:root {
    --color-primary: #8a5a2b;
    --color-primary-dark: #6f4620;
    --color-accent: #87a878;
    --color-surface: #faf8f3;
    --color-text: #2d2d2d;
    --rgb-primary: 138,90,43;
    --rgb-accent: 135,168,120;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 18px;
    --radius-xl: 26px;
    --shadow-sm: 0 1px 10px rgba(45,45,45,.10), 0 0 0 1px rgba(138,90,43,.10);
    --shadow-md: 0 10px 28px rgba(45,45,45,.10), 0 2px 0 rgba(138,90,43,.10), 0 0 0 1px rgba(138,90,43,.10);
    --shadow-lg: 0 18px 52px rgba(45,45,45,.14), 0 6px 18px rgba(138,90,43,.12), 0 0 0 1px rgba(138,90,43,.14);
    --space-section: 2rem;
    --space-card: 1rem;
    --space-gap: 0.75rem;
    --transition: 0.5s cubic-bezier(.2,.8,.2,1);
    --heading-weight: 700;
    --body-line-height: 1.7;
}

/* 基础覆盖 */
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);
    padding: var(--space-card);
    transition: var(--transition);
    background:
        radial-gradient(1200px 420px at 12% -10%, rgba(135,168,120,.22), transparent 55%),
        radial-gradient(900px 360px at 88% 0%, rgba(138,90,43,.18), transparent 48%),
        linear-gradient(180deg, rgba(250,248,243,.98), rgba(250,248,243,.92));
    box-shadow:
        0 1px 0 rgba(255,255,255,.8) inset,
        0 16px 40px rgba(45,45,45,.12),
        0 8px 20px rgba(138,90,43,.12),
        0 0 0 1px rgba(138,90,43,.14);
}
.card::selection, [class*="card"]::selection { background: rgba(135,168,120,.35); color: var(--color-text); }
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition: var(--transition);
    box-shadow: 0 0 0 1px rgba(138,90,43,.18) inset, 0 10px 22px rgba(45,45,45,.10);
    filter: saturate(1.02);
}
a:not([class]) {
    color: var(--color-primary);
    transition: var(--transition);
    text-shadow: 0 1px 0 rgba(255,255,255,.7);
}

.card, [class*="card"], .btn, button[class*="btn"], a[class*="btn"] {
    caret-color: var(--color-accent);
    accent-color: var(--color-accent);
}

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

/* news: featured-top */
/* 首篇横跨全宽 */
                .news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }
                .news-grid > *:first-child { grid-column: span 3; }

/* features: grid-4 */
.feature-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-gap); }

/* hero: left-aligned */
.hero-content { text-align: left; max-width: 600px; }

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

/* partners: scroll */
/* 自动滚动 */
                .partner-grid { display: flex; gap: 2rem; overflow: hidden; animation: partnerScroll 20s linear infinite; }
                @keyframes partnerScroll { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

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

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

/* cta: full-bg */
.cta-section {
    background:
        radial-gradient(900px 380px at 12% 20%, rgba(135,168,120,.35), transparent 55%),
        radial-gradient(720px 340px at 88% 10%, rgba(250,248,243,.22), transparent 50%),
        linear-gradient(135deg, #8a5a2b, #6f4620 55%, #5b3a1c);
    color: #faf8f3;
    padding: 4rem 2rem;
    box-shadow: 0 18px 56px rgba(111,70,32,.28), 0 0 0 1px rgba(250,248,243,.10) inset;
}

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

/* 条件性装饰 */
a:not([class]):hover {
    color: var(--color-accent);
    text-shadow: 0 0 18px rgba(135,168,120,.30);
}
.hero, [class*="hero"], section:first-of-type {
    background:
        radial-gradient(900px 420px at 18% -10%, rgba(135,168,120,.35), transparent 55%),
        radial-gradient(820px 420px at 92% 0%, rgba(250,248,243,.30), transparent 50%),
        linear-gradient(140deg, rgba(138,90,43,.96), rgba(111,70,32,.92) 55%, rgba(45,45,45,.18));
}
.card { border-left: 3px solid var(--color-accent); }

header, .header, .navbar {
    background: transparent;
    box-shadow: none;
}

/* 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; }
}