html, body {
    margin: 0;
    padding: 0;
    background: #0b0f14;
    color: #e8eef7;
    font-family: Arial, Helvetica, sans-serif;
}

* {
    box-sizing: border-box;
}

body.qt-body {
    background:
        radial-gradient(circle at top left, rgba(77, 163, 255, 0.12), transparent 24%),
        linear-gradient(180deg, #081018 0%, #0b0f14 100%);
    min-height: 100vh;
}

.qt-shell {
    padding: 0 18px 42px;
}

.qt-topbar-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}

.qt-brand {
    display: inline-block;
    color: #f4f8fc;
    text-decoration: none;
    font-size: 28px;
    font-weight: 700;
    letter-spacing: 0.01em;
}

.qt-tagline {
    margin-top: 6px;
    color: #90a0b5;
    font-size: 13px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.qt-nav {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.qt-nav-link {
    color: #b2bfd0;
    text-decoration: none;
    padding: 10px 16px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.06);
    background: rgba(255, 255, 255, 0.02);
    transition: 0.18s ease;
}

.qt-nav-link:hover,
.qt-nav-link:focus {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.06);
}

.qt-nav-link-active {
    color: #eaf6ff;
    border-color: rgba(77, 163, 255, 0.42);
    background: rgba(77, 163, 255, 0.16);
}

.qt-hero,
.qt-panel {
    background: linear-gradient(135deg, rgba(77, 163, 255, 0.08), rgba(255,255,255,0.02)), rgba(18, 25, 34, 0.92);
    border: 1px solid rgba(255,255,255,0.06);
    box-shadow: 0 20px 60px rgba(0,0,0,0.25);
}

.qt-hero {
    overflow: hidden;
}

.qt-hero-inner {
    padding-top: 34px;
    padding-bottom: 34px;
}

.qt-eyebrow {
    font-size: 12px;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    color: #79b9ff;
    margin-bottom: 14px;
}

.qt-title {
    margin: 0;
    max-width: 840px;
    font-size: 54px;
    line-height: 1.03;
    font-weight: 700;
    color: #f5f9ff;
}

.qt-subtitle,
.qt-section-subtitle,
.qt-copy {
    color: #b9c4d3;
    line-height: 1.7;
}

.qt-subtitle {
    margin-top: 16px;
    max-width: 760px;
    font-size: 17px;
}

.qt-cta-row {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 24px;
}

.qt-btn {
    border-radius: 999px;
    padding: 12px 18px;
    font-weight: 600;
}

.qt-btn-primary {
    background: rgba(77, 163, 255, 0.18);
    color: #eaf6ff;
    border: 1px solid rgba(77, 163, 255, 0.42);
}

.qt-btn-primary:hover,
.qt-btn-primary:focus {
    background: rgba(77, 163, 255, 0.28) !important;
    color: #ffffff !important;
}

.qt-btn-secondary {
    background: rgba(255, 255, 255, 0.03);
    color: #d7e0ea;
    border: 1px solid rgba(255,255,255,0.08);
}

.qt-btn-secondary:hover,
.qt-btn-secondary:focus {
    background: rgba(255,255,255,0.08) !important;
    color: #ffffff !important;
}

.qt-summary-card,
.qt-feature-card,
.qt-note-card {
    background: rgba(8, 12, 18, 0.58);
    border: 1px solid rgba(255,255,255,0.08);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.03);
}

.qt-summary-card {
    margin-top: 10px;
    padding: 24px;
}

.qt-summary-label,
.qt-mini-label,
.qt-feature-kicker {
    color: #8fa3bb;
    font-size: 12px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

.qt-summary-value {
    margin-top: 10px;
    font-size: 28px;
    font-weight: 700;
    color: #f3f8ff;
    line-height: 1.2;
}

.qt-summary-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 20px;
}

.qt-mini-value {
    margin-top: 4px;
    color: #e8eff8;
    font-size: 15px;
    line-height: 1.4;
}

.qt-section {
    margin-top: 24px;
    padding: 28px 0 18px;
}

.qt-section-head {
    padding: 0 28px 6px;
}

.qt-section-title {
    margin: 0;
    font-size: 40px;
    line-height: 1.08;
    color: #f5f9ff;
}

.qt-card-grid {
    padding-top: 10px;
    padding-bottom: 10px;
}

.qt-card-wrap {
    margin-bottom: 18px;
}

.qt-feature-card {
    height: 100%;
    min-height: 210px;
    padding: 26px;
}

.qt-feature-title {
    margin: 14px 0 12px;
    color: #f4f8fc;
    font-size: 32px;
    line-height: 1.12;
}

.qt-feature-text {
    margin: 0;
    color: #b9c4d3;
    font-size: 16px;
    line-height: 1.7;
}

.qt-copy {
    margin: 0;
    font-size: 17px;
}

.qt-note-card {
    padding: 20px 22px;
}

.qt-note-card a {
    color: #eaf6ff;
    text-decoration: none;
}

.qt-note-card a:hover,
.qt-note-card a:focus {
    text-decoration: underline;
}

.qt-footer {
    margin-top: 34px;
}

.qt-footer-line {
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.10), transparent);
}

.qt-footer-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    flex-wrap: wrap;
    padding-top: 14px;
}

.qt-footer-text {
    color: #7f90a4;
    font-size: 12px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.qt-footer-links {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.qt-footer-links a {
    color: #96a7bb;
    text-decoration: none;
    font-size: 14px;
}

.qt-footer-links a:hover,
.qt-footer-links a:focus {
    color: #ffffff;
}

@media (max-width: 992px) {
    .qt-title {
        font-size: 42px;
    }

    .qt-section-title {
        font-size: 32px;
    }

    .qt-feature-title {
        font-size: 28px;
    }
}

@media (max-width: 640px) {
    .qt-shell {
        padding-left: 12px;
        padding-right: 12px;
    }

    .qt-title {
        font-size: 34px;
    }

    .qt-section-title {
        font-size: 28px;
    }

    .qt-summary-grid {
        grid-template-columns: 1fr;
    }

    .qt-feature-title {
        font-size: 24px;
    }
}