* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            background: #f0f3f8;
        }
        .coin-article {
            max-width: 1000px;
            margin: 0 auto;
            background: white;
            border-radius: 2.8rem;
            box-shadow: 0 30px 45px -20px rgba(35, 55, 70, 0.3);
            overflow: hidden;
            padding: 2.8rem 3.2rem;
            border: 1px solid rgba(140, 110, 80, 0.15);
        }
        h1 {
            font-size: 2.8rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            line-height: 1.2;
            color: #1d3b4f;
            border-left: 8px solid #b57c4a; /* antique bronze */
            padding-left: 1.5rem;
            margin-bottom: 0.3rem;
        }
        .subtitle {
            font-size: 1.3rem;
            color: #345d76;
            margin-bottom: 2rem;
            font-weight: 400;
            border-bottom: 2px solid #dccfbf;
            padding-bottom: 1.2rem;
        }
        h2 {
            font-size: 2.2rem;
            font-weight: 650;
            margin: 2.5rem 0 1.5rem 0;
            color: #1d4057;
            border-bottom: 3px solid #ccb9a5;
            padding-bottom: 0.4rem;
        }
        h3 {
            font-size: 1.6rem;
            font-weight: 600;
            margin: 1.8rem 0 1rem 0;
            color: #25576f;
        }
        .meaning-card {
            background: #faf8f5;
            border-radius: 2rem;
            padding: 1.8rem 2.2rem;
            margin: 2rem 0;
            border: 1px solid #d9cdbe;
            box-shadow: 0 6px 14px rgba(100, 80, 60, 0.05);
        }
        .meaning-card h3 {
            margin-top: 0;
            border-bottom: 1px dashed #b9aa99;
            padding-bottom: 0.6rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            color: #2a5f6b;
        }
        ul {
            margin: 1rem 0 1rem 1.5rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        .premium-box {
            background: #e5edea;
            border-left: 6px solid #7d6b55;
            padding: 1.8rem 2.2rem;
            border-radius: 1.8rem;
            margin: 2.2rem 0;
        }
        .grid-tips {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1rem;
            margin: 1.5rem 0;
        }
        .tip-item {
            background: #ecf1e9;
            padding: 1rem 1.2rem;
            border-radius: 2rem;
            font-weight: 500;
            color: #1c4e5a;
            border: 1px solid #b7c9b5;
            text-align: center;
        }
        .faq-item {
            margin: 1.8rem 0;
            border-bottom: 1px solid #cfc1b2;
            padding-bottom: 1.4rem;
        }
        .faq-question {
            font-weight: 700;
            font-size: 1.2rem;
            color: #1b5570;
            margin-bottom: 0.4rem;
        }
        hr {
            border: none;
            border-top: 2px solid #d2c4b4;
            margin: 2.8rem 0 1.8rem;
        }
        .footer-note {
            text-align: center;
            color: #4f6f86;
            font-size: 0.95rem;
            margin-top: 2.5rem;
        }
        .cta-btn {
            background: #22607c;
            color: white;
            padding: 0.9rem 2.4rem;
            border-radius: 3rem;
            display: inline-block;
            font-weight: 600;
            font-size: 1.2rem;
            margin: 1rem 0 0.5rem;
            text-decoration: none;
            border: 1px solid #70b0cf;
            box-shadow: 0 8px 18px -6px #16445a;
        }
        @media (max-width: 700px) {
            .coin-article { padding: 1.8rem; }
            h1 { font-size: 2.2rem; }
        }