.element-container {
   margin-bottom: 0.96rem;
   position: relative;
}
.element-container h2 {
    color: #333;
    text-align: center;
    margin-top: 0.8rem;
}
.periodic-table {
    max-width: 15rem;
    display: grid;
    grid-template-columns: repeat(18, 0.76rem);
    grid-template-rows: repeat(7, 0.76rem) 0.15rem repeat(2, 0.76rem);
    gap: 0.03rem;
    margin: 0 auto;
    width: fit-content;
}

.element a {
    /* background-color: white; */
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    position: relative;
    display: grid;
    grid-template-rows: 0.2rem 1fr 0.2rem;
    grid-auto-flow: row;
    grid-auto-rows: max-content;
    width: 100%;
    height: 100%;
    color: white;
}
/* 第一个 div：左上角 */
.element div:nth-child(1) {
    justify-self: start;
    align-self: start;
    font-size: 0.15rem;
    margin-left: 0.05rem;
}

/* 第二个 div：绝对居中 */
.element div:nth-child(2) {
    justify-self: center;
    align-self: center;
    font-weight: bold;
}

/* 第三个 div：底部居中 */
.element div:nth-child(3) {
    max-width: calc(100% - 0.1rem);
    justify-self: center;
    align-self: end;
    font-size: 0.12rem;
    margin-bottom: 3px;
    margin-left: 0.05rem;
    margin-right: 0.05rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.element:hover {
    box-shadow: 0 0.04rem 0.08rem rgba(0, 0, 0, 0.15);
}

.black {
    background-color: #111!important;
}

.bigElement {
    box-shadow: 0px 12px 8px -12px #000;
    border-radius: 10px;
    opacity: 0;
    position: absolute;
    display: block;
    top: 1.5rem;
    right: 7.5%;
    transform: translateX(50%);
    width: 1.12rem;
    height: 1.12rem;
    color: #fff;
    transition: background-color 1s, opacity 0.5s;
    padding: 0.05rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.bigElement-num {
    font-size: 18px;
    margin-left: 0.06rem;
}

.bigElement-el {
    text-align: center;
    font-weight: bold;
    font-size: 0.32rem;
    line-height: 1;
}

.bigElement-title, .bigElement-atomicMass {
    text-align: center;
    font-size: max(0.16rem,14px);
}

.atomic-number {
    font-size: max(0.13rem,12px);
    color: white;
    font-weight: normal;
}

.symbol {
    font-size: 0.32rem;
    font-weight: bold;
    color: white;
    text-align: center;
    line-height: 1;
}

.name {
    font-size: 0.09rem;
    color: white;
    text-align: center;
    line-height: 1;
}


/* 元素类型颜色 */
.alkali-metal {
    background-color: #ED0042;
}

/* 碱金属 */
.alkaline-earth {
    background-color: #775D48;
}

/* 碱土金属 */
.transition {
    background-color: #08C5BE;
}

/* 过渡金属 */
.post-transition {
    background-color: #EE5800;
}

/* 其他金属 */
.metalloid {
    background-color: #27CC7A;
}

/* 准金属 */
.nonmetal {
    background-color: #865EAC;
}

/* 非金属 */
.halogen {
    background-color: #D2AB7F;
}

/* 卤素 */
.noble-gas {
    background-color: #B5D200;
}

/* 惰性气体 */
.lanthanide {
    background-color: #ED975D;
}

/* 镧系 */
.actinide {
    background-color: #4EAADD;
}

/* 锕系 */
.unknown {
    background-color: #7D5C9C;
}

/* 未知 */

/* 特殊元素 */
.element.hydrogen {
    background-color: #7D5C9C;
    grid-column: 1;
    grid-row: 1;
}

.element.helium {
    background-color: #B5D200;
    grid-column: 18;
    grid-row: 1;
}

/* 第二周期 */
.element.lithium {
    grid-column: 1;
    grid-row: 2;
}

.element.beryllium {
    grid-column: 2;
    grid-row: 2;
}

.element.boron {
    grid-column: 13;
    grid-row: 2;
}

.element.carbon {
    grid-column: 14;
    grid-row: 2;
}

.element.nitrogen {
    grid-column: 15;
    grid-row: 2;
}

.element.oxygen {
    grid-column: 16;
    grid-row: 2;
}

.element.fluorine {
    grid-column: 17;
    grid-row: 2;
}

.element.neon {
    grid-column: 18;
    grid-row: 2;
}

/* 第三周期 */
.element.sodium {
    grid-column: 1;
    grid-row: 3;
}

.element.magnesium {
    grid-column: 2;
    grid-row: 3;
}

.element.aluminum {
    grid-column: 13;
    grid-row: 3;
}

.element.silicon {
    grid-column: 14;
    grid-row: 3;
}

.element.phosphorus {
    grid-column: 15;
    grid-row: 3;
}

.element.sulfur {
    grid-column: 16;
    grid-row: 3;
}

.element.chlorine {
    grid-column: 17;
    grid-row: 3;
}

.element.argon {
    grid-column: 18;
    grid-row: 3;
}

/* 第四周期 */
.element.potassium {
    grid-column: 1;
    grid-row: 4;
}

.element.calcium {
    grid-column: 2;
    grid-row: 4;
}

.element.scandium {
    grid-column: 3;
    grid-row: 4;
}

.element.titanium {
    grid-column: 4;
    grid-row: 4;
}

.element.vanadium {
    grid-column: 5;
    grid-row: 4;
}

.element.chromium {
    grid-column: 6;
    grid-row: 4;
}

.element.manganese {
    grid-column: 7;
    grid-row: 4;
}

.element.iron {
    grid-column: 8;
    grid-row: 4;
}

.element.cobalt {
    grid-column: 9;
    grid-row: 4;
}

.element.nickel {
    grid-column: 10;
    grid-row: 4;
}

.element.copper {
    grid-column: 11;
    grid-row: 4;
}

.element.zinc {
    grid-column: 12;
    grid-row: 4;
}

.element.gallium {
    grid-column: 13;
    grid-row: 4;
}

.element.germanium {
    grid-column: 14;
    grid-row: 4;
}

.element.arsenic {
    grid-column: 15;
    grid-row: 4;
}

.element.selenium {
    grid-column: 16;
    grid-row: 4;
}

.element.bromine {
    grid-column: 17;
    grid-row: 4;
}

.element.krypton {
    grid-column: 18;
    grid-row: 4;
}

/* 第五周期 */
.element.rubidium {
    grid-column: 1;
    grid-row: 5;
}

.element.strontium {
    grid-column: 2;
    grid-row: 5;
}

.element.yttrium {
    grid-column: 3;
    grid-row: 5;
}

.element.zirconium {
    grid-column: 4;
    grid-row: 5;
}

.element.niobium {
    grid-column: 5;
    grid-row: 5;
}

.element.molybdenum {
    grid-column: 6;
    grid-row: 5;
}

.element.technetium {
    grid-column: 7;
    grid-row: 5;
}

.element.ruthenium {
    grid-column: 8;
    grid-row: 5;
}

.element.rhodium {
    grid-column: 9;
    grid-row: 5;
}

.element.palladium {
    grid-column: 10;
    grid-row: 5;
}

.element.silver {
    grid-column: 11;
    grid-row: 5;
}

.element.cadmium {
    grid-column: 12;
    grid-row: 5;
}

.element.indium {
    grid-column: 13;
    grid-row: 5;
}

.element.tin {
    grid-column: 14;
    grid-row: 5;
}

.element.antimony {
    grid-column: 15;
    grid-row: 5;
}

.element.tellurium {
    grid-column: 16;
    grid-row: 5;
}

.element.iodine {
    grid-column: 17;
    grid-row: 5;
}

.element.xenon {
    grid-column: 18;
    grid-row: 5;
}

/* 第六周期 */
.element.cesium {
    grid-column: 1;
    grid-row: 6;
}

.element.barium {
    grid-column: 2;
    grid-row: 6;
}

.element.lanthanum {
    grid-column: 3;
    grid-row: 9;
}

.element.hafnium {
    grid-column: 4;
    grid-row: 6;
}

.element.tantalum {
    grid-column: 5;
    grid-row: 6;
}

.element.tungsten {
    grid-column: 6;
    grid-row: 6;
}

.element.rhenium {
    grid-column: 7;
    grid-row: 6;
}

.element.osmium {
    grid-column: 8;
    grid-row: 6;
}

.element.iridium {
    grid-column: 9;
    grid-row: 6;
}

.element.platinum {
    grid-column: 10;
    grid-row: 6;
}

.element.gold {
    grid-column: 11;
    grid-row: 6;
}

.element.mercury {
    grid-column: 12;
    grid-row: 6;
}

.element.thallium {
    grid-column: 13;
    grid-row: 6;
}

.element.lead {
    grid-column: 14;
    grid-row: 6;
}

.element.bismuth {
    grid-column: 15;
    grid-row: 6;
}

.element.polonium {
    grid-column: 16;
    grid-row: 6;
}

.element.astatine {
    grid-column: 17;
    grid-row: 6;
}

.element.radon {
    grid-column: 18;
    grid-row: 6;
}

/* 第七周期 */
.element.francium {
    grid-column: 1;
    grid-row: 7;
}

.element.radium {
    grid-column: 2;
    grid-row: 7;
}

.element.actinium {
    grid-column: 3;
    grid-row: 10;
}

.element.rutherfordium {
    grid-column: 4;
    grid-row: 7;
}

.element.dubnium {
    grid-column: 5;
    grid-row: 7;
}

.element.seaborgium {
    grid-column: 6;
    grid-row: 7;
}

.element.bohrium {
    grid-column: 7;
    grid-row: 7;
}

.element.hassium {
    grid-column: 8;
    grid-row: 7;
}

.element.meitnerium {
    grid-column: 9;
    grid-row: 7;
}

.element.darmstadtium {
    grid-column: 10;
    grid-row: 7;
}

.element.roentgenium {
    grid-column: 11;
    grid-row: 7;
}

.element.copernicium {
    grid-column: 12;
    grid-row: 7;
}

.element.nihonium {
    grid-column: 13;
    grid-row: 7;
}

.element.flerovium {
    grid-column: 14;
    grid-row: 7;
}

.element.moscovium {
    grid-column: 15;
    grid-row: 7;
}

.element.livermorium {
    grid-column: 16;
    grid-row: 7;
}

.element.tennessine {
    grid-column: 17;
    grid-row: 7;
}

.element.oganesson {
    grid-column: 18;
    grid-row: 7;
}

/* 镧系标签 */
.lanthanide-label {
    grid-column: 1 / span 2;;
    grid-row: 9;
    display: flex;
    align-items: center;
    font-size: max(0.16rem,12px);
    color: #666;
    padding-left: 0.05rem;
    justify-content: space-around;
}

/* 镧系元素 */
.element.cerium {
    grid-column: 4;
    grid-row: 9;
}

.element.praseodymium {
    grid-column: 5;
    grid-row: 9;
}

.element.neodymium {
    grid-column: 6;
    grid-row: 9;
}

.element.promethium {
    grid-column: 7;
    grid-row: 9;
}

.element.samarium {
    grid-column: 8;
    grid-row: 9;
}

.element.europium {
    grid-column: 9;
    grid-row: 9;
}

.element.gadolinium {
    grid-column: 10;
    grid-row: 9;
}

.element.terbium {
    grid-column: 11;
    grid-row: 9;
}

.element.dysprosium {
    grid-column: 12;
    grid-row: 9;
}

.element.holmium {
    grid-column: 13;
    grid-row: 9;
}

.element.erbium {
    grid-column: 14;
    grid-row: 9;
}

.element.thulium {
    grid-column: 15;
    grid-row: 9;
}

.element.ytterbium {
    grid-column: 16;
    grid-row: 9;
}

.element.lutetium {
    grid-column: 17;
    grid-row: 9;
}

/* 锕系标签 */
.actinide-label {
    grid-column: 1 / span 2;;
    grid-row: 10;
    display: flex;
    align-items: center;
    font-size: max(0.16rem,12px);
    color: #666;
    padding-left: 0.05rem;
    justify-content: space-around;
}

/* 锕系元素 */
.element.thorium {
    grid-column: 4;
    grid-row: 10;
}

.element.protactinium {
    grid-column: 5;
    grid-row: 10;
}

.element.uranium {
    grid-column: 6;
    grid-row: 10;
}

.element.neptunium {
    grid-column: 7;
    grid-row: 10;
}

.element.plutonium {
    grid-column: 8;
    grid-row: 10;
}

.element.americium {
    grid-column: 9;
    grid-row: 10;
}

.element.curium {
    grid-column: 10;
    grid-row: 10;
}

.element.berkelium {
    grid-column: 11;
    grid-row: 10;
}

.element.californium {
    grid-column: 12;
    grid-row: 10;
}

.element.einsteinium {
    grid-column: 13;
    grid-row: 10;
}

.element.fermium {
    grid-column: 14;
    grid-row: 10;
}

.element.mendelevium {
    grid-column: 15;
    grid-row: 10;
}

.element.nobelium {
    grid-column: 16;
    grid-row: 10;
}

.element.lawrencium {
    grid-column: 17;
    grid-row: 10;
}

/* 镧系和锕系指示 */
.lanthanide-indicator {
    grid-column: 3;
    grid-row: 6;
    font-size: 0.14rem;
    color: white;;
    background : #ED975D; 
    font-weight: bold;
}

.actinide-indicator {
    grid-column: 3;
    grid-row: 7;
    font-size: 0.14rem;
    color: white;
    background: #4EAADD;
}

/* 文案展示区域 */
.info-display {
    grid-column: 3 / 13;
    grid-row: 1 / 4;
    padding: 0.2rem;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start;
    padding-top: 0;
    gap: 0.15rem;
}

.info-display h1 {
    font-size: 0.36rem;
    margin-bottom: 0.1rem;
    font-weight: bold;
}

.info-display p {
    font-size: 0.16rem;
    text-align: center;
    line-height: 1.6;
    max-width: 6rem;
}

@media screen and (max-width: 1025px) {
    .periodic-table {
        grid-template-columns: repeat(18, 0.36rem);
        grid-template-rows: repeat(10, 0.36rem);
        gap: 0.02rem;
    }

    .element {
        padding: 0.03rem;
    }

    .atomic-number {
        display: none;
    }
    .element .name {
        display: none;
    }
    .element a {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .symbol {
        font-size: 0.18rem;
        margin: 0.02rem 0;
    }

    .name {
        font-size: 0.07rem;
    }

    .lanthanide-label,
    .actinide-label {
        font-size: 0.1rem;
    }

    .info-display {
        grid-row: 1 / 4;
        padding: 0.2rem;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
    }

    .info-display h1 {
        font-size: 0.36rem;
        margin-bottom: 0.1rem;
        font-weight: bold;
    }

    .info-display p {
        font-size: 0.16rem;
        text-align: center;
        line-height: 1.6;
        max-width: 6rem;
    }
}