* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: Arial, sans-serif;
        }

        body {
            background: #f8fafc;
            color: #0f172a;
            line-height: 1.8;
        }

        header,
        footer {
            background: #020617;
            color: white;
            padding: 30px 8%;
            text-align: center;
        }

        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        header h2 {
            color: #4ade80;
        }

        nav a,
        footer a {
            color: white;
            text-decoration: none;
            margin-left: 18px;
        }

        .hero {
            padding: 80px 20px;
            text-align: center;
            background: linear-gradient(135deg, #2563eb, #22c55e);
            color: white;
        }

        .hero h1 {
            font-size: 52px;
            margin-bottom: 15px;
        }

        .container {
            max-width: 1000px;
            margin: 60px auto;
            padding: 40px;
            background: white;
            border-radius: 24px;
            box-shadow: 0 15px 40px rgba(15, 23, 42, 0.08);
        }

        h2 {
            margin-top: 35px;
            color: #2563eb;
        }

        p,
        li {
            color: #475569;
            font-size: 16px;
        }

        ul {
            padding-left: 22px;
        }

        .notice {
            background: #eff6ff;
            border-left: 5px solid #2563eb;
            padding: 20px;
            border-radius: 14px;
            margin-bottom: 30px;
        }

        .warning {
            background: #fff7ed;
            border-left: 5px solid #f59e0b;
            padding: 20px;
            border-radius: 14px;
            margin: 30px 0;
        }

        @media(max-width: 700px) {
            header {
                flex-direction: column;
                gap: 15px;
            }

            nav a {
                margin: 8px;
            }

            .hero h1 {
                font-size: 36px;
            }

            .container {
                margin: 25px 15px;
                padding: 25px;
            }
        }