/* ========================= */
/*   Hero Section (Canvas)   */
/* ========================= */

.hero-section {
    position: relative;
    width: 100%;
    height: 100vh;
    overflow: hidden;
    background: #060608;
    padding-top: 0 !important;
    flex: none !important;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    display: block;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
    width: 100%;
    max-width: 100%;
    padding: 0 1.25rem;
    box-sizing: border-box;
}

.hero-eyebrow {
    color: rgba(255, 255, 255, 0.82);
    font-size: 1.05rem;
    font-weight: 400;
    letter-spacing: 0.04em;
    margin: 0;
}

.hero-data-svg {
    width: min(88vw, 740px);
    height: auto;
    display: block;
    max-width: 100%;
}

.hero-main-copy {
    margin: -0.6rem 0 0;
    font-size: clamp(1.4rem, 2.5vw, 2.2rem);
    font-weight: 700;
    line-height: 1.4;
    letter-spacing: -0.02em;
    color: rgba(255, 255, 255, 0.92);
    text-align: center;
    text-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    max-width: 22ch;
    word-break: keep-all;
    overflow-wrap: anywhere;
}

@keyframes btnElegantAppear {
    0% {
        opacity: 0;
        filter: blur(12px);
        transform: translateY(20px) scale(0.95);
    }
    100% {
        opacity: 1;
        filter: blur(0px);
        transform: translateY(0px) scale(1);
    }
}

@keyframes btnShimmer {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.hero-inquiry-btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(10, 10, 14, 0.65);
    color: rgba(255, 255, 255, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 50px;
    padding: 0.9rem 3.2rem;
    font-size: 1.05rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-decoration: none;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.1);
    transition: all 0.4s cubic-bezier(0.25, 1, 0.5, 1);
    animation: btnElegantAppear 1.5s cubic-bezier(0.2, 0.8, 0.2, 1) 0.8s both;
    overflow: hidden;
    z-index: 10;
}

.hero-inquiry-btn::before {
    content: '';
    position: absolute;
    top: -2px; left: -2px; right: -2px; bottom: -2px;
    background: linear-gradient(90deg, rgba(0,255,213,0.3), rgba(42,117,211,0.3), rgba(138,43,226,0.3), rgba(0,255,213,0.3));
    background-size: 300% 100%;
    border-radius: 50px;
    z-index: -1;
    opacity: 0;
    transition: opacity 0.4s ease;
    animation: btnShimmer 4s linear infinite;
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask-composite: exclude;
    -webkit-mask-composite: xor;
    padding: 2px;
}

.hero-inquiry-btn::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: radial-gradient(circle at center, rgba(255,255,255,0.1) 0%, transparent 60%);
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: 0;
    pointer-events: none;
}

.hero-inquiry-btn span {
    position: relative;
    z-index: 2;
}

.hero-inquiry-btn:hover {
    background: rgba(18, 18, 26, 0.85);
    color: #ffffff;
    transform: perspective(800px) translateZ(16px) translateY(-3px);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.6), 0 0 20px rgba(42, 117, 211, 0.2);
    border-color: rgba(255, 255, 255, 0.2);
}

.hero-inquiry-btn:hover::before,
.hero-inquiry-btn:hover::after {
    opacity: 1;
}

@media (max-width: 768px) {
    .hero-data-svg {
        width: min(92vw, 560px);
    }
    .hero-data-svg text {
        font-size: 144px;
        letter-spacing: 4px;
    }
    .hero-eyebrow {
        font-size: 0.84rem;
        letter-spacing: 0.12em;
        text-align: center;
    }
    .hero-content {
        gap: 1.15rem;
        padding: 0 0.9rem;
    }
    .hero-main-copy {
        margin-top: -0.1rem;
        font-size: 1.08rem;
        line-height: 1.45;
        max-width: 16ch;
        padding: 0;
    }
    .hero-inquiry-btn {
        width: min(100%, 260px);
        padding: 0.85rem 1.4rem;
        font-size: 0.96rem;
    }
}

/* ========================= */
/*   다크 바디 / 공통          */
/* ========================= */

.dark-body {
    background: #07070f;
    color: #e2e8f0;
}

/* 다크 테마 헤더 오버라이드 */
.dark-body header {
    background: rgba(7, 7, 15, 0.55);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
    box-shadow: none;
}

.dark-body .main-nav a,
.dark-body .dropbtn {
    color: rgba(255, 255, 255, 0.85);
}

.dark-body .main-nav a:hover,
.dark-body .dropbtn:hover {
    color: #818cf8;
}

.dark-body .dropdown-content {
    background-color: #0f0f1a;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.dark-body .dropdown-content a {
    color: rgba(255, 255, 255, 0.8);
}

.dark-body .dropdown-content a:hover {
    background-color: rgba(99, 102, 241, 0.12);
    color: #818cf8;
}

/* 다크 섹션들 flex 해제 */
.about-section,
.expertise-section,
.industries-section,
.process-section,
.references-section,
.cta-section {
    flex: none !important;
}

/* ========================= */
/*   히어로 서브텍스트         */
/* ========================= */

.hero-sub {
    color: rgba(255,255,255,0.7);
    font-size: 1rem;
    margin-bottom: 2.5rem;
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* ========================= */
/*   히어로 컨테이너         */
/* ========================= */

/* 반응형 디자인 */
@media (max-width: 1024px) {
    .hero-container {
        flex-direction: column;
        text-align: center;
        gap: 3rem;
    }
    
    .stats-floating {
        position: static;
        flex-direction: row;
        justify-content: center;
        margin-top: 2rem;
    }
}

@media (max-width: 768px) {
    .hero-container {
        padding: 0 1rem;
    }
    
    .hero-features {
        gap: 1rem;
    }
    
    .feature-item {
        padding: 0.8rem;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .cta-primary,
    .cta-secondary {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
    
    .stats-floating {
        flex-direction: column;
        align-items: center;
    }
    
    .floating-element {
        display: none;
    }
}

/* ========================= */
/*   공통 섹션 레이아웃        */
/* ========================= */

.about-section,
.process-section {
    padding: 110px 0;
    background: #07070f;
    border-top: 1px solid rgba(255,255,255,0.04);
}

.industries-section {
    padding: 110px 0;
    background: linear-gradient(180deg, #08081a 0%, #0b0b16 50%, #08081a 100%);
    border-top: 1px solid rgba(255,255,255,0.04);
}

.cta-section {
    padding: 130px 0;
    background: #07070f;
    border-top: 1px solid rgba(255,255,255,0.04);
    position: relative;
    overflow: hidden;
}

.about-container,
.industries-container,
.process-container,
.cta-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    text-align: center;
    position: relative;
}

.about-label {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: rgba(129,140,248,0.9);
    background: rgba(99,102,241,0.08);
    border: 1px solid rgba(129,140,248,0.25);
    border-radius: 50px;
    padding: 0.35rem 1.2rem;
    margin-bottom: 2rem;
    backdrop-filter: blur(8px);
}

/* ========================= */
/*   About 섹션               */
/* ========================= */

.about-title {
    font-size: clamp(2rem, 4vw, 3.4rem);
    font-weight: 700;
    line-height: 1.25;
    color: #f1f5f9;
    margin-bottom: 1.6rem;
    letter-spacing: -0.02em;
}

.about-desc {
    font-size: 1.05rem;
    color: #7d8fa8;
    line-height: 1.9;
    margin-bottom: 4.5rem;
    max-width: 660px;
    margin-left: auto;
    margin-right: auto;
}

.about-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    text-align: left;
}

.about-card {
    background: rgba(255,255,255,0.025);
    border: 1px solid rgba(255,255,255,0.07);
    border-top: 1px solid rgba(129,140,248,0.25);
    border-radius: 20px;
    padding: 2.5rem 2rem;
    text-align: left;
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 0.7s ease, transform 0.7s ease, border-color 0.35s, box-shadow 0.35s, background 0.35s;
    position: relative;
    overflow: hidden;
}

.about-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(129,140,248,0.6), transparent);
    opacity: 0;
    transition: opacity 0.35s ease;
}

.about-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.about-card:hover {
    background: rgba(99,102,241,0.06);
    border-color: rgba(129,140,248,0.3);
    border-top-color: rgba(129,140,248,0.5);
    transform: translateY(-8px);
    box-shadow: 0 20px 50px rgba(99,102,241,0.12);
}

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

.about-card-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: rgba(99,102,241,0.12);
    border: 1px solid rgba(129,140,248,0.2);
    border-radius: 14px;
    color: #a5b4fc;
    margin-bottom: 1.4rem;
}

.about-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #e2e8f0;
    margin-bottom: 0.75rem;
    letter-spacing: -0.01em;
}

.about-card p {
    font-size: 0.92rem;
    color: #566070;
    line-height: 1.75;
}

/* ========================= */
/*   Expertise 섹션           */
/* ========================= */

.expertise-section {
    padding: 110px 0;
    background: #07070f;
    border-top: 1px solid rgba(255,255,255,0.04);
}

.expertise-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    text-align: center;
    position: relative;
}

.expertise-title {
    font-size: clamp(2rem, 4vw, 3.4rem);
    font-weight: 700;
    line-height: 1.25;
    color: #f1f5f9;
    margin-bottom: 1.2rem;
    letter-spacing: -0.02em;
}

.expertise-desc {
    font-size: 1.05rem;
    color: #566070;
    line-height: 1.85;
    margin-bottom: 4rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    text-align: left;
}

.expertise-card {
    position: relative;
    border-radius: 28px;
    padding: 3rem;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.4s cubic-bezier(0.25,1,0.5,1), box-shadow 0.4s;
    border: 1px solid rgba(255,255,255,0.06);
}

.expertise-card:hover { transform: translateY(-10px); }

.expertise-card--agent {
    background: linear-gradient(135deg, rgba(6,182,212,0.06) 0%, rgba(8,145,178,0.03) 50%, rgba(7,7,15,0.9) 100%);
}
.expertise-card--agent:hover {
    box-shadow: 0 30px 80px rgba(6,182,212,0.12), 0 0 50px rgba(6,182,212,0.06);
    border-color: rgba(6,182,212,0.2);
}

.expertise-card--chatbot {
    background: linear-gradient(135deg, rgba(139,92,246,0.07) 0%, rgba(99,102,241,0.04) 50%, rgba(7,7,15,0.9) 100%);
}
.expertise-card--chatbot:hover {
    box-shadow: 0 30px 80px rgba(139,92,246,0.12), 0 0 50px rgba(99,102,241,0.06);
    border-color: rgba(139,92,246,0.2);
}

.expertise-glow {
    position: absolute;
    top: -60px; right: -60px;
    width: 240px; height: 240px;
    border-radius: 50%;
    pointer-events: none;
    opacity: 0.3;
    filter: blur(60px);
    transition: opacity 0.4s;
}
.expertise-card:hover .expertise-glow { opacity: 0.5; }
.expertise-glow--agent   { background: radial-gradient(circle, rgba(6,182,212,0.7), transparent 70%); }
.expertise-glow--chatbot { background: radial-gradient(circle, rgba(139,92,246,0.7), transparent 70%); }

.expertise-card-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.expertise-icon {
    width: 54px;
    height: 54px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: box-shadow 0.4s;
}
.expertise-icon--agent {
    background: rgba(6,182,212,0.1);
    border: 1px solid rgba(6,182,212,0.25);
    color: #22d3ee;
}
.expertise-icon--chatbot {
    background: rgba(139,92,246,0.1);
    border: 1px solid rgba(139,92,246,0.25);
    color: #a78bfa;
}
.expertise-card:hover .expertise-icon--agent   { box-shadow: 0 0 24px rgba(6,182,212,0.35); }
.expertise-card:hover .expertise-icon--chatbot { box-shadow: 0 0 24px rgba(139,92,246,0.35); }

.expertise-badge {
    font-size: 0.65rem;
    font-weight: 800;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    border-radius: 50px;
    padding: 0.3rem 0.9rem;
}
.expertise-badge--agent {
    color: rgba(34,211,238,0.8);
    background: rgba(6,182,212,0.1);
    border: 1px solid rgba(6,182,212,0.2);
}
.expertise-badge--chatbot {
    color: rgba(167,139,250,0.9);
    background: rgba(139,92,246,0.1);
    border: 1px solid rgba(139,92,246,0.2);
}

.expertise-card h3 {
    font-size: 1.65rem;
    font-weight: 700;
    color: #f1f5f9;
    margin-bottom: 1.1rem;
    letter-spacing: -0.025em;
    line-height: 1.3;
}

.expertise-card > p {
    font-size: 0.95rem;
    color: #566070;
    line-height: 1.85;
    margin-bottom: 2rem;
}

.expertise-features {
    list-style: none;
    padding: 0;
    margin: 0 0 2.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    flex: 1;
}

.expertise-features li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.95rem;
    color: #94a3b8;
    font-weight: 500;
}

.ef-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    flex-shrink: 0;
}
.ef-dot--agent   { background: #22d3ee; box-shadow: 0 0 8px rgba(6,182,212,0.6); }
.ef-dot--chatbot { background: #a78bfa; box-shadow: 0 0 8px rgba(139,92,246,0.6); }

.expertise-card-footer {
    padding-top: 1.8rem;
    border-top: 1px solid rgba(255,255,255,0.06);
    margin-top: auto;
}

.expertise-stat {
    font-size: 0.88rem;
    color: #475569;
}
.expertise-stat strong {
    font-weight: 700;
    color: #e2e8f0;
}

/* ========================= */
/*   Industries 섹션          */
/* ========================= */

.title-accent {
    background: linear-gradient(90deg, #818cf8, #a78bfa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.industries-title {
    font-size: clamp(2rem, 4vw, 3.4rem);
    font-weight: 700;
    line-height: 1.25;
    color: #f1f5f9;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.industries-subtitle {
    font-size: 1rem;
    color: #566070;
    line-height: 1.8;
    margin-bottom: 4rem;
}

.industries-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.industry-card {
    position: relative;
    background: rgba(12, 12, 24, 0.7);
    border: 1px solid rgba(255,255,255,0.07);
    border-radius: 24px;
    padding: 2.8rem 2.8rem 2.4rem;
    text-align: left;
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 0.7s ease, transform 0.7s ease, border-color 0.4s, box-shadow 0.4s;
    overflow: hidden;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    min-height: 280px;
    display: flex;
    flex-direction: column;
}

.industry-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 24px;
    padding: 1px;
    background: linear-gradient(135deg, rgba(129,140,248,0.25) 0%, transparent 50%, rgba(167,139,250,0.1) 100%);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
    opacity: 0.8;
    transition: opacity 0.4s ease;
}

.industry-card::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, rgba(129,140,248,0.7) 40%, rgba(167,139,250,0.5) 70%, transparent 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.industry-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.industry-card:hover {
    border-color: rgba(99,102,241,0.2);
    transform: translateY(-10px);
    box-shadow:
        0 30px 70px rgba(0,0,0,0.4),
        0 0 40px rgba(99,102,241,0.1),
        inset 0 1px 0 rgba(255,255,255,0.06);
}

.industry-card:hover::before { opacity: 1; }
.industry-card:hover::after  { opacity: 1; }

.industry-card-bg-num {
    position: absolute;
    bottom: -0.5rem;
    right: 1.5rem;
    font-size: 9rem;
    font-weight: 900;
    line-height: 1;
    letter-spacing: -0.05em;
    color: transparent;
    -webkit-text-stroke: 1px rgba(99,102,241,0.08);
    user-select: none;
    pointer-events: none;
    transition: -webkit-text-stroke 0.4s ease;
}

.industry-card:hover .industry-card-bg-num {
    -webkit-text-stroke: 1px rgba(129,140,248,0.15);
}

.industry-card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 2rem;
}

.industry-icon-wrap {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(99,102,241,0.1);
    border: 1px solid rgba(129,140,248,0.2);
    border-radius: 16px;
    color: #a5b4fc;
    padding: 10px;
    transition: background 0.4s, box-shadow 0.4s;
}

.industry-card:hover .industry-icon-wrap {
    background: rgba(99,102,241,0.18);
    box-shadow: 0 0 20px rgba(99,102,241,0.25);
}

.industry-icon-wrap svg {
    width: 100%;
    height: 100%;
}

.industry-number {
    font-size: 0.68rem;
    font-weight: 800;
    letter-spacing: 0.2em;
    color: rgba(99,102,241,0.4);
    text-transform: uppercase;
    transition: color 0.4s;
}

.industry-card:hover .industry-number {
    color: rgba(129,140,248,0.7);
}

.industry-card h3 {
    font-size: 1.35rem;
    font-weight: 700;
    color: #e2e8f0;
    margin-bottom: 0.9rem;
    letter-spacing: -0.02em;
    line-height: 1.3;
}

.industry-card p {
    font-size: 0.92rem;
    color: #4a5568;
    line-height: 1.8;
    margin-bottom: auto;
    padding-bottom: 1.8rem;
    flex: 1;
}

.industry-tags {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255,255,255,0.05);
}

.industry-tags li {
    font-size: 0.7rem;
    font-weight: 600;
    color: rgba(129,140,248,0.75);
    background: rgba(99,102,241,0.08);
    border: 1px solid rgba(99,102,241,0.16);
    border-radius: 50px;
    padding: 0.3rem 0.85rem;
    letter-spacing: 0.03em;
    transition: background 0.3s, color 0.3s, border-color 0.3s;
}

.industry-card:hover .industry-tags li {
    background: rgba(99,102,241,0.13);
    color: rgba(165,180,252,0.9);
    border-color: rgba(99,102,241,0.25);
}

/* ========================= */
/*   Process 섹션             */
/* ========================= */

.process-title {
    font-size: clamp(2rem, 4vw, 3.4rem);
    font-weight: 700;
    line-height: 1.25;
    color: #f1f5f9;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.process-lead {
    max-width: 920px;
    margin: 0 auto 2.2rem;
    font-size: 1.04rem;
    line-height: 1.9;
    color: #94a3b8;
}

.process-highlights {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
    margin: 0 0 4.5rem;
}

.process-highlight {
    text-align: left;
    padding: 1.4rem 1.5rem;
    border-radius: 22px;
    background: linear-gradient(180deg, rgba(17, 24, 39, 0.88), rgba(10, 14, 24, 0.92));
    border: 1px solid rgba(99,102,241,0.16);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.04);
}

.process-highlight-label {
    display: inline-block;
    margin-bottom: 0.7rem;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: #a5b4fc;
}

.process-highlight strong {
    display: block;
    font-size: 1rem;
    line-height: 1.65;
    color: #e2e8f0;
    font-weight: 600;
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.process-step {
    padding: 1.7rem 1.5rem;
    text-align: left;
    position: relative;
    border-radius: 24px;
    border: 1px solid rgba(148,163,184,0.14);
    background: linear-gradient(180deg, rgba(17, 24, 39, 0.88), rgba(10, 14, 24, 0.92));
    box-shadow:
        inset 0 1px 0 rgba(255,255,255,0.04),
        0 16px 34px rgba(2,6,23,0.2);
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 0.7s ease, transform 0.7s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.process-step.visible {
    opacity: 1;
    transform: translateY(0);
}

.step-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 52px;
    height: 32px;
    padding: 0 0.85rem;
    border-radius: 999px;
    border: 1px solid rgba(99,102,241,0.26);
    background: rgba(99,102,241,0.12);
    color: #c7d2fe;
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.16em;
    margin-bottom: 1rem;
    text-transform: uppercase;
}

.process-step h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: #e2e8f0;
    margin-bottom: 0.8rem;
    letter-spacing: -0.01em;
}

.process-step p {
    font-size: 0.95rem;
    color: #94a3b8;
    line-height: 1.8;
}

.process-step:hover {
    border-color: rgba(129,140,248,0.24);
    box-shadow:
        inset 0 1px 0 rgba(255,255,255,0.06),
        0 20px 40px rgba(2,6,23,0.28);
}

.step-dot {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(99,102,241,0.12);
    border: 1px solid rgba(99,102,241,0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.8rem;
    position: relative;
    z-index: 1;
}

.step-dot-inner {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: linear-gradient(135deg, #6366f1, #a78bfa);
    box-shadow: 0 0 12px rgba(99,102,241,0.6);
}

.step-line {
    width: calc(100% - 24px);
    height: 1px;
    background: linear-gradient(90deg, rgba(99,102,241,0.4), rgba(167,139,250,0.05));
    position: absolute;
    top: 24px;
    left: calc(48px + 1.5rem + 12px);
    z-index: 0;
}

.step-line.last { display: none; }

.references-section {
    padding: 110px 0;
    background: linear-gradient(180deg, #080812 0%, #0a0b16 48%, #07070f 100%);
    border-top: 1px solid rgba(255,255,255,0.04);
    position: relative;
    overflow: hidden;
}

.references-section::before {
    content: '';
    position: absolute;
    inset: -10% auto auto 50%;
    width: 720px;
    height: 720px;
    transform: translateX(-50%);
    background: radial-gradient(circle, rgba(99,102,241,0.14) 0%, rgba(99,102,241,0.05) 28%, transparent 68%);
    pointer-events: none;
    filter: blur(8px);
}

.references-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    text-align: center;
    position: relative;
    z-index: 1;
}

.references-header {
    max-width: 880px;
    margin: 0 auto 3.25rem;
}

.references-title {
    font-size: clamp(2rem, 4vw, 3.2rem);
    font-weight: 700;
    line-height: 1.25;
    color: #f1f5f9;
    margin-bottom: 1.4rem;
    letter-spacing: -0.02em;
}

.references-desc {
    max-width: 860px;
    margin: 0 auto 3.2rem;
    font-size: 1.02rem;
    line-height: 1.85;
    color: #94a3b8;
}

.references-logos {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
    align-items: stretch;
    perspective: 1400px;
    perspective-origin: center top;
    margin-top: 1rem;
}

.reference-logo {
    --rx: 0deg;
    --ry: 0deg;
    --lift: 0px;
    --glow-x: 50%;
    --glow-y: 50%;
    min-height: 132px;
    border-radius: 26px;
    border: 1px solid rgba(148,163,184,0.16);
    background:
        radial-gradient(circle at var(--glow-x) var(--glow-y), rgba(255,255,255,0.18), transparent 34%),
        linear-gradient(145deg, rgba(15,23,42,0.96), rgba(9,14,26,0.94) 45%, rgba(5,8,18,0.98));
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.1rem;
    opacity: 1;
    transform-style: preserve-3d;
    transform: rotateX(var(--rx)) rotateY(var(--ry)) translateY(calc(var(--lift) * -1));
    transition: border-color 0.35s ease, box-shadow 0.35s ease, transform 0.18s ease-out, background 0.35s ease;
    box-shadow:
        0 18px 40px rgba(0,0,0,0.28),
        0 4px 16px rgba(59,130,246,0.08),
        inset 0 1px 0 rgba(255,255,255,0.08),
        inset 0 -12px 24px rgba(0,0,0,0.22);
    text-align: center;
    position: relative;
    overflow: hidden;
    isolation: isolate;
}

.reference-logo.visible {
    opacity: 1;
    animation: referenceCardFloat 6s ease-in-out infinite;
}

.reference-logo:hover {
    border-color: rgba(129,140,248,0.34);
    box-shadow:
        0 30px 70px rgba(0,0,0,0.42),
        0 0 40px rgba(99,102,241,0.18),
        inset 0 1px 0 rgba(255,255,255,0.12),
        inset 0 -14px 28px rgba(0,0,0,0.2);
}

.reference-logo::before {
    content: '';
    position: absolute;
    inset: 1px;
    border-radius: 24px;
    background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.02) 28%, rgba(255,255,255,0) 60%);
    pointer-events: none;
    z-index: 0;
}

.reference-logo::after {
    content: '';
    position: absolute;
    inset: auto 12% 10px;
    height: 18px;
    border-radius: 999px;
    background: radial-gradient(circle, rgba(99,102,241,0.25), transparent 70%);
    filter: blur(18px);
    opacity: 0.9;
    pointer-events: none;
    z-index: 0;
}

.reference-logo-inner {
    position: relative;
    width: 100%;
    min-height: 100%;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.35rem 1rem;
    transform: translateZ(36px);
    background: linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.01));
    border: 1px solid rgba(255,255,255,0.04);
    z-index: 1;
}

.reference-logo span {
    display: block;
    width: 100%;
    font-size: 1.2rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    line-height: 1.35;
    word-break: keep-all;
    overflow-wrap: anywhere;
}

.reference-logo--posco span {
    color: #e5edf9;
}

.reference-logo--lg span {
    color: #ffffff;
    font-size: 1rem;
}

.reference-logo--ecopro span {
    color: #4ade80;
}

.reference-logo--cj span {
    color: #f8fafc;
    font-size: 0.95rem;
}

.reference-logo--osstem span {
    color: #60a5fa;
    font-size: 0.98rem;
}

.reference-logo--hyundai span {
    color: #cbd5e1;
    font-size: 1rem;
}

.reference-logo--sh span {
    color: #f9a8d4;
    font-size: 0.96rem;
}

.reference-logo--openai span {
    color: #f8fafc;
    font-size: 1.15rem;
    letter-spacing: 0.16em;
}

.reference-logo--alpha span {
    color: #fcd34d;
    font-size: 1.05rem;
}

@keyframes referenceCardFloat {
    0%, 100% {
        transform: rotateX(var(--rx)) rotateY(var(--ry)) translateY(0);
    }
    50% {
        transform: rotateX(calc(var(--rx) + 1.2deg)) rotateY(var(--ry)) translateY(-6px);
    }
}

/* ========================= */
/*   CTA 섹션                 */
/* ========================= */

.cta-glow {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 700px; height: 500px;
    background: radial-gradient(ellipse, rgba(99,102,241,0.12) 0%, transparent 65%);
    pointer-events: none;
}

.cta-container > *:not(.cta-glow) {
    position: relative;
    z-index: 1;
}

.cta-label {
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: rgba(129,140,248,0.9);
    background: rgba(99,102,241,0.08);
    border: 1px solid rgba(129,140,248,0.2);
    border-radius: 50px;
    padding: 0.35rem 1.2rem;
    display: inline-block;
    margin-bottom: 2rem;
}

.cta-title {
    font-size: clamp(2.4rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.2;
    color: #f1f5f9;
    margin-bottom: 1.5rem;
    letter-spacing: -0.03em;
}

.cta-desc {
    font-size: 1.05rem;
    color: #566070;
    line-height: 1.85;
    margin-bottom: 3.5rem;
}

.cta-btns {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* ========================= */
/*   공통 버튼                 */
/* ========================= */

.cta-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.65rem;
    background: linear-gradient(135deg, #5a5ee8, #8b5cf6);
    color: #fff;
    padding: 1rem 2.4rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    letter-spacing: 0.01em;
    transition: all 0.35s cubic-bezier(0.25, 1, 0.5, 1);
    box-shadow: 0 8px 30px rgba(99,102,241,0.3), inset 0 1px 0 rgba(255,255,255,0.15);
}

.cta-primary:hover {
    transform: translateY(-4px);
    box-shadow: 0 18px 48px rgba(99,102,241,0.45), inset 0 1px 0 rgba(255,255,255,0.15);
}

.cta-secondary {
    display: inline-flex;
    align-items: center;
    background: rgba(255,255,255,0.04);
    color: rgba(203,213,225,0.85);
    padding: 1rem 2.4rem;
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 50px;
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    backdrop-filter: blur(8px);
    transition: all 0.35s cubic-bezier(0.25, 1, 0.5, 1);
}

.cta-secondary:hover {
    background: rgba(255,255,255,0.08);
    border-color: rgba(255,255,255,0.25);
    color: #fff;
    transform: translateY(-4px);
}

/* ========================= */
/*   반응형                   */
/* ========================= */

@media (max-width: 1024px) {
    .process-highlights { grid-template-columns: 1fr; }
    .process-steps { grid-template-columns: repeat(2, 1fr); }
    .step-line { display: none; }
    .about-cards { grid-template-columns: 1fr 1fr; }
    .industry-card { padding: 2.2rem 2rem 2rem; }
    .industry-card-bg-num { font-size: 7rem; }
    .expertise-card { padding: 2.4rem 2.2rem; }
    .references-stage { height: 500px; }
    .reference-logo {
        width: min(34vw, 220px);
        transform:
            translate(-50%, -50%)
            rotateY(calc(40deg * var(--index)))
            translateZ(300px)
            rotateX(8deg);
    }
}

@media (max-width: 768px) {
    .about-section, .process-section { padding: 72px 0; }
    .references-section { padding: 72px 0; }
    .industries-section { padding: 72px 0; }
    .expertise-section { padding: 72px 0; }
    .cta-section { padding: 80px 0; }
    .about-cards { grid-template-columns: 1fr; }
    .industries-grid { grid-template-columns: 1fr; }
    .industry-card { padding: 2rem 1.8rem 1.8rem; min-height: auto; }
    .industry-card-bg-num { font-size: 6rem; }
    .expertise-grid { grid-template-columns: 1fr; }
    .expertise-card { padding: 2rem 1.8rem; }
    .expertise-card h3 { font-size: 1.4rem; }
    .process-steps { grid-template-columns: 1fr; gap: 1.5rem; }
    .process-step { padding: 0 1rem; }
    .process-lead { font-size: 0.96rem; margin-bottom: 1.8rem; }
    .process-highlights { margin-bottom: 2.6rem; }
    .references-header { margin-bottom: 2rem; }
    .references-desc { margin-bottom: 0; font-size: 0.96rem; }
    .references-stage { height: 420px; }
    .references-core-glow { width: 220px; height: 220px; }
    .reference-logo {
        width: min(52vw, 210px);
        min-height: 102px;
        border-radius: 20px;
        transform:
            translate(-50%, -50%)
            rotateY(calc(40deg * var(--index)))
            translateZ(190px)
            rotateX(8deg);
    }
    .reference-logo-inner {
        min-height: 78px;
        padding: 1rem 0.8rem;
        transform: translateZ(18px);
    }
    .reference-logo span { font-size: 0.96rem; }
    .cta-btns { flex-direction: column; align-items: center; }
    .cta-primary, .cta-secondary {
        width: 100%;
        max-width: 320px;
        justify-content: center;
    }
    .about-title, .industries-title, .process-title, .expertise-title { font-size: 1.9rem; }
    .cta-title { font-size: 2.2rem; }
}

.references-logos {
    margin-top: 1rem;
}

.references-stage {
    position: relative;
    height: 620px;
    perspective: 2200px;
    perspective-origin: center 42%;
    transform-style: preserve-3d;
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.8s ease, transform 0.8s ease;
    overflow: visible;
}

.references-stage.visible {
    opacity: 1;
    transform: translateY(0);
}

.references-stage::before {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 52px;
    width: min(82vw, 840px);
    height: 150px;
    transform: translateX(-50%);
    background:
        radial-gradient(ellipse, rgba(129,140,248,0.22) 0%, rgba(59,130,246,0.12) 34%, rgba(14,165,233,0.07) 54%, transparent 76%);
    filter: blur(32px);
    pointer-events: none;
}

.references-stage::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 102px;
    width: min(74vw, 720px);
    height: 74px;
    transform: translateX(-50%) rotateX(78deg);
    border-radius: 50%;
    border: 1px solid rgba(148,163,184,0.18);
    box-shadow:
        0 0 0 1px rgba(255,255,255,0.03) inset,
        0 0 40px rgba(99,102,241,0.16),
        0 0 90px rgba(34,211,238,0.08);
    background:
        radial-gradient(ellipse at center, rgba(255,255,255,0.08), rgba(255,255,255,0.01) 42%, transparent 70%);
    pointer-events: none;
    opacity: 0.95;
}

.references-core-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 380px;
    height: 380px;
    transform: translate(-50%, -50%);
    background:
        radial-gradient(circle, rgba(255,255,255,0.12) 0%, rgba(129,140,248,0.22) 18%, rgba(56,189,248,0.16) 38%, rgba(14,165,233,0.08) 55%, transparent 74%);
    filter: blur(18px);
    pointer-events: none;
    z-index: 0;
    animation: referenceCorePulse 6.8s ease-in-out infinite;
}

.references-core-glow::before,
.references-core-glow::after {
    content: '';
    position: absolute;
    inset: 50%;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    pointer-events: none;
}

.references-core-glow::before {
    width: 156px;
    height: 156px;
    border: 1px solid rgba(165,180,252,0.28);
    box-shadow:
        0 0 24px rgba(129,140,248,0.24),
        inset 0 0 28px rgba(255,255,255,0.05);
    background: radial-gradient(circle, rgba(255,255,255,0.08), rgba(255,255,255,0.01) 48%, transparent 72%);
}

.references-core-glow::after {
    width: 250px;
    height: 250px;
    border: 1px dashed rgba(56,189,248,0.18);
    opacity: 0.55;
    animation: referenceHaloSpin 18s linear infinite;
}

.references-orbit {
    position: absolute;
    inset: 0;
    transform-style: preserve-3d;
    animation: referenceOrbitSpin 30s linear infinite;
}

.references-stage:hover .references-orbit {
    animation-play-state: paused;
}

.reference-logo {
    position: absolute;
    top: 50%;
    left: 50%;
    width: min(28vw, 240px);
    min-height: 128px;
    border-radius: 26px;
    border: 1px solid rgba(148,163,184,0.18);
    background:
        linear-gradient(155deg, rgba(15,23,42,0.94), rgba(7,10,20,0.98));
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    text-align: center;
    overflow: hidden;
    isolation: isolate;
    backface-visibility: hidden;
    transform-style: preserve-3d;
    transform:
        translate(-50%, -50%)
        rotateY(calc(40deg * var(--index)))
        translateZ(430px);
    box-shadow:
        0 22px 44px rgba(0,0,0,0.34),
        0 0 30px rgba(99,102,241,0.08),
        inset 0 1px 0 rgba(255,255,255,0.08),
        inset 0 -18px 30px rgba(0,0,0,0.24);
    transition: border-color 0.35s ease, box-shadow 0.35s ease, filter 0.35s ease, transform 0.35s ease;
    will-change: transform;
}

.reference-logo:hover {
    border-color: rgba(165,180,252,0.48);
    box-shadow:
        0 24px 48px rgba(0,0,0,0.42),
        0 0 32px rgba(99,102,241,0.22),
        inset 0 1px 0 rgba(255,255,255,0.12),
        inset 0 -18px 30px rgba(0,0,0,0.18);
    filter: brightness(1.08);
}

.reference-logo::before {
    content: '';
    position: absolute;
    inset: 1px;
    border-radius: 24px;
    background:
        linear-gradient(180deg, rgba(255,255,255,0.12), rgba(255,255,255,0.03) 28%, rgba(255,255,255,0) 62%),
        radial-gradient(circle at 50% 18%, rgba(255,255,255,0.16), transparent 38%),
        linear-gradient(120deg, rgba(255,255,255,0.08), transparent 34%);
    pointer-events: none;
    z-index: 0;
}

.reference-logo::after {
    content: '';
    position: absolute;
    inset: auto 12% 10px;
    height: 22px;
    border-radius: 999px;
    background: radial-gradient(circle, rgba(99,102,241,0.24), transparent 72%);
    filter: blur(18px);
    opacity: 0.95;
    pointer-events: none;
    z-index: 0;
}

.reference-logo-inner {
    position: relative;
    width: 100%;
    min-height: 96px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.35rem 1rem;
    transform: translateZ(42px);
    background:
        linear-gradient(180deg, rgba(255,255,255,0.09), rgba(255,255,255,0.015)),
        radial-gradient(circle at 50% 0%, rgba(255,255,255,0.06), transparent 58%);
    border: 1px solid rgba(255,255,255,0.07);
    box-shadow:
        inset 0 1px 0 rgba(255,255,255,0.08),
        inset 0 -20px 28px rgba(2,6,23,0.2);
    z-index: 1;
    backdrop-filter: blur(10px);
}

.reference-logo span {
    display: block;
    width: 100%;
    font-size: 1.2rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    line-height: 1.35;
    word-break: keep-all;
    overflow-wrap: anywhere;
}

.reference-logo--posco span { color: #e5edf9; }
.reference-logo--lg span { color: #ffffff; font-size: 1rem; }
.reference-logo--ecopro span { color: #4ade80; }
.reference-logo--cj span { color: #f8fafc; font-size: 0.95rem; }
.reference-logo--osstem span { color: #60a5fa; font-size: 0.98rem; }
.reference-logo--hyundai span { color: #cbd5e1; font-size: 1rem; }
.reference-logo--sh span { color: #f9a8d4; font-size: 0.96rem; }
.reference-logo--openai span { color: #f8fafc; font-size: 1.15rem; letter-spacing: 0.16em; }
.reference-logo--alpha span { color: #fcd34d; font-size: 1.05rem; }

@keyframes referenceOrbitSpin {
    0% {
        transform: rotateX(-14deg) rotateY(0deg) rotateZ(0deg);
    }
    25% {
        transform: rotateX(-11deg) rotateY(90deg) rotateZ(0.35deg);
    }
    50% {
        transform: rotateX(-15deg) rotateY(180deg) rotateZ(0deg);
    }
    75% {
        transform: rotateX(-12deg) rotateY(270deg) rotateZ(-0.35deg);
    }
    100% {
        transform: rotateX(-14deg) rotateY(360deg) rotateZ(0deg);
    }
}

@keyframes referenceCorePulse {
    0%, 100% {
        opacity: 0.86;
        transform: translate(-50%, -50%) scale(0.96);
    }
    50% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1.06);
    }
}

@keyframes referenceHaloSpin {
    0% {
        transform: translate(-50%, -50%) rotate(0deg);
    }
    100% {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

@media (max-width: 1024px) {
    .references-stage {
        height: 540px;
        perspective: 1800px;
    }
    .reference-logo {
        width: min(34vw, 220px);
        transform:
            translate(-50%, -50%)
            rotateY(calc(40deg * var(--index)))
            translateZ(330px);
    }
}

@media (max-width: 768px) {
    .references-stage {
        height: 450px;
        perspective: 1300px;
        perspective-origin: center 48%;
    }
    .references-stage::before {
        bottom: 28px;
        width: min(92vw, 620px);
        height: 110px;
    }
    .references-stage::after {
        bottom: 70px;
        width: min(86vw, 500px);
    }
    .references-core-glow {
        width: 240px;
        height: 240px;
    }
    .references-core-glow::before {
        width: 108px;
        height: 108px;
    }
    .references-core-glow::after {
        width: 170px;
        height: 170px;
    }
    .reference-logo {
        width: min(52vw, 210px);
        min-height: 102px;
        border-radius: 20px;
        transform:
            translate(-50%, -50%)
            rotateY(calc(40deg * var(--index)))
            translateZ(210px);
    }
    .reference-logo-inner {
        min-height: 78px;
        padding: 1rem 0.8rem;
        transform: translateZ(18px);
    }
    .reference-logo span { font-size: 0.96rem; }
}