.sdtv-body {
        margin: 0;
        padding: 0;
        background-color: #0a0a0a;
        color: #e0e0e0;
        font-family: 'Courier New', monospace;
        font-size: clamp(14px, 1.8vw, 18px);
    }
    .sdtv-main {
        padding: 5vh 5vw;
        display: block;
        max-width: 1100px;
        margin: 0 auto;
    }
    .sdtv-header { margin-bottom: 4vh; }
    .sdtv-header h1 {
        font-size: clamp(28px, 6vw, 72px);
        margin: 0 0 2vh;
        text-transform: uppercase;
        letter-spacing: -0.15vw;
        line-height: 1.05;
        background: linear-gradient(180deg, #fff 0%, #888 100%);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }
    .sdtv-nav {
        margin-bottom: 5vh;
        border-bottom: 3px solid #333;
        padding-bottom: 2vh;
        display: flex;
        flex-wrap: wrap;
        gap: .5rem;
    }
    .sdtv-nav a {
        display: inline-block;
        color: #aaa;
        text-decoration: none;
        font-size: clamp(11px, 1.3vw, 15px);
        text-transform: uppercase;
        letter-spacing: .1em;
        padding: .4rem .8rem;
        border: 1px solid #333;
        transition: all .2s;
    }
    .sdtv-nav a:hover {
        color: #fff;
        border-color: #e74c3c;
        background: rgba(231,76,60,.1);
    }
    .sdtv-content h2 {
        font-size: clamp(20px, 3vw, 32px);
        text-transform: uppercase;
        margin: 4vh 0 2vh;
        color: #e74c3c;
        letter-spacing: .05em;
    }
    .sdtv-content blockquote {
        border-left: 4px solid #e74c3c;
        margin: 3vh 0;
        padding: 1.5vh 2vw;
        font-style: italic;
        font-size: clamp(15px, 2vw, 22px);
        color: #bbb;
        background: rgba(255,255,255,.03);
    }
    .sdtv-content p {
        margin-bottom: 2.5vh;
        line-height: 1.75;
        color: #ccc;
    }
    .sdtv-content strong { color: #fff; }
    .sdtv-content em { color: #e74c3c; font-style: normal; }
    .sdtv-footer {
        margin-top: 10vh;
        border-top: 1px solid #222;
        padding: 3vh 0;
        font-size: clamp(10px, 1.1vw, 13px);
        color: #555;
        text-align: center;
    }
    @media (max-width: 640px) {
        .sdtv-main { padding: 3vh 4vw; }
        .sdtv-nav { gap: .3rem; }
    }