/* roulang page: index */
:root {
            --color-primary: #1B4332;
            --color-primary-light: #2D6A4F;
            --color-accent: #52B788;
            --color-amber: #DDA15E;
            --color-dark: #081C15;
            --color-sand: #F4F1EA;
            --color-white: #F8F9FA;
            --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
        }
        * {
            box-sizing: border-box;
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-main);
            color: #2D312E;
            background-color: #F8F9FA;
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }
        .hero-pattern {
            background: linear-gradient(135deg, rgba(8, 28, 21, 0.94) 0%, rgba(27, 67, 50, 0.88) 100%), url('/assets/images/e0c55d0d1c13948b.png') center/cover no-repeat;
        }
        .deep-eco-bg {
            background: linear-gradient(180deg, #081C15 0%, #102B20 100%);
        }
        .transition-base {
            transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }
        details summary::-webkit-details-marker {
            display: none;
        }