:root {
    --color-primary: #6b705c;
    --color-primary-dark: #26231f;
    --color-accent: #c44536;
    --color-surface: #f5f1e8;
    --color-text: #1a1a1a;
    --rgb-primary: 107,112,92;
    --rgb-accent: 196,69,54;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 16px;
    --shadow-sm: 0 1px 0 rgba(26,26,26,.08), 0 10px 22px rgba(196,69,54,.10);
    --shadow-md: 0 10px 26px rgba(26,26,26,.12), 0 0 0 1px rgba(26,26,26,.06), 0 0 22px rgba(196,69,54,.18);
    --shadow-lg: 0 22px 55px rgba(26,26,26,.16), 0 0 0 1px rgba(26,26,26,.08), 0 0 36px rgba(196,69,54,.22);
    --space-section: 3rem;
    --space-card: 1.25rem;
    --space-gap: 1rem;
    --transition: 380ms cubic-bezier(0.16, 1, 0.3, 1);
    --heading-weight: 600;
    --body-line-height: 1.75;
    --shadow-glow: 0 0 24px rgba(var(--rgb-accent), .40);
    --shadow-halo: 0 0 32px rgba(var(--rgb-accent), .60);
    --ease-pop: cubic-bezier(0.2, 0.9, 0.2, 1);
}

body { color: var(--color-text); line-height: var(--body-line-height); background: var(--color-surface); }
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:
        0 1px 0 rgba(26,26,26,.10),
        0 12px 30px rgba(26,26,26,.14),
        0 0 0 1px rgba(26,26,26,.06),
        0 0 22px rgba(196,69,54,.16);
    padding: var(--space-card);
    transition:
        box-shadow 420ms var(--ease-pop),
        transform 420ms var(--ease-pop),
        background-color 420ms var(--ease-pop),
        border-color 420ms var(--ease-pop),
        filter 420ms var(--ease-pop);
    background: rgba(245,241,232,.75);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
}
.btn, button[class*="btn"], a[class*="btn"] {
    border-radius: var(--radius-md);
    transition:
        box-shadow 420ms var(--ease-pop),
        transform 420ms var(--ease-pop),
        background-color 420ms var(--ease-pop),
        color 420ms var(--ease-pop),
        border-color 420ms var(--ease-pop);
    outline-color: rgba(196,69,54,.55);
}
a:not([class]) { color: var(--color-primary); transition: var(--transition); }
a:not([class]):hover {
    color: var(--color-accent);
    text-shadow: 0 0 18px rgba(196,69,54,.28);
}

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

/* news: grid-3 */
/* 三列等宽网格 */
                .news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-gap); }

/* features: horizontal */
/* 水平滚动 */
                .feature-list { display: flex; gap: var(--space-gap); overflow-x: auto; scroll-snap-type: x mandatory; padding-bottom: .25rem; }
                .feature-list > * { flex: 0 0 300px; scroll-snap-align: start; }

/* hero: centered */
.hero-content { text-align: center; max-width: 800px; margin: 0 auto; }

/* testimonials: masonry */
.testimonial-list { column-count: 2; column-gap: var(--space-gap); }
                .testimonial-list > * { break-inside: avoid; margin-bottom: var(--space-gap); }

/* 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: inline */
/* 水平排列 */
                .stats-grid { display: flex; justify-content: center; gap: 3rem; }

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

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

/* 条件性装饰 */
.hero, [class*="hero"], section:first-of-type {
    background:
        radial-gradient(1200px 480px at 18% 8%, rgba(196,69,54,.26), rgba(196,69,54,0) 55%),
        radial-gradient(900px 420px at 92% 28%, rgba(107,112,92,.20), rgba(107,112,92,0) 58%),
        linear-gradient(135deg, #f5f1e8 0%, #f2e9d8 35%, #1a1a1a 100%);
    color: rgba(26,26,26,.95);
    border-radius: 18px;
}

/* 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; --radius-md: 10px; --radius-lg: 14px; }
    .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; }
}

@keyframes variantGlowPulse {
    0% { box-shadow: 0 12px 30px rgba(26,26,26,.14), 0 0 0 1px rgba(26,26,26,.06), 0 0 22px rgba(196,69,54,.16); }
    50% { box-shadow: 0 14px 34px rgba(26,26,26,.16), 0 0 0 1px rgba(196,69,54,.10), 0 0 28px rgba(196,69,54,.26); }
    100% { box-shadow: 0 12px 30px rgba(26,26,26,.14), 0 0 0 1px rgba(26,26,26,.06), 0 0 22px rgba(196,69,54,.16); }
}

.card:hover, [class*="card"]:hover {
    box-shadow:
        0 16px 42px rgba(26,26,26,.18),
        0 0 0 1px rgba(196,69,54,.14),
        0 0 24px rgba(196,69,54,.34),
        0 0 32px rgba(196,69,54,.42);
    filter: saturate(1.02) contrast(1.02);
    animation: variantGlowPulse 1.05s var(--ease-pop) both;
}