:root {
    --color-primary: #0b3b78;
    --color-primary-dark: #08315f;
    --color-accent: #ff4fd8;
    --color-surface: #f6fbff;
    --color-text: #071526;
    --rgb-primary: 11,59,120;
    --rgb-accent: 255,79,216;

    --radius-sm: 10px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 26px;

    --shadow-sm:
        0 1px 0 rgba(0,0,0,.06),
        0 3px 10px rgba(10,42,84,.10);
    --shadow-md:
        0 10px 26px rgba(5,20,45,.10),
        0 2px 10px rgba(5,20,45,.06),
        0 1px 0 rgba(255,255,255,.55) inset;
    --shadow-lg:
        0 18px 44px rgba(5,20,45,.14),
        0 6px 22px rgba(5,20,45,.08),
        0 1px 0 rgba(255,255,255,.58) inset;

    --space-section: 3rem;
    --space-card: 1.25rem;
    --space-gap: 1rem;

    --transition: 340ms cubic-bezier(.18,.9,.22,1);
    --heading-weight: 700;
    --body-line-height: 1.7;
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background-color: var(--color-surface); }
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 18px 40px rgba(2,18,40,.12),
        0 6px 18px rgba(2,18,40,.07),
        0 1px 0 rgba(255,255,255,.7) inset,
        0 0 0 1px rgba(255,255,255,.35);
    padding: var(--space-card);
    transition: transform var(--transition), box-shadow var(--transition), background-color var(--transition), border-color var(--transition), filter var(--transition);
    background:
        radial-gradient(120% 120% at 20% 0%, rgba(255,255,255,.86) 0%, rgba(255,255,255,.62) 25%, rgba(255,255,255,.22) 60%, rgba(255,255,255,0) 72%),
        linear-gradient(180deg, rgba(255,255,255,.65), rgba(255,255,255,.35));
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: transform var(--transition), box-shadow var(--transition), background-color var(--transition), color var(--transition), border-color var(--transition);
}
a:not([class]) { color: var(--color-primary); transition: color var(--transition), text-shadow var(--transition); }
a:not([class]):focus { outline: 2px solid rgba(var(--rgb-accent), .45); outline-offset: 3px; border-radius: var(--radius-sm); }

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

/* news: grid-4 */
/* 四列紧凑网格 */
                .news-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: calc(var(--space-gap) * 0.8); }
.news-grid > * { border-radius: var(--radius-lg); }

/* features: grid-3 */
.feature-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }
.feature-list > * { border-radius: var(--radius-lg); }

/* hero: split */
/* 左文右图 */
                .hero-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; align-items: center; }
.hero-inner > * { border-radius: var(--radius-xl); }

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

/* partners: scroll */
/* 自动滚动 */
                .partner-grid { display: flex; gap: 2rem; overflow: hidden; animation: partnerScroll 22s 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 > * { border-radius: var(--radius-xl); }

/* stats: inline */
/* 水平排列 */
                .stats-grid { display: flex; justify-content: center; gap: 3rem; }

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

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

/* 条件性装饰 */
.card:hover, [class*="card"]:hover {
    transform: translateY(-6px);
    box-shadow:
        0 26px 62px rgba(2,18,40,.16),
        0 10px 28px rgba(2,18,40,.10),
        0 1px 0 rgba(255,255,255,.75) inset,
        0 0 0 1px rgba(255,255,255,.42);
    filter: saturate(1.06);
}

a:not([class]):hover {
    color: var(--color-accent);
    text-shadow:
        0 8px 24px rgba(255,79,216,.25),
        0 0 18px rgba(255,79,216,.22);
}

.hero, [class*="hero"], section:first-of-type {
    background:
        radial-gradient(140% 120% at 12% 0%, rgba(255,255,255,.35) 0%, rgba(255,255,255,0) 55%),
        radial-gradient(90% 80% at 85% 15%, rgba(255,79,216,.35) 0%, rgba(255,79,216,0) 60%),
        linear-gradient(135deg, #0b3b78 0%, #08315f 48%, #1d4ed8 100%);
}

/* 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; }

    .card, [class*="card"] {
        border-radius: 18px;
        box-shadow:
            0 14px 34px rgba(2,18,40,.12),
            0 5px 14px rgba(2,18,40,.06),
            0 1px 0 rgba(255,255,255,.7) inset,
            0 0 0 1px rgba(255,255,255,.32);
    }
}