/* roulang page: index */
:root {
            --primary-deep-green: #0B3D2E;
            --accent-warm-gold: #C49A2B;
            --accent-warm-gold-hover: #A8811F;
            --bg-warm-white: #F5F3EE;
            --card-white: #FFFFFF;
            --text-dark: #1a1a1a;
            --text-body: #3a3a3a;
            --text-muted: #6a6a6a;
            --text-inverse: #FFFFFF;
            --border-light: #e8e6e1;
            --shadow-sm: 0 4px 24px rgba(0,0,0,0.04);
            --shadow-md: 0 8px 32px rgba(0,0,0,0.08);
            --radius-xl: 16px;
            --radius-pill: 48px;
            --font-heading: 2.5rem;
            --font-subheading: 2rem;
        }

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

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
            background-color: var(--bg-warm-white);
            color: var(--text-dark);
            line-height: 1.76;
            overflow-x: hidden;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            cursor: pointer;
        }

        button, .btn {
            border: none;
            cursor: pointer;
            font-family: inherit;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 16px 40px;
            font-size: 1rem;
            font-weight: 700;
            border-radius: var(--radius-pill);
            transition: all 0.28s ease;
            outline: none;
            text-decoration: none;
        }

        .btn-primary {
            background: var(--accent-warm-gold);
            color: var(--text-inverse);
            padding: 18px 48px;
            box-shadow: 0 8px 24px rgba(196,154,43,0.35);
        }
        .btn-primary:hover {
            background: var(--accent-warm-gold-hover);
            box-shadow: 0 12px 28px rgba(162,136,38,0.45);
            transform: translateY(-3px);
        }
        .btn-outline {
            background: transparent;
            border: 2px solid var(--accent-warm-gold);
            color: var(--primary-deep-green);
            font-weight: 600;
            padding: 14px 32px;
        }
        .btn-outline:hover {
            background: rgba(196,154,43,0.08);
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 12px 26px;
            font-size: 0.9rem;
        }

        .nav-link {
            text-decoration: none;
            color: var(--primary-deep-green);
            font-weight: 500;
            display: inline-block;
            padding: 8px 2px;
            position: relative;
            font-size: 0.98rem;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-warm-gold);
            transition: width 0.28s ease;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--accent-warm-gold);
        }
        .nav-link:hover::after, .nav-link.active::after {
            width: 100%;
        }

        .card-*-hover, .card-hover {
            background: var(--card-white);
            backdrop-filter: blur(0.7px);
            border-radius: var(--radius-xl);
            transition: transform 0.25s ease, box-shadow 0.3s ease;
            display: flex;
            flex-direction: column;
        }
        .card-hover:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
        }

        .cta-section-gradient {
            background: linear-gradient(135deg, #1b5a46 0%, var(--primary-deep-green) 80%);
        }

        .fade-in-text {
            opacity: 0.95;
        }

        /* Hantington heroes */
        .h160px-represent {
            object-fit: cover;
            height: 220px;
            border-radius: 20px 20px 0 0;
            width: 100%;
        }

        @media (max-width: 768px) {
            html {
                font-size: 15px;
            }
        }