body {
    background: #ffffff;
    color: #000000;
    font-family: monospace;
    font-size: 16px;
    line-height: 1.6;
    max-width: 800px;
    margin: 50px auto 120px auto;
    padding: 0 24px;
}
.logo {
    display: block;
    width: 160px;
    height: 160px;
    margin: 0 auto 1.5em auto;
}
p {
    margin-bottom: 1.4em;
    color: #000;
}
.date {
    margin-bottom: 2em;
}
.masthead {
    text-align: center;
    font-weight: bold;
    font-size: 20px;
    margin: 0 auto 0.5em auto;
}
.nav {
    text-align: center;
    margin-bottom: 1em;
}
.nav a {
    color: #000;
    margin: 0 0.4em;
}
.statusline {
    text-align: center;
    font-size: 11px;
    color: #333;
    margin: 2px 0 6px 0;
}
hr {
    border: none;
    border-top: 1px solid #000;
    margin: 2em 0;
}
.question {
    font-weight: bold;
    font-style: italic;
}
h1 {
    font-size: 22px;
    font-weight: bold;
}
.subtitle {
    font-style: italic;
    color: #000;
}
.paper {
    margin-bottom: 1em;
}
.paper a {
    color: #000;
    font-weight: bold;
}
.paper .tag {
    font-size: 14px;
    font-style: italic;
}
.definition {
    border-left: 3px solid #000;
    padding-left: 1em;
    margin-bottom: 1.4em;
}
form input[type="text"],
form input[type="email"] {
    box-sizing: border-box;
    width: 100%;
    padding: 6px;
    font-family: monospace;
    font-size: 14px;
    border: 1px solid #000;
    border-radius: 6px;
    background: #fff;
}
form textarea {
    box-sizing: border-box;
    width: 100%;
    height: 200px;
    padding: 6px;
    font-family: monospace;
    font-size: 14px;
    border: 1px solid #000;
    border-radius: 6px;
    background: #fff;
}
form input[type="submit"] {
    width: 100%;
    box-sizing: border-box;
    padding: 8px 24px;
    font-family: monospace;
    font-size: 14px;
    border: 1px solid #000;
    border-radius: 6px;
    background: #fff;
    cursor: pointer;
}
form input[type="radio"] {
    appearance: none;
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    border: 1px solid #000;
    border-radius: 0;
    background: #fff;
    margin: 0;
    vertical-align: middle;
    cursor: pointer;
}
form input[type="radio"]:checked {
    background: #000;
}
.kind {
    font-size: 14px;
    cursor: pointer;
}
#progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    width: 0%;
    background: #000;
    z-index: 10;
}
#toTop {
    position: fixed;
    right: 24px;
    bottom: 24px;
    border: 1px solid #000;
    background: #fff;
    color: #000;
    font-family: monospace;
    font-size: 28px;
    cursor: pointer;
    display: none;
    z-index: 10;
    padding: 4px 12px;
    line-height: 1;
    border-radius: 6px;
}
#toTop:hover {
    background: #f2f2f2;
    opacity: 1;
}
pre.chart {
    white-space: pre;
    overflow-x: auto;
    background: #f5f5f5;
    padding: 14px;
    font-size: 13px;
    line-height: 1.4;
}
pre.code, .doc pre {
    white-space: pre;
    overflow-x: auto;
    background: #f5f5f5;
    padding: 14px;
    font-size: 13px;
    line-height: 1.5;
}

/* Mobile */
@media (max-width: 720px) {
    body {
        margin: 24px auto 80px auto;
        padding: 0 14px;
        font-size: 15px;
    }
    .logo {
        width: 110px;
        height: 110px;
    }
    .masthead {
        font-size: 16px;
    }
    .nav {
        font-size: 16px;
        line-height: 2;
    }
    .nav a {
        margin: 0 0.2em;
        white-space: nowrap;
    }
    .statusline {
        font-size: 9px;
        line-height: 1.6;
    }
    h1 {
        font-size: 19px;
    }
    form input[type="text"],
    form input[type="email"],
    form textarea {
        font-size: 16px;
        padding: 10px;
    }
    form input[type="radio"] {
        width: 18px;
        height: 18px;
    }
    .kind {
        font-size: 16px;
    }
    form input[type="submit"] {
        font-size: 16px;
        padding: 12px 24px;
    }
    #toTop {
        right: 14px;
        bottom: 14px;
        font-size: 36px;
        padding: 6px 16px;
    }
}

/* AI Unit fund NAV — ETF quote style */
.fund {
    border: 1px solid #000;
    padding: 26px 30px;
    margin: 2.5em 0;
}
.fund-top {
    border-bottom: 2px solid #000;
    padding-bottom: 12px;
    margin-bottom: 18px;
}
.fund-ticker {
    font-size: 1.6em;
    font-weight: bold;
    letter-spacing: 0.04em;
}
.fund-name {
    display: block;
    font-size: 0.95em;
    margin-top: 4px;
}
.fund-quote {
    text-align: center;
    border-bottom: 2px solid #000;
    padding: 14px 0 18px 0;
    margin-bottom: 6px;
}
.fund-price {
    font-size: 2.8em;
    font-weight: bold;
    line-height: 1.1;
    letter-spacing: 0.02em;
}
.fund-change {
    font-size: 1.5em;
    font-weight: bold;
    margin-top: 4px;
}
.nav-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.95em;
}
.nav-table td {
    padding: 7px 0;
    border-bottom: 1px dotted #bbb;
}
.nav-table td:first-child {
    color: #333;
}
.nav-table td:last-child {
    text-align: right;
    font-weight: bold;
    font-size: 1.1em;
}
.nav-table td:first-child {
    color: #333;
}
.nav-table td:last-child {
    text-align: right;
    font-weight: bold;
}
.fund-note {
    font-size: 0.85em;
    margin: 14px 0 0 0;
}

/* Hackathon day-switcher buttons */
.day-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    margin: 1.5em 0;
}
.day-button {
    display: inline-block;
    padding: 2px 4px;
    font-family: monospace;
    font-size: 15px;
    color: #000;
    text-decoration: underline;
}
.day-button:hover {
    color: #1a0dab;
}

/* Hackathon audio "my take" block — clean light theme, no border */
.audio-box {
    background: #fff;
    border: none;
    padding: 12px 0;
    margin: 1.2em auto;
    max-width: 920px;
}
.audio-box p.audio-label {
    margin: 0 0 10px 0;
    font-weight: bold;
    color: #000;
    font-size: 1em;
    text-align: center;
}
.audio-box audio {
    display: block;
    width: 100%;
    height: 40px;
    margin: 0 auto;
}