* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            background: #f4f7fc;
            color: #1e2f3b;
            line-height: 1.6;
            padding: 2rem 1rem;
        }
        .guide-container {
            max-width: 1000px;
            margin: 0 auto;
            background: white;
            border-radius: 2.8rem;
            box-shadow: 0 30px 45px -20px rgba(20, 50, 70, 0.25);
            overflow: hidden;
            padding: 2.8rem 3.2rem;
            border: 1px solid rgba(120, 150, 170, 0.15);
        }
        h1 {
            font-size: 2.8rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            line-height: 1.2;
            color: #153e54;
            border-left: 8px solid #4d8ba8;
            padding-left: 1.5rem;
            margin-bottom: 0.5rem;
        }
        .subhead {
            font-size: 1.3rem;
            color: #2a5772;
            margin-bottom: 2.5rem;
            font-weight: 400;
            border-bottom: 2px solid #d2e3ed;
            padding-bottom: 1.2rem;
        }
        h2 {
            font-size: 2.2rem;
            font-weight: 650;
            margin: 2.5rem 0 1.5rem 0;
            color: #1a4359;
            border-bottom: 3px solid #b8d2e3;
            padding-bottom: 0.4rem;
        }
        h3 {
            font-size: 1.5rem;
            font-weight: 600;
            margin: 1.5rem 0 1rem 0;
            color: #1f5975;
        }
        .occasion-card {
            background: #f9fcff;
            border-radius: 2rem;
            padding: 1.8rem 2.2rem;
            margin: 2rem 0;
            border: 1px solid #cde0ed;
            box-shadow: 0 6px 14px rgba(70, 130, 160, 0.05);
            transition: all 0.1s ease;
        }
        .occasion-card h3 {
            margin-top: 0;
            border-bottom: 1px dashed #a7c7dd;
            padding-bottom: 0.7rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            color: #1b6582;
        }
        .occasion-card ul {
            margin: 0.8rem 0 0.8rem 1.5rem;
        }
        .occasion-card li {
            margin-bottom: 0.4rem;
        }
        .tip-badge {
            background: #e2eff9;
            border-radius: 2rem;
            padding: 0.5rem 1.2rem;
            font-weight: 500;
            display: inline-block;
            margin: 0.6rem 0.2rem;
            font-size: 0.95rem;
            border: 1px solid #b4d0e3;
            color: #124f6b;
        }
        .pin-logic {
            background: #e6f0f5;
            border-left: 6px solid #327a9e;
            padding: 1.5rem 2rem;
            border-radius: 1.5rem;
            margin: 2rem 0;
        }
        .pin-logic p {
            font-weight: 500;
        }
        .grid-tips {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1rem;
            margin: 1.5rem 0;
        }
        .tip-item {
            background: #ecf5fa;
            padding: 1rem 1.2rem;
            border-radius: 2rem;
            font-weight: 500;
            color: #0a4a67;
            border: 1px solid #b9d6ed;
        }
        .faq-item {
            margin: 1.8rem 0;
            border-bottom: 1px solid #c2d7e8;
            padding-bottom: 1.4rem;
        }
        .faq-question {
            font-weight: 700;
            font-size: 1.2rem;
            color: #1d5775;
            margin-bottom: 0.4rem;
        }
        hr {
            border: none;
            border-top: 2px solid #d3e2ef;
            margin: 2.8rem 0 1.8rem;
        }
        .footer-note {
            text-align: center;
            color: #4d6f86;
            font-size: 0.95rem;
            margin-top: 2.5rem;
        }
        .cta-soft {
            background: #1d5f7e;
            color: white;
            padding: 0.8rem 2rem;
            border-radius: 3rem;
            display: inline-block;
            font-weight: 600;
            margin: 1rem 0 0.2rem;
            text-decoration: none;
            border: 1px solid #62b0d3;
            box-shadow: 0 6px 14px rgba(25, 90, 120, 0.3);
        }
        @media (max-width: 700px) {
            .guide-container { padding: 1.8rem; }
            h1 { font-size: 2.2rem; }
        }