:root {
    --color-primary: #e63946;
    --color-primary-dark: #1d3557;
    --color-accent: #f77f00;
    --color-surface: #f3ede4;
    --color-text: #24243e;
    --rgb-primary: 230,57,70;
    --rgb-accent: 247,127,0;
    --radius-sm: 1px;
    --radius-md: 2px;
    --radius-lg: 4px;
    --radius-xl: 4px;
    --shadow-sm: 2px 2px 0 0 #1d3557;
    --shadow-md: 4px 4px 0 0 #1d3557;
    --shadow-lg: 6px 6px 0 0 #1d3557, 12px 12px 0 -6px #f77f00;
    --space-section: 2.25rem;
    --space-card: 1.15rem;
    --space-gap: 0.9rem;
    --transition: 0.15s cubic-bezier(0, 0.75, 0.25, 1);
    --heading-weight: 800;
    --body-line-height: 1.7;
}

body {
    color: var(--color-text);
    background-color: var(--color-surface);
    line-height: var(--body-line-height);
}

h1, h2, h3, h4 { font-weight: var(--heading-weight); }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); }
.card, [class*="card"] {
    color: var(--color-text);
    background-color: #fffdf8;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    outline: 2px solid var(--color-primary-dark);
    padding: var(--space-card);
    transition: var(--transition);
}
.btn, button[class*="btn"], a[class*="btn"] {
    color: #fffdf8;
    background-color: var(--color-primary);
    border-radius: var(--radius-md);
    box-shadow: 3px 3px 0 0 var(--color-primary-dark), inset 0 0 0 2px var(--color-primary-dark);
    transition: var(--transition);
}
a:not([class]) { color: var(--color-primary); transition: var(--transition); }

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

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

/* features: horizontal */
.feature-list { display: flex; gap: var(--space-gap); overflow-x: auto; scroll-snap-type: x mandatory; }
.feature-list > * { flex: 0 0 300px; scroll-snap-align: start; }

/* hero: minimal */
.hero { padding: 2rem 0; } .hero-content { max-width: 560px; }

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

/* partners: centered */
.partner-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 1.75rem; }

/* faq: two-column */
.faq-list { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-gap); }

/* stats: big-number */
.stats-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 1.75rem; }
.stats-grid .stat-value { font-size: 3rem; color: var(--color-primary-dark); }

/* cta: card-style */
.cta-inner {
    color: var(--color-primary-dark);
    background: #ffd166;
    border-radius: var(--radius-xl);
    box-shadow: 4px 4px 0 0 var(--color-primary-dark);
    padding: 3rem;
    text-align: center;
}

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

/* 条件性装饰 */
a:not([class]):hover { color: var(--color-accent); }
.hero, [class*="hero"], section:first-of-type {
    background: linear-gradient(135deg, #e63946, #1d3557 105%);
    color: #fffdf8;
}
.card { border-left: 3px solid var(--color-primary); }
header, .header, .navbar {
    background-color: var(--color-surface);
    box-shadow: 0 3px 0 0 var(--color-primary);
}

/* 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: 0.95rem;
        --space-gap: 0.8rem;
    }
    .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; }
}