:root {
    --color-primary: #0f766e;
    --color-primary-dark: #115e59;
    --color-accent: #f59e0b;
    --color-surface: #f8fafc;
    --color-text: #0f172a;
    --rgb-primary: 15,118,110;
    --rgb-accent: 245,158,11;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --shadow-sm:
        0 2px 6px rgba(2, 6, 23, 0.08),
        0 8px 18px rgba(2, 6, 23, 0.06);
    --shadow-md:
        0 4px 10px rgba(2, 6, 23, 0.08),
        0 18px 40px -14px rgba(2, 6, 23, 0.14);
    --shadow-lg:
        0 10px 22px rgba(2, 6, 23, 0.10),
        0 28px 60px -22px rgba(2, 6, 23, 0.18);
    --space-section: 2rem;
    --space-card: 1rem;
    --space-gap: 0.75rem;
    --transition: 0.38s cubic-bezier(.2,.8,.2,1);
    --heading-weight: 700;
    --body-line-height: 1.75;
}

body { color: var(--color-text); line-height: var(--body-line-height); background: #eef2ff; }
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 4px 8px rgba(2, 6, 23, 0.05),
        0 20px 40px -10px rgba(2, 6, 23, 0.12),
        0 1px 0 rgba(255, 255, 255, 0.7) inset;
    padding: var(--space-card);
    transition: var(--transition);
    background:
        linear-gradient(180deg, rgba(255,255,255,0.98), rgba(255,255,255,0.90));
}
.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); }

:root { caret-color: var(--color-accent); accent-color: var(--color-primary); }

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

/* news: list-view */
/* 列表模式 (图左文右) */
                .news-grid { display: flex; flex-direction: column; gap: var(--space-gap); }
                .news-grid .card { display: grid; grid-template-columns: 280px 1fr; }

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

/* testimonials: carousel */
/* 单条轮播 */
                .testimonial-list { display: flex; overflow: hidden; } 
                .testimonial-list > * { flex: 0 0 100%; }

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

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

/* stats: grid-3 */
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); text-align: center; }

/* cta: card-style */
.cta-inner {
    background:
        radial-gradient(1200px 320px at 20% 0%, rgba(15,118,110,0.14), rgba(15,118,110,0) 55%),
        radial-gradient(900px 260px at 85% 20%, rgba(245,158,11,0.16), rgba(245,158,11,0) 52%),
        linear-gradient(180deg, rgba(255,255,255,0.96), rgba(255,255,255,0.88));
    border-radius: var(--radius-xl);
    padding: 3rem;
    text-align: center;
    box-shadow:
        0 10px 22px rgba(2, 6, 23, 0.08),
        0 30px 70px -30px rgba(2, 6, 23, 0.18);
}

/* 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); }
.hero, [class*="hero"], section:first-of-type {
    background:
        radial-gradient(900px 340px at 12% 10%, rgba(245,158,11,0.28), rgba(245,158,11,0) 55%),
        radial-gradient(820px 340px at 88% 20%, rgba(15,118,110,0.32), rgba(15,118,110,0) 58%),
        linear-gradient(135deg, #0f766e, #115e59);
}
.hero, [class*="hero"], section:first-of-type {
    color: rgba(255, 255, 255, 0.92);
}
.hero, [class*="hero"], section:first-of-type * {
    text-shadow: 0 1px 0 rgba(0,0,0,0.08);
}

/* 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; }
}