* {
  padding: 0px;
  margin: 0px;
  box-sizing: border-box; }

  body {
    display: flex;
    flex-direction: column;
    min-height: 100vh; }
    body main {
      flex: 1; }

img.icon {
  width: 3.5rem; }

  .menu {
    line-height: 1.5em; }
    .menu a {
      color: #fff;
      text-decoration: none; }
      .menu svg {
        width: 2em;
        height: 2em;
        cursor: pointer; }
        .menu .icon {
          display: flex;
          justify-content: space-around;
          align-items: center; }
          .menu #menu-switch {
            transition: all 0.3s ease; }
            .menu .active {
              display: block !important; }
              .menu .menu-icon-active {
                transform: rotate(90deg); }
                .menu .menu-body {
                  overflow: hidden;
                  transition: max-height 1s ease;
                  max-height: 0px !important; }
                  .menu .menu-body.active {
                    max-height: 50vh !important; }
                    .menu .menu-body a.current {
                      text-decoration: underline; }
    .menu ul li {
      margin: 1em 0em; }
      .menu ul li:hover {
        text-decoration: underline; }

.content h1, .content h2, .content h3, .content h4, .content h5, .content h6 {
  margin: 1em 0em; }
  .content .tip {
    margin: 0.5em auto;
    font-size: 0.9em;
    color: gray;
    text-align: center; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue',
    Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background: var(--light-bg); }

  .container {
    max-width: 100vw;
    margin: 0 auto;
    padding: 0 var(--container-padding); }

    header {
      position: sticky;
      top: 0em;
      left: 0em;
      text-align: center;
      padding: 0.5em 0em 1em;
      background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
      color: white;
      overflow: hidden;
      z-index: 99; }

      header::after {
        content: '';
        position: absolute;
        bottom: -10px;
        left: 0;
        right: 0;
        height: 20px;
        background: white;
        border-radius: 50% 50% 0 0; }

        h1 {
          font-size: 3rem;
          margin-bottom: 1rem;
          letter-spacing: -0.5px; }

          .subtitle {
            font-size: 1.4rem;
            opacity: 0.9;
            max-width: 700px;
            margin: 0 auto; }

            .tools-container {
              margin: 1em auto; }

              .tool {
                background: white;
                border-radius: 12px;
                box-shadow: var(--card-shadow);
                margin-bottom: 3rem;
                overflow: hidden;
                transition: all 0.3s ease; }

                .tool:hover {
                  transform: translateY(-5px);
                  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1); }

                  .tool-header {
                    padding: 2rem;
                    display: flex;
                    align-items: center;
                    justify-content: space-between; }

                    .tool-title {
                      display: flex;
                      align-items: center; }

                      .tool-icon {
                        display: flex;
                        align-items: center;
                        font-size: 2.5rem;
                        margin-right: 1rem; }
                        .tool-icon img {
                          width: 2rem;
                          height: 2rem; }

.tool-name {
  font-size: 2rem;
  color: var(--primary-dark); }

  .tool-content {
    padding: 0 2rem 2rem; }

    .tool-description {
      margin-bottom: 1.5rem;
      font-size: 1.1rem; }

      .tool-features {
        margin-bottom: 1.5rem; }

        .tool-features h3 {
          margin-bottom: 1rem;
          color: var(--primary-color); }

          .feature-list {
            list-style: none; }

            .feature-list li {
              padding: 0.5rem 0;
              display: flex;
              align-items: flex-start; }

              .feature-icon {
                color: var(--primary-color);
                margin-right: 0.75rem;
                font-weight: bold; }

                .tool-image {
                  width: 100%;
                  border-radius: 8px;
                  margin: 1rem 0;
                  box-shadow: var(--card-shadow); }

                  .button {
                    display: inline-block;
                    padding: 0.75rem 1.5rem;
                    background: var(--primary-color);
                    color: white;
                    text-decoration: none;
                    border-radius: 50px;
                    font-weight: bold;
                    transition: all 0.3s ease;
                    box-shadow: 0 4px 6px rgba(30, 136, 229, 0.3); }

                    .button:hover {
                      background: var(--primary-dark);
                      transform: translateY(-3px);
                      box-shadow: 0 7px 14px rgba(30, 136, 229, 0.4); }

                      .button.secondary {
                        background: var(--secondary-color);
                        box-shadow: 0 4px 6px rgba(255, 87, 34, 0.3); }

                        .button.secondary:hover {
                          background: var(--secondary-dark);
                          box-shadow: 0 7px 14px rgba(255, 87, 34, 0.4); }

                          footer {
                            display: flex;
                            justify-content: center;
                            align-items: center;
                            width: 100%;
                            padding: 4em 0px;
                            margin-top: 2em;
                            border-top: 1px solid rgba(190, 187, 187, 0.269);
                            gap: 4em;
                            background: #f0f4f8; }
                            footer .footer-item {
                              display: flex;
                              justify-content: center;
                              align-items: center; }
                              footer .footer-item a {
                                color: var(--primary-color);
                                display: flex;
                                justify-content: center;
                                align-items: center;
                                text-decoration: none; }
                                footer .footer-item svg {
                                  width: 1em;
                                  height: 1em;
                                  border-radius: 3px;
                                  fill: var(--primary-color); }

.tool:nth-child(2) .tool-name {
  color: var(--thirdth-color); }

  .tool:nth-child(2) .feature-icon {
    color: var(--thirdth-color); }

    .tool:nth-child(2) .tool-features h3 {
      color: var(--thirdth-color); }

      .tool:nth-child(3) .tool-name {
        color: var(--secondary-dark); }

        .tool:nth-child(3) .feature-icon {
          color: var(--secondary-color); }

          .tool:nth-child(3) .tool-features h3 {
            color: var(--secondary-color); }

            .tool-footer {
              display: flex;
              justify-content: center;
              margin: 1em; }