba(244,63,94,.15); }
a:not([class]) { color: var(--color-primary); transition: var(--transition); text-decoration-color: rgba(13,148,136,.4); }
a:not([class]):hover { color: var(--color-accent); }

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

/* news: featured-top */
/* 首篇横跨全宽 */
                .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(120deg, rgba(13,148,136,.08) 0%, rgba(244,63,94,.06) 100%); border-radius: var(--radius-xl); }

/* 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; }
                .feature-list > *:nth-child(odd) { background: linear-gradient(135deg, #ffffff, #f0fdfa); }
                .feature-list > *:nth-child(even) { background: linear-gradient(225deg, #ffffff, #fdf2f8); }

/* hero: split */
/* 左文右图 */
                .hero-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; align-items: center; background: linear-gradient(135deg, rgba(13,148,136,.06), rgba(244,63,94,.05)); border-radius: var(--radius-xl); }

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

/* partners: scroll */
/* 自动滚动 */
                .partner-grid { display: flex; gap: 2rem; overflow: hidden; animation: partnerScroll 20s linear infinite; }
                @keyframes partnerScroll { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

/* faq: with-sidebar */
/* FAQ 左 + 联系信息右 */
                .faq-wrapper { display: grid; grid-template-columns: 2fr 1fr; gap: 2rem; }
                .faq-wrapper > *:last-child { background: linear-gradient(160deg, rgba(13,148,136,.06), rgba(244,63,94,.04)); border-radius: var(--radius-lg); padding: var(--space-card); }

/* stats: inline */
/* 水平排列 */
                .stats-grid { display: flex; justify-content: center; gap: 3rem; }
                .stats-grid > * { background: linear-gradient(135deg, rgba(13,148,136,.08), rgba(244,63,94,.06)); border-radius: var(--radius-md); padding: 1rem 1.5rem; }

/* cta: centered */
.cta-inner { text-align: center; max-width: 700px; margin: 0 auto; background: linear-gradient(135deg, rgba(13,148,136,.05), rgba(244,63,94,.05), rgba(13,148,136,.03)); border-radius: var(--radius-xl); }

/* 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: var(--shadow-lg); border-image: linear-gradient(135deg, rgba(13,148,136,.4), rgba(244,63,94,.35)) 1; }
header, .header, .navbar { background: linear-gradient(180deg, rgba(240,253,250,.9), rgba(240,253,250,.6)); backdrop-filter: blur(12px); }

/* 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; }
}