body {
    margin: 0;
    color: #f2f2f2;
    font-family: "Pretendard", "Noto Sans KR", sans-serif;
}

/* ================================================================
   [페이지 레이아웃]
   ================================================================ */
.about03-page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding: 22vh 80px 80px;
    box-sizing: border-box;
    position: relative;
    overflow: hidden;
    gap: clamp(30px, 3.5vw, 50px);
}

/* 배경 영상 */
.about03-bg-video {
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 50%;
    height: 60%;
    opacity: 0.4;
    pointer-events: none;
    z-index: 0;
    object-fit: cover;
    filter: grayscale(100%);
    -webkit-mask-image: radial-gradient(ellipse 70% 65% at 50% 65%, black 10%, transparent 80%);
    mask-image: radial-gradient(ellipse 70% 65% at 50% 65%, black 10%, transparent 80%);
}

/* 영상 상하 경계 그라데이션 */
.about03-page::before,
.about03-page::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    height: 25%;
    z-index: 1;
    pointer-events: none;
}

.about03-page::before {
    top: 0;
    background: linear-gradient(to bottom, #090b10 0%, transparent 100%);
}

.about03-page::after {
    bottom: 0;
    background: linear-gradient(to top, #090b10 0%, transparent 100%);
}

/* ================================================================
   [타이틀 섹션 — 가운데 정렬]
   ================================================================ */
.about03-title-section {
    position: relative;
    z-index: 2;
    text-align: center;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
    transition-delay: 0.1s;
    margin-bottom: clamp(30px, 3vw, 50px);
}

.visible .about03-title-section {
    opacity: 1;
    transform: translateY(0);
}

.about03-title {
    font-size: clamp(36px, 5.5vw, 80px);
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -1px;
    margin: 0;
    word-break: keep-all;
}

.about03-title-text {
    background: linear-gradient(90deg, #3d4148 0%, #62666e 15%, #8a8d94 35%, #ffffff 55%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

/* ================================================================
   [내용 섹션]
   ================================================================ */
.about03-content {
    display: flex;
    align-items: flex-start;
    gap: clamp(30px, 4vw, 60px);
    max-width: 900px;
    width: 100%;
    position: relative;
    z-index: 2;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
    transition-delay: 0.35s;
    padding-left: clamp(60px, 8vw, 140px);
    box-sizing: border-box;
}

.visible .about03-content {
    opacity: 1;
    transform: translateY(0);
}

.about03-year {
    font-size: clamp(24px, 3vw, 48px);
    font-weight: 800;
    line-height: 1;
    color: #ea4c38;
    margin: 0;
    padding: 0;
    letter-spacing: -1px;
    flex-shrink: 0;
    background: none;
    -webkit-text-fill-color: #ea4c38;
    text-shadow: none;
    filter: none;
    align-self: flex-start;
    display: block;
}

/* 오른쪽 컬럼: 01 + 제목들 + 구분선 */
.about03-items {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: clamp(12px, 1.5vw, 18px);
}

.about03-item {
    display: grid;
    grid-template-columns: 3em 1fr;
    align-items: start;
    gap: clamp(8px, 1vw, 16px);
    opacity: 0;
    transform: translateX(16px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.about03-item > * {
    line-height: 1;
    margin: 0;
    padding: 0;
}

.about03-item:nth-child(1) {
    transition-delay: 0.2s;
}

.about03-item:last-child {
    transition-delay: 0.5s;
}

.visible .about03-item {
    opacity: 1;
    transform: translateX(0);
}

/* 번호 없는 두 번째 항목: 빈 span으로 첫 컬럼 채워 정렬 */
.about03-item--offset {
}

.about03-divider {
    width: 80%;
    height: 1px;
    background: linear-gradient(to right, transparent 0%, rgba(255,255,255,0.5) 10%, rgba(255,255,255,0.5) 90%, transparent 100%);
    margin: clamp(12px, 1.5vw, 20px) 0;
    opacity: 0;
    transition: opacity 0.8s ease;
    transition-delay: 0.35s;
}

.visible .about03-divider {
    opacity: 1;
}

.visible .about03-item {
    opacity: 1;
    transform: translateX(0);
}

.about03-item.active .about03-item-num {
    color: #eb443a;
}

.about03-item-num {
    display: block;
    font-size: clamp(14px, 1.6vw, 22px);
    font-weight: 700;
    letter-spacing: 0.1em;
    color: #ffffff;
    line-height: 1;
    margin: 0;
    padding: 0;
    transition: color 0.4s ease;
    flex-shrink: 0;
}

.about03-item-title {
    display: block;
    font-size: clamp(18px, 2.2vw, 28px);
    font-weight: 700;
    color: #fff;
    margin: 0;
    padding: 0;
    line-height: 1;
    word-break: keep-all;
}

.about03-item-text {
    display: block;
    font-size: clamp(18px, 2.2vw, 28px);
    color: #fff;
    line-height: 1.4;
    font-weight: 700;
    word-break: keep-all;
}

/* ================================================================
   [반응형]
   ================================================================ */
@media (max-width: 1024px) {
    .about03-page {
        padding: 120px 40px 60px;
    }
}

@media (max-width: 768px) {
    .about03-page {
        padding: 120px 20px 60px;
        min-height: auto;
        gap: 40px;
    }

    .about03-title {
        font-size: clamp(32px, 10vw, 52px);
    }

    .about03-content {
        flex-direction: column;
        align-items: flex-start;
        gap: 32px;
    }

    .about03-content-left {
        width: 100%;
    }

    .about03-year {
        font-size: clamp(40px, 12vw, 72px);
    }
}
    }
}