/* ============================================================
   CyberSentinel — About Page (DARK theme)
   Site umumiy --bg-primary: #050810, color: #f1f5f9 ga moslashtirilgan
   ============================================================ */

:root {
    --cs-primary: #3b82f6;
    --cs-primary-2: #2563eb;
    --cs-secondary: #8b5cf6;
    --cs-accent: #06b6d4;
    --cs-accent-2: #22d3ee;
    --cs-success: #10b981;
    --cs-warning: #f59e0b;
    --cs-danger: #ef4444;

    /* Dark surface scale (uses site theme as base) */
    --cs-bg: transparent;
    --cs-bg-2: #0a0f1f;
    --cs-bg-3: #111729;
    --cs-card: rgba(20, 30, 55, 0.55);
    --cs-card-hover: rgba(30, 41, 70, 0.7);

    /* Light text on dark */
    --cs-text: #f1f5f9;
    --cs-text-2: #cbd5e1;
    --cs-text-muted: #94a3b8;
    --cs-text-dim: #64748b;

    /* Borders, glows */
    --cs-border: rgba(99, 152, 255, 0.12);
    --cs-border-strong: rgba(99, 152, 255, 0.25);
    --cs-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --cs-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
    --cs-shadow-lg: 0 24px 48px rgba(0, 0, 0, 0.5);
    --cs-shadow-glow: 0 0 32px rgba(34, 211, 238, 0.15);

    --cs-gradient: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    --cs-gradient-cyan: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
    --cs-gradient-violet: linear-gradient(135deg, #8b5cf6 0%, #ec4899 100%);
    --cs-gradient-text: linear-gradient(135deg, #22d3ee 0%, #8b5cf6 100%);
}

/* ============================================================
   Hero
   ============================================================ */
.about-hero {
    position: relative;
    background: linear-gradient(135deg, #050810 0%, #0a0f1f 50%, #1a1f3a 100%);
    color: #fff;
    padding: 140px 0 100px;
    overflow: hidden;
    isolation: isolate;
}

.about-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 20% 30%, rgba(139, 92, 246, 0.35) 0, transparent 40%),
        radial-gradient(circle at 80% 60%, rgba(6, 182, 212, 0.30) 0, transparent 40%),
        radial-gradient(circle at 50% 100%, rgba(59, 130, 246, 0.25) 0, transparent 50%);
    z-index: -1;
    animation: cs-bg-pulse 14s ease-in-out infinite alternate;
}

.about-hero::after {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, #000 30%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, #000 30%, transparent 70%);
    z-index: -1;
}

@keyframes cs-bg-pulse {
    0% { transform: scale(1) rotate(0deg); opacity: 1; }
    100% { transform: scale(1.1) rotate(2deg); opacity: 0.85; }
}

.about-hero__inner {
    position: relative;
    text-align: center;
    max-width: 980px;
    margin: 0 auto;
}

.about-hero__badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.06);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.14);
    color: #e0e7ff;
    padding: 0.6rem 1.2rem;
    border-radius: 100px;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 1.75rem;
    letter-spacing: 0.02em;
}
.about-hero__badge i { color: #34d399; font-size: 1rem; }

.about-hero__title {
    font-size: clamp(2.25rem, 5vw, 3.75rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.25rem;
    color: #ffffff;
    letter-spacing: -0.02em;
}

.about-hero__title .highlight {
    background: var(--cs-gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

.about-hero__lead {
    font-size: clamp(1rem, 1.6vw, 1.25rem);
    line-height: 1.7;
    color: #cbd5e1;
    max-width: 760px;
    margin: 0 auto 2.5rem;
}

.about-hero__cta { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: center; margin-bottom: 3rem; }
.about-hero__cta .btn { padding: 0.85rem 1.75rem; font-weight: 600; border-radius: 12px; transition: transform 0.2s ease, box-shadow 0.2s ease; }
.about-hero__cta .btn:hover { transform: translateY(-2px); }
.about-hero__cta .btn-primary {
    background: var(--cs-gradient);
    border: none;
    box-shadow: 0 8px 24px rgba(139, 92, 246, 0.4);
    color: #fff;
}
.about-hero__cta .btn-outline-light {
    border: 1.5px solid rgba(255, 255, 255, 0.35);
    backdrop-filter: blur(8px);
    color: #fff;
    background: rgba(255, 255, 255, 0.04);
}

.about-hero__stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1.5rem;
    max-width: 880px;
    margin: 0 auto;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}
.about-hero__stat { text-align: center; }
.about-hero__stat-value {
    font-size: 2.25rem;
    font-weight: 800;
    line-height: 1;
    background: var(--cs-gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    margin-bottom: 0.4rem;
    letter-spacing: -0.02em;
}
.about-hero__stat-label {
    font-size: 0.825rem;
    color: var(--cs-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 500;
}

/* ============================================================
   Sticky quick nav (dark)
   ============================================================ */
.about-quicknav {
    position: sticky;
    top: 70px;
    z-index: 100;
    background: rgba(10, 15, 31, 0.85);
    backdrop-filter: saturate(180%) blur(16px);
    -webkit-backdrop-filter: saturate(180%) blur(16px);
    border-bottom: 1px solid var(--cs-border);
    padding: 0.75rem 0;
}

.about-quicknav__list {
    display: flex;
    gap: 0.25rem;
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
    padding: 0;
    margin: 0;
    list-style: none;
}
.about-quicknav__list::-webkit-scrollbar { display: none; }

.about-quicknav__link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.55rem 1rem;
    color: var(--cs-text-2);
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: 8px;
    text-decoration: none;
    white-space: nowrap;
    transition: all 0.2s ease;
}
.about-quicknav__link:hover { background: rgba(99, 152, 255, 0.1); color: var(--cs-accent-2); }
.about-quicknav__link i { font-size: 0.875rem; color: var(--cs-accent-2); }

.about-quicknav__link.is-active {
    background: var(--cs-gradient);
    color: #fff !important;
}
.about-quicknav__link.is-active i { color: #fff !important; }

/* ============================================================
   Section base (dark)
   ============================================================ */
.about-section {
    padding: 90px 0;
    position: relative;
    background: transparent;
    color: var(--cs-text);
}

.about-section--alt {
    background: linear-gradient(180deg, rgba(10, 15, 31, 0.4) 0%, rgba(10, 15, 31, 0.7) 100%);
    border-top: 1px solid var(--cs-border);
    border-bottom: 1px solid var(--cs-border);
}

.about-section--dark {
    background: var(--cs-bg-3);
    color: var(--cs-text);
}

.about-section__head { max-width: 760px; margin: 0 auto 3.5rem; text-align: center; }

.about-section__eyebrow {
    display: inline-block;
    font-size: 0.825rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--cs-accent-2);
    margin-bottom: 0.75rem;
}

.about-section__title {
    font-size: clamp(1.75rem, 3.5vw, 2.5rem);
    font-weight: 800;
    line-height: 1.2;
    color: #fff;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.about-section__lead {
    font-size: 1.1rem;
    line-height: 1.7;
    color: var(--cs-text-2);
}

/* ============================================================
   Mission
   ============================================================ */
.about-mission__grid {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-mission__text h2 {
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    font-weight: 800;
    line-height: 1.2;
    color: #fff;
    margin-bottom: 1.25rem;
    letter-spacing: -0.02em;
}

.about-mission__text p {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--cs-text-2);
    margin-bottom: 1rem;
}

.about-mission__chips { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1.5rem; }

.about-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.45rem 0.9rem;
    background: rgba(59, 130, 246, 0.12);
    color: var(--cs-accent-2);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 100px;
    font-size: 0.825rem;
    font-weight: 500;
}
.about-chip i { font-size: 0.75rem; color: var(--cs-success); }

.about-mission__visual {
    position: relative;
    aspect-ratio: 1 / 1;
    max-width: 460px;
    margin: 0 auto;
}

.about-mission__visual-card {
    position: absolute;
    background: var(--cs-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--cs-border-strong);
    border-radius: 16px;
    box-shadow: var(--cs-shadow-lg);
    padding: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--cs-text);
}

.about-mission__visual-card i {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.about-mission__visual-card .label {
    font-size: 0.75rem;
    color: var(--cs-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 500;
}

.about-mission__visual-card .value {
    font-size: 1.05rem;
    font-weight: 700;
    color: #fff;
}

.about-mission__visual-card.card-1 { top: 5%; left: 0; animation: float 6s ease-in-out infinite; }
.about-mission__visual-card.card-2 { top: 35%; right: 0; animation: float 6s ease-in-out infinite 1.5s; }
.about-mission__visual-card.card-3 { bottom: 8%; left: 12%; animation: float 6s ease-in-out infinite 3s; }
.about-mission__visual-card.card-1 i { background: var(--cs-gradient); }
.about-mission__visual-card.card-2 i { background: var(--cs-gradient-cyan); }
.about-mission__visual-card.card-3 i { background: var(--cs-gradient-violet); }

.about-mission__visual-orb {
    position: absolute;
    inset: 18%;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, #a78bfa, #2563eb);
    opacity: 0.18;
    filter: blur(40px);
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

/* ============================================================
   Architecture (dark stack)
   ============================================================ */
.about-arch {
    background: linear-gradient(180deg, #050810 0%, #0a0f1f 100%);
    color: var(--cs-text);
    border-top: 1px solid var(--cs-border);
    border-bottom: 1px solid var(--cs-border);
}

.about-arch__diagram {
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

.about-arch__layer {
    background: var(--cs-card);
    border: 1px solid var(--cs-border);
    border-radius: 16px;
    padding: 1.5rem;
    backdrop-filter: blur(8px);
    transition: all 0.3s ease;
    position: relative;
}

.about-arch__layer:hover {
    background: var(--cs-card-hover);
    border-color: rgba(167, 139, 250, 0.4);
    transform: translateX(8px);
}

.about-arch__layer-head {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.about-arch__layer-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: var(--cs-gradient);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.4rem;
    flex-shrink: 0;
    box-shadow: 0 8px 24px rgba(59, 130, 246, 0.3);
}

.about-arch__layer:nth-child(2) .about-arch__layer-icon { background: var(--cs-gradient-cyan); }
.about-arch__layer:nth-child(3) .about-arch__layer-icon { background: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%); }
.about-arch__layer:nth-child(4) .about-arch__layer-icon { background: linear-gradient(135deg, #10b981 0%, #06b6d4 100%); }
.about-arch__layer:nth-child(5) .about-arch__layer-icon { background: var(--cs-gradient-violet); }

.about-arch__layer-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: #fff;
    margin: 0;
}

.about-arch__layer-num {
    margin-left: auto;
    font-family: 'SF Mono', 'Menlo', monospace;
    font-size: 0.75rem;
    color: var(--cs-accent-2);
    background: rgba(34, 211, 238, 0.1);
    padding: 0.25rem 0.6rem;
    border-radius: 6px;
    letter-spacing: 0.05em;
    border: 1px solid rgba(34, 211, 238, 0.2);
}

.about-arch__layer-desc {
    color: var(--cs-text-2);
    line-height: 1.7;
    margin: 0 0 1rem 0;
    padding-left: calc(56px + 1rem);
}

.about-arch__layer-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    padding-left: calc(56px + 1rem);
}

.about-arch__tag {
    font-size: 0.75rem;
    padding: 0.3rem 0.65rem;
    background: rgba(255, 255, 255, 0.06);
    color: var(--cs-text-2);
    border-radius: 6px;
    font-family: 'SF Mono', 'Menlo', monospace;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

/* ============================================================
   How It Works
   ============================================================ */
.about-howto__timeline {
    position: relative;
    max-width: 920px;
    margin: 0 auto;
}

.about-howto__timeline::before {
    content: "";
    position: absolute;
    left: 32px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--cs-primary), var(--cs-secondary), var(--cs-accent));
    opacity: 0.4;
}

.about-howto__step {
    position: relative;
    padding-left: 92px;
    padding-bottom: 2.5rem;
}

.about-howto__step:last-child { padding-bottom: 0; }

.about-howto__step-num {
    position: absolute;
    left: 0;
    top: 0;
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--cs-bg-3);
    border: 2px solid var(--cs-primary);
    color: var(--cs-accent-2);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.5rem;
    box-shadow: 0 0 0 6px rgba(59, 130, 246, 0.12);
}

.about-howto__step-card {
    background: var(--cs-card);
    backdrop-filter: blur(8px);
    border: 1px solid var(--cs-border);
    border-radius: 14px;
    padding: 1.5rem 1.75rem;
    box-shadow: var(--cs-shadow-sm);
    transition: all 0.25s ease;
}

.about-howto__step-card:hover {
    background: var(--cs-card-hover);
    box-shadow: var(--cs-shadow);
    border-color: var(--cs-border-strong);
}

.about-howto__step-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}
.about-howto__step-title i { color: var(--cs-accent-2); font-size: 1rem; }

.about-howto__step-desc {
    color: var(--cs-text-2);
    line-height: 1.7;
    margin: 0;
}

.about-howto__step-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px dashed var(--cs-border);
    font-size: 0.825rem;
    color: var(--cs-text-muted);
}

.about-howto__step-meta span { display: inline-flex; align-items: center; gap: 0.35rem; }
.about-howto__step-meta i { color: var(--cs-success); }

/* ============================================================
   Feature cards
   ============================================================ */
.about-features__grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
    gap: 1.5rem;
}

.about-feature {
    background: var(--cs-card);
    backdrop-filter: blur(8px);
    border: 1px solid var(--cs-border);
    border-radius: 14px;
    padding: 1.75rem;
    transition: all 0.25s ease;
    position: relative;
    overflow: hidden;
    color: var(--cs-text);
}

.about-feature::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.08), rgba(139, 92, 246, 0.08));
    opacity: 0;
    transition: opacity 0.25s ease;
    pointer-events: none;
}

.about-feature:hover {
    border-color: var(--cs-border-strong);
    transform: translateY(-4px);
    box-shadow: var(--cs-shadow), var(--cs-shadow-glow);
    background: var(--cs-card-hover);
}

.about-feature:hover::before { opacity: 1; }

.about-feature__icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: rgba(59, 130, 246, 0.15);
    color: var(--cs-accent-2);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
    border: 1px solid rgba(59, 130, 246, 0.25);
}

.about-feature--client .about-feature__icon {
    background: rgba(6, 182, 212, 0.15);
    color: var(--cs-accent-2);
    border-color: rgba(6, 182, 212, 0.3);
}

.about-feature__title {
    font-size: 1.1rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 0.6rem;
    position: relative;
    z-index: 1;
}

.about-feature__desc {
    color: var(--cs-text-2);
    font-size: 0.925rem;
    line-height: 1.7;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.about-feature__list {
    list-style: none;
    padding: 0;
    margin: 0;
    position: relative;
    z-index: 1;
}

.about-feature__list li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--cs-text-2);
    font-size: 0.875rem;
    line-height: 1.6;
}

.about-feature__list li::before {
    content: "\f00c";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    position: absolute;
    left: 0;
    top: 2px;
    color: var(--cs-success);
    font-size: 0.75rem;
}

/* ============================================================
   Tech stack
   ============================================================ */
.about-tech__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
}

.about-tech__category {
    background: var(--cs-card);
    backdrop-filter: blur(8px);
    border: 1px solid var(--cs-border);
    border-radius: 14px;
    padding: 1.75rem;
    transition: all 0.25s ease;
}

.about-tech__category:hover {
    transform: translateY(-3px);
    box-shadow: var(--cs-shadow);
    border-color: var(--cs-border-strong);
    background: var(--cs-card-hover);
}

.about-tech__category-head {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.25rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--cs-border);
}

.about-tech__category-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: var(--cs-gradient);
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
}

.about-tech__category:nth-child(2n) .about-tech__category-icon { background: var(--cs-gradient-cyan); }
.about-tech__category:nth-child(3n) .about-tech__category-icon { background: var(--cs-gradient-violet); }
.about-tech__category:nth-child(4n) .about-tech__category-icon { background: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%); }

.about-tech__category-title {
    font-size: 1rem;
    font-weight: 700;
    color: #fff;
    margin: 0;
}

.about-tech__items {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.about-tech__item {
    background: rgba(255, 255, 255, 0.04);
    color: var(--cs-text-2);
    border-radius: 8px;
    padding: 0.45rem 0.85rem;
    font-size: 0.8125rem;
    font-weight: 600;
    font-family: 'SF Mono', 'Menlo', monospace;
    border: 1px solid var(--cs-border);
    transition: all 0.2s ease;
}

.about-tech__item:hover {
    background: var(--cs-primary);
    color: #fff;
    border-color: var(--cs-primary);
    transform: scale(1.05);
}

/* ============================================================
   Use Cases
   ============================================================ */
.about-usecase__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.25rem;
}

.about-usecase {
    position: relative;
    border-radius: 16px;
    padding: 1.75rem;
    color: #fff;
    overflow: hidden;
    isolation: isolate;
    min-height: 220px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
    border: 1px solid var(--cs-border-strong);
}

.about-usecase:hover {
    transform: translateY(-4px);
    box-shadow: var(--cs-shadow-lg);
}

.about-usecase::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -2;
}

.about-usecase::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 30%, rgba(0,0,0,0.6) 100%);
    z-index: -1;
}

.about-usecase--corporate::before { background: linear-gradient(135deg, #1e3a8a, #2563eb); }
.about-usecase--education::before { background: linear-gradient(135deg, #065f46, #10b981); }
.about-usecase--gov::before       { background: linear-gradient(135deg, #7c2d12, #ea580c); }
.about-usecase--healthcare::before{ background: linear-gradient(135deg, #831843, #db2777); }
.about-usecase--finance::before   { background: linear-gradient(135deg, #4c1d95, #7c3aed); }
.about-usecase--telecom::before   { background: linear-gradient(135deg, #134e4a, #06b6d4); }

.about-usecase__icon {
    font-size: 2rem;
    opacity: 0.95;
    margin-bottom: auto;
    color: #fff;
}

.about-usecase__title {
    font-size: 1.15rem;
    font-weight: 700;
    margin: 0 0 0.4rem 0;
    color: #fff;
}

.about-usecase__desc {
    font-size: 0.875rem;
    line-height: 1.6;
    opacity: 0.95;
    margin: 0;
    color: #f1f5f9;
}

/* ============================================================
   Research
   ============================================================ */
.about-research__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.about-research__card {
    background: var(--cs-card);
    backdrop-filter: blur(8px);
    border: 1px solid var(--cs-border);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: var(--cs-shadow-sm);
}

.about-research__card-head { display: flex; align-items: center; gap: 1rem; margin-bottom: 1.5rem; }

.about-research__card-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: var(--cs-gradient);
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
}

.about-research__card-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: #fff;
    margin: 0;
}

.about-research__card-subtitle {
    font-size: 0.875rem;
    color: var(--cs-text-muted);
    margin: 0.15rem 0 0 0;
}

.about-research__list { list-style: none; padding: 0; margin: 0; }

.about-research__list li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--cs-border);
    color: var(--cs-text-2);
    line-height: 1.6;
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
}

.about-research__list li:last-child { border-bottom: none; }

.about-research__list li i {
    color: var(--cs-success);
    margin-top: 4px;
    flex-shrink: 0;
}

.about-research__metrics {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.about-research__metric {
    background: var(--cs-card);
    backdrop-filter: blur(8px);
    border: 1px solid var(--cs-border-strong);
    border-radius: 12px;
    padding: 1.25rem;
    text-align: center;
}

.about-research__metric-value {
    font-size: 2.25rem;
    font-weight: 800;
    background: var(--cs-gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    line-height: 1;
    margin-bottom: 0.4rem;
}

.about-research__metric-label {
    font-size: 0.875rem;
    color: var(--cs-text-2);
    font-weight: 500;
}

.about-research__quote {
    margin-top: 2rem;
    padding: 1.5rem;
    background: rgba(59, 130, 246, 0.08);
    border-left: 4px solid var(--cs-primary);
    border-radius: 8px;
    color: var(--cs-text);
}

.about-research__quote p {
    margin: 0;
    color: var(--cs-text-2);
    font-style: italic;
    line-height: 1.7;
}

.about-research__quote a {
    display: inline-block;
    margin-top: 1rem;
    color: var(--cs-accent-2);
    font-weight: 600;
    text-decoration: none;
}

.about-research__quote a:hover { color: var(--cs-primary); }

/* ============================================================
   Performance bars
   ============================================================ */
.about-perf__list { max-width: 760px; margin: 0 auto; }

.about-perf__row { margin-bottom: 1.75rem; }

.about-perf__head { display: flex; justify-content: space-between; margin-bottom: 0.6rem; }

.about-perf__name {
    font-weight: 600;
    color: var(--cs-text);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.about-perf__name i { color: var(--cs-accent-2); }

.about-perf__value {
    font-weight: 700;
    color: var(--cs-accent-2);
    font-family: 'SF Mono', 'Menlo', monospace;
}

.about-perf__bar {
    height: 8px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 100px;
    overflow: hidden;
    border: 1px solid var(--cs-border);
}

.about-perf__bar-fill {
    height: 100%;
    border-radius: 100px;
    background: var(--cs-gradient);
    transition: width 1.4s cubic-bezier(0.22, 1, 0.36, 1);
    width: 0;
}

/* ============================================================
   FAQ
   ============================================================ */
.about-faq { max-width: 820px; margin: 0 auto; }

.about-faq__item {
    background: var(--cs-card);
    backdrop-filter: blur(8px);
    border: 1px solid var(--cs-border);
    border-radius: 12px;
    margin-bottom: 0.85rem;
    overflow: hidden;
    transition: all 0.2s ease;
}

.about-faq__item[open] {
    border-color: var(--cs-border-strong);
    background: var(--cs-card-hover);
    box-shadow: var(--cs-shadow-sm);
}

.about-faq__q {
    padding: 1.15rem 1.5rem;
    cursor: pointer;
    font-weight: 600;
    color: #fff;
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    user-select: none;
}

.about-faq__q::-webkit-details-marker { display: none; }

.about-faq__q::after {
    content: "\f078";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    color: var(--cs-accent-2);
    font-size: 0.875rem;
    transition: transform 0.25s ease;
    flex-shrink: 0;
}

.about-faq__item[open] .about-faq__q::after { transform: rotate(180deg); }

.about-faq__a {
    padding: 0 1.5rem 1.25rem;
    color: var(--cs-text-2);
    line-height: 1.75;
    border-top: 1px dashed var(--cs-border);
    padding-top: 1rem;
    margin-top: 0.5rem;
}

/* ============================================================
   CTA
   ============================================================ */
.about-cta {
    position: relative;
    padding: 100px 0;
    background: linear-gradient(135deg, #1e3a8a 0%, #4c1d95 100%);
    color: #fff;
    text-align: center;
    overflow: hidden;
    isolation: isolate;
}

.about-cta::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 0% 0%, rgba(6, 182, 212, 0.4) 0, transparent 40%),
        radial-gradient(circle at 100% 100%, rgba(236, 72, 153, 0.3) 0, transparent 40%);
    z-index: -1;
}

.about-cta__title {
    font-size: clamp(1.75rem, 3.5vw, 2.5rem);
    font-weight: 800;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
    color: #fff;
}

.about-cta__lead {
    font-size: 1.1rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.92);
    max-width: 640px;
    margin: 0 auto 2.5rem;
}

.about-cta__buttons { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: center; }
.about-cta__buttons .btn { padding: 0.9rem 1.85rem; font-weight: 600; border-radius: 12px; transition: transform 0.2s ease; }
.about-cta__buttons .btn:hover { transform: translateY(-2px); }
.about-cta__buttons .btn-light { background: #fff; color: var(--cs-primary-2); border: none; }
.about-cta__buttons .btn-outline-light {
    border: 1.5px solid rgba(255, 255, 255, 0.5);
    color: #fff;
    background: transparent;
}
.about-cta__buttons .btn-outline-light:hover { background: rgba(255, 255, 255, 0.1); }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 991.98px) {
    .about-mission__grid { grid-template-columns: 1fr; gap: 3rem; }
    .about-research__grid { grid-template-columns: 1fr; gap: 2rem; }
    .about-mission__visual { max-width: 360px; }
    .about-arch__layer-desc,
    .about-arch__layer-tags { padding-left: 0; margin-top: 0.5rem; }
}

@media (max-width: 767.98px) {
    .about-hero { padding: 110px 0 70px; }
    .about-section { padding: 60px 0; }
    .about-quicknav { top: 60px; }
    .about-howto__step { padding-left: 70px; }
    .about-howto__timeline::before { left: 24px; }
    .about-howto__step-num { width: 48px; height: 48px; font-size: 1.15rem; }
    .about-research__metrics { grid-template-columns: 1fr 1fr; }
    .about-cta { padding: 70px 0; }
}

@media (max-width: 480px) {
    .about-hero__stats { grid-template-columns: 1fr 1fr; }
    .about-research__metrics { grid-template-columns: 1fr; }
}

/* Smooth scroll */
html { scroll-behavior: smooth; scroll-padding-top: 140px; }

/* Reveal-on-scroll */
.cs-reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}
.cs-reveal.is-revealed { opacity: 1; transform: translateY(0); }