* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
    min-height: 100%;
    font-family: "Segoe UI", Helvetica, Arial, sans-serif;
    background: #12121a;
    color: #e8e8f0;
}

.whitepaper-toolbar {
    position: sticky;
    top: 0;
    z-index: 20;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 14px 20px;
    background: rgba(26, 26, 46, 0.96);
    border-bottom: 1px solid rgba(0, 255, 128, 0.25);
    backdrop-filter: blur(8px);
}

.whitepaper-toolbar-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.whitepaper-back-btn,
.whitepaper-download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 16px;
    border-radius: 8px;
    font-weight: 700;
    text-decoration: none;
    transition: background 0.15s ease, color 0.15s ease;
}

.whitepaper-back-btn {
    background: rgba(255, 255, 255, 0.08);
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.14);
}

.whitepaper-back-btn:hover {
    background: rgba(255, 255, 255, 0.14);
}

.whitepaper-download-btn {
    background: #00ff80;
    color: #1a1a2e;
    border: 1px solid #00ff80;
}

.whitepaper-download-btn:hover {
    background: #00e673;
}

.whitepaper-toolbar-title {
    font-size: 0.95rem;
    color: #b0b0d0;
    font-weight: 600;
}

.whitepaper-content {
    max-width: 900px;
    margin: 0 auto;
    padding: 28px 20px 48px;
    line-height: 1.6;
    font-size: 15px;
}

.whitepaper-content h1 {
    color: #ffffff;
    font-size: 2rem;
    border-bottom: 3px solid #00ff80;
    padding-bottom: 0.35em;
    margin-top: 0;
}

.whitepaper-content h2 {
    color: #00ff80;
    font-size: 1.35rem;
    margin-top: 2em;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    padding-bottom: 0.25em;
}

.whitepaper-content h3 {
    color: #9fdcff;
    font-size: 1.1rem;
    margin-top: 1.4em;
}

.whitepaper-content h4 {
    color: #d8d8ef;
    font-size: 1rem;
    margin-top: 1.1em;
}

.whitepaper-content p,
.whitepaper-content li {
    color: #d0d0e4;
}

.whitepaper-content a {
    color: #66d9ff;
    word-break: break-all;
}

.whitepaper-content a:hover {
    color: #00ff80;
}

.whitepaper-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1em 0;
    font-size: 0.92rem;
    overflow-x: auto;
    display: block;
}

.whitepaper-content thead,
.whitepaper-content tbody,
.whitepaper-content tr {
    display: table;
    width: 100%;
    table-layout: fixed;
}

.whitepaper-content th {
    background: #0f3460;
    color: #fff;
    padding: 10px 12px;
    text-align: left;
}

.whitepaper-content td {
    border: 1px solid rgba(255, 255, 255, 0.12);
    padding: 8px 12px;
    vertical-align: top;
}

.whitepaper-content tr:nth-child(even) td {
    background: rgba(255, 255, 255, 0.03);
}

.whitepaper-content code {
    background: rgba(255, 255, 255, 0.08);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.88em;
    color: #ffd27f;
    word-break: break-all;
}

.whitepaper-content pre {
    background: rgba(0, 0, 0, 0.35);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-left: 4px solid #00ff80;
    padding: 14px 16px;
    overflow-x: auto;
    border-radius: 8px;
    font-size: 0.85rem;
    line-height: 1.45;
}

.whitepaper-content pre code {
    background: transparent;
    padding: 0;
    color: #e8e8f0;
}

.whitepaper-content hr {
    border: none;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    margin: 2em 0;
}

.whitepaper-content ul,
.whitepaper-content ol {
    padding-left: 1.4em;
}

.whitepaper-hero {
    text-align: center;
    margin-bottom: 2em;
}

.whitepaper-hero p {
    color: #b0b0d0;
}

.whitepaper-footer {
    text-align: center;
    margin-top: 3em;
    color: #888;
}

@media (max-width: 640px) {
    .whitepaper-toolbar {
        padding: 12px 14px;
    }

    .whitepaper-toolbar-title {
        width: 100%;
    }

    .whitepaper-content {
        padding: 20px 14px 40px;
        font-size: 14px;
    }

    .whitepaper-content h1 {
        font-size: 1.55rem;
    }
}