.page {
    background: var(--bg-dark);
}
.hero_sec {
    padding-top: var(--sec-gap);
}
.hero-header {
    padding: 0 40px;
}
.hero-title {
    font-size: clamp(74px,7.812vw, 150px);
    color: white;
}
 .hero-title .char-box {
    overflow: hidden;
    display: inline-block;
}
.hero-title .char {
    display: block;
    transform: translateX(-100%);
    opacity: 0;
    line-height: 1;
}
.hero-title .text-box {
    display: block;
}
.sec-header {
    margin-bottom: calc(var(--sec-gap) / 2);
    overflow: hidden;
}
.sec-title {
    color: white;
}
.sec-subtitle {
    color: var(--gray-200);
}

/* about_sec */
.about_sec .inner {
    padding: 0 10px;
}
.about_sec .sec-content {
    width: 100%;
    height: 200vh;
}
.about_sec .sticky {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: sticky;
    top: 0;
}

.video-card {
    overflow: hidden;
    width: 400px;
    height: 500px;
    border-radius: var(--border-radius);
    transform: rotateY(180deg);
     will-change: width;
}

.about_sec .sec-title {
    font-size: var(--t4);
}
.about_sec .sec-subtitle {
    font-size: var(--t7);
    font-weight: var(--medium);
    margin-left: 50%;
    padding-left: var(--con-gap);
    margin-top: var(--con-gap);
}


/* value_sec */
.value_sec {
    margin-top: var(--sec-gap);
}

.value_sec .sec-content {
    /* display: flex;
    gap: var(--con-gap); */
    position: relative;
    
}
.value_t {
    height: 100vh;
    position: sticky;
    top: 0;
    padding: 10px;
}
.value-visual {
    width: 100%;
    height: 100%;
    /* aspect-ratio: 1; */
    border-radius: var(--border-radius-lg);
     will-change: width;
}
.value_b {
    padding: var(--sec-gap) 0 var(--sec-gap) var(--con-gap);
    margin-left: 50%;
    position: relative;
    z-index: 1;
}
.value {
    width: 50%;
}
.value:nth-child(2n) {
    margin-left: 50%;
}
.value-list {
    display: flex;
    flex-direction: column;
    align-items: start;
    gap: calc(var(--sec-gap) / 2);
    padding-right: var(--con-gap);

}
.value-icon {
    width: 80px;
    height: 80px;
    margin-bottom: 50px;
    border-radius: var(--border-radius);
    background: #ffffff20;
    padding: 10px;
}
.value-title {
    font-size: var(--t7);
    color: white;
    font-weight: var(--medium);
    margin-bottom: 20px;
}
.value-desc {
    font-size: var(--d1);
    color: var(--gray-300);
}
.value-icon,
.value-title,
.value-desc  {
    transform: translateY(30px);
    opacity: 0;
}


/* strengths_sec */
.strengths_sec {
    margin-top: var(--sec-gap);
}
.strengths {
    width: 25%;
    aspect-ratio: 1;
    border-radius: 50%;
    border: 1px solid var(--gray-400);
    background: var(--bg-dark);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 40px;
    opacity: 0;
    transform: translateY(50%);
}
.strengths:nth-child(1) {
    border-top: 0;
}
.strengths:nth-child(2) {
    border-right: 0;
}
.strengths:nth-child(3) {
    border-bottom: 0;
}
.strengths:nth-child(4) {
    border-left: 0;
}
.strengths-list {
    display: flex;
    position: relative;
    width: 100%;
}
/* .strengths:nth-child(1) {
    transform: translateX(150%);    
}
.strengths:nth-child(2) {
    transform: translateX(50%);    
}
.strengths:nth-child(3) {
    transform: translateX(-50%);    
}
.strengths:nth-child(4) {
    transform: translateX(-150%);    
} */

.strengths-icon {
    width: 70px;
    height: 70px;
    /* background: var(--glass); */
    border-radius: var(--border-radius);
}
.strengths-text {
    text-align: center;
}
.strengths-title {
    font-size: var(--t7);
    font-weight: var(--semi-bold);
    color: white;
    margin-bottom: 20px;
}
.strengths-desc {
    font-size: var(--d2);
    color: var(--gray-300);
}



/* history_sec */
.history_sec {
    margin-top: var(--sec-gap);
    padding-bottom: var(--sec-gap);
}
.history-list {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--con-gap);
    text-align: center;
}
.history {
    opacity: 0.1;
    display: flex;
    align-items: center;
    gap: 30px;
}
.history-year {
    font-size: var(--t6);
    color: white;
    font-weight: var(--semi-bold);
    
}
.history-desc {
    font-size: var(--t7);
    color: var(--gray-300);
    margin-bottom: 10px;
    font-weight: var(--normal);
}
.history-desc:last-child {
    margin-bottom: 0;
}

@media screen and (max-width: 1500px) {
    /* .strengths-list {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
    } */
     .strengths-icon {
        width: 60px;
        height: 60px;
     }
    .strengths {
        width: 100%;
        gap: 30px;
    }
    .value-icon {
        width: 70px;
        height: 70px;
    }
}
@media screen and (max-width: 1200px) {
     .strengths-list {
        margin: 0 auto;
        max-width: 900px;
        display: grid;
        grid-template-columns: repeat(2, 1fr);
    }
    .value {
        width: 100%;
    }
    .value:nth-child(2n) {
        margin-left: 0;
    }
    .value-icon {
        margin-bottom: 40px;
    }
    
}
@media screen and (max-width: 960px) {
    .h_top.white.scroll .h_logo .logo_w {
        opacity: 1 !important;
    }
    .h_top.white.scroll .h_logo .logo_b {
        opacity: 0 !important;
    }
    .value_t {
        position: static;
        height: auto;
    }
    .value-visual {
        aspect-ratio: 1.5 / 1;
    }
    .value_b{
        margin-left: 0;
        padding: 0 var(--con-gap);
        margin-top: var(--con-gap);
    }
    .value-list {
        display: grid;
        grid-template-columns: 1fr 1fr;
        padding: 0;
    }
}
@media screen and (max-width: 730px) {
    .hero_sec {
        padding-top: calc(var(--sec-gap) * 2);
    }
    .hero-title {
        font-size: clamp(40px,10vw, 74px);
        color: white;
    }
    .video-card {
        width: clamp(300px,50vw,400px);
    }
    .about_sec .sec-subtitle {
        padding-left: 0;
   }
   .value-icon {
        width: 60px;
        height: 60px;
   }
   .strengths {
        gap: 14px;
   }
   .strengths-icon {
        width: 46px;
        height: 46px;
    }
}
@media screen and (max-width: 500px) {
   
    .hero-header {
        padding: 0 20px;
    }
    .about_sec .sec-subtitle {
        margin-left: 33.333%;
    }
    .strengths {
        border-radius: var(--border-radius-lg);
        padding: 20px;
        aspect-ratio: unset;
        opacity: 1 !important;
        transform: translateY(0) !important;
        justify-content: start;
    }
    .strengths-title {
        margin-bottom: 14px;
    }
    .strengths-icon {
        width: 42px;
        height: 42px;
    }
    .value_b {
        padding: 0 20px;
    }
    .value-list {
        gap: 40px 20px;
    }
    .value-icon {
        width: 50px;
        height: 50px;
        margin-bottom: 20px;
    }
    .history {
        gap: 16px;
    }
}