/* CSS Root for High-End US Branding */
    :root {
        --lp-navy: #050a30;    /* Midnight Navy - Authority */
        --lp-gold: #c5a021;    /* Champagne Gold - Luxury */
        --lp-text: #1a1a1a;    /* Pure Black Body */
        --lp-muted: #666666;   /* Gray for Metadata */
        --lp-border: #e5e7eb;  /* Subtle Dividers */
    }

    .lp-article-wrapper {
        font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
        line-height: 1.8;
        color: var(--lp-text);
        max-width: 1920px;
        margin: 0 auto;
        padding: 60px 20px;
        background-color: #ffffff;
        text-align: left; /* 严格左对齐符合美式编辑风格 */
    }

    /* Typography - Serif for Premium Headings */
    h1, h2, h3 {
        font-family: 'Georgia', 'Playfair Display', serif;
        color: var(--lp-navy);
        font-weight: 400;
        text-align: left;
        margin: 0;
    }

    h1 {
        font-size: 2.8rem;
        line-height: 1.1;
        margin-bottom: 40px;
        letter-spacing: -0.01em;
        border-bottom: 1px solid var(--lp-border);
        padding-bottom: 40px;
    }

    h2 {
        font-size: 2rem;
        margin-top: 80px;
        margin-bottom: 30px;
    }

    h3 {
        font-size: 1.5rem;
        color: var(--lp-gold);
        margin-top: 50px;
        margin-bottom: 20px;
    }

    p { margin-bottom: 30px; font-size: 1.1rem; }

    /* Meta Strip - Styled like an Invitation */
    .lp-meta-strip {
        display: flex;
        flex-wrap: wrap;
        gap: 40px;
        margin: 40px 0 60px;
        padding: 20px 0;
        border-top: 1px solid var(--lp-border);
        border-bottom: 1px solid var(--lp-border);
        text-transform: uppercase;
        font-size: 0.85rem;
        letter-spacing: 1.5px;
    }

    .lp-meta-strip span b { color: var(--lp-gold); margin-right: 8px; }

    /* Feature Highlight Boxes */
    .lp-clinical-highlight {
        background: #fdfdfd;
        border-left: 2px solid var(--lp-gold);
        padding: 30px;
        margin: 40px 0;
    }

    .lp-clinical-highlight strong {
        color: var(--lp-navy);
        display: block;
        margin-bottom: 10px;
        font-family: 'Georgia', serif;
        font-size: 1.2rem;
    }

    /* Image Placeholders */
    .lp-img-container {
        margin: 60px 0;
        text-align: left;
    }

    .lp-img-container img {
        max-width: 100%;
        height: auto;
        display: block;
        box-shadow: 0 5px 25px rgba(0,0,0,0.05);
    }

    .lp-img-caption {
        display: block;
        font-size: 0.8rem;
        color: var(--lp-muted);
        margin-top: 15px;
        letter-spacing: 0.5px;
        text-transform: uppercase;
        font-style: italic;
    }

    /* List for Ecosystem Section */
    .lp-eco-list {
        padding-left: 20px;
        margin-bottom: 40px;
    }

    .lp-eco-list li {
        margin-bottom: 15px;
        list-style-type: none;
        position: relative;
    }

    .lp-eco-list li::before {
        content: "—";
        position: absolute;
        left: -25px;
        color: var(--lp-gold);
    }

    /* --- CTA / Footer Section --- */
    .lp-footer-cta {
        margin-top: 100px;
        padding-top: 60px;
        border-top: 2px solid var(--lp-navy);
    }

    .lp-btn-primary {
        background-color: var(--lp-navy);
        color: #ffffff;
        padding: 20px 60px;
        text-decoration: none;
        font-size: 1rem;
        font-weight: bold;
        display: inline-block;
        transition: all 0.3s ease;
        text-transform: uppercase;
        letter-spacing: 2px;
        margin-top: 40px;
    }

    .lp-btn-primary:hover {
        background-color: var(--lp-gold);
        transform: translateY(-2px);
    }

    @media (max-width: 768px) {
        h1 { font-size: 2rem; }
        .lp-meta-strip { flex-direction: column; gap: 15px; }
        .lp-article-wrapper { padding: 40px 15px; }
    }