:root {
    --color-primary: #c44536;
    --color-primary-dark: #9f2d21;
    --color-accent: #d65c48;
    --color-surface: #f5f1e8;
    --color-text: #1a1a1a;
    --rgb-primary: 196,69,54;
    --rgb-accent: 214,92,72;
    --radius-sm: 3px;
    --radius-md: 6px;
    --radius-lg: 12px;
    --radius-xl: 18px;
    --shadow-sm: 0 1px 2px rgba(26,26,26,.06), 0 1px 1px rgba(26,26,26,.04);
    --shadow-md: 0 2px 4px rgba(26,26,26,.05), 0 6px 16px rgba(196,69,54,.05), 0 1px 2px rgba(26,26,26,.04);
    --shadow-lg: 0 2px 6px rgba(26,26,26,.06), 0 10px 24px rgba(196,69,54,.08), 0 16px 36px rgba(26,26,26,.06);
    --space-section: 2.25rem;
    --space-card: 1.125rem;
    --space-gap: 0.875rem;
    --transition: 0.45s cubic-bezier(0.22, 1, 0.36, 1);
    --heading-weight: 600;
    --body-line-height: 1.7;
}

body {
    color: var(--color-text);
    line-height: var(--body-line-height);
    background: linear-gradient(150deg, #f8f4eb 0%, #f5f1e8 48%, #eee5d5 100%);
    text-shadow: 0 1px 0 rgba(255,255,255,.3);
}

h1, h2, h3, h4 {
    font-weight: var(--heading-weight);
    color: #1a1a1a;
    text-shadow: 0 1px 0 rgba(255,255,255,.5), 0 2px 6px rgba(26,26,26,.06);
}

section, .section {
    padding-top: var(--space-section);
    padding-bottom: var(--space-section);
    background: linear-gradient(180deg, rgba(255,255,255,.22) 0%, rgba(245,241,232,0) 72%);
}

.card, [class*="card"] {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--space-card);
    transition: var(--transition);
    background: linear-gradient(145deg, rgba(255,255,255,.92), rgba(250,246,238,.96) 55%, rgba(239,230,215,.98));
}

.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: var(--transition);
    background: linear-gradient(135deg, #c44536, #a42e22);
    color: #fff8ef;
    box-shadow: 0 2px 6px rgba(196,69,54,.18), 0 4px 16px rgba(196,69,54,.12);
}

a:not([class]) {
    color: var(--color-primary);
    transition: var(--transition);
    text-decoration-color: rgba(196,69,54,.55);
    text-underline-offset: 3px;
}

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

/* news: list-view */
.news-grid { display: flex; flex-direction: column; gap: var(--space-gap); }
.news-grid .card { display: grid; grid-template-columns: 280px 1fr; }

/* 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; background: radial-gradient(circle at 78% 28%, rgba(196,69,54,.08), rgba(245,241,232,0) 56%); }
.hero-content { max-width: 560px; }

/* testimonials: carousel */
.testimonial-list { display: flex; overflow: hidden; }
.testimonial-list > * { flex: 0 0 100%; }

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

/* faq: single-column */
.faq-list { max-width: 800px; margin: 0 auto; }

/* stats: grid-4 */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); text-align: center; }

/* cta: split */
.cta-inner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 2rem; }

/* Page Layout: narrow-centered */
.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); background: linear-gradient(145deg, #fffdf8, #f5ecdd); border-left-color: #a12d20; }
a:not([class]):hover { color: var(--color-accent); text-decoration-color: rgba(196,69,54,.85); }
.card { border-left: 3px solid var(--color-primary); }
header, .header, .navbar { box-shadow: 0 1px 0 rgba(245,241,232,.8), 0 4px 16px rgba(26,26,26,.06), 0 8px 24px rgba(196,69,54,.03); background: linear-gradient(180deg, rgba(255,255,255,.85), rgba(245,241,232,.75)); 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: 2.125rem; --space-card: 1rem; --space-gap: 0.875rem; }
    .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; }
}