:root {
    --color-primary: #7a1a2b;
    --color-primary-dark: #2b0a12;
    --color-accent: #ff4d6d;
    --color-surface: #fff7f0;
    --color-text: #190a10;

    --rgb-primary: 122,26,43;
    --rgb-accent: 255,77,109;

    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 6px;
    --radius-xl: 10px;

    --shadow-sm:
        0 1px 0 rgba(var(--rgb-primary), .10),
        0 0 0 1px rgba(122, 26, 43, .08);
    --shadow-md:
        0 2px 10px rgba(var(--rgb-primary), .14),
        0 1px 0 rgba(255,255,255,.55) inset,
        0 0 0 1px rgba(122, 26, 43, .12);
    --shadow-lg:
        0 10px 28px rgba(var(--rgb-primary), .18),
        0 2px 0 rgba(255,255,255,.55) inset,
        0 0 0 1px rgba(122, 26, 43, .16);

    --space-section: 2rem;
    --space-card: 1rem;
    --space-gap: 0.75rem;

    --transition: 240ms cubic-bezier(.2,.9,.2,1);

    --heading-weight: 700;
    --body-line-height: 1.6;
}

/* 基础覆盖 */
body {
    color: var(--color-text);
    line-height: var(--body-line-height);
    background:
        radial-gradient(1200px 600px at 15% 0%, rgba(var(--rgb-accent), .10), transparent 55%),
        radial-gradient(900px 500px at 85% 20%, rgba(var(--rgb-primary), .10), transparent 60%),
        linear-gradient(180deg, rgba(255,247,240,1) 0%, rgba(255,241,248,1) 60%, rgba(255,247,240,1) 100%);
    caret-color: var(--color-accent);
    accent-color: var(--color-accent);
}

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: var(--shadow-md);
    padding: var(--space-card);
    transition:
        transform 180ms cubic-bezier(.2,.85,.2,1),
        box-shadow 240ms cubic-bezier(.2,.9,.2,1),
        border-color 240ms cubic-bezier(.2,.9,.2,1),
        background 240ms cubic-bezier(.2,.9,.2,1);
}

.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition:
        background-color 240ms cubic-bezier(.2,.9,.2,1),
        border-color 240ms cubic-bezier(.2,.9,.2,1),
        transform 180ms cubic-bezier(.2,.85,.2,1),
        box-shadow 240ms cubic-bezier(.2,.9,.2,1),
        color 240ms cubic-bezier(.2,.9,.2,1);
}

a:not([class]) {
    color: var(--color-primary);
    transition: var(--transition);
    text-shadow: 0 0 0 rgba(0,0,0,0);
}

a:not([class]):focus-visible {
    outline-style: solid;
    outline-color: rgba(var(--rgb-accent), .55);
    outline-width: 2px;
    outline-offset: 3px;
    border-radius: var(--radius-sm);
}

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

/* news: featured-left */
/* 左大右小 (1大+2小) */
                .news-grid { display: grid; grid-template-columns: 2fr 1fr; grid-template-rows: auto auto; gap: 0.65rem; }
                .news-grid > *:first-child { grid-row: span 2; }

/* features: grid-2 */
.feature-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.95rem; }

/* 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: grid-6 */
.partner-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 0.65rem; align-items: center; }

/* faq: two-column */
.faq-list { display: grid; grid-template-columns: 1fr 1fr; gap: 0.65rem; }

/* stats: inline */
/* 水平排列 */
                .stats-grid { display: flex; justify-content: center; gap: 2.2rem; }

/* 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(-3px);
    box-shadow:
        0 14px 34px rgba(var(--rgb-primary), .22),
        0 2px 0 rgba(255,255,255,.62) inset,
        0 0 0 1px rgba(122, 26, 43, .22);
    border-left-color: rgba(var(--rgb-accent), .95);
}

a:not([class]):hover {
    color: var(--color-accent);
    text-shadow: 0 1px 0 rgba(255,255,255,.35);
}

.hero, [class*="hero"], section:first-of-type {
    background:
        radial-gradient(800px 260px at 18% 0%, rgba(255,77,109,.26), transparent 58%),
        radial-gradient(760px 260px at 85% 18%, rgba(255,255,255,.22), transparent 60%),
        linear-gradient(135deg, #7a1a2b 0%, #3b0a17 38%, #24060f 100%);
    border-radius: var(--radius-xl);
}

.card { border-left: 3px solid rgba(var(--rgb-primary), .95); }

/* 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; }
}