:root {
    --color-primary: #4338ca;
    --color-primary-dark: #312e81;
    --color-accent: #e11d48;
    --color-surface: #f5f3ff;
    --color-text: #1e1b4b;
    --rgb-primary: 67,56,202;
    --rgb-accent: 225,29,72;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --shadow-sm: 0 2px 10px -2px rgba(var(--rgb-primary),.30), 0 1px 3px rgba(var(--rgb-accent),.14);
    --shadow-md: 0 10px 28px -8px rgba(var(--rgb-primary),.36), 0 4px 12px -4px rgba(var(--rgb-accent),.22);
    --shadow-lg: 0 26px 60px -14px rgba(var(--rgb-primary),.44), 0 10px 24px -8px rgba(var(--rgb-accent),.30);
    --space-section: 3rem;
    --space-card: 1.25rem;
    --space-gap: 1rem;
    --transition: 0.45s cubic-bezier(0.22, 1, 0.36, 1);
    --heading-weight: 600;
    --body-line-height: 1.65;
}

/* 基础覆盖 */
body {
    color: var(--color-text);
    line-height: var(--body-line-height);
    background-color: var(--color-surface);
    background-image: radial-gradient(1200px 620px at 6% -12%, #ede9fe 0%, rgba(237,233,254,0) 62%), radial-gradient(900px 520px at 100% 0%, #ffe4e6 0%, rgba(255,228,230,0) 58%), linear-gradient(158deg, #f8fafc 0%, #f5f3ff 46%, #eef2ff 72%, #fdf2f8 100%);
    accent-color: var(--color-accent);
    caret-color: var(--color-accent);
}
h1, h2, h3, h4 { font-weight: var(--heading-weight); color: var(--color-primary-dark); }
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), inset 0 0 0 1px rgba(var(--rgb-primary),.16);
    padding: var(--space-card);
    transition: var(--transition);
    background-color: rgba(255,255,255,.86);
    background-image: linear-gradient(152deg, rgba(255,255,255,.96) 0%, rgba(245,243,255,.92) 38%, rgba(238,242,255,.88) 68%, rgba(252,231,243,.82) 100%);
    border-color: rgba(var(--rgb-primary),.22);
    border-style: solid;
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: var(--transition);
    color: #ffffff;
    background-color: var(--color-primary);
    background-image: linear-gradient(128deg, #312e81 0%, #4338ca 32%, #7c3aed 64%, #e11d48 100%);
    box-shadow: 0 8px 22px -8px rgba(var(--rgb-primary),.55), 0 3px 8px -3px rgba(var(--rgb-accent),.40);
    border-color: rgba(var(--rgb-accent),.45);
    border-style: solid;
}
a:not([class]) { color: var(--color-primary); transition: var(--transition); text-decoration-color: rgba(var(--rgb-accent),.55); }

/* ========== 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); background-image: linear-gradient(180deg, rgba(237,233,254,.55) 0%, rgba(255,255,255,.30) 55%, rgba(252,231,243,.35) 100%); border-radius: var(--radius-xl); }
                .news-grid .card { display: grid; grid-template-columns: 280px 1fr; }

/* features: horizontal */
/* 水平滚动 */
                .feature-list { display: flex; gap: var(--space-gap); overflow-x: auto; scroll-snap-type: x mandatory; border-radius: var(--radius-xl); background-image: linear-gradient(115deg, rgba(224,231,255,.60) 0%, rgba(237,233,254,.42) 48%, rgba(252,231,243,.50) 100%); scrollbar-color: var(--color-primary) rgba(var(--rgb-primary),.14); }
                .feature-list > * { flex: 0 0 300px; scroll-snap-align: start; }

/* hero: split */
/* 左文右图 */
                .hero-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; align-items: center; border-radius: var(--radius-xl); background-image: linear-gradient(138deg, rgba(255,255,255,.70) 0%, rgba(237,233,254,.55) 44%, rgba(255,228,230,.48) 100%); }

/* testimonials: grid-3 */
.testimonial-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }

/* partners: grid-4 */
.partner-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: calc(var(--space-gap) * 1.5); align-items: center; filter: saturate(1.06); }

/* faq: with-sidebar */
/* FAQ 左 + 联系信息右 */
                .faq-wrapper { display: grid; grid-template-columns: 2fr 1fr; gap: 2rem; border-radius: var(--radius-xl); background-image: linear-gradient(200deg, rgba(238,242,255,.55) 0%, rgba(255,255,255,.25) 50%, rgba(237,233,254,.50) 100%); }

/* 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; color: transparent; background-color: var(--color-primary); background-image: linear-gradient(122deg, #312e81 0%, #4338ca 30%, #7c3aed 58%, #e11d48 100%); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; text-shadow: 0 6px 22px rgba(var(--rgb-primary),.28); }

/* cta: split */
.cta-inner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 2rem; border-radius: var(--radius-xl); background-image: linear-gradient(120deg, rgba(237,233,254,.70) 0%, rgba(224,231,255,.50) 45%, rgba(255,228,230,.55) 100%); }

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

/* 条件性装饰 */
.card:hover, [class*="card"]:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg), inset 0 0 0 1px rgba(var(--rgb-accent),.28); filter: saturate(1.08) brightness(1.02); }

/* 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; }
}