:root {
    --color-primary: #4c1d95;
    --color-primary-dark: #2e1065;
    --color-accent: #f59e0b;
    --color-surface: #f5f3ff;
    --color-text: #191031;
    --rgb-primary: 76,29,149;
    --rgb-accent: 245,158,11;
    --radius-sm: 4px;
    --radius-md: 14px;
    --radius-lg: 22px;
    --radius-xl: 34px;
    --shadow-sm: 0 1px 2px rgba(var(--rgb-primary),.22), 0 4px 10px -3px rgba(124,58,237,.20);
    --shadow-md: 0 10px 26px -10px rgba(var(--rgb-primary),.34), 0 3px 8px -2px rgba(var(--rgb-accent),.16), inset 0 1px 0 rgba(255,255,255,.65);
    --shadow-lg: 0 26px 54px -18px rgba(46,16,101,.42), 0 10px 22px -8px rgba(168,85,247,.24);
    --space-section: 4rem;
    --space-card: 1.5rem;
    --space-gap: 1.25rem;
    --transition: 0.55s cubic-bezier(0.22, 1, 0.36, 1);
    --heading-weight: 700;
    --body-line-height: 1.75;
}

/* 基础覆盖 */
body {
    color: var(--color-text);
    line-height: var(--body-line-height);
    background: linear-gradient(165deg, #f7f5ff 0%, #ede9fe 38%, #e0e7ff 68%, #fef3c7 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) var(--radius-sm) var(--radius-lg) var(--radius-sm);
    box-shadow: var(--shadow-md);
    padding: var(--space-card);
    transition: var(--transition);
    background: linear-gradient(155deg, #ffffff 0%, #f5f3ff 48%, #ede9fe 82%, #e0e7ff 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);
    background: linear-gradient(135deg, #2e1065 0%, #4c1d95 32%, #6d28d9 64%, #a855f7 100%);
    color: #fef3c7;
    box-shadow: 0 10px 24px -10px rgba(76,29,149,.62), 0 2px 6px rgba(245,158,11,.22);
}
a:not([class]) { color: var(--color-primary); transition: var(--transition); }

/* ========== 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);
                    background: linear-gradient(145deg, #ecfdf5 0%, #d1fae5 45%, #a7f3d0 100%);
                    border-radius: var(--radius-xl) var(--radius-sm) var(--radius-xl) var(--radius-sm);
                    box-shadow: 0 16px 34px -20px rgba(6,95,70,.48), inset 0 0 0 1px rgba(16,185,129,.18);
                }

/* features: grid-2 */
.feature-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: calc(var(--space-gap) * 1.5);
    background: linear-gradient(150deg, #fffbeb 0%, #fef3c7 42%, #fde68a 78%, #fcd34d 100%);
    border-radius: var(--radius-sm) var(--radius-xl) var(--radius-sm) var(--radius-xl);
    box-shadow: 0 18px 38px -22px rgba(180,83,9,.45), inset 0 0 0 1px rgba(245,158,11,.22);
}

/* hero: centered */
.hero-content { text-align: center; max-width: 800px; margin: 0 auto; }

/* testimonials: stacked */
/* 垂直堆叠 */
                .testimonial-list {
                    display: flex;
                    flex-direction: column;
                    gap: var(--space-gap);
                    max-width: 720px;
                    margin: 0 auto;
                    background: linear-gradient(180deg, #faf5ff 0%, #ede9fe 55%, #ddd6fe 100%);
                    border-radius: var(--radius-xl) var(--radius-xl) var(--radius-sm) var(--radius-sm);
                    box-shadow: 0 20px 42px -24px rgba(91,33,182,.42), inset 0 0 0 1px rgba(139,92,246,.20);
                }

/* partners: grid-6 */
.partner-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--space-gap);
    align-items: center;
    background: linear-gradient(120deg, #eef2ff 0%, #e0e7ff 40%, #c7d2fe 72%, #a5b4fc 100%);
    border-radius: var(--radius-lg) var(--radius-sm) var(--radius-lg) var(--radius-sm);
    box-shadow: 0 14px 30px -18px rgba(49,46,129,.42), inset 0 0 0 1px rgba(99,102,241,.20);
}

/* faq: with-sidebar */
/* FAQ 左 + 联系信息右 */
                .faq-wrapper {
                    display: grid;
                    grid-template-columns: 2fr 1fr;
                    gap: 2rem;
                    background: linear-gradient(200deg, #fff7ed 0%, #ffedd5 46%, #fed7aa 100%);
                    border-radius: var(--radius-sm) var(--radius-lg) var(--radius-sm) var(--radius-lg);
                    box-shadow: 0 18px 40px -24px rgba(154,52,18,.40), inset 0 0 0 1px rgba(251,146,60,.22);
                }

/* stats: grid-3 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-gap);
    text-align: center;
    background: linear-gradient(135deg, #4c1d95 0%, #6d28d9 30%, #8b5cf6 62%, #c4b5fd 100%);
    border-radius: var(--radius-xl) var(--radius-sm) var(--radius-xl) var(--radius-sm);
    box-shadow: 0 24px 50px -22px rgba(46,16,101,.58), inset 0 0 0 1px rgba(196,181,253,.35);
}

/* cta: card-style */
.cta-inner {
    background: linear-gradient(140deg, #fef3c7 0%, #fde68a 22%, #fbcfe8 58%, #ddd6fe 88%, #c4b5fd 100%);
    border-radius: var(--radius-xl);
    padding: 3rem;
    text-align: center;
    box-shadow: var(--shadow-lg), inset 0 1px 0 rgba(255,255,255,.7);
    border-color: rgba(245,158,11,.35);
    border-style: solid;
}

/* Page Layout: narrow-centered */
/* 窄版居中 */
            .page-main {
                max-width: 860px;
                margin: 0 auto;
                background: linear-gradient(180deg, rgba(255,255,255,.85) 0%, rgba(245,243,255,.92) 55%, rgba(237,233,254,.95) 100%);
                border-radius: var(--radius-xl) var(--radius-sm) var(--radius-xl) var(--radius-sm);
                box-shadow: 0 28px 60px -30px rgba(76,29,149,.38), inset 0 0 0 1px rgba(124,58,237,.12);
            }

/* 条件性装饰 */
a:not([class]):hover { color: var(--color-accent); }
.hero, [class*="hero"], section:first-of-type {
    background: linear-gradient(125deg, #fef3c7 0%, #fde68a 16%, #e9d5ff 42%, #a78bfa 64%, #6d28d9 84%, #2e1065 100%);
    box-shadow: inset 0 -18px 46px -20px rgba(46,16,101,.35), inset 0 1px 0 rgba(255,255,255,.5);
}

/* 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; }
}