/* roulang page: index */
:root {
            --primary: #FF6B35;
            --secondary: #1E1E1E;
            --bg: #FDF8F5;
            --accent: #C5E86C;
            --white: #FFFFFF;
            --text: #333333;
            --text-light: #666666;
            --border: #E5E0DC;
            --radius: 8px;
            --shadow: 0 4px 20px rgba(0,0,0,0.04);
            --shadow-hover: 0 12px 32px rgba(0,0,0,0.08);
            --font-cn: 'Noto Sans SC', sans-serif;
            --font-en: 'Montserrat', sans-serif;
            --nav-height: 72px;
            --section-padding: 100px;
        }

        *, ::before, ::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-cn);
            color: var(--text);
            background-color: var(--bg);
            line-height: 1.7;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.25s ease;
        }

        button, input, textarea {
            font-family: var(--font-cn);
            border: none;
            outline: none;
            font-size: 1rem;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0,0,0,0);
            border: 0;
        }

        body::before {
            content: '';
            display: none;
        }