.element-container {
  margin: 1rem 0;
  position: relative;
}
.element-container h2 {
  color: #333;
  text-align: center;
  margin-bottom: 0.4rem;
}
.periodic-table {
  max-width: 15rem;
  display: grid;
  grid-template-columns: repeat(18, 0.785rem);
  grid-template-rows: repeat(7, 0.785rem) 0.45rem repeat(2, 0.785rem);
  gap: 0.043rem;
  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;
  min-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;
  }

  .element-container h2 {
    font-size: max(0.26rem, 26px);
  }
}