@import url('https://fonts.googleapis.com/css2?family=Roboto:ital,wght@0,100..900;1,100..900&display=swap" rel="stylesheet');

.hide {
  display: none;
}

:root {
  --font-main: 'roboto';
  --color-font-header-logo: #f9faf8;
  --color-font-header-menu: #e5e7eb;
  --color-bg-header: #161e29;
  --color-bg-dark: #1f2937;
  --color-font-banner-1st: #f9faf8;
  --color-font-banner-2nd: #e5e7eb;
  --color-font-banner-3rd: #b9c8e7;
  --color-btn-1: #3882f6;
  --color-info-txt: #1f2937;
  --color-quote-bg: #e5e7eb;
  --color-quote-txt: #1f2937;
}

* {
  box-sizing: border-box;
  text-decoration: none;
  list-style: none;
  list-style-type: none;
  margin-block-start: 0;
  margin-block-end: 0;
  padding-inline-start: 0;
  font-family: var(--font-main), 'lato', 'Franklin Gothic Medium', 'Arial Narrow', Arial, sans-serif;
}

body {
  margin: 0;
  padding: 0;
}

header, footer {
  padding: 1vh 15vw;
  background: var(--color-bg-header);
}

.sec1, .sec2, .sec3, .sec4 {
  padding: 7vh 15vw 9vh 15vw;
}

header {
  display: flex;
  position: sticky;
  top: 0;
  
  .header_logo {
    width: 35%;
    font-size: 24px;
    color: var(--color-font-header-logo);
    cursor: pointer;
    font-weight: 900;
  }

  .header_logo:hover {
    color: var(--color-btn-1);
  }

  .header_menu {
    width: 65%;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 0.5rem;

    li {
      width: 70px;
      height: 45px;
      padding: 0;
      margin: 0;
      cursor: pointer;
      border-radius: 0.2rem;

      a {
        width: 70px;
        height: 45px;
        color: var(--color-font-header-menu);
      }

      a:hover {
        color: var(--color-btn-1);
        /* font-weight: 900; */
      }
    }
  }

}

.sec1 {
  display: flex;
  gap: 2rem;
  background: var(--color-bg-dark);

  .s1_r1_c1, .s1_r1_c2 {
    width: 50%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
  }

  .s1_r1_c1 {
    gap: 1rem;
    h1 {
      color: var(--color-font-banner-1st);
      font-size: 48px;
      font-weight: 900;
    }

    .mobile {
      display: none;
    }
  
    p {
      color: var(--color-font-banner-2nd);
    }
  
    .btn_signup_1, .btn_see_video {
      width: 7rem;
      border-radius: 0.3rem;
      padding: 0.4rem;
      font-size: 18px;
      border-width: 0.1rem;
      border-color: var(--color-btn-1);
      color: var(--color-font-banner-2nd);
      background-color: var(--color-btn-1);
      cursor: pointer;
    }
  
    .prep_info {
      font-style: italic;
      color: var(--color-font-banner-2nd);
      background-color: #2f3e53;
      padding: 1rem;
    }
  
    .btn_see_video {
      align-self: flex-end;
    }
  
    .btn_signup_1:hover, .btn_see_video:hover {
      color: var(--color-btn-1);
      background-color: var(--color-font-banner-2nd);
      border-width: 0.1rem;
      border-color: var(--color-btn-1);
      font-weight: bolder;
    }
  }
  .s1_r1_c2 {
    min-height: 100%;
    background-color: #3882f6;

    img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
  }

}

.sec2 {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  
  .s2_r1 {
    text-align: center;

    h2 {
      color: var(--color-2);
      font-size: 36px;
      font-weight: 900;
    }

  }

  .s2_r2 {
    display: flex;
    padding: 1rem 0;
    gap: 5rem;
    justify-content: center;

    .info_item {
      display: flex;
      flex-direction: column;
      width: 8rem;
      align-items: center;
      text-align: center;
      gap: 0.5rem;

      img {
        width: 16vh;
        height: 16vh;
        border-radius: 1rem;
      }
    }
  }
}

.sec3 {
  display: flex;
  flex-direction: column;
  background-color: var(--color-quote-bg);
  padding: 5% 20%;
  gap: 1rem;

  p {
    font-style: italic;
    font-size: 32px;
    font-weight: 300;
  }

  span {
    align-self: flex-end;
    font-weight: 700;
  }
}

.sec4 {
  display: flex;

  .s4_modal {
    display: flex;
    background-color: var(--color-btn-1);
    width: 100%;
    padding: 3rem 5rem;
    justify-content: space-between;
    border-radius: 0.5rem;
    gap: 2rem;

    .s4_modal_info {
      width: 70%;
      h3, p {
        color: var(--color-font-banner-2nd);
      }
    }

    .s4_modal_btn {
      .btn_signup_2 {
        color: var(--color-font-banner-2nd);
        background-color: var(--color-btn-1);
        border: solid 2px var(--color-font-banner-1st);
        border-radius: 0.3rem;
        padding: 0.5rem 1rem;
      }

      .btn_signup_2:hover {
        color: var(--color-btn-1);
        font-weight: 700;
        background-color: var(--color-font-banner-1st);
        border: solid 2px var(--color-btn-1);
        cursor: pointer;
      }
    }
  }
}

footer {
  color: var(--color-font-header-menu);
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 18px;

  img {
    width: 2rem;
    padding: 0.4rem;
  }
  
}


@media screen and (max-width: 900px) {

  .sec2 {
    .s2_r2 {
      gap: 1.5rem;

      .info_item {
        img {
          width: 12vh;
          height: 12vh;
          border-radius: 1rem;
        }
      }
    }
  }
}



@media screen and (max-width: 768px) {

  header {
    flex-direction: column;
    gap: 0.5rem;

    .header_logo, .header_menu {
      width: 100%;
    }

    .header_logo {
      color: var(--color-font-banner-3rd);
    }

    .header_menu {
      justify-content: space-between;
    }
  }

  .sec2 {
    .s2_r2 {
      gap: 2rem;
      flex-wrap: wrap;

      .info_item {
        width: 22vh;
        height: 22vh;

        img {
          width: 20vh;
          height: 20vh;
          border-radius: 1rem;
        }
      }
    }
  }

  .sec4 {
    .s4_modal {
      padding: 2rem 3rem;
    }
  }
}

@media screen and (max-width: 650px) {
  
  header, footer {
    padding: 1.5vh 10vw;
  }

  .sec1, .sec2, .sec3, .sec4 {
    padding: 4vh 10vw 9vh 10vw;
  }


  .sec1 {
    flex-direction: column;
    width: 100%;

    .s1_r1_c1, .s1_r1_c2 {
      width: 100%;
    }

    .pc {
      display: none;
    }
    
  }

  .sec1 > .s1_r1_c1 > .mobile {
    display: flex;
  }

  .sec4 {
    .s4_modal {
      padding: 2rem 3rem;

      .s4_modal_info {
        width: 60%;
      }
    }
  }

}