:root {
    --color-primary: #ff3d6e;
    --color-primary-dark: #b10f3a;
    --color-accent: #2dd4bf;
    --color-surface: #f7fbff;
    --color-text: #18222f;
    --rgb-primary: 255,61,110;
    --rgb-accent: 45,212,191;
    --radius-sm: 14px;
    --radius-md: 18px;
    --radius-lg: 24px;
    --radius-xl: 28px;
    --shadow-sm: 0 10px 24px rgba(var(--rgb-primary), .10), 0 1px 0 rgba(24,34,47,.06);
    --shadow-md: 0 18px 48px rgba(var(--rgb-primary), .12), 0 2px 0 rgba(24,34,47,.06), 0 0 0 1px rgba(45,212,191,.10) inset;
    --shadow-lg: 0 26px 74px rgba(var(--rgb-primary), .14), 0 10px 30px rgba(24,34,47,.08), 0 0 0 1px rgba(24,34,47,.06) inset;
    --space-section: 3rem;
    --space-card: 1.25rem;
    --space-gap: 1rem;
    --transition: 520ms cubic-bezier(0.16, 1, 0.3, 1);
    --heading-weight: 700;
    --body-line-height: 1.6;
    --shadow-soft: 0 22px 60px rgba(20, 28, 40, .10);
    --shadow-glow: 0 0 0 1px rgba(45,212,191,.18) inset, 0 16px 40px rgba(var(--rgb-accent), .10);
}

/* 基础覆盖 */
body { color: var(--color-text); line-height: var(--body-line-height); background: radial-gradient(1200px 600px at 10% -10%, rgba(var(--rgb-accent), .18), transparent 60%), radial-gradient(900px 500px at 100% 0%, rgba(var(--rgb-primary), .12), transparent 55%), var(--color-surface); }
h1, h2, h3, h4 { font-weight: var(--heading-weight); text-shadow: 0 1px 0 rgba(255,255,255,.55); }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); }
.card, [class*="card"] {
    border-radius: var(--radius-lg);
    box-shadow: 0 22px 60px rgba(16, 22, 30, .12), 0 2px 0 rgba(255,255,255,.75) inset, 0 0 0 1px rgba(45,212,191,.14) inset, 0 18px 52px rgba(var(--rgb-primary), .10);
    padding: var(--space-card);
    transition: var(--transition);
    background: linear-gradient(180deg, rgba(255,255,255,.86), rgba(255,255,255,.72));
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: var(--transition);
    box-shadow: 0 14px 40px rgba(var(--rgb-primary), .14), 0 2px 0 rgba(255,255,255,.7) inset, 0 0 0 1px rgba(45,212,191,.14) inset;
    background-image: linear-gradient(135deg, rgba(var(--rgb-primary), .95), rgba(var(--rgb-accent), .90));
}
a:not([class]) {
    color: var(--color-primary);
    transition: var(--transition);
    text-shadow: 0 0 0 rgba(0,0,0,0), 0 10px 30px rgba(var(--rgb-primary), .18);
}

/* ========== 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); }
.feature-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }
.hero-content { text-align: center; max-width: 800px; margin: 0 auto; }
.testimonial-list { column-count: 2; column-gap: var(--space-gap); }
                .testimonial-list > * { break-inside: avoid; margin-bottom: var(--space-gap); }
.partner-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: calc(var(--space-gap) * 1.5); align-items: center; }
.faq-list { max-width: 800px; margin: 0 auto; }

/* stats: inline */
/* 水平排列 */
                .stats-grid { display: flex; justify-content: center; gap: 3rem; }
.cta-inner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 2rem; }

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

/* 条件性装饰 */
.card { border-left: 3px solid transparent; border-image: linear-gradient(180deg, rgba(var(--rgb-accent), .95), rgba(var(--rgb-primary), .95)); border-image-slice: 1; }

/* 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; }
}