#biz {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.biz-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(21, 32, 48, 0.72);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--sg-border);
    transition: background 0.3s ease, box-shadow 0.3s ease;
}

.biz-nav.scrolled {
    background: rgba(21, 32, 48, 0.94);
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.28);
}

.biz-nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 14px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.biz-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--sg-text);
}

.biz-brand-logo img {
    width: 34px;
    height: 34px;
    border-radius: 10px;
    display: block;
}

.biz-brand-name {
    font-size: 18px;
    font-weight: 650;
    letter-spacing: 0.02em;
}

.biz-brand-tag {
    font-size: 12px;
    font-weight: 500;
    color: var(--sg-accent);
    background: var(--sg-accent-dim);
    border: 1px solid rgba(56, 189, 248, 0.25);
    padding: 3px 10px;
    border-radius: 999px;
}

.biz-nav-back {
    font-size: 13px;
    color: var(--sg-text-muted);
    text-decoration: none;
    padding: 8px 14px;
    border-radius: 10px;
    transition: color 0.2s ease, background 0.2s ease;
}

.biz-nav-back:hover {
    color: var(--sg-text);
    background: var(--sg-surface);
}

.biz-hero {
    padding: 72px 24px 56px;
    background:
        radial-gradient(900px 420px at 18% 0%, rgba(56, 189, 248, 0.10), transparent 60%),
        radial-gradient(700px 380px at 85% 10%, rgba(129, 140, 248, 0.08), transparent 55%);
}

.biz-hero-inner {
    max-width: 1200px;
    margin: 0 auto;
}

.biz-hero-label {
    display: inline-block;
    font-size: 13px;
    font-weight: 500;
    color: var(--sg-accent);
    background: var(--sg-accent-dim);
    border: 1px solid rgba(56, 189, 248, 0.2);
    padding: 5px 12px;
    border-radius: 999px;
    margin-bottom: 20px;
}

.biz-hero-title {
    font-size: clamp(30px, 5vw, 46px);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.01em;
    color: var(--sg-text);
}

.biz-hero-title b {
    color: var(--sg-accent);
    font-weight: 700;
}

.biz-hero-sub {
    margin-top: 14px;
    font-size: 16px;
    color: var(--sg-text-muted);
    max-width: 560px;
    line-height: 1.7;
}

.biz-main {
    flex: 1;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    padding: 8px 24px 64px;
}

.biz-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 20px;
}

.biz-skeleton {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 20px;
}

.biz-skeleton-card {
    height: 190px;
    border-radius: 18px;
    background: linear-gradient(100deg, var(--sg-surface) 40%, rgba(255,255,255,0.10) 50%, var(--sg-surface) 60%);
    background-size: 200% 100%;
    animation: bizShimmer 1.4s infinite linear;
}

@keyframes bizShimmer {
    from { background-position: 120% 0; }
    to { background-position: -80% 0; }
}

.biz-empty {
    text-align: center;
    padding: 90px 20px;
    color: var(--sg-text-dim);
}

.biz-empty i {
    font-size: 42px;
    margin-bottom: 14px;
    color: var(--sg-border-hover);
}

.biz-empty p {
    font-size: 15px;
}

@media (max-width: 640px) {
    .biz-hero {
        padding: 48px 16px 40px;
    }

    .biz-brand-tag {
        display: none;
    }

    .biz-nav-inner,
    .biz-main {
        padding-left: 16px;
        padding-right: 16px;
    }

    .biz-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
}