.register-body {
    min-height: 100vh;
    background: url(../imgs/background.png) no-repeat center center, linear-gradient(180deg, #001828, #002943);
    background-size: cover;
    color: #eaf6ff;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.register-page {
    width: 1080px;
    max-width: 100%;
    display: grid;
    grid-template-columns: 420px 1fr;
    gap: 40px;
    align-items: center;
    min-height: auto;
}

.register-left {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 30px;
}

.register-logo {
    background: url(../imgs/logo.png) center center no-repeat;
    background-size: contain;
    width: 400px;
    height: 150px;
    max-width: 90%;
}

.register-avatar-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 25px;
    width: 100%;
}

.register-avatar-stand {
    width: 276px;
    height: 252px;
    background: url(../imgs/user_login.png) center center no-repeat;
    background-size: contain;
    border-radius: 14px;
    image-rendering: pixelated;
}

.register-gender {
    display: flex;
    gap: 15px;
    width: 100%;
    justify-content: center;
    flex-wrap: wrap;
}

.register-gender input {
    display: none;
}

.gender-card {
    position: relative;
    width: 200px;
    min-width: 180px;
    height: 110px;
    border-radius: 11px;
    overflow: hidden;
    cursor: pointer;
    transition: transform .2s, box-shadow .2s, border .2s;
    opacity: 0.8;
    background: #000d18;
    flex: 1;
}

label.gender-card.male {
    border: 2px solid #0075c9;
    border-left: 5px solid #0075c9;
}

label.gender-card.female {
    border: 2px solid #ef00b8;
    border-left: 5px solid #ef00b8;
}

.gender-card:hover {
    transform: translateY(-2px);
}

.gender-bg {
    position: absolute;
    inset: 0;
    opacity: .9;
    margin: 5px;
    border-radius: 4px;
    background-size: cover;
}

.male .gender-bg {
    background: url(../imgs/back_male.png) center top no-repeat;
    border: 1px solid #0091af;
}

.female .gender-bg {
    background: url(../imgs/back_female.png) center top no-repeat;
    border: 1px solid #870166;
}

.gender-avatar {
    position: absolute;
    inset: 0;
    background: url(../imgs/user_login.png) center top no-repeat;
    image-rendering: pixelated;
    margin: 8px;
}

.gender-footer {
    position: absolute;
    bottom: 10px;
    left: 10px;
    right: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 4px 10px;
    border-radius: 7px;
    background: rgb(0 0 0 / 50%);
    color: #fff;
    font-weight: 700;
    font-size: 14px;
}

.gender-footer.female {
    border: 1px solid #e6b8d7;
}

.gender-footer.male {
    border: 1px solid #6ed4e0;
}

.gender-icon {
    font-size: 20px;
}

input:checked + .gender-card {
    opacity: 1;
    transform: scale(1.02);
}

.register-right {
    padding: 20px 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.register-title {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 5px;
    line-height: 1.2;
}

.register-subtitle {
    opacity: 0.85;
    margin-bottom: 20px;
    line-height: 1.5;
    font-size: 16px;
}

.register-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.register-form-group {
    margin-bottom: 5px;
}

.register-label {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 5px;
}

.register-helper {
    font-size: 14px;
    opacity: 0.75;
    margin-bottom: 8px;
}

.register-input-wrapper {
    position: relative;
    width: 100%;
}

.register-input-wrapper::before {
    content: "";
    position: absolute;
    top: 7px;
    left: 7px;
    right: 7px;
    bottom: 7px;
    border: 1px solid #0a3358;
    border-radius: 6px;
    pointer-events: none;
}

.register-input {
    padding: 16px 20px;
    width: 100%;
    border-radius: 10px;
    color: #fff;
    font-size: 14px;
    outline: none;
    background: #000e1f;
    border: 1px solid #006098;
    box-sizing: border-box;
}

.register-input::placeholder {
    color: #134864;
}

.register-tip {
    border-radius: 10px;
    padding: 14px;
    font-size: 13px;
    line-height: 1.5;
    background: #002a4c;
    border: 1px solid #003158;
    box-shadow: inset 0 0 8px rgba(0, 0, 0, 0.8);
    color: #2570a6;
}

.register-submit {
    position: relative;
    padding: 16px 24px;
    color: #fff;
    background: linear-gradient(to bottom, #005a80 0%, #005a80 50%, #003d59 50%, #003d59 100%);
    border: 1px solid #000000;
    border-radius: 7px;
    cursor: pointer;
    width: 100%;
    font-size: 16px;
    font-weight: bold;
    margin-top: 10px;
    transition: all 0.2s;
}

.register-submit:before {
    content: "";
    position: absolute;
    top: 4px;
    left: 4px;
    right: 4px;
    bottom: 4px;
    border: 1px solid #207da4;
    border-radius: 4px;
    pointer-events: none;
}

.register-submit:hover {
    filter: brightness(1.1);
    transform: translateY(-2px);
}

@media (max-width: 1024px) {
    .register-page {
        grid-template-columns: 1fr;
        gap: 30px;
        max-width: 90%;
    }
    
    .register-logo {
        width: 350px;
        height: 130px;
    }
    
    .gender-card {
        width: 180px;
        max-width: 180px;
        height: 100px;
    }
    
    .gender-footer {
        font-size: 13px;
    }
}

@media (max-width: 768px) {
    .register-page {
        gap: 20px;
    }
    
    .register-title {
        font-size: 28px;
        text-align: center;
    }
    
    .register-subtitle {
        text-align: center;
        font-size: 15px;
    }
    
    .register-logo {
        width: 300px;
        height: 110px;
    }
    
    .register-avatar-stand {
        height: 180px;
        display: none;
    }
    
    .register-gender {
        align-items: center;
        width: calc(100% - 80px);
    }
    
    .gender-card {
        width: 100%;
        max-width: 280px;
        height: 100px;
    }
    
    .register-label {
        font-size: 20px;
    }
    
    .register-input {
        padding: 14px 16px;
    }
}

@media (max-width: 480px) {
    .register-body {
        padding: 15px;
        align-items: flex-start;
        min-height: 100vh;
        height: auto;
    }
    
    .register-page {
        margin: 20px 0;
        gap: 15px;
    }
    
    .register-title {
        font-size: 24px;
    }
    
    .register-subtitle {
        font-size: 14px;
    }
    
    .register-logo {
        width: 250px;
        height: 90px;
    }
    
    .register-avatar-stand {
        height: 150px;
        display: none;
    }
    
    .gender-card {
        height: 90px;
    }
    
    .gender-footer {
        font-size: 12px;
        padding: 3px 8px;
        bottom: 8px;
        left: 8px;
        right: 8px;
    }
    
    .gender-icon {
        font-size: 18px;
    }
    
    .register-label {
        font-size: 18px;
    }
    
    .register-input {
        font-size: 13px;
        padding: 12px 14px;
    }
    
    .register-submit {
        padding: 14px;
        font-size: 15px;
    }
    
    .register-tip {
        padding: 12px;
        font-size: 12px;
    }
}
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background-color: #4169e1;
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background-color: #2f55d4;
}

* {
    scrollbar-width: thin;
    scrollbar-color: #4169e1 transparent;
}