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

:root {
  --bg: #070708;
  --card: rgba(255, 255, 255, 0.045);
  --border: rgba(255, 255, 255, 0.10);
  --text: #f5f5f5;
  --muted: #92929a;
  --accent: #ffffff;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Inter", sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
}

.background {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
}

.grid {
  position: absolute;
  inset: 0;

  background-image:
    linear-gradient(
      rgba(255,255,255,.025) 1px,
      transparent 1px
    ),
    linear-gradient(
      90deg,
      rgba(255,255,255,.025) 1px,
      transparent 1px
    );

  background-size: 60px 60px;

  mask-image: linear-gradient(
    to bottom,
    black,
    transparent 75%
  );
}

.orb {
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  filter: blur(140px);
  opacity: .13;
}

.orb-1 {
  background: #ffffff;
  top: -300px;
  left: 20%;
}

.orb-2 {
  background: #777777;
  right: -250px;
  top: 30%;
}


/* NAVBAR */

.navbar {
  height: 80px;
  max-width: 1200px;
  margin: auto;

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

  padding: 0 25px;

  border-bottom: 1px solid rgba(255,255,255,.06);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;

  font-size: 19px;
  font-weight: 800;
}

.logo > span:last-child > span {
  color: #8f8f96;
}

.logo-icon {
  width: 31px;
  height: 31px;

  display: grid;
  place-items: center;

  border-radius: 9px;

  background: #fff;
  color: #000;

  font-size: 15px;
}

.nav-links {
  display: flex;
  gap: 35px;
}

.nav-links a {
  color: #8d8d95;
  text-decoration: none;
  font-size: 13px;

  transition: .25s;
}

.nav-links a:hover {
  color: white;
}

.nav-btn {
  background: white;
  border: none;
  color: black;

  padding: 11px 17px;
  border-radius: 9px;

  font-weight: 700;
  font-size: 12px;

  cursor: pointer;

  transition: .25s;
}

.nav-btn:hover {
  transform: translateY(-2px);
}


/* HERO */

.hero {
  max-width: 950px;
  margin: auto;

  padding: 130px 25px 110px;

  text-align: center;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 9px;

  padding: 8px 13px;

  border: 1px solid var(--border);
  border-radius: 100px;

  background: rgba(255,255,255,.035);

  color: #aaaab1;

  font-size: 12px;

  margin-bottom: 28px;
}

.pulse {
  width: 7px;
  height: 7px;

  background: #fff;

  border-radius: 50%;

  box-shadow: 0 0 15px white;

  animation: pulse 1.8s infinite;
}

@keyframes pulse {
  50% {
    opacity: .3;
    transform: scale(.7);
  }
}

.hero h1 {
  font-size: clamp(48px, 7vw, 84px);

  line-height: .98;

  letter-spacing: -5px;

  font-weight: 800;
}

.hero h1 span {
  display: block;

  background: linear-gradient(
    90deg,
    #fff,
    #707078
  );

  -webkit-background-clip: text;
  background-clip: text;

  color: transparent;
}

.hero-text {
  max-width: 620px;
  margin: 28px auto;

  color: var(--muted);

  line-height: 1.7;
  font-size: 16px;
}

.hero-btn,
.analyze-btn {
  border: none;

  background: #fff;
  color: #000;

  padding: 15px 23px;

  border-radius: 10px;

  font-size: 14px;
  font-weight: 700;

  cursor: pointer;

  transition: .25s;
}

.hero-btn span {
  margin-left: 10px;
}

.hero-btn:hover,
.analyze-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 40px rgba(255,255,255,.12);
}

.trust {
  display: flex;
  justify-content: center;
  gap: 20px;

  margin-top: 25px;

  color: #696970;

  font-size: 11px;
}

.trust span {
  color: #bbb;
}


/* GENERAL */

section {
  max-width: 1100px;
  margin: auto;

  padding: 100px 25px;
}

.section-label {
  font-size: 10px;
  letter-spacing: 2px;
  color: #68686f;

  margin-bottom: 18px;
}

section h2 {
  font-size: 38px;
  letter-spacing: -2px;

  margin-bottom: 13px;
}

.section-subtitle {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}


/* UPLOAD */

.upload-section {
  text-align: center;
}

.upload-box {
  max-width: 700px;
  min-height: 270px;

  margin: 45px auto 25px;

  border: 1px dashed #3a3a3f;

  border-radius: 18px;

  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;

  background: rgba(255,255,255,.025);

  cursor: pointer;

  transition: .3s;
}

.upload-box:hover,
.upload-box.dragging {
  border-color: #aaa;
  background: rgba(255,255,255,.05);

  transform: scale(1.01);
}

.upload-icon {
  width: 55px;
  height: 55px;

  border-radius: 15px;

  display: grid;
  place-items: center;

  background: white;
  color: black;

  font-size: 25px;

  margin-bottom: 18px;
}

.upload-box h3 {
  font-size: 17px;
  margin-bottom: 7px;
}

.upload-box p {
  color: #777;
  font-size: 13px;
}

.upload-box p span {
  color: white;
}

.upload-box small {
  margin-top: 15px;
  color: #555;
  font-size: 10px;
}

.file-preview {
  max-width: 700px;
  margin: 0 auto 20px;

  display: none;

  align-items: center;
  gap: 13px;

  padding: 14px 17px;

  border: 1px solid var(--border);
  border-radius: 12px;

  background: var(--card);

  text-align: left;
}

.file-icon {
  font-size: 25px;
}

.file-info {
  display: flex;
  flex-direction: column;
  flex: 1;
}

.file-info strong {
  font-size: 13px;
}

.file-info span {
  color: #666;
  font-size: 10px;
  margin-top: 3px;
}

.file-preview button {
  border: none;
  background: none;

  color: #888;

  font-size: 23px;

  cursor: pointer;
}

.analyze-btn {
  display: none;
}


/* RESULTS */

.results {
  display: none;
}

.results.visible {
  display: block;
  animation: reveal .6s ease;
}

@keyframes reveal {
  from {
    opacity: 0;
    transform: translateY(25px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.results-header {
  display: flex;
  justify-content: space-between;
  align-items: center;

  margin-bottom: 35px;
}

.results-header p {
  color: var(--muted);
  font-size: 13px;
}

.score-card {
  display: flex;
  align-items: center;
  gap: 13px;

  padding: 13px 17px;

  border: 1px solid var(--border);
  border-radius: 13px;

  background: var(--card);
}

.score-circle {
  width: 57px;
  height: 57px;

  border-radius: 50%;

  display: grid;
  place-items: center;

  background:
    radial-gradient(
      circle,
      #090909 63%,
      transparent 64%
    );

  border: 2px solid #ddd;
}

.score-circle span {
  font-size: 16px;
  font-weight: 800;
}

.score-card small {
  color: #777;
  font-size: 10px;
}

.score-card strong {
  font-size: 10px;
  color: #aaa;
}


/* STATS */

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);

  border: 1px solid var(--border);
  border-radius: 15px;

  overflow: hidden;

  margin-bottom: 20px;
}

.stat {
  padding: 25px;

  display: flex;
  flex-direction: column;
  gap: 5px;

  background: rgba(255,255,255,.025);

  border-right: 1px solid var(--border);
}

.stat:last-child {
  border-right: none;
}

.stat-number {
  font-size: 27px;
  font-weight: 800;
}

.stat span:last-child {
  color: #777;
  font-size: 11px;
}

.red {
  color: #ff7777;
}

.yellow {
  color: #e5c77a;
}

.green {
  color: #78d59b;
}


/* ISSUES */

.issue-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.issue {
  border: 1px solid var(--border);
  border-radius: 15px;

  background: rgba(255,255,255,.025);

  overflow: hidden;
}

.issue-top {
  padding: 18px 20px;

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

.issue-title {
  display: flex;
  align-items: center;
  gap: 10px;

  font-size: 13px;
  font-weight: 600;
}

.issue-dot {
  width: 7px;
  height: 7px;

  border-radius: 50%;
  background: #aaa;
}

.critical .issue-dot {
  background: #ff7777;
}

.warning .issue-dot {
  background: #e5c77a;
}

.good .issue-dot {
  background: #78d59b;
}

.tag {
  padding: 5px 9px;

  border-radius: 5px;

  font-size: 9px;
}

.critical-tag {
  color: #ff9292;
  background: rgba(255,100,100,.08);
}

.warning-tag {
  color: #d7bc73;
  background: rgba(220,180,70,.08);
}

.good-tag {
  color: #79d59a;
  background: rgba(80,220,130,.08);
}

.issue-body {
  padding: 0 20px 20px;

  color: #888;

  font-size: 12px;
  line-height: 1.7;
}

.issue-body strong {
  color: #ddd;
}

.notice {
  display: flex;
  flex-direction: column;
  gap: 3px;

  padding: 13px;

  margin-top: 15px;

  border-left: 2px solid #555;

  background: rgba(255,255,255,.025);
}

.notice strong {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.notice span {
  color: #777;
}

.suggestion {
  margin-top: 15px;

  padding: 17px;

  border: 1px solid #29292d;

  border-radius: 10px;

  background: rgba(255,255,255,.025);
}

.suggestion-title {
  color: #ddd;
  font-size: 11px;
  font-weight: 700;

  margin-bottom: 7px;
}

.fix-btn {
  margin-top: 12px;

  background: white;
  color: black;

  border: none;

  padding: 8px 12px;

  border-radius: 7px;

  font-size: 10px;
  font-weight: 700;

  cursor: pointer;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;

  margin-top: 15px;
}

.chips span {
  padding: 6px 9px;

  border-radius: 5px;

  border: 1px solid #29292d;

  color: #aaa;

  font-size: 10px;
}

.comparison {
  display: grid;
  grid-template-columns: 1fr 30px 1fr;
  align-items: center;

  gap: 15px;
}

.comparison > div {
  padding: 15px;

  border-radius: 10px;

  background: rgba(255,255,255,.025);
}

.comparison label {
  font-size: 8px;
  letter-spacing: 1.5px;

  color: #666;
}

.comparison p {
  margin-top: 8px;
}

.arrow {
  text-align: center;
  color: white;
}


/* FEATURES */

.features {
  border-top: 1px solid rgba(255,255,255,.06);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);

  gap: 12px;

  margin-top: 45px;
}

.feature-card {
  padding: 25px;

  min-height: 220px;

  border: 1px solid var(--border);
  border-radius: 15px;

  background: rgba(255,255,255,.025);

  transition: .3s;
}

.feature-card:hover {
  transform: translateY(-5px);

  background: rgba(255,255,255,.05);
}

.feature-icon {
  font-size: 25px;
  margin-bottom: 35px;
}

.feature-card h3 {
  font-size: 14px;
  margin-bottom: 10px;
}

.feature-card p {
  color: #777;

  font-size: 11px;
  line-height: 1.7;
}


/* HOW */

.how {
  border-top: 1px solid rgba(255,255,255,.06);
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);

  margin-top: 50px;

  gap: 12px;
}

.step {
  padding: 30px;

  border-top: 1px solid #29292d;
}

.step span {
  color: #555;
  font-size: 11px;
}

.step h3 {
  margin-top: 35px;
  font-size: 17px;
}

.step p {
  margin-top: 8px;

  color: #777;
  font-size: 12px;
}


/* FOOTER */

footer {
  max-width: 1100px;

  margin: auto;

  padding: 50px 25px;

  border-top: 1px solid rgba(255,255,255,.06);

  display: flex;
  align-items: center;
  gap: 20px;
}

footer p {
  color: #666;
  font-size: 11px;

  flex: 1;
}

.copyright {
  color: #444;
  font-size: 10px;
}


/* TOAST */

.toast {
  position: fixed;

  bottom: 25px;
  right: 25px;

  padding: 13px 18px;

  background: white;
  color: black;

  border-radius: 9px;

  font-size: 11px;
  font-weight: 600;

  transform: translateY(100px);
  opacity: 0;

  transition: .3s;

  z-index: 100;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}


/* MOBILE */

@media (max-width: 800px) {

  .nav-links {
    display: none;
  }

  .hero {
    padding-top: 90px;
  }

  .hero h1 {
    letter-spacing: -3px;
  }

  .trust {
    flex-wrap: wrap;
  }

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

  .stat {
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .stat:last-child {
    border-bottom: none;
  }

  .feature-card {
    min-height: auto;
  }

  .results-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 20px;
  }

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

  .arrow {
    transform: rotate(90deg);
  }

  footer {
    flex-wrap: wrap;
  }
}
```