/* =========================================================
   삼진금속 ABOUT PAGE (about.css)
========================================================= */

/* 1. 페이지 전체 레이아웃 */
.about-page {
    padding-top: 90px;
    background-color: #fdfdfd;
}

/* 2. 서브 히어로 배너 */
.about-hero {
    background: #111111;
    color: #ffffff;
    padding: 35px 20px;
    text-align: center;
}

.about-hero .hero-inner h1 {
    font-size: 13px;
    letter-spacing: 3px;
    color: #c59b27;
    margin-bottom: 4px;
    font-weight: 700;
    text-transform: uppercase;
}

.about-hero .hero-inner p {
    font-size: 24px;
    font-weight: 800;
    margin: 0;
}

/* 3. 메인 컨테이너 */
.about-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 80px 20px;
}

/* 4. 회사 소개 인사말 */
.about-intro {
    text-align: center;
    max-width: 860px;
    margin: 0 auto 70px auto;
}

/* CRAFTSMANSHIP & PRECISION (폰트 크기 확대) */
.about-intro .sub-title {
    display: inline-block;
    font-size: 18px;
    /* 기존 13px -> 18px 확대 */
    font-weight: 800;
    letter-spacing: 3px;
    color: #c59b27;
    margin-bottom: 16px;
}

.about-intro h2 {
    font-size: 32px;
    font-weight: 800;
    color: #111111;
    line-height: 1.4;
    margin-bottom: 24px;
    word-break: keep-all;
}

.about-intro h2 strong {
    color: #c59b27;
}

.about-intro .intro-desc {
    font-size: 16px;
    color: #666666;
    line-height: 1.8;
    margin: 0;
    word-break: keep-all;
}

/* =========================================================
   5. 주요 고객사 (MAJOR CLIENTS) - PREMIUM DESIGN
========================================================= */
.clients-section {
    margin-top: 80px;
    padding-top: 60px;
    border-top: 1px solid #f0f0f0;
}

.clients-section .section-title {
    text-align: center;
    margin-bottom: 50px;
}

.clients-section .section-title .sub-title {
    display: inline-block;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 2px;
    color: #c59b27;
    margin-bottom: 8px;
}

.clients-section .section-title h2 {
    font-size: 30px;
    font-weight: 800;
    color: #111111;
    margin-bottom: 10px;
}

.clients-section .section-title .section-desc {
    font-size: 15px;
    color: #777777;
    margin: 0;
}

/* 4컬럼 카드 그리드 */
.clients-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.client-card {
    position: relative;
    background: #ffffff;
    border-radius: 16px;
    padding: 1px;
    /* 테두리 그라데이션용 */
    background: linear-gradient(135deg, #f0f0f0 0%, #e0e0e0 100%);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.03);
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.client-card .card-inner {
    background: #ffffff;
    border-radius: 15px;
    padding: 35px 20px;
    text-align: center;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

/* 마우스 호버 효과: 떠오름 + 골드 빛 Glow */
.client-card:hover {
    transform: translateY(-8px);
    background: linear-gradient(135deg, #c59b27 0%, #e5c158 100%);
    box-shadow: 0 18px 40px rgba(197, 155, 39, 0.15);
}

/* 로고 영역 스타일 */
.logo-box {
    width: 100%;
    height: 90px;
    background-color: #fafafa;
    border: 1px dashed #dddddd;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.client-card:hover .logo-box {
    background-color: #fffdf8;
    border-color: #e5c158;
}

.logo-box span {
    font-size: 13px;
    font-weight: 700;
    color: #999999;
    letter-spacing: 0.5px;
}

.logo-box img {
    max-width: 80%;
    max-height: 80%;
    object-fit: contain;
}

.client-card h3 {
    font-size: 20px;
    font-weight: 800;
    color: #111111;
    margin: 0 0 8px 0;
}

.partner-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: #c59b27;
    background: #fcf8ec;
    padding: 4px 12px;
    border-radius: 20px;
}

/* 6. 모바일 반응형 (768px 이하) */
@media (max-width: 992px) {
    .clients-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
}

@media (max-width: 768px) {
    .about-page {
        padding-top: 60px;
    }

    .about-hero {
        padding: 25px 20px;
    }

    .about-hero .hero-inner p {
        font-size: 20px;
    }

    .about-container {
        padding: 50px 20px;
    }

    .about-intro .sub-title {
        font-size: 15px;
    }

    .about-intro h2 {
        font-size: 24px;
    }

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

    .client-card .card-inner {
        padding: 25px 20px;
    }

    .logo-box {
        height: 80px;
    }
}