:root {
    --color-primary: #7c2d12;
    --color-primary-dark: #3b1706;
    --color-accent: #f97316;
    --color-surface: #fff7ed;
    --color-text: #1c0f06;
    --rgb-primary: 124,45,18;
    --rgb-accent: 249,115,22;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --shadow-sm: 0 3px 6px rgba(124,45,18,.1), 0 1px 3px rgba(0,0,0,.06);
    --shadow-md: 0 8px 20px rgba(124,45,18,.15), 0 4px 8px rgba(0,0,0,.08);
    --shadow-lg: 0 16px 40px rgba(124,45,18,.2), 0 8px 16px rgba(0,0,0,.1);
    --space-section: 3rem;
    --space-card: 1.25rem;
    --space-gap: 1rem;
    --transition: 0.5s cubic-bezier(.34,1.56,.64,1);
    --heading-weight: 700;
    --body-line-height: 1.65;
}

body { color: var(--color-text); 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"] { border-radius: var(--radius-lg); box-shadow: var(--shadow-md); padding: var(--space-card); transition: var(--transition); background: linear-gradient(145deg, #ffffff, #fff7ed); border: 1px solid rgba(124,45,18,.08); }
.btn, button[class*="btn"], a[class*="btn"] { border-radius: var(--radius-md); transition: var(--transition); background: linear-gradient(135deg, var(--color-primary), var(--color-accent)); color: #fff; border: none; box-shadow: 0 4px 12px rgba(124,45,18,.25); }
.btn:hover, button[class*="btn"]:hover, a[class*="btn"]:hover { box-shadow: 0 6px 20px rgba(124,45,18,.35); transform: translateY(-2px); }
a:not([class]) { color: var(--color-accent); transition: var(--transition); text-decoration-color: rgba(249,115,22,.3); }

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

/* news: grid-3 */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }
.news-grid > .card { background: linear-gradient(135deg, #ffffff, #fff7ed); border-left: 4px solid var(--color-accent); }

/* features: grid-3 */
.feature-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }
.feature-list > .card { background: linear-gradient(145deg, #fff7ed, #ffffff); border-top: 3px solid var(--color-primary); }

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

/* testimonials: masonry */
.testimonial-list { column-count: 2; column-gap: var(--space-gap); }
.testimonial-list > * { break-inside: avoid; margin-bottom: var(--space-gap); }
.testimonial-list .card { background: linear-gradient(160deg, #ffffff, #fef3c7); border-radius: var(--radius-xl); box-shadow: var(--shadow-md); }

/* partners: grid-4 */
.partner-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: calc(var(--space-gap) * 1.5); align-items: center; }
.partner-grid > * { background: linear-gradient(135deg, #fff7ed, #ffffff); border-radius: var(--radius-md); padding: 1rem; box-shadow: 0 2px 8px rgba(124,45,18,.08); }

/* faq: with-sidebar */
.faq-wrapper { display: grid; grid-template-columns: 2fr 1fr; gap: 2rem; }

/* stats: inline */
.stats-grid { display: flex; justify-content: center; gap: 3rem; }
.stats-grid > * { background: linear-gradient(145deg, var(--color-primary), #9a3412); color: #fff; padding: 1.5rem 2rem; border-radius: var(--radius-lg); box-shadow: var(--shadow-md); }

/* cta: card-style */
.cta-inner { background: linear-gradient(135deg, #fff7ed, #fef3c7); border-radius: var(--radius-xl); padding: 3rem; text-align: center; box-shadow: var(--shadow-lg); border: 1px solid rgba(124,45,18,.1); }

/* Page Layout: full-width */
.page-main { max-width: 1200px; margin: 0 auto; }

/* 条件性装饰 */
.card:hover, [class*="card"]:hover { transform: translateY(-6px) scale(1.01); box-shadow: var(--shadow-lg); }
.hero, [class*="hero"], section:first-of-type { background: linear-gradient(135deg, #7c2d12, #3b1706, #9a3412); }

/* 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; }
}