:root {
    --color-primary: #c47b5a;
    --color-primary-dark: #9a5a3e;
    --color-accent: #87a878;
    --color-surface: #faf8f3;
    --color-text: #2d2d2d;
    --rgb-primary: 196,123,90;
    --rgb-accent: 135,168,120;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --shadow-sm: 0 2px 8px rgba(196,123,90,0.08), 0 0 12px rgba(196,123,90,0.05);
    --shadow-md: 0 4px 16px rgba(196,123,90,0.12), 0 0 24px rgba(135,168,120,0.08);
    --shadow-lg: 0 8px 24px rgba(196,123,90,0.18), 0 0 32px rgba(135,168,120,0.12);
    --space-section: 2rem;
    --space-card: 1rem;
    --space-gap: 0.75rem;
    --transition: 0.4s cubic-bezier(0.25, 0.8, 0.35, 1);
    --heading-weight: 800;
    --body-line-height: 1.75;
}

body { background: var(--color-surface); color: var(--color-text); line-height: var(--body-line-height); }
h1, h2, h3, h4 { color: var(--color-primary-dark); font-weight: var(--heading-weight); }
section, .section { padding-top: var(--space-section); padding-bottom: var(--space-section); background: linear-gradient(180deg, rgba(250,248,243,0.5) 0%, rgba(250,248,243,0.9) 100%); }
.card, [class*="card"] { background: #ffffff; border-radius: var(--radius-lg); box-shadow: var(--shadow-md); padding: var(--space-card); transition: var(--transition); border: 1px solid rgba(196,123,90,0.1); }
.btn, button[class*="btn"], a[class*="btn"] { background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%); color: #ffffff; border-radius: var(--radius-md); box-shadow: 0 4px 12px rgba(196,123,90,0.3); transition: var(--transition); }
a:not([class]) { color: var(--color-primary); text-decoration-color: rgba(196,123,90,0.4); transition: var(--transition); }

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

/* news: masonry-2 */
.news-grid { column-count: 2; column-gap: var(--space-gap); }
.news-grid .card { break-inside: avoid; margin-bottom: var(--space-gap); border-radius: var(--radius-lg); }

/* features: grid-3 */
.feature-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }
.feature-list .card { border-top: 3px solid var(--color-accent); }

/* hero: left-aligned */
.hero-content { text-align: left; max-width: 600px; }
.hero-content h1 { text-shadow: 0 2px 12px rgba(196,123,90,0.2); }

/* testimonials: grid-3 */
.testimonial-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }
.testimonial-list .card { background: linear-gradient(145deg, #ffffff 0%, #faf8f3 100%); }

/* partners: grid-6 */
.partner-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: var(--space-gap); align-items: center; }
.partner-grid img { filter: grayscale(100%); opacity: 0.7; transition: var(--transition); }

/* faq: with-sidebar */
.faq-wrapper { display: grid; grid-template-columns: 2fr 1fr; gap: 2rem; }
.faq-wrapper .card { border-left: 4px solid var(--color-accent); }

/* stats: big-number */
.stats-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 2rem; }
.stats-grid .stat-value { font-size: 3rem; color: var(--color-primary); text-shadow: 0 0 16px rgba(196,123,90,0.3); }

/* cta: split */
.cta-inner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 2rem; }
.cta-inner { background: linear-gradient(135deg, rgba(196,123,90,0.1) 0%, rgba(135,168,120,0.1) 100%); border-radius: var(--radius-xl); padding: 2rem; }

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

/* 条件性装饰 */
.card:hover, [class*="card"]:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg), 0 0 32px rgba(135,168,120,0.2); border-color: var(--color-accent); }
a:not([class]):hover { color: var(--color-accent); text-shadow: 0 0 8px rgba(135,168,120,0.4); }
header, .header, .navbar { background: rgba(250,248,243,0.8); backdrop-filter: blur(8px); }
.btn:hover, button[class*="btn"]:hover, a[class*="btn"]:hover { box-shadow: 0 6px 20px rgba(196,123,90,0.4), 0 0 32px rgba(135,168,120,0.3); transform: translateY(-2px); }
.partner-grid img:hover { filter: grayscale(0%); opacity: 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; }
}