:root,
html[data-theme="dark"] {
  color-scheme: dark;

  --bg: #06070c;
  --bg-deep: #04050a;

  --surface: rgba(255, 255, 255, 0.04);
  --surface-2: rgba(255, 255, 255, 0.06);
  --surface-3: rgba(255, 255, 255, 0.08);

  --border: rgba(255, 255, 255, 0.085);
  --border-accent: rgba(255, 255, 255, 0.16);

  --text: #f5f7fb;
  --text-muted: rgba(255, 255, 255, 0.66);
  --text-dim: rgba(255, 255, 255, 0.42);

  --accent: #5eead4;
  --accent-2: #818cf8;
  --accent-3: #f0abfc;
  --warm: #fbbf24;
  --red: #fca5a5;
  --green: #86efac;

  --font-body: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --max-w: 1240px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-sm: 0 10px 28px rgba(0, 0, 0, 0.22);
  --shadow-md: 0 18px 60px rgba(0, 0, 0, 0.28);
  --shadow-lg: 0 28px 90px rgba(0, 0, 0, 0.36);

  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 18px;

  --page-bg:
    radial-gradient(circle at top left, rgba(94, 234, 212, 0.06), transparent 26%),
    radial-gradient(circle at 85% 18%, rgba(129, 140, 248, 0.07), transparent 22%),
    radial-gradient(circle at 50% 100%, rgba(240, 171, 252, 0.04), transparent 30%),
    linear-gradient(180deg, #07090f 0%, #05070d 54%, #04050a 100%);

  --hero-overlay:
    radial-gradient(circle at 20% 12%, rgba(94, 234, 212, 0.08), transparent 20%),
    radial-gradient(circle at 80% 78%, rgba(129, 140, 248, 0.08), transparent 24%),
    radial-gradient(circle at 65% 20%, rgba(240, 171, 252, 0.05), transparent 18%);

  --grid-color: rgba(255, 255, 255, 0.03);
  --noise-opacity: 0.02;

  --topbar-bg: rgba(7, 9, 15, 0.58);
  --icon-bg: linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.03));
  --icon-highlight: rgba(255, 255, 255, 0.04);

  --btn-primary-bg: linear-gradient(180deg, #ffffff, #e9edf8);
  --btn-primary-hover: linear-gradient(90deg, var(--accent), #b9fff1);
  --btn-primary-text: #050710;

  --btn-secondary-bg: rgba(255, 255, 255, 0.04);
  --btn-secondary-hover: rgba(255, 255, 255, 0.07);

  --card-bg: rgba(255, 255, 255, 0.045);
  --card-bg-soft: rgba(255, 255, 255, 0.035);
  --mini-card-bg: rgba(0, 0, 0, 0.2);
  --promise-bg: linear-gradient(90deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03));
  --form-bg: linear-gradient(180deg, rgba(0, 0, 0, 0.34), rgba(0, 0, 0, 0.24));
  --field-bg: rgba(255, 255, 255, 0.05);
  --field-focus-bg: rgba(255, 255, 255, 0.07);
  --check-item-bg: rgba(0, 0, 0, 0.22);
  --tag-bg: rgba(0, 0, 0, 0.22);
  --select-option-bg: #0e1018;

  --section-muted-bg: rgba(255, 255, 255, 0.02);
  --status-bg: rgba(134, 239, 172, 0.1);
  --status-border: rgba(134, 239, 172, 0.26);
  --status-text: #bff8cf;
}

html[data-theme="light"] {
  color-scheme: light;

  --bg: #f7f9fc;
  --bg-deep: #eef2f8;

  --surface: rgba(255, 255, 255, 0.7);
  --surface-2: rgba(255, 255, 255, 0.82);
  --surface-3: rgba(255, 255, 255, 0.92);

  --border: rgba(15, 23, 42, 0.09);
  --border-accent: rgba(15, 23, 42, 0.16);

  --text: #0f172a;
  --text-muted: rgba(15, 23, 42, 0.72);
  --text-dim: rgba(15, 23, 42, 0.5);

  --accent: #0f766e;
  --accent-2: #4f46e5;
  --accent-3: #a21caf;
  --warm: #d97706;
  --red: #dc2626;
  --green: #15803d;

  --shadow-sm: 0 10px 28px rgba(15, 23, 42, 0.08);
  --shadow-md: 0 18px 60px rgba(15, 23, 42, 0.1);
  --shadow-lg: 0 28px 90px rgba(15, 23, 42, 0.14);

  --page-bg:
    radial-gradient(circle at top left, rgba(20, 184, 166, 0.08), transparent 26%),
    radial-gradient(circle at 85% 18%, rgba(99, 102, 241, 0.08), transparent 22%),
    radial-gradient(circle at 50% 100%, rgba(217, 70, 239, 0.05), transparent 30%),
    linear-gradient(180deg, #fbfdff 0%, #f5f8fc 54%, #eef3f9 100%);

  --hero-overlay:
    radial-gradient(circle at 20% 12%, rgba(20, 184, 166, 0.08), transparent 20%),
    radial-gradient(circle at 80% 78%, rgba(99, 102, 241, 0.08), transparent 24%),
    radial-gradient(circle at 65% 20%, rgba(217, 70, 239, 0.05), transparent 18%);

  --grid-color: rgba(15, 23, 42, 0.05);
  --noise-opacity: 0.012;

  --topbar-bg: rgba(255, 255, 255, 0.72);
  --icon-bg: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(245, 247, 251, 0.9));
  --icon-highlight: rgba(255, 255, 255, 0.75);

  --btn-primary-bg: linear-gradient(180deg, #0f172a, #111827);
  --btn-primary-hover: linear-gradient(90deg, #0f766e, #4f46e5);
  --btn-primary-text: #ffffff;

  --btn-secondary-bg: rgba(255, 255, 255, 0.75);
  --btn-secondary-hover: rgba(255, 255, 255, 0.95);

  --card-bg: rgba(255, 255, 255, 0.72);
  --card-bg-soft: rgba(255, 255, 255, 0.62);
  --mini-card-bg: rgba(255, 255, 255, 0.78);
  --promise-bg: linear-gradient(90deg, rgba(255, 255, 255, 0.9), rgba(248, 250, 252, 0.76));
  --form-bg: linear-gradient(180deg, rgba(255, 255, 255, 0.86), rgba(248, 250, 252, 0.78));
  --field-bg: rgba(255, 255, 255, 0.9);
  --field-focus-bg: rgba(255, 255, 255, 1);
  --check-item-bg: rgba(255, 255, 255, 0.75);
  --tag-bg: rgba(255, 255, 255, 0.78);
  --select-option-bg: #ffffff;

  --section-muted-bg: rgba(255, 255, 255, 0.46);
  --status-bg: rgba(22, 163, 74, 0.1);
  --status-border: rgba(22, 163, 74, 0.2);
  --status-text: #166534;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--page-bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background 0.35s var(--ease), color 0.35s var(--ease);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  opacity: var(--noise-opacity);
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 220px;
}

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

img {
  max-width: 100%;
  display: block;
}

.grid-overlay::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--grid-color) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.45;
  pointer-events: none;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.85), transparent 82%);
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.85), transparent 82%);
}

.container {
  width: min(var(--max-w), calc(100% - 32px));
  margin-inline: auto;
  position: relative;
  z-index: 1;
}

.section {
  padding: 110px 0;
  position: relative;
}

.hero {
  position: relative;
  overflow: hidden;
  min-height: 100vh;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--border);
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--hero-overlay);
  pointer-events: none;
  z-index: 0;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 18px;
  margin-top: 20px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--topbar-bg);
  backdrop-filter: blur(24px) saturate(140%);
  -webkit-backdrop-filter: blur(24px) saturate(140%);
  color: var(--text-muted);
  box-shadow: var(--shadow-sm);
}

.brand,
.topbar-right {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.brand-badge,
.mini-icon,
.feature-icon,
.stack-icon {
  width: 38px;
  height: 38px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  border: 1px solid var(--border);
  background: var(--icon-bg);
  box-shadow: inset 0 1px 0 var(--icon-highlight);
}

.brand-badge,
.mini-icon,
.feature-icon {
  color: var(--accent);
}

.stack-icon {
  color: var(--accent-2);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
  padding: 56px 0 84px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  margin-bottom: 22px;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--accent) 24%, transparent);
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--accent) 14%, transparent),
    color-mix(in srgb, var(--accent) 6%, transparent)
  );
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.01em;
  box-shadow: 0 10px 30px color-mix(in srgb, var(--accent) 8%, transparent);
}

.hero h1 {
  margin: 0;
  font-size: clamp(44px, 8vw, 82px);
  line-height: 0.96;
  letter-spacing: -0.05em;
  font-weight: 900;
  max-width: 860px;
  text-wrap: balance;
}

.gradient-text {
  display: block;
  background: linear-gradient(90deg, var(--accent), var(--accent-2), var(--accent-3));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p.lead {
  max-width: 720px;
  font-size: clamp(18px, 2vw, 22px);
  color: var(--text-muted);
  margin: 24px 0 0;
  line-height: 1.72;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border-radius: 999px;
  padding: 16px 24px;
  font-size: 15px;
  font-weight: 700;
  transition: all 0.35s var(--ease);
  cursor: pointer;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--btn-primary-bg);
  color: var(--btn-primary-text);
  box-shadow:
    0 0 0 1px color-mix(in srgb, var(--text) 6%, transparent),
    0 16px 50px color-mix(in srgb, var(--text) 16%, transparent);
}

.btn-primary:hover {
  background: var(--btn-primary-hover);
  transform: translateY(-2px);
  box-shadow:
    0 0 0 1px color-mix(in srgb, var(--accent) 26%, transparent),
    0 22px 60px color-mix(in srgb, var(--accent) 16%, transparent);
}

.btn-secondary {
  background: var(--btn-secondary-bg);
  border-color: var(--border);
  color: var(--text);
  box-shadow: inset 0 1px 0 color-mix(in srgb, #ffffff 36%, transparent);
}

.btn-secondary:hover {
  background: var(--btn-secondary-hover);
  border-color: var(--border-accent);
  transform: translateY(-2px);
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.pill {
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 600;
}

.radar-wrap {
  position: relative;
}

.glow {
  position: absolute;
  inset: -24px;
  background: linear-gradient(
    135deg,
    color-mix(in srgb, var(--accent) 26%, transparent),
    color-mix(in srgb, var(--accent-2) 18%, transparent),
    color-mix(in srgb, var(--accent-3) 22%, transparent)
  );
  border-radius: 36px;
  filter: blur(28px);
  z-index: 0;
}

.card,
.radar-card,
.cta-card,
.compare-card,
.outcome,
.stack-card,
.mini-card,
.feature-card {
  border: 1px solid var(--border);
  background: var(--card-bg);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: var(--shadow-md);
}

.radar-card {
  position: relative;
  z-index: 1;
  border-radius: 34px;
  padding: 28px;
  overflow: hidden;
}

.radar-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 18px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--border);
}

.radar-head small,
.section-intro small,
.cta-copy small {
  display: block;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 12px;
  color: var(--text-dim);
  font-weight: 700;
}

.radar-head h2,
.section-intro h2,
.cta-copy h2 {
  margin: 10px 0 0;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.05;
  letter-spacing: -0.04em;
  font-weight: 900;
  text-wrap: balance;
}

.section-intro p,
.cta-copy p,
.compare-card p,
.stack-card p,
.feature-card p,
.mini-card p {
  color: var(--text-muted);
}

.status {
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--status-border);
  background: var(--status-bg);
  color: var(--status-text);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.mini-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.mini-card {
  border-radius: 22px;
  padding: 18px;
  background: var(--mini-card-bg);
}

.mini-card h3 {
  margin: 12px 0 6px;
  font-size: 16px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.promise {
  margin-top: 16px;
  padding: 18px;
  border-radius: 22px;
  border: 1px solid var(--border);
  background: var(--promise-bg);
}

.promise .label {
  color: var(--text-dim);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}

.promise strong {
  font-size: 20px;
  line-height: 1.55;
  display: block;
  letter-spacing: -0.02em;
}

.features-grid,
.compare-grid,
.stack-grid {
  display: grid;
  gap: 22px;
}

.features-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.feature-card,
.stack-card,
.compare-card {
  border-radius: 28px;
  padding: 28px;
  background: var(--card-bg-soft);
  transition: all 0.35s var(--ease);
}

.feature-card:hover,
.stack-card:hover,
.compare-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-accent);
  box-shadow: var(--shadow-lg);
}

.feature-card h3,
.stack-card h3,
.compare-card h3 {
  margin: 14px 0 10px;
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.split {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 44px;
  align-items: start;
}

.compare-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 36px;
}

.label-top {
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 8px;
}

.old-way {
  color: var(--red);
}

.new-way {
  color: var(--green);
}

.divider {
  height: 1px;
  background: var(--border);
  margin: 18px 0;
}

.outcome-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.outcome {
  border-radius: 22px;
  padding: 18px 20px;
  font-weight: 700;
  color: var(--text);
  transition: all 0.3s var(--ease);
  cursor: default;
}

.outcome:hover {
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--accent) 28%, transparent);
  background: color-mix(in srgb, var(--accent) 10%, var(--card-bg));
}

.stack-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 36px;
}

.tag-row,
.check-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tag {
  padding: 9px 13px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--tag-bg);
  font-size: 14px;
  color: var(--text-muted);
  font-weight: 600;
}

.cta-card {
  border-radius: 34px;
  padding: 32px;
  background: linear-gradient(
    135deg,
    color-mix(in srgb, var(--accent) 14%, transparent),
    color-mix(in srgb, #ffffff 16%, transparent),
    color-mix(in srgb, var(--accent-3) 14%, transparent)
  );
  box-shadow: var(--shadow-lg);
}

.cta-grid {
  display: grid;
  grid-template-columns: 1fr 0.9fr;
  gap: 36px;
  align-items: start;
}

.check-grid {
  margin-top: 26px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.check-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px;
  border-radius: 22px;
  border: 1px solid var(--border);
  background: var(--check-item-bg);
  color: var(--text);
  font-weight: 600;
}

.check {
  width: 22px;
  height: 22px;
  border-radius: 999px;
  display: inline-grid;
  place-items: center;
  flex-shrink: 0;
  margin-top: 1px;
  color: #08120a;
  background: linear-gradient(90deg, #86efac, #67e8f9);
  font-size: 14px;
  font-weight: 900;
}

.form-panel {
  border-radius: 28px;
  border: 1px solid var(--border);
  background: var(--form-bg);
  padding: 24px;
  box-shadow: inset 0 1px 0 color-mix(in srgb, #ffffff 24%, transparent);
}

.form-panel label {
  display: block;
  margin-bottom: 8px;
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 700;
}

.field {
  width: 100%;
  border-radius: 18px;
  border: 1px solid var(--border);
  background: var(--field-bg);
  padding: 14px 16px;
  color: var(--text);
  font-size: 15px;
  outline: none;
  transition: all 0.3s var(--ease);
  appearance: none;
  font-family: inherit;
}

.field::placeholder {
  color: var(--text-dim);
}

.field:focus {
  border-color: color-mix(in srgb, var(--accent) 38%, transparent);
  background: var(--field-focus-bg);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 12%, transparent);
}

select.field {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='rgba(148,163,184,0.9)' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 42px;
}

select.field option {
  background: var(--select-option-bg);
  color: var(--text);
}

.form-row + .form-row {
  margin-top: 16px;
}

.submit {
  width: 100%;
  margin-top: 18px;
}

.help {
  margin-top: 12px;
  color: var(--text-dim);
  font-size: 13px;
}

.footer {
  padding: 24px 0 42px;
  border-top: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 14px;
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1100px) {
  .hero-grid,
  .split,
  .cta-grid,
  .stack-grid,
  .features-grid {
    grid-template-columns: 1fr;
  }

  .compare-grid,
  .outcome-grid,
  .check-grid,
  .mini-grid {
    grid-template-columns: 1fr 1fr;
  }

  .hero {
    min-height: auto;
  }
}

@media (max-width: 760px) {
  .section {
    padding: 72px 0;
  }

  .topbar {
    flex-direction: column;
    align-items: flex-start;
    border-radius: 24px;
  }

  .hero-grid {
    gap: 34px;
    padding: 30px 0 60px;
  }

  .hero h1 {
    font-size: clamp(40px, 11vw, 62px);
  }

  .radar-card,
  .feature-card,
  .stack-card,
  .compare-card,
  .cta-card,
  .form-panel {
    padding: 22px;
  }

  .compare-grid,
  .outcome-grid,
  .check-grid,
  .mini-grid {
    grid-template-columns: 1fr;
  }

  .actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

  .pill-row,
  .tag-row {
    gap: 8px;
  }
}

@media (max-width: 560px) {
  .container {
    width: min(var(--max-w), calc(100% - 24px));
  }

  .hero p.lead,
  .section-intro p,
  .cta-copy p {
    font-size: 16px !important;
  }

  .promise strong {
    font-size: 18px;
  }

  .footer {
    font-size: 13px;
  }
}