:root {
    --color-primary: #8a1e3a;
    --color-primary-dark: #3a0714;
    --color-accent: #ff4d6d;
    --color-surface: #f7f8fb;
    --color-text: #1a1220;
    --rgb-primary: 138,30,58;
    --rgb-accent: 255,77,109;
    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --shadow-sm: 0 10px 20px rgba(17, 24, 39, .08), 0 2px 6px rgba(17, 24, 39, .05);
    --shadow-md: 0 18px 35px rgba(17, 24, 39, .10), 0 5px 12px rgba(17, 24, 39, .06);
    --shadow-lg: 0 28px 70px rgba(17, 24, 39, .12), 0 12px 25px rgba(17, 24, 39, .08);
    --space-section: 5rem;
    --space-card: 2rem;
    --space-gap: 1.5rem;
    --transition: 460ms cubic-bezier(0.16, 1, 0.3, 1);
    --heading-weight: 800;
    --body-line-height: 1.75;
}

body { color: var(--color-text); line-height: var(--body-line-height); background: linear-gradient(180deg, #f4f6fb 0%, #f7f8fb 45%, #f2f4fb 100%); }
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 22px 48px rgba(20, 10, 18, .10),
        0 10px 18px rgba(20, 10, 18, .06),
        0 1px 0 rgba(255,255,255,.75) inset;
    background:
        radial-gradient(1200px 240px at 15% 0%, rgba(255,77,109,.10) 0%, rgba(255,77,109,0) 55%),
        radial-gradient(700px 160px at 90% 10%, rgba(138,30,58,.08) 0%, rgba(138,30,58,0) 50%),
        #ffffff;
    padding: var(--space-card); transition: var(--transition); backdrop-filter: blur(8px); }
.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); text-shadow: 0 1px 0 rgba(255,255,255,.55); }

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

/* news: grid-3 */
/* 三列等宽网格 */
                .news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }

/* features: grid-2 */
.feature-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: calc(var(--space-gap) * 1.5); }

/* hero: left-aligned */
.hero-content { text-align: left; max-width: 600px; }

/* testimonials: stacked */
/* 垂直堆叠 */
                .testimonial-list { display: flex; flex-direction: column; gap: var(--space-gap); max-width: 720px; margin: 0 auto; }

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

/* faq: with-sidebar */
/* FAQ 左 + 联系信息右 */
                .faq-wrapper { display: grid; grid-template-columns: 2fr 1fr; gap: 2rem; }

/* stats: big-number */
/* 大数字居中 */
                .stats-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 2rem; }
                .stats-grid .stat-value { font-size: 3rem; text-shadow:
        0 1px 0 rgba(255,255,255,.8),
        0 14px 30px rgba(138,30,58,.10); }

/* cta: card-style */
.cta-inner { background:
        radial-gradient(1100px 260px at 0% 0%, rgba(255,77,109,.16) 0%, rgba(255,77,109,0) 55%),
        radial-gradient(800px 240px at 100% 20%, rgba(138,30,58,.14) 0%, rgba(138,30,58,0) 55%),
        linear-gradient(180deg, #ffffff 0%, #f7f8ff 100%);
    border-radius: var(--radius-xl); padding: 3rem; text-align: center;
    box-shadow:
        0 26px 65px rgba(20, 10, 18, .12),
        0 8px 18px rgba(20, 10, 18, .06),
        0 1px 0 rgba(255,255,255,.9) inset;
    border: 1px solid rgba(138,30,58,.10); }

/* Page Layout: wide */
/* 超宽 */
            .page-main { max-width: 1400px; margin: 0 auto; }

/* 条件性装饰 */
.card { border-left: 4px solid transparent;
    border-image: linear-gradient(180deg, rgba(255,77,109,.95) 0%, rgba(138,30,58,.95) 100%) 1; }
header, .header, .navbar { box-shadow:
        0 10px 26px rgba(17, 24, 39, .08),
        0 2px 8px rgba(17, 24, 39, .06);
    background: rgba(255,255,255,.78);
    border-bottom: 1px solid rgba(138,30,58,.10);
    backdrop-filter: blur(10px); }

/* 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; --radius-md: 14px; --radius-lg: 18px; --radius-xl: 24px; }
    .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; box-shadow:
        0 20px 50px rgba(20, 10, 18, .11),
        0 6px 14px rgba(20, 10, 18, .06),
        0 1px 0 rgba(255,255,255,.9) inset; }
}