.brand-logo-img {
        width: 52px;
        height: 52px;
        border-radius: 16px;
        object-fit: cover;
        box-shadow:
            0 10px 30px rgba(15, 23, 42, 0.12),
            0 2px 8px rgba(15, 23, 42, 0.08);
    }

    .hero-shell {
        position: relative;
        overflow: hidden;
        border-radius: 32px;
        border: 1px solid rgba(148, 163, 184, 0.18);
        background:
            radial-gradient(circle at top left, rgba(96, 165, 250, 0.12), transparent 28%),
            radial-gradient(circle at bottom right, rgba(59, 130, 246, 0.10), transparent 24%),
            linear-gradient(135deg, #ffffff 0%, #f8fafc 48%, #eef4ff 100%);
        box-shadow:
            0 25px 60px rgba(15, 23, 42, 0.08),
            inset 0 1px 0 rgba(255,255,255,0.7);
    }

    .dark .hero-shell {
        background:
            radial-gradient(circle at top left, rgba(59, 130, 246, 0.14), transparent 28%),
            radial-gradient(circle at bottom right, rgba(37, 99, 235, 0.14), transparent 24%),
            linear-gradient(135deg, #111827 0%, #172033 55%, #0f172a 100%);
        border-color: rgba(148, 163, 184, 0.16);
        box-shadow:
            0 25px 60px rgba(2, 6, 23, 0.35),
            inset 0 1px 0 rgba(255,255,255,0.03);
    }

    .hero-shell::before {
        content: "";
        position: absolute;
        inset: 0;
        background-image:
            linear-gradient(rgba(148, 163, 184, 0.08) 1px, transparent 1px),
            linear-gradient(90deg, rgba(148, 163, 184, 0.08) 1px, transparent 1px);
        background-size: 36px 36px;
        mask-image: linear-gradient(to bottom right, rgba(0,0,0,0.30), transparent 70%);
        pointer-events: none;
    }

    .hero-badge {
        display: inline-flex;
        align-items: center;
        gap: 0.55rem;
        padding: 0.55rem 0.95rem;
        border-radius: 9999px;
        background: rgba(255, 255, 255, 0.78);
        border: 1px solid rgba(148, 163, 184, 0.20);
        color: #1d4ed8;
        font-size: 0.92rem;
        font-weight: 600;
        backdrop-filter: blur(10px);
        box-shadow: 0 8px 22px rgba(15, 23, 42, 0.06);
    }

    .dark .hero-badge {
        background: rgba(15, 23, 42, 0.72);
        border-color: rgba(148, 163, 184, 0.18);
        color: #93c5fd;
    }

    .hero-headline {
        letter-spacing: -0.035em;
        line-height: 1.05;
    }

    .hero-kicker-line {
        width: 72px;
        height: 4px;
        border-radius: 9999px;
        background: linear-gradient(90deg, #2563eb, #60a5fa);
        margin-bottom: 1.25rem;
        animation: pulseLine 3.5s ease-in-out infinite;
    }

    @keyframes pulseLine {
        0%, 100% { transform: scaleX(1); opacity: 0.85; }
        50% { transform: scaleX(1.18); opacity: 1; }
    }

    .hero-preview-stack {
        position: relative;
        width: 100%;
        max-width: 400px;
        min-height: 290px;
    }

    .hero-card-float {
        position: absolute;
        border-radius: 24px;
        border: 1px solid rgba(148, 163, 184, 0.18);
        background: rgba(255,255,255,0.84);
        backdrop-filter: blur(10px);
        box-shadow: 0 20px 40px rgba(15, 23, 42, 0.12);
    }

    .dark .hero-card-float {
        background: rgba(15, 23, 42, 0.78);
        border-color: rgba(148, 163, 184, 0.15);
        box-shadow: 0 20px 40px rgba(2, 6, 23, 0.32);
    }

    .hero-card-main {
        right: 0;
        top: 18px;
        width: 320px;
        padding: 18px;
        animation: floatMain 6s ease-in-out infinite;
    }

    .hero-card-back {
        left: 12px;
        bottom: 8px;
        width: 220px;
        padding: 16px;
        opacity: 0.92;
        animation: floatBack 7s ease-in-out infinite;
    }

    @keyframes floatMain {
        0%, 100% { transform: translateY(0px) rotate(0.4deg); }
        50% { transform: translateY(-8px) rotate(-0.3deg); }
    }

    @keyframes floatBack {
        0%, 100% { transform: translateY(0px) rotate(-2deg); }
        50% { transform: translateY(6px) rotate(-1deg); }
    }

    .mini-sudoku {
        display: grid;
        grid-template-columns: repeat(6, 1fr);
        gap: 4px;
        padding: 10px;
        border-radius: 18px;
        background: linear-gradient(180deg, rgba(239,246,255,0.95), rgba(248,250,252,0.95));
        border: 1px solid rgba(148, 163, 184, 0.18);
    }

    .dark .mini-sudoku {
        background: linear-gradient(180deg, rgba(30,41,59,0.95), rgba(15,23,42,0.95));
        border-color: rgba(148, 163, 184, 0.15);
    }

    .mini-sudoku span {
        aspect-ratio: 1;
        border-radius: 8px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 11px;
        font-weight: 700;
        color: #0f172a;
        background: rgba(255,255,255,0.86);
    }

    .dark .mini-sudoku span {
        color: #e2e8f0;
        background: rgba(51,65,85,0.92);
    }

    .process-chip {
        display: inline-flex;
        align-items: center;
        gap: 0.45rem;
        padding: 0.42rem 0.72rem;
        border-radius: 9999px;
        font-size: 0.78rem;
        font-weight: 600;
        color: #334155;
        background: rgba(248,250,252,0.88);
        border: 1px solid rgba(148, 163, 184, 0.16);
    }

    .dark .process-chip {
        color: #cbd5e1;
        background: rgba(30,41,59,0.88);
        border-color: rgba(148, 163, 184, 0.14);
    }

    .hero-link-btn {
        display: inline-flex;
        align-items: center;
        gap: 0.6rem;
        padding: 0.9rem 1.1rem;
        border-radius: 16px;
        border: 1px solid rgba(59, 130, 246, 0.30);
        background: rgba(255,255,255,0.72);
        color: #2563eb;
        font-weight: 600;
        transition: all 0.2s ease;
        backdrop-filter: blur(10px);
    }

    .hero-link-btn:hover {
        transform: translateY(-1px);
        background: rgba(255,255,255,0.92);
        box-shadow: 0 14px 30px rgba(37, 99, 235, 0.10);
    }

    .dark .hero-link-btn {
        background: rgba(15,23,42,0.72);
        color: #93c5fd;
        border-color: rgba(147, 197, 253, 0.25);
    }

    .dark .hero-link-btn:hover {
        background: rgba(15,23,42,0.92);
    }

    .hero-note {
        font-size: 0.95rem;
        color: #64748b;
    }

    .dark .hero-note {
        color: #94a3b8;
    }

.hero-cell {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 2.05rem;
    border-radius: 0.45rem;
    background: rgba(255,255,255,0.96);
    color: #0f172a;
    font-size: 0.95rem;
    font-weight: 700;
    line-height: 1;
}

.dark .hero-cell {
    background: rgba(31,41,55,0.96);
    color: #f8fafc;
}

.grid-overlay-9x9 {
    background-image:
        linear-gradient(to right, transparent calc(33.333% - 1px), rgba(59,130,246,0.9) calc(33.333% - 1px), rgba(59,130,246,0.9) calc(33.333% + 1px), transparent calc(33.333% + 1px)),
        linear-gradient(to right, transparent calc(66.666% - 1px), rgba(59,130,246,0.9) calc(66.666% - 1px), rgba(59,130,246,0.9) calc(66.666% + 1px), transparent calc(66.666% + 1px)),
        linear-gradient(to bottom, transparent calc(33.333% - 1px), rgba(59,130,246,0.9) calc(33.333% - 1px), rgba(59,130,246,0.9) calc(33.333% + 1px), transparent calc(33.333% + 1px)),
        linear-gradient(to bottom, transparent calc(66.666% - 1px), rgba(59,130,246,0.9) calc(66.666% - 1px), rgba(59,130,246,0.9) calc(66.666% + 1px), transparent calc(66.666% + 1px));
    border-radius: 1rem;
}

.detection-scan-line {
    position: absolute;
    left: 6%;
    right: 6%;
    height: 2px;
    background: linear-gradient(90deg, transparent 0%, rgba(34,197,94,0.9) 15%, rgba(74,222,128,1) 50%, rgba(34,197,94,0.9) 85%, transparent 100%);
    box-shadow: 0 0 12px rgba(34,197,94,0.55);
    animation: scanDown 4.2s ease-in-out infinite;
}

.detect-box {
    position: absolute;
    border: 2px solid rgba(34,197,94,0.85);
    border-radius: 0.7rem;
    box-shadow: 0 0 0 1px rgba(34,197,94,0.08), 0 0 14px rgba(34,197,94,0.16);
    animation: pulseDetect 2.8s ease-in-out infinite;
}

.detect-box-1 { top: 8%; left: 6%; width: 27%; height: 27%; animation-delay: 0s; }
.detect-box-2 { top: 8%; left: 37%; width: 27%; height: 27%; animation-delay: .2s; }
.detect-box-3 { top: 8%; left: 68%; width: 26%; height: 27%; animation-delay: .4s; }
.detect-box-4 { top: 38%; left: 37%; width: 27%; height: 27%; animation-delay: .6s; }
.detect-box-5 { top: 69%; left: 37%; width: 27%; height: 23%; animation-delay: .8s; }

.detect-dot {
    position: absolute;
    width: 8px;
    height: 8px;
    margin-left: -4px;
    margin-top: -4px;
    border-radius: 9999px;
    background: rgba(74,222,128,1);
    box-shadow: 0 0 0 5px rgba(34,197,94,0.14), 0 0 12px rgba(34,197,94,0.5);
    animation: dotPulse 2.2s ease-in-out infinite;
}

@keyframes scanDown {
    0%   { top: 8%; opacity: 0; }
    10%  { opacity: 1; }
    50%  { top: 48%; opacity: 1; }
    90%  { opacity: 1; }
    100% { top: 88%; opacity: 0; }
}

@keyframes pulseDetect {
    0%, 100% {
        opacity: 0.55;
        transform: scale(1);
    }
    50% {
        opacity: 1;
        transform: scale(1.01);
    }
}

@keyframes dotPulse {
    0%, 100% {
        transform: scale(1);
        opacity: 0.7;
    }
    50% {
        transform: scale(1.35);
        opacity: 1;
    }
}