:root {
    --color-primary: #0b5bd7;
    --color-primary-dark: #083a8a;
    --color-accent: #ffb703;
    --color-surface: #fff7e6;
    --color-text: #0f172a;
    --rgb-primary: 11,91,215;
    --rgb-accent: 255,183,3;
    --radius-sm: 3px;
    --radius-md: 4px;
    --radius-lg: 2px;
    --radius-xl: 0px;
    --shadow-sm: 4px 4px 0 rgba(9, 30, 66, .18);
    --shadow-md: 4px 4px 0 rgba(9, 30, 66, .22), 0 10px 22px rgba(2, 6, 23, .10);
    --shadow-lg: 4px 4px 0 rgba(9, 30, 66, .26), 0 16px 30px rgba(2, 6, 23, .13);
    --space-section: 3rem;
    --space-card: 1.25rem;
    --space-gap: 1rem;
    --transition: 0.15s cubic-bezier(.2,.9,.2,1);
    --heading-weight: 650;
    --body-line-height: 1.65;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background: linear-gradient(180deg, rgba(255,247,230,.7) 0%, rgba(255,247,230,0) 45%); }
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: 4px 4px 0 rgba(9, 30, 66, .22), 0 14px 26px rgba(2, 6, 23, .10), inset 0 0 0 2px rgba(11,91,215,.10); padding: var(--space-card); transition: var(--transition); background: var(--color-surface); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); box-shadow: 4px 4px 0 rgba(9, 30, 66, .18); outline: 2px solid rgba(11,91,215,.18); outline-offset: 0px; }
a:not([class]) { color: var(--color-primary); transition: var(--transition); text-shadow: 0 1px 0 rgba(255,183,3,.18); }

a:hover { color: #0a49a6; }
a:focus { outline-color: rgba(255,183,3,.65); }

/* ========== 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; border-radius: var(--radius-lg); box-shadow: 4px 4px 0 rgba(9, 30, 66, .24), 0 12px 20px rgba(2, 6, 23, .10), inset 0 0 0 2px rgba(255,183,3,.18); }

/* features: grid-4 */
.feature-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); }
.feature-list .card { background: #ffffff; border-radius: var(--radius-lg); box-shadow: 4px 4px 0 rgba(9, 30, 66, .20), 0 10px 18px rgba(2, 6, 23, .08), inset 0 0 0 2px rgba(11,91,215,.14); }

/* hero: centered */
.hero-content { text-align: center; max-width: 800px; margin: 0 auto; }
.hero-content * { text-shadow: 0 1px 0 rgba(255,255,255,.35); }

/* testimonials: carousel */
/* 单条轮播 */
                .testimonial-list { display: flex; overflow: hidden; } 
                .testimonial-list > * { flex: 0 0 100%; }
                .testimonial-list .card { background: linear-gradient(180deg, #ffffff 0%, #fff7e6 100%); border-radius: var(--radius-lg); box-shadow: 4px 4px 0 rgba(9, 30, 66, .22), 0 16px 26px rgba(2, 6, 23, .12), inset 0 0 0 2px rgba(255,183,3,.18); }

/* partners: grid-4 */
.partner-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: calc(var(--space-gap) * 1.5); align-items: center; }
.partner-grid .card { background: rgba(255,247,230,.95); border-radius: var(--radius-lg); box-shadow: 4px 4px 0 rgba(9, 30, 66, .18), 0 12px 20px rgba(2, 6, 23, .10); border: 2px solid rgba(11,91,215,.16); }

/* faq: with-sidebar */
/* FAQ 左 + 联系信息右 */
                .faq-wrapper { display: grid; grid-template-columns: 2fr 1fr; gap: 2rem; }
                .faq-wrapper .card { border-radius: var(--radius-lg); box-shadow: 4px 4px 0 rgba(9, 30, 66, .23), 0 16px 28px rgba(2, 6, 23, .12), inset 0 0 0 2px rgba(11,91,215,.14); }

/* stats: grid-4 */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); text-align: center; }
.stats-grid .card { border-radius: var(--radius-lg); box-shadow: 4px 4px 0 rgba(9, 30, 66, .20), 0 10px 18px rgba(2, 6, 23, .08), inset 0 0 0 2px rgba(255,183,3,.16); }

/* cta: full-bg */
.cta-section { background: linear-gradient(90deg, #083a8a 0%, #0b5bd7 42%, #ffb703 100%); color: #ffffff; padding: 4rem 2rem; border-radius: var(--radius-xl); box-shadow: 4px 4px 0 rgba(0,0,0,.22), 0 22px 44px rgba(2, 6, 23, .22); border: 3px solid rgba(255,255,255,.22); }
.cta-section * { text-shadow: 0 1px 0 rgba(0,0,0,.25); }
.cta-section a:not([class]) { color: #fff; text-shadow: 0 1px 0 rgba(0,0,0,.35); }

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

/* 条件性装饰 */
header, .header, .navbar { box-shadow: 4px 4px 0 rgba(9, 30, 66, .20), 0 10px 22px rgba(2, 6, 23, .10); background: rgba(255,255,255,.78); border-bottom: 3px solid rgba(11,91,215,.18); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); border-radius: 0px; }

/* 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; }
}