* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: #ffffff;
  color: #111111;
  font-family:
    Inter,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
}


/* NAVIGATION */

.navbar {
  height: 78px;
  padding: 0 6vw;

  display: flex;
  align-items: center;
  justify-content: space-between;

  border-bottom: 1px solid #eeeeee;

  position: sticky;
  top: 0;

  background: rgba(255, 255, 255, 0.95);

  backdrop-filter: blur(12px);

  z-index: 10;
}

.logo {
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.18em;
}

.nav-button {
  border: none;
  background: none;

  font-size: 14px;
  font-weight: 600;

  cursor: pointer;
}


/* HERO */

.hero {
  min-height: 700px;

  padding:
    130px
    8vw
    110px;

  max-width: 1150px;
}

.eyebrow,
.section-label {
  font-size: 11px;

  letter-spacing: 0.2em;

  font-weight: 800;

  color: #777777;
}

.hero h1 {
  font-size: clamp(55px, 8vw, 96px);

  line-height: 0.98;

  letter-spacing: -0.055em;

  margin:
    25px 0
    28px;
}

.hero h1 span {
  color: #777777;
}

.hero-text {
  max-width: 650px;

  font-size: 21px;

  line-height: 1.55;

  color: #555555;

  margin-bottom: 38px;
}


/* BUTTON */

.primary-button {
  border: none;

  background: #111111;

  color: white;

  padding:
    16px
    22px;

  border-radius: 6px;

  font-size: 14px;

  font-weight: 700;

  cursor: pointer;

  transition:
    transform .15s ease,
    opacity .15s ease;
}

.primary-button:hover {
  transform: translateY(-2px);
  opacity: .9;
}

.primary-button span {
  margin-left: 20px;
}

.small-text {
  margin-top: 18px;

  color: #999999;

  font-size: 12px;
}


/* ANALYZER */

.analyzer {
  margin: 0 6vw;

  padding:
    90px
    6vw;

  border-top: 1px solid #eeeeee;

  border-bottom: 1px solid #eeeeee;
}

.analyzer h2 {
  font-size: 50px;

  letter-spacing: -0.04em;

  margin:
    15px 0;
}

.section-description {
  max-width: 650px;

  color: #666666;

  line-height: 1.6;
}

.input-area {
  display: flex;

  gap: 10px;

  max-width: 850px;

  margin-top: 32px;
}

.input-area input {
  flex: 1;

  border: 1px solid #dddddd;

  border-radius: 6px;

  padding: 16px;

  font-size: 15px;

  outline: none;
}

.input-area input:focus {
  border-color: #111111;
}


/* RESULT */

.result {
  max-width: 850px;

  margin-top: 25px;

  border: 1px solid #dddddd;

  border-radius: 8px;

  padding: 30px;
}

.hidden {
  display: none;
}

.result-header {
  display: flex;

  align-items: flex-start;

  justify-content: space-between;
}

.score {
  font-size: 55px;

  font-weight: 800;

  margin-top: 7px;
}

.status {
  border: 1px solid #dddddd;

  border-radius: 30px;

  padding:
    9px
    13px;

  font-size: 11px;

  font-weight: 800;

  letter-spacing: .1em;
}

.result-grid {
  display: grid;

  grid-template-columns:
    repeat(4, 1fr);

  gap: 20px;

  margin-top: 30px;
}

.result-grid div {
  border-top: 1px solid #111111;

  padding-top: 12px;
}

.result-grid span {
  display: block;

  font-size: 12px;

  color: #888888;

  margin-bottom: 8px;
}

.result-grid strong {
  font-size: 14px;
}


/* FEATURES */

.features {
  padding:
    100px
    8vw;
}

.feature-grid {
  display: grid;

  grid-template-columns:
    repeat(4, 1fr);

  gap: 25px;

  margin-top: 35px;
}

.feature-grid article {
  border-top: 1px solid #111111;

  padding-top: 18px;
}

.feature-grid h3 {
  font-size: 19px;

  margin:
    0
    0
    10px;
}

.feature-grid p {
  font-size: 14px;

  color: #666666;

  line-height: 1.55;
}


/* PRINCIPLE */

.principle {
  padding:
    120px
    8vw;

  background: #fafafa;
}

.principle h2 {
  max-width: 1050px;

  font-size: clamp(36px, 5vw, 65px);

  letter-spacing: -0.045em;

  line-height: 1.05;

  margin-top: 22px;
}

.principle h2 span {
  color: #777777;
}


/* FOOTER */

footer {
  padding:
    35px
    8vw;

  font-size: 12px;

  color: #999999;
}


/* MOBILE */

@media (max-width: 800px) {

  .hero {
    padding-top: 90px;
  }

  .feature-grid {
    grid-template-columns:
      repeat(2, 1fr);
  }

  .result-grid {
    grid-template-columns:
      repeat(2, 1fr);
  }

}


@media (max-width: 550px) {

  .navbar {
    padding: 0 5vw;
  }

  .hero,
  .features,
  .principle {
    padding-left: 5vw;
    padding-right: 5vw;
  }

  .analyzer {
    margin: 0;
    padding:
      70px
      5vw;
  }

  .input-area {
    flex-direction: column;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .result-grid {
    grid-template-columns: 1fr;
  }

}