:root {
  --bg: #061214;
  --bg-2: #0a1d20;
  --card: rgba(9, 33, 37, 0.78);
  --card-strong: rgba(13, 47, 52, 0.95);
  --text: #eef8f6;
  --muted: #a8c5c0;
  --muted-2: #789895;
  --line: rgba(128, 255, 225, 0.17);
  --line-strong: rgba(128, 255, 225, 0.34);
  --accent: #39f6d2;
  --accent-2: #b7ff6a;
  --gold: #d8aa52;
  --danger: #ff6b6b;
  --warning: #ffd166;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.36);
  --radius: 24px;
  --radius-sm: 16px;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 10% 0%, rgba(57, 246, 210, 0.12), transparent 35%),
    radial-gradient(circle at 90% 12%, rgba(216, 170, 82, 0.12), transparent 28%),
    linear-gradient(145deg, var(--bg), #020606 74%);
  min-height: 100vh;
}

a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
input, select, textarea {
  width: 100%;
  border: 1px solid var(--line-strong);
  background: rgba(2, 12, 14, 0.76);
  color: var(--text);
  border-radius: 14px;
  padding: 12px 13px;
  outline: none;
}
input:focus, select:focus, textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(57, 246, 210, 0.12);
}
textarea { resize: vertical; }
label { display: grid; gap: 7px; color: var(--muted); font-size: 0.93rem; }

.container {
  width: min(100% - 32px, var(--max));
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -80px;
  padding: 10px 14px;
  background: var(--accent);
  color: #042021;
  border-radius: 999px;
  z-index: 20;
}
.skip-link:focus { top: 16px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(2, 10, 11, 0.72);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--line);
}
.header-grid {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: max-content;
}
.brand-mark {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: linear-gradient(145deg, rgba(57, 246, 210, 0.16), rgba(216, 170, 82, 0.18));
  border: 1px solid var(--line-strong);
  box-shadow: 0 0 22px rgba(57, 246, 210, 0.1);
}
.brand-text { display: grid; line-height: 1.05; }
.brand-text strong { letter-spacing: 0.02em; }
.brand-text small { color: var(--gold); letter-spacing: 0.16em; font-weight: 700; font-size: 0.72rem; }
.top-nav { display: flex; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
.top-nav a {
  color: var(--muted);
  padding: 9px 12px;
  border-radius: 999px;
  border: 1px solid transparent;
}
.top-nav a:hover,
.top-nav a:focus-visible {
  color: var(--text);
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.04);
}

.hero { padding: 92px 0 52px; position: relative; overflow: hidden; }
.section-glow::before,
.section-glow-soft::before {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.45;
}
.section-glow-soft { position: relative; }
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(310px, 0.8fr);
  gap: 34px;
  align-items: center;
}
.eyebrow {
  color: var(--accent-2);
  text-transform: uppercase;
  font-weight: 800;
  letter-spacing: 0.14em;
  font-size: 0.76rem;
  margin: 0 0 12px;
}
h1, h2, h3 { margin: 0; line-height: 1.05; }
h1 { font-size: clamp(2.35rem, 6vw, 5.25rem); letter-spacing: -0.055em; }
h2 { font-size: clamp(1.65rem, 3.6vw, 3rem); letter-spacing: -0.035em; }
h3 { font-size: 1.2rem; }
p { color: var(--muted); line-height: 1.7; }
.lead { font-size: clamp(1.05rem, 2vw, 1.25rem); max-width: 780px; }
.micro-note { font-size: 0.9rem; color: var(--muted-2); margin-top: 18px; }
.hero-actions, .inline-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 24px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
  box-shadow: none;
  transition: transform 0.16s ease, border-color 0.16s ease, background 0.16s ease;
}
.btn:hover,
.btn:focus-visible { transform: translateY(-1px); border-color: var(--accent); }
.btn-primary { color: #03201d; background: linear-gradient(135deg, var(--accent), var(--accent-2)); border: 0; font-weight: 900; }
.btn-secondary { color: #041c1b; background: var(--gold); border: 0; font-weight: 900; }
.btn-ghost { background: rgba(255,255,255,0.03); }
.btn-mini { min-height: 36px; padding: 0 13px; font-size: 0.9rem; }
.hero-panel,
.tool-card,
.info-card,
.report-card,
.wizard-shell {
  position: relative;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(14, 45, 50, 0.84), rgba(4, 18, 20, 0.84));
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.hero-panel { padding: 28px; }
.panel-light {
  position: absolute;
  width: 210px;
  height: 210px;
  right: -70px;
  top: -70px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(57, 246, 210, 0.22), transparent 68%);
  pointer-events: none;
}
.check-list { padding: 0; margin: 18px 0 0; list-style: none; display: grid; gap: 10px; }
.check-list li { color: var(--muted); display: flex; gap: 10px; }
.check-list li::before { content: "✓"; color: var(--accent-2); font-weight: 900; }

.diagnostic-section,
.tools-section,
.settings-section,
.report-section,
.info-section,
.faq-section { padding: 76px 0; }
.section-heading { max-width: 840px; margin-bottom: 28px; }
.section-heading.compact { max-width: 760px; }
.section-heading p { margin-bottom: 0; }

.wizard-shell { padding: 22px; }
.wizard-progress {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-bottom: 20px;
}
.progress-step {
  border: 1px solid var(--line);
  color: var(--muted-2);
  border-radius: 999px;
  padding: 10px 12px;
  text-align: center;
  font-size: 0.9rem;
}
.progress-step.is-active {
  color: #031a18;
  border-color: transparent;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  font-weight: 900;
}
.wizard {
  border: 1px solid rgba(255,255,255,0.06);
  background: rgba(0, 0, 0, 0.16);
  border-radius: 20px;
  padding: 22px;
}
.wizard-title-row { display: flex; justify-content: space-between; gap: 18px; flex-wrap: wrap; align-items: flex-start; }
.wizard-title-row p { margin: 8px 0 0; }
.grid-cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; margin-top: 18px; }
.option-card,
.problem-card,
.answer-card,
.test-card {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.035);
  color: var(--text);
  border-radius: 18px;
  padding: 16px;
  text-align: left;
  transition: transform 0.16s ease, border-color 0.16s ease, background 0.16s ease;
}
.option-card:hover,
.problem-card:hover,
.answer-card:hover,
.test-card:hover,
.option-card.is-selected,
.problem-card.is-selected,
.answer-card.is-selected {
  transform: translateY(-1px);
  border-color: var(--accent);
  background: rgba(57, 246, 210, 0.09);
}
.option-card strong,
.problem-card strong,
.answer-card strong,
.test-card strong { display: block; margin-bottom: 6px; }
.option-card span,
.problem-card span,
.answer-card span,
.test-card span { color: var(--muted); line-height: 1.55; }
.form-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; margin: 18px 0; }
.form-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.wizard-actions { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-top: 22px; }
.notice {
  border: 1px solid var(--line-strong);
  border-radius: 18px;
  padding: 14px 16px;
  background: rgba(57, 246, 210, 0.08);
  color: var(--muted);
  margin-top: 16px;
}
.notice.warning { border-color: rgba(255, 209, 102, 0.44); background: rgba(255, 209, 102, 0.08); }
.notice.danger { border-color: rgba(255, 107, 107, 0.46); background: rgba(255, 107, 107, 0.08); }

.question-box {
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 20px;
  background: rgba(255,255,255,0.03);
  margin-top: 18px;
}
.question-counter { color: var(--gold); font-weight: 900; margin-bottom: 8px; }
.answer-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin-top: 18px; }
.help-text { color: var(--muted-2); font-size: 0.94rem; margin-top: 10px; }

.result-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(280px, 0.55fr); gap: 18px; margin-top: 18px; }
.rank-list, .action-list, .meta-list { display: grid; gap: 12px; margin: 16px 0 0; padding: 0; list-style: none; }
.rank-item {
  display: grid;
  gap: 10px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.035);
  border-radius: 16px;
  padding: 14px;
}
.rank-head { display: flex; justify-content: space-between; gap: 12px; align-items: center; }
.rank-title { font-weight: 900; }
.rank-percent { color: var(--accent-2); font-weight: 900; }
.bar { height: 9px; border-radius: 999px; overflow: hidden; background: rgba(255,255,255,0.08); }
.bar span { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--accent), var(--accent-2)); }
.rank-desc { margin: 0; color: var(--muted); }
.action-list li,
.meta-list li {
  border-left: 3px solid var(--gold);
  padding: 8px 0 8px 12px;
  color: var(--muted);
}
.report-box {
  width: 100%;
  min-height: 260px;
  margin-top: 12px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.88rem;
}

.test-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.test-card { min-height: 132px; }
.tool-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.tool-card { padding: 22px; }
.calc-output {
  display: block;
  margin-top: 14px;
  color: var(--accent-2);
  font-weight: 900;
  min-height: 24px;
}

.filter-bar {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.03);
  border-radius: 20px;
  padding: 16px;
  margin-bottom: 18px;
}
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 20px; }
.settings-table { width: 100%; border-collapse: collapse; min-width: 760px; background: rgba(0,0,0,0.18); }
.settings-table th,
.settings-table td { padding: 14px; border-bottom: 1px solid rgba(128,255,225,0.12); vertical-align: top; text-align: left; }
.settings-table th { color: var(--accent-2); font-size: 0.86rem; text-transform: uppercase; letter-spacing: 0.08em; }
.settings-table td { color: var(--muted); }
.settings-table tr:hover td { background: rgba(57,246,210,0.035); }

.report-grid { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(360px, 1.1fr); gap: 18px; }
.report-card { padding: 22px; }
.problem-form { display: grid; gap: 15px; margin-top: 18px; }
.checkbox-line { display: flex; align-items: center; gap: 10px; }
.checkbox-line input { width: auto; }
.report-output-card textarea { min-height: 430px; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.88rem; }

.info-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 18px; }
.info-card { padding: 24px; }
.info-card.danger { border-color: rgba(255, 107, 107, 0.35); }
.info-card.danger h2 { color: var(--danger); }
.faq-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
details {
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.03);
  border-radius: 18px;
  padding: 16px;
}
summary { cursor: pointer; font-weight: 900; }
details p { margin-bottom: 0; }

.site-footer {
  border-top: 1px solid var(--line);
  background: rgba(0,0,0,0.24);
  padding: 26px 0;
}
.footer-grid { display: flex; justify-content: space-between; gap: 18px; flex-wrap: wrap; }
.footer-grid p { margin: 0; }

@media (max-width: 920px) {
  .hero-grid,
  .result-grid,
  .report-grid,
  .info-grid { grid-template-columns: 1fr; }
  .grid-cards,
  .test-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .form-grid,
  .filter-bar { grid-template-columns: 1fr; }
  .tool-grid,
  .faq-grid { grid-template-columns: 1fr; }
}

@media (max-width: 680px) {
  .container { width: min(100% - 22px, var(--max)); }
  .header-grid { align-items: flex-start; flex-direction: column; padding: 14px 0; }
  .top-nav { justify-content: flex-start; }
  .hero { padding-top: 54px; }
  .wizard-progress { grid-template-columns: 1fr 1fr; }
  .grid-cards,
  .test-grid,
  .answer-grid { grid-template-columns: 1fr; }
  .wizard { padding: 14px; }
  .wizard-shell { padding: 12px; }
}