/* ============================================================
   ARES ENERGY — BATTERY SAFETY UPGRADES PAGE (bsu-beauty.css)
   Accent: Blue (#3b82f6 / #2563eb) safety/compliance theme
   Secondary: Red-amber warning tones (#ef4444 / #f59e0b)
   Consistent with home-beauty, battery-beauty, bfd/bi-beauty
   ============================================================ */

/* ── SHARED UTILITIES ────────────────────────────────────── */
.bsu-section-label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    color: var(--color-accent);
    text-transform: uppercase;
    margin-bottom: 0.75rem;
    padding: 4px 12px;
    background: rgba(243,139,42,0.08);
    border: 1px solid rgba(243,139,42,0.2);
    border-radius: 30px;
}
.bsu-section-label.bsu-label-light {
    background: rgba(59,130,246,0.15);
    border-color: rgba(59,130,246,0.3);
    color: #93c5fd;
}
.bsu-section-header { margin-bottom: 3rem; }
.bsu-section-header h2 {
    font-size: clamp(1.875rem, 3.5vw, 2.75rem);
    font-weight: 800;
    color: var(--color-primary);
    letter-spacing: -0.025em;
    line-height: 1.15;
    margin-bottom: 0.875rem;
}
.bsu-section-desc {
    font-size: 1.05rem;
    color: #6b7280;
    max-width: 620px;
    margin: 0 auto;
    line-height: 1.75;
}
.bsu-section-desc.bsu-desc-light { color: rgba(255,255,255,0.6); }

/* Shared image placeholder */
.bsu-placeholder-icon {
    width: 60px; height: 60px;
    border-radius: 16px;
    background: rgba(59,130,246,0.1);
    border: 1px solid rgba(59,130,246,0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #3b82f6;
    position: relative; z-index: 1;
}
.bsu-placeholder-icon svg { width: 28px; height: 28px; }

/* Buttons */
.bsu-btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 0.9rem 1.875rem;
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    color: #fff;
    font-weight: 700;
    font-size: 0.9375rem;
    border-radius: 12px;
    text-decoration: none;
    box-shadow: 0 4px 16px rgba(59,130,246,0.35);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.bsu-btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(59,130,246,0.5);
    background: linear-gradient(135deg, #60a5fa, #3b82f6);
    color: #fff;
}
.bsu-btn-primary.bsu-btn-lg { padding: 1rem 2.25rem; font-size: 1rem; }
.bsu-btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 0.9rem 1.875rem;
    background: transparent;
    color: var(--color-primary);
    font-weight: 600;
    font-size: 0.9375rem;
    border-radius: 10px;
    text-decoration: none;
    border: 2px solid rgba(11,28,46,0.18);
    transition: border-color 0.2s, background 0.2s;
}
.bsu-btn-outline:hover { border-color: #3b82f6; background: rgba(59,130,246,0.05); color: #2563eb; }
.bsu-btn-outline-light {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 1rem 2.25rem;
    background: rgba(255,255,255,0.05);
    color: #fff;
    font-weight: 600;
    font-size: 1rem;
    border-radius: 12px;
    text-decoration: none;
    border: 1px solid rgba(255,255,255,0.15);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(10px);
}
.bsu-btn-outline-light:hover { 
    background: rgba(255,255,255,0.15); 
    border-color: rgba(255,255,255,0.3); 
    transform: translateY(-2px);
    color: #fff; 
    box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}

/* ── HERO SECTION ────────────────────────────────────────── */
.bsu-hero-section {
    padding: clamp(5rem, 10vw, 7rem) 0 clamp(3.5rem, 7vw, 5rem);
    background:
        radial-gradient(ellipse at 70% 40%, rgba(59,130,246,0.1) 0%, transparent 55%),
        radial-gradient(ellipse at 5% 80%, rgba(243,139,42,0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 0%, rgba(59,130,246,0.06) 0%, transparent 60%),
        linear-gradient(160deg, #eff6ff 0%, #ffffff 45%, #f3f8ff 100%);
    color: var(--color-primary);
    border-bottom: 1px solid rgba(59,130,246,0.12);
    position: relative;
    overflow: hidden;
}

/* Breadcrumb */
.bsu-breadcrumb {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    color: #6b7280;
    margin-bottom: 2.25rem;
    flex-wrap: wrap;
}
.bsu-breadcrumb a { color: #6b7280; text-decoration: none; transition: color 0.2s; }
.bsu-breadcrumb a:hover { color: #3b82f6; }
.bsu-breadcrumb svg { width: 14px; height: 14px; opacity: 0.5; }
.bsu-breadcrumb span { color: var(--color-primary); font-weight: 600; }

/* Hero grid */
.bsu-hero-grid {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: clamp(2.5rem, 6vw, 5rem);
    align-items: center;
}
.bsu-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background: rgba(59,130,246,0.1);
    border: 1px solid rgba(59,130,246,0.25);
    border-radius: 30px;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: #2563eb;
    text-transform: uppercase;
    margin-bottom: 1.25rem;
}
.bsu-hero-badge svg { width: 15px; height: 15px; }
.bsu-hero-section h1 {
    font-size: clamp(2.125rem, 4.5vw, 3.5rem);
    font-weight: 800;
    color: var(--color-primary);
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: 1.25rem;
}
.bsu-title-accent {
    background: linear-gradient(135deg, #3b82f6 0%, #10b981 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.bsu-hero-lead {
    font-size: clamp(1rem, 1.5vw, 1.125rem);
    color: #374151;
    line-height: 1.75;
    margin-bottom: 0.75rem;
}
.bsu-hero-sub {
    font-size: 0.9375rem;
    color: #6b7280;
    line-height: 1.7;
    margin-bottom: 1.5rem;
}
.bsu-hero-features {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 2rem;
}
.bsu-feature {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8375rem;
    font-weight: 600;
    color: #374151;
    padding: 5px 12px;
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 20px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}
.bsu-feature svg { width: 15px; height: 15px; color: #3b82f6; }
.bsu-hero-ctas { display: flex; gap: 1rem; flex-wrap: wrap; }

/* Hero visual: compliance status card */
.bsu-hero-visual { position: relative; }
.bsu-hero-glow {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 260px; height: 260px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(59,130,246,0.1) 0%, transparent 70%);
    pointer-events: none;
}
.bsu-hero-card {
    position: relative;
    background: var(--color-primary);
    border-radius: 20px;
    padding: 1.875rem;
    box-shadow: 0 16px 48px rgba(11,28,46,0.25);
    border-top: 3px solid #3b82f6;
    overflow: hidden;
}
.bsu-hero-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 80% 20%, rgba(59,130,246,0.07) 0%, transparent 60%);
    pointer-events: none;
}
.bsu-card-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.375rem;
    position: relative;
}
.bsu-card-icon-ring {
    width: 52px; height: 52px;
    border-radius: 13px;
    background: rgba(59,130,246,0.15);
    border: 1px solid rgba(59,130,246,0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #60a5fa;
    flex-shrink: 0;
}
.bsu-card-icon-ring svg { width: 26px; height: 26px; }
.bsu-card-label {
    display: block;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    color: rgba(255,255,255,0.4);
    text-transform: uppercase;
    margin-bottom: 3px;
}
.bsu-card-sub {
    font-size: 0.875rem;
    font-weight: 600;
    color: rgba(255,255,255,0.7);
}

/* Compliance check items */
.bsu-card-items {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
    position: relative;
}
.bsu-card-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    border-radius: 8px;
    font-size: 0.8rem;
    font-weight: 500;
}
.bsu-item-icon { flex-shrink: 0; }
.bsu-item-icon svg { width: 14px; height: 14px; }
.bsu-card-item > span:nth-child(2) { flex: 1; }
.bsu-item-tag {
    font-size: 0.68rem;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 10px;
    white-space: nowrap;
    flex-shrink: 0;
}
.bsu-item-warn {
    background: rgba(239,68,68,0.1);
    color: #fca5a5;
}
.bsu-item-warn .bsu-item-icon svg { color: #f87171; }
.bsu-tag-warn { background: rgba(239,68,68,0.2); color: #fca5a5; }
.bsu-item-ok {
    background: rgba(16,185,129,0.08);
    color: #6ee7b7;
}
.bsu-item-ok .bsu-item-icon svg { color: #34d399; }
.bsu-tag-ok { background: rgba(16,185,129,0.15); color: #6ee7b7; }
.bsu-card-footer {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 0.75rem;
    color: rgba(255,255,255,0.4);
    padding-top: 1rem;
    border-top: 1px solid rgba(255,255,255,0.07);
    position: relative;
}
.bsu-card-footer svg { width: 14px; height: 14px; color: #60a5fa; }

/* ── WHY UPGRADES MATTER ─────────────────────────────────── */
.bsu-why-section {
    padding: clamp(4rem, 8vw, 6rem) 0;
    background: #fff;
}
.bsu-why-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(2rem, 5vw, 5rem);
    align-items: center;
}
.bsu-why-content h2 {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 800;
    color: var(--color-primary);
    letter-spacing: -0.02em;
    margin-bottom: 1.25rem;
    line-height: 1.2;
}
.bsu-why-content p {
    color: #4b5563;
    line-height: 1.8;
    margin-bottom: 1rem;
    font-size: 1rem;
}
.bsu-why-warning {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-top: 1.5rem;
    padding: 1rem 1.25rem;
    background: rgba(239,68,68,0.05);
    border-left: 3px solid #ef4444;
    border-radius: 0 10px 10px 0;
    font-size: 0.9rem;
    font-weight: 600;
    color: #991b1b;
    line-height: 1.5;
}
.bsu-why-warning svg { width: 18px; height: 18px; color: #ef4444; flex-shrink: 0; margin-top: 1px; }
.bsu-why-visual {
    position: sticky;
    top: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 380px;
}
.bsu-why-visual img,
.bsu-why-visual picture {
    width: 100%;
    min-height: 380px;
    display: block;
}
.bsu-why-img-placeholder {
    width: 100%;
    border-radius: 20px;
    background: linear-gradient(135deg, #fff1f2, #ffe4e6);
    border: 2px dashed rgba(239,68,68,0.2);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    padding: 3.5rem 2rem;
    min-height: 300px;
    text-align: center;
    color: #6b7280;
    position: sticky;
    top: 100px;
    overflow: hidden;
}
.bsu-why-img-placeholder::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 30% 30%, rgba(239,68,68,0.05) 0%, transparent 60%);
    pointer-events: none;
}
.bsu-why-img-placeholder .bsu-placeholder-icon {
    background: rgba(239,68,68,0.1);
    border-color: rgba(239,68,68,0.2);
    color: #ef4444;
    position: relative; z-index: 1;
}
.bsu-why-img-placeholder span {
    font-weight: 700;
    color: #374151;
    font-size: 0.9rem;
    position: relative; z-index: 1;
}
.bsu-why-img-placeholder p {
    font-size: 0.8rem;
    color: #9ca3af;
    margin: 0;
    position: relative; z-index: 1;
}

/* ── WARNING SIGNS ───────────────────────────────────────── */
.bsu-signs-section {
    padding: clamp(4rem, 8vw, 6rem) 0;
    background: linear-gradient(180deg, #f8f9fb 0%, #ffffff 100%);
}
.bsu-signs-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
}
.bsu-sign-card {
    background: #fff;
    border-radius: 18px;
    padding: 1.875rem 1.625rem;
    border: 1px solid #f3f4f6;
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
    position: relative;
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
}
.bsu-sign-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 14px 36px rgba(0,0,0,0.08);
    border-color: rgba(239,68,68,0.18);
}
.bsu-sign-num {
    font-size: 2.75rem;
    font-weight: 800;
    color: rgba(239,68,68,0.07);
    letter-spacing: -0.04em;
    line-height: 1;
    position: absolute;
    top: 1rem; right: 1.25rem;
}
.bsu-sign-icon {
    width: 50px; height: 50px;
    border-radius: 13px;
    background: rgba(239,68,68,0.08);
    border: 1px solid rgba(239,68,68,0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ef4444;
    margin-bottom: 1.125rem;
    transition: background 0.3s;
}
.bsu-sign-card:hover .bsu-sign-icon { background: rgba(239,68,68,0.14); }
.bsu-sign-icon svg { width: 24px; height: 24px; }
.bsu-sign-card h3 {
    font-size: 0.975rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
    letter-spacing: -0.01em;
}
.bsu-sign-card p {
    font-size: 0.845rem;
    color: #6b7280;
    line-height: 1.65;
    margin: 0;
}

/* ── WHAT UPGRADES INCLUDE ───────────────────────────────── */
.bsu-upgrades-section {
    padding: clamp(4rem, 8vw, 6rem) 0;
    background: #fff;
}
.bsu-upgrades-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(2rem, 5vw, 5rem);
    align-items: start;
}
.bsu-upgrades-content h2 {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 800;
    color: var(--color-primary);
    letter-spacing: -0.02em;
    margin-bottom: 1.25rem;
    line-height: 1.2;
}
.bsu-upgrades-content > p {
    color: #4b5563;
    line-height: 1.8;
    margin-bottom: 1.75rem;
    font-size: 1rem;
}
.bsu-upgrade-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}
.bsu-upgrade-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem 0;
    border-bottom: 1px solid #f3f4f6;
}
.bsu-upgrade-item:last-child { border-bottom: none; }
.bsu-upgrade-icon {
    width: 40px; height: 40px;
    border-radius: 10px;
    background: rgba(59,130,246,0.08);
    border: 1px solid rgba(59,130,246,0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #3b82f6;
    flex-shrink: 0;
    margin-top: 2px;
}
.bsu-upgrade-icon svg { width: 18px; height: 18px; }
.bsu-upgrade-body h4 {
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 0.25rem;
}
.bsu-upgrade-body p {
    font-size: 0.83rem;
    color: #6b7280;
    line-height: 1.6;
    margin: 0;
}
.bsu-upgrades-visual {
    position: sticky;
    top: 100px;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    min-height: 420px;
}
.bsu-upgrades-visual img,
.bsu-upgrades-visual picture {
    width: 100%;
    min-height: 420px;
    display: block;
}
/* 2-column layout for upgrade items list */
.bsu-upgrade-list-2col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0 1.5rem;
}
.bsu-upgrade-list-2col .bsu-upgrade-item {
    border-bottom: 1px solid #f3f4f6;
}
.bsu-upgrades-img-placeholder {
    width: 100%;
    border-radius: 20px;
    background: linear-gradient(135deg, #eff6ff, #dbeafe);
    border: 2px dashed rgba(59,130,246,0.2);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    padding: 3.5rem 2rem;
    min-height: 320px;
    text-align: center;
    color: #6b7280;
    position: sticky;
    top: 100px;
    overflow: hidden;
}
.bsu-upgrades-img-placeholder::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 30% 30%, rgba(59,130,246,0.06) 0%, transparent 60%);
    pointer-events: none;
}
.bsu-upgrades-img-placeholder span {
    font-weight: 700;
    color: #374151;
    font-size: 0.9rem;
    position: relative; z-index: 1;
}
.bsu-upgrades-img-placeholder p {
    font-size: 0.8rem;
    color: #9ca3af;
    margin: 0;
    position: relative; z-index: 1;
}
.bsu-upgrades-img-placeholder .bsu-placeholder-icon { position: relative; z-index: 1; }

/* ── STANDARDS SECTION ───────────────────────────────────── */
.bsu-standards-section {
    padding: clamp(4rem, 8vw, 6.5rem) 0;
    background: var(--color-primary);
    position: relative;
    overflow: hidden;
}
.bsu-standards-section::before {
    content: '';
    position: absolute;
    bottom: -100px; right: -80px;
    width: 450px; height: 450px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(59,130,246,0.06) 0%, transparent 70%);
    pointer-events: none;
}
.bsu-standards-section::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(59,130,246,0.3), rgba(16,185,129,0.2), transparent);
}
.bsu-standards-title {
    color: #fff !important;
    font-size: clamp(1.875rem, 3vw, 2.625rem) !important;
}
.bsu-standards-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
}
.bsu-standard-card {
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 18px;
    padding: 1.875rem 1.5rem;
    transition: background 0.3s, transform 0.3s, border-color 0.3s;
}
.bsu-standard-card:hover {
    background: rgba(255,255,255,0.07);
    border-color: rgba(59,130,246,0.3);
    transform: translateY(-4px);
}
.bsu-std-badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    background: rgba(59,130,246,0.15);
    border: 1px solid rgba(59,130,246,0.25);
    border-radius: 20px;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    color: #93c5fd;
    margin-bottom: 1rem;
}
.bsu-standard-card h3 {
    font-size: 0.975rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 0.625rem;
    letter-spacing: -0.01em;
}
.bsu-standard-card p {
    font-size: 0.83rem;
    color: rgba(255,255,255,0.52);
    line-height: 1.65;
    margin: 0;
}

/* ── PROCESS STEPS ───────────────────────────────────────── */
.bsu-process-section {
    padding: clamp(4rem, 8vw, 6rem) 0;
    background: #fff;
}
.bsu-process-section .bsu-section-header h2 { color: var(--color-primary); }
.bsu-process-grid {
    display: flex;
    align-items: flex-start;
    gap: 0;
    overflow-x: auto;
    padding-bottom: 1rem;
    scroll-snap-type: x mandatory;
}
.bsu-process-step {
    flex: 1;
    min-width: 160px;
    max-width: 220px;
    background: #f9fafb;
    border: 1px solid #f3f4f6;
    border-radius: 16px;
    padding: 1.625rem 1.25rem;
    text-align: center;
    scroll-snap-align: start;
    transition: background 0.3s, border-color 0.3s, transform 0.3s;
}
.bsu-process-step:hover {
    background: #fff;
    border-color: rgba(59,130,246,0.2);
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.06);
}
.bsu-process-connector {
    flex-shrink: 0;
    width: 40px;
    height: 2px;
    background: linear-gradient(90deg, rgba(59,130,246,0.3), rgba(16,185,129,0.3));
    align-self: center;
    margin-bottom: 0;
    border-radius: 2px;
    position: relative;
    top: -20px;
}
.bsu-step-num {
    font-size: 2rem;
    font-weight: 800;
    color: rgba(59,130,246,0.12);
    letter-spacing: -0.04em;
    line-height: 1;
    margin-bottom: 0.625rem;
}
.bsu-step-icon {
    width: 52px; height: 52px;
    border-radius: 14px;
    background: rgba(59,130,246,0.08);
    border: 1px solid rgba(59,130,246,0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #3b82f6;
    margin: 0 auto 1rem;
    transition: background 0.3s;
}
.bsu-step-icon.bsu-step-final {
    background: rgba(16,185,129,0.08);
    border-color: rgba(16,185,129,0.15);
    color: #10b981;
}
.bsu-process-step:hover .bsu-step-icon { background: rgba(59,130,246,0.14); }
.bsu-step-icon svg { width: 24px; height: 24px; }
.bsu-process-step h3 {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}
.bsu-process-step p {
    font-size: 0.8rem;
    color: #6b7280;
    line-height: 1.6;
    margin: 0;
}

/* ── OLDER SYSTEMS SECTION ───────────────────────────────── */
.bsu-older-section {
    padding: clamp(4rem, 8vw, 6rem) 0;
    background: linear-gradient(180deg, #f9fafb 0%, #ffffff 100%);
}
.bsu-older-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(2rem, 5vw, 5rem);
    align-items: center;
}
.bsu-older-img-placeholder {
    width: 100%;
    border-radius: 20px;
    background: linear-gradient(135deg, #fefce8, #fef9c3);
    border: 2px dashed rgba(234,179,8,0.25);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    padding: 3.5rem 2rem;
    min-height: 300px;
    text-align: center;
    color: #6b7280;
    position: sticky;
    top: 100px;
    overflow: hidden;
}
.bsu-older-img-placeholder::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 30% 30%, rgba(234,179,8,0.06) 0%, transparent 60%);
    pointer-events: none;
}
.bsu-older-img-placeholder .bsu-placeholder-icon {
    background: rgba(234,179,8,0.1);
    border-color: rgba(234,179,8,0.2);
    color: #ca8a04;
    position: relative; z-index: 1;
}
.bsu-older-img-placeholder span {
    font-weight: 700;
    color: #374151;
    font-size: 0.9rem;
    position: relative; z-index: 1;
}
.bsu-older-img-placeholder p {
    font-size: 0.8rem;
    color: #9ca3af;
    margin: 0;
    position: relative; z-index: 1;
}
.bsu-older-content h2 {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 800;
    color: var(--color-primary);
    letter-spacing: -0.02em;
    margin-bottom: 1.25rem;
    line-height: 1.2;
}
.bsu-older-content p {
    color: #4b5563;
    line-height: 1.8;
    margin-bottom: 1rem;
    font-size: 1rem;
}
.bsu-older-points {
    display: flex;
    flex-direction: column;
    gap: 0.625rem;
    margin-top: 1.5rem;
}
.bsu-older-point {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9rem;
    font-weight: 600;
    color: #374151;
}
.bsu-older-dot {
    width: 10px; height: 10px;
    border-radius: 50%;
    background: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59,130,246,0.15);
    flex-shrink: 0;
}

/* ── WHY CHOOSE US ───────────────────────────────────────── */
.bsu-trust-section {
    padding: clamp(4rem, 8vw, 6rem) 0;
    background: #fff;
}
.bsu-trust-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
}
.bsu-trust-card {
    background: #f9fafb;
    border: 1px solid #f3f4f6;
    border-radius: 18px;
    padding: 1.875rem 1.625rem;
    transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
}
.bsu-trust-card:hover {
    transform: translateY(-5px);
    background: var(--color-primary);
    border-color: var(--color-primary);
    box-shadow: 0 15px 35px rgba(11, 28, 46, 0.15);
}
.bsu-trust-card:hover h3 {
    color: #ffffff;
}
.bsu-trust-card:hover p {
    color: rgba(255, 255, 255, 0.85);
}
.bsu-trust-card:hover .bsu-trust-icon {
    background: rgba(59, 130, 246, 0.15);
    border-color: rgba(59, 130, 246, 0.25);
    color: #93c5fd;
}
.bsu-trust-featured {
    background: var(--color-primary);
    border-color: transparent;
    border-top: 3px solid #3b82f6;
}
.bsu-trust-featured:hover { border-color: transparent; border-top-color: #3b82f6; }
.bsu-trust-icon {
    width: 48px; height: 48px;
    border-radius: 12px;
    background: rgba(59,130,246,0.08);
    border: 1px solid rgba(59,130,246,0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #3b82f6;
    margin-bottom: 1.125rem;
}
.bsu-trust-featured .bsu-trust-icon {
    background: rgba(59,130,246,0.15);
    border-color: rgba(59,130,246,0.25);
    color: #93c5fd;
}
.bsu-trust-icon svg { width: 22px; height: 22px; }
.bsu-trust-card h3 { font-size: 1rem; font-weight: 700; color: var(--color-primary); margin-bottom: 0.5rem; }
.bsu-trust-featured h3 { color: #fff; }
.bsu-trust-card p { font-size: 0.85rem; color: #6b7280; line-height: 1.65; margin: 0; }
.bsu-trust-featured p { color: rgba(255,255,255,0.6); }

/* ── FINAL CTA BANNER ────────────────────────────────────── */
.bsu-cta-section {
    padding: clamp(5rem, 8vw, 7rem) 0;
    position: relative;
    overflow: hidden;
    background: var(--color-primary);
}
.bsu-cta-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(59,130,246,0.2) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 30%, rgba(16,185,129,0.15) 0%, transparent 60%),
        radial-gradient(ellipse at 50% 100%, rgba(59,130,246,0.15) 0%, transparent 70%);
    pointer-events: none;
}
.bsu-cta-inner {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: clamp(2.5rem, 5vw, 5rem);
    align-items: center;
}
.bsu-cta-text h2 {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 800;
    color: #fff;
    letter-spacing: -0.025em;
    line-height: 1.15;
    margin-bottom: 0.875rem;
}
.bsu-cta-text p {
    font-size: 1.05rem;
    color: rgba(255,255,255,0.65);
    line-height: 1.7;
}
.bsu-cta-text .bsu-section-label { color: #93c5fd; }
.bsu-cta-actions {
    display: flex;
    flex-direction: column;
    gap: 0.875rem;
    flex-shrink: 0;
    min-width: 260px;
}
.bsu-cta-trust {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 0.775rem;
    color: rgba(255,255,255,0.45);
    margin: 0;
}
.bsu-cta-trust svg { width: 15px; height: 15px; color: #60a5fa; flex-shrink: 0; }

/* ── RELATED SERVICES ────────────────────────────────────── */
.bsu-related-section {
    padding: clamp(3.5rem, 7vw, 5rem) 0;
    background: linear-gradient(180deg, #f9fafb 0%, #ffffff 100%);
}
.bsu-related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
}
.bsu-related-card {
    background: #fff;
    border-radius: 18px;
    padding: 1.875rem 1.625rem;
    border: 1px solid #f3f4f6;
    text-decoration: none;
    display: flex;
    align-items: flex-start;
    gap: 1.125rem;
    transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
}
.bsu-related-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 14px 36px rgba(0,0,0,0.09);
    border-color: rgba(59,130,246,0.2);
}
.bsu-related-icon {
    width: 52px; height: 52px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: transform 0.3s;
}
.bsu-related-card:hover .bsu-related-icon { transform: scale(1.1) rotate(-5deg); }
.bsu-rel-green  { background: rgba(16,185,129,0.1);  color: #10b981; }
.bsu-rel-orange { background: rgba(243,139,42,0.1);  color: var(--color-accent); }
.bsu-rel-blue   { background: rgba(59,130,246,0.08); color: #3b82f6; }
.bsu-related-icon svg { width: 24px; height: 24px; }
.bsu-related-body h3 { font-size: 1rem; font-weight: 700; color: var(--color-primary); margin-bottom: 0.375rem; }
.bsu-related-body p { font-size: 0.83rem; color: #6b7280; line-height: 1.6; margin-bottom: 0.75rem; }
.bsu-related-link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.82rem;
    font-weight: 700;
    color: #3b82f6;
    transition: gap 0.2s;
}
.bsu-related-card:hover .bsu-related-link { gap: 8px; }
.bsu-related-link svg { width: 14px; height: 14px; }

/* ── RESPONSIVE ──────────────────────────────────────────── */
@media (max-width: 1100px) {
    .bsu-hero-grid { grid-template-columns: 1fr 360px; }
    .bsu-standards-grid { grid-template-columns: repeat(2, 1fr); }
    .bsu-cta-inner { grid-template-columns: 1fr; gap: 2rem; }
    .bsu-cta-actions { flex-direction: row; flex-wrap: wrap; min-width: auto; }
    .bsu-cta-trust { flex-basis: 100%; }
}
@media (max-width: 900px) {
    .bsu-hero-grid,
    .bsu-why-grid,
    .bsu-upgrades-grid { grid-template-columns: 1fr; gap: 2.5rem; }
    .bsu-older-grid { display: flex; flex-direction: column-reverse; gap: 2.5rem; }
    .bsu-signs-grid { grid-template-columns: repeat(2, 1fr); }
    .bsu-trust-grid { grid-template-columns: repeat(2, 1fr); }
    .bsu-related-grid { grid-template-columns: repeat(2, 1fr); }
    .bsu-process-grid { gap: 0; }
    .bsu-process-connector { width: 24px; }
    .bsu-why-img-placeholder,
    .bsu-upgrades-img-placeholder,
    .bsu-older-img-placeholder {
        position: relative !important;
        top: 0 !important;
        min-height: 280px;
    }
    .bsu-why-visual,
    .bsu-upgrades-visual {
        position: relative !important;
        top: 0 !important;
    }
    .bsu-upgrade-list-2col { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
    .bsu-signs-grid { grid-template-columns: 1fr; }
    .bsu-standards-grid { grid-template-columns: 1fr; }
    .bsu-trust-grid { grid-template-columns: 1fr; }
    .bsu-related-grid { grid-template-columns: 1fr; }
    .bsu-hero-ctas,
    .bsu-cta-actions { flex-direction: column; align-items: stretch; }
    .bsu-btn-primary,
    .bsu-btn-outline,
    .bsu-btn-outline-light { text-align: center; justify-content: center; }
    .bsu-process-step { min-width: 130px; }
}