:root {
  color-scheme: dark;
  --bg: #071622;
  --panel: rgba(255, 255, 255, 0.085);
  --panel-strong: rgba(255, 255, 255, 0.13);
  --text: #eef8fb;
  --muted: #9db6bf;
  --line: rgba(255, 255, 255, 0.16);
  --signal: #5cebe1;
  --good: #78f29d;
  --warn: #ffd166;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.34);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    linear-gradient(145deg, rgba(92, 235, 225, 0.12) 0%, transparent 32%),
    linear-gradient(215deg, rgba(120, 242, 157, 0.10) 0%, transparent 34%),
    linear-gradient(135deg, #06111d 0%, #0a1d2e 48%, #061b1c 100%);
}

a {
  color: inherit;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  max-width: 1180px;
  margin: 0 auto;
  padding: 1.25rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  background: #061622;
}

.brand-mark img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.brand small,
.fine-print,
footer,
.muted {
  color: var(--muted);
}

.brand strong,
.brand small {
  display: block;
}

nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.35rem;
}

nav a,
.button {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.68rem 0.95rem;
  text-decoration: none;
  font-weight: 750;
  font-size: 0.92rem;
  background: rgba(255, 255, 255, 0.06);
}

nav a[aria-current="page"] {
  color: #061622;
  background: var(--signal);
}

.hero,
.page-shell,
.calculator-band,
.feature-band,
.text-page {
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  gap: 3rem;
  align-items: center;
  min-height: calc(100vh - 110px);
  padding: 2rem 0 4rem;
}

h1,
h2,
p {
  margin-block-start: 0;
}

h1 {
  margin-block-end: 1rem;
  max-width: 760px;
  font-size: clamp(3rem, 8vw, 6.6rem);
  line-height: 0.94;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

h2 {
  font-size: clamp(1.35rem, 3vw, 2.25rem);
}

.lead {
  max-width: 680px;
  color: #cfe3e8;
  font-size: clamp(1.05rem, 2vw, 1.28rem);
  line-height: 1.6;
}

.status-line {
  display: inline-flex;
  margin-bottom: 1rem;
  color: var(--signal);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.78rem;
}

.hero-actions,
.calculator-band {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  flex-wrap: wrap;
  margin: 1.5rem 0 1rem;
}

.button.primary {
  color: #061622;
  background: linear-gradient(135deg, var(--signal), var(--good));
  border-color: transparent;
}

.button.secondary {
  color: var(--text);
}

.device-preview {
  display: grid;
  gap: 1rem;
  place-items: center;
}

.hero-icon {
  display: grid;
  width: min(280px, 72vw);
  aspect-ratio: 1;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.08);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.hero-icon img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.phone,
.tool-panel,
.result-panel,
.feature-band article,
.calculator-band,
.text-page {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.phone {
  width: min(390px, 100%);
  border-radius: 34px;
  padding: 1.2rem;
}

.phone-topline,
.mini-grid,
.result-panel dl div {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}

.phone-topline {
  margin-bottom: 1.5rem;
  color: var(--muted);
}

.score-orbit {
  display: grid;
  width: 168px;
  height: 168px;
  place-items: center;
  margin: 0 auto 1.5rem;
  border-radius: 999px;
  background:
    radial-gradient(circle, rgba(7, 22, 34, 0.96) 54%, transparent 55%),
    conic-gradient(var(--signal), var(--good), rgba(255, 255, 255, 0.12) 68%);
}

.score-orbit span {
  font-size: 3rem;
  font-weight: 900;
}

.score-orbit small {
  margin-top: -4.2rem;
  color: var(--muted);
}

.score-orbit.web {
  margin-bottom: 2rem;
}

.mini-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.mini-grid div,
.notice {
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.055);
}

.mini-grid strong,
.mini-grid span {
  display: block;
}

.mini-grid span,
.notice {
  color: var(--muted);
}

.feature-band {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  padding-bottom: 4rem;
}

.feature-band article,
.calculator-band,
.text-page,
.tool-panel,
.result-panel {
  border-radius: 24px;
  padding: 1.25rem;
  min-width: 0;
}

.feature-band .icon {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  margin-bottom: 1rem;
  border-radius: 12px;
  color: #061622;
  background: var(--signal);
  font-weight: 900;
}

.calculator-band {
  justify-content: space-between;
  margin-bottom: 4rem;
  background: var(--panel-strong);
}

.page-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 380px);
  gap: 1rem;
  align-items: start;
  padding: 2rem 0 4rem;
}

.calculator-form {
  display: grid;
  gap: 1rem;
}

.tool-panel h1 {
  font-size: 2.6rem;
  line-height: 1.04;
}

fieldset {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 1rem;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 1rem;
  min-width: 0;
}

legend {
  padding: 0 0.35rem;
  font-weight: 850;
}

label {
  display: grid;
  gap: 0.45rem;
  color: var(--muted);
  font-weight: 700;
  min-width: 0;
}

.check-row {
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  align-self: end;
  min-height: 44px;
}

.check-row input {
  width: 1.1rem;
  min-height: 1.1rem;
  accent-color: var(--signal);
}

.compound-field {
  display: grid;
  gap: 0.45rem;
  color: var(--muted);
  font-weight: 700;
  min-width: 0;
}

.time-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.6rem;
}

input,
select,
textarea {
  width: 100%;
  min-width: 0;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--text);
  background: rgba(0, 0, 0, 0.22);
  padding: 0.7rem 0.8rem;
  font: inherit;
}

textarea {
  resize: vertical;
  line-height: 1.5;
}

button.button {
  cursor: pointer;
}

button.button:disabled {
  cursor: not-allowed;
  opacity: 0.62;
}

[aria-invalid="true"] {
  border-color: var(--warn);
}

.contact-form,
.form-grid {
  display: grid;
  gap: 1rem;
}

.form-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.form-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.form-status {
  margin: 0;
  color: var(--muted);
}

.form-status[data-state="success"] {
  color: var(--good);
}

.form-status[data-state="error"] {
  color: var(--warn);
}

.honeypot {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.result-panel dl {
  display: grid;
  gap: 0.75rem;
}

.score-summary {
  display: grid;
  gap: 0.3rem;
  margin: -0.4rem 0 1rem;
  text-align: center;
}

.score-summary strong {
  font-size: 1.35rem;
}

.score-summary span {
  color: var(--muted);
  font-weight: 750;
}

.meta-grid {
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}

.result-panel dt {
  color: var(--muted);
}

.result-panel dd {
  margin: 0;
  font-weight: 850;
}

.component-results {
  margin-top: 1rem;
}

.component-result {
  display: grid !important;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: 1rem;
  align-items: start;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 0.9rem;
  background: rgba(255, 255, 255, 0.05);
}

.component-result dt,
.component-result dd {
  display: grid;
  gap: 0.25rem;
}

.component-result dt span,
.component-result dd span,
.component-result dd small,
.warning-list {
  color: var(--muted);
}

.component-result dt strong,
.component-result dd strong {
  color: var(--text);
}

.component-result dd small {
  line-height: 1.45;
}

.warning-list {
  display: grid;
  gap: 0.5rem;
  margin: 1rem 0;
  padding-left: 1.1rem;
}

.warning-list li::marker {
  color: var(--warn);
}

.text-page {
  margin-top: 2rem;
  margin-bottom: 4rem;
  max-width: 860px;
  line-height: 1.7;
}

footer {
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 2rem 0 3rem;
  border-top: 1px solid var(--line);
  font-size: 0.92rem;
}

@media (max-width: 820px) {
  .hero,
  .page-shell {
    grid-template-columns: 1fr;
  }

  .site-header {
    flex-direction: column;
    align-items: flex-start;
    overflow: hidden;
  }

  .hero {
    min-height: auto;
  }

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

  fieldset {
    grid-template-columns: 1fr;
  }

  .tool-panel h1 {
    font-size: 2.1rem;
  }

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

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

  nav {
    width: 100%;
    justify-content: flex-start;
  }

  nav a {
    padding-inline: 0.82rem;
  }

  h1 {
    font-size: clamp(2.8rem, 14vw, 4.2rem);
  }
}