:root {
  --bg: #0b1220;
  --panel: #101a2f;
  --panel-2: #0e1730;
  --text: #eaf0ff;
  --muted: rgba(234, 240, 255, 0.72);
  --border: rgba(234, 240, 255, 0.14);
  --brand: #63b3ff;
  --brand-2: #7c4dff;
  --good: #25c06d;
  --warn: #f3b21b;
  --bad: #ff4d6d;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  --radius: 14px;
  --max: 1120px;
  --font: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Noto Sans", "Liberation Sans", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: radial-gradient(1200px 700px at 20% -10%, rgba(99, 179, 255, 0.22), rgba(99, 179, 255, 0)) ,
    radial-gradient(900px 600px at 100% 10%, rgba(124, 77, 255, 0.18), rgba(124, 77, 255, 0)) ,
    var(--bg);
  line-height: 1.55;
}

a {
  color: inherit;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 18px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(10px);
  background: rgba(11, 18, 32, 0.65);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  min-height: 64px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 750;
  letter-spacing: 0.2px;
}

.brand-badge {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(99, 179, 255, 1), rgba(124, 77, 255, 1));
  box-shadow: var(--shadow);
}

.nav {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--muted);
  font-weight: 600;
}

.nav a {
  padding: 8px 10px;
  border-radius: 10px;
}

.nav a[aria-current="page"] {
  background: rgba(99, 179, 255, 0.16);
  color: var(--text);
}

.nav details {
  position: relative;
}

.nav details > summary {
  list-style: none;
  cursor: pointer;
  padding: 8px 10px;
  border-radius: 10px;
  user-select: none;
}

.nav details > summary::-webkit-details-marker {
  display: none;
}

.nav details[open] > summary {
  background: rgba(234, 240, 255, 0.08);
  color: var(--text);
}

.nav-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  width: min(360px, calc(100vw - 36px));
  background: rgba(16, 26, 47, 0.98);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 10px;
  box-shadow: var(--shadow);
}

.nav-menu a {
  display: block;
  padding: 10px 10px;
  border-radius: 12px;
  color: var(--text);
}

.nav-menu a:hover {
  background: rgba(234, 240, 255, 0.08);
  text-decoration: none;
}

.main {
  padding: 34px 0 54px;
}

.hero {
  padding: 28px 0 22px;
}

.hero h1 {
  margin: 0 0 12px;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.08;
  letter-spacing: -0.8px;
}

.hero p {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 16px;
  max-width: 74ch;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid rgba(234, 240, 255, 0.16);
  background: rgba(234, 240, 255, 0.06);
  color: var(--text);
  font-weight: 750;
  letter-spacing: 0.2px;
  cursor: pointer;
  text-decoration: none;
}

.btn:hover {
  background: rgba(234, 240, 255, 0.1);
  text-decoration: none;
}

.btn-primary {
  border-color: rgba(99, 179, 255, 0.55);
  background: linear-gradient(135deg, rgba(99, 179, 255, 0.9), rgba(124, 77, 255, 0.8));
}

.btn-primary:hover {
  filter: brightness(1.06);
}

.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 14px;
}

.card {
  grid-column: span 12;
  background: rgba(16, 26, 47, 0.75);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
}

.card h2,
.card h3 {
  margin: 0 0 8px;
  letter-spacing: -0.2px;
}

.card p {
  margin: 0 0 12px;
  color: var(--muted);
}

.cards-2 .card {
  grid-column: span 12;
}

.cards-3 .card {
  grid-column: span 12;
}

.section-title {
  margin: 28px 0 12px;
  font-size: 20px;
  letter-spacing: -0.3px;
}

.list {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}

.tool-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  color: var(--muted);
  font-size: 13px;
}

.panel {
  background: rgba(16, 26, 47, 0.75);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
}

form {
  display: grid;
  gap: 12px;
}

.form-row {
  display: grid;
  gap: 8px;
}

label {
  font-weight: 750;
  letter-spacing: 0.1px;
}

input,
select,
textarea {
  width: 100%;
  padding: 10px 12px;
  background: rgba(14, 23, 48, 0.75);
  color: var(--text);
  border: 1px solid rgba(234, 240, 255, 0.16);
  border-radius: 12px;
  outline: none;
}

input:focus,
select:focus,
textarea:focus {
  border-color: rgba(99, 179, 255, 0.8);
  box-shadow: 0 0 0 3px rgba(99, 179, 255, 0.2);
}

.checkbox {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid rgba(234, 240, 255, 0.14);
  background: rgba(14, 23, 48, 0.4);
}

.checkbox input {
  width: 18px;
  height: 18px;
  margin: 2px 0 0;
}

.help {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.error {
  color: rgba(255, 77, 109, 0.95);
  font-weight: 700;
  font-size: 13px;
}

.result {
  margin-top: 14px;
  border-top: 1px solid var(--border);
  padding-top: 14px;
}

.result-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.score {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.score .value {
  font-size: 42px;
  font-weight: 850;
  letter-spacing: -0.6px;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid rgba(234, 240, 255, 0.16);
  background: rgba(234, 240, 255, 0.06);
  font-weight: 800;
  letter-spacing: 0.3px;
  text-transform: uppercase;
  font-size: 12px;
}

.badge.low {
  border-color: rgba(37, 192, 109, 0.55);
  background: rgba(37, 192, 109, 0.12);
  color: rgba(173, 255, 212, 0.95);
}

.badge.medium {
  border-color: rgba(243, 178, 27, 0.6);
  background: rgba(243, 178, 27, 0.12);
  color: rgba(255, 238, 188, 0.98);
}

.badge.high {
  border-color: rgba(255, 77, 109, 0.7);
  background: rgba(255, 77, 109, 0.12);
  color: rgba(255, 192, 205, 0.98);
}

.kvs {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 10px;
  margin: 12px 0 0;
}

.kv {
  grid-column: span 12;
  padding: 12px;
  border-radius: 12px;
  border: 1px solid rgba(234, 240, 255, 0.12);
  background: rgba(14, 23, 48, 0.35);
}

.kv .k {
  color: var(--muted);
  font-weight: 700;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

.kv .v {
  margin-top: 4px;
  font-weight: 850;
  letter-spacing: -0.2px;
}

.cta-panel {
  margin-top: 14px;
  padding: 14px;
  border-radius: 14px;
  border: 1px solid rgba(99, 179, 255, 0.4);
  background: linear-gradient(135deg, rgba(99, 179, 255, 0.12), rgba(124, 77, 255, 0.1));
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 24px 0;
  color: var(--muted);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 10px;
}

.footer-links a {
  padding: 6px 10px;
  border-radius: 10px;
  border: 1px solid rgba(234, 240, 255, 0.12);
  background: rgba(234, 240, 255, 0.04);
}

.footer-links a:hover {
  background: rgba(234, 240, 255, 0.08);
  text-decoration: none;
}

@media (min-width: 720px) {
  .cards-2 .card {
    grid-column: span 6;
  }

  .cards-3 .card {
    grid-column: span 4;
  }

  .kv {
    grid-column: span 6;
  }
}

@media (min-width: 980px) {
  .kv {
    grid-column: span 4;
  }
}