:root{
  --bg0:#070a10;
  --bg1:#0b1020;
  --panel: rgba(255,255,255,0.06);
  --panel2: rgba(255,255,255,0.08);
  --border: rgba(255,255,255,0.12);
  --text:#f2f6ff;
  --muted: rgba(242,246,255,0.72);
  --muted2: rgba(242,246,255,0.58);
  --accent: #7aa7ff;
  --accent2: #8de3ff;
  --danger:#ff6b6b;
  --shadow: 0 18px 60px rgba(0,0,0,0.55);
  --radius: 18px;
  --max: 1040px;
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  min-height:100vh;
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
  background:
    radial-gradient(900px 520px at 20% 15%, rgba(122,167,255,0.16), transparent 55%),
    radial-gradient(800px 520px at 80% 18%, rgba(141,227,255,0.12), transparent 55%),
    radial-gradient(900px 620px at 55% 85%, rgba(122,167,255,0.08), transparent 60%),
    linear-gradient(180deg, var(--bg0), var(--bg1));
}

a{ color: inherit; text-underline-offset: 3px; }
.container{
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
}

.skip-link{
  position:absolute; left:-9999px; top:auto; width:1px; height:1px; overflow:hidden;
}
.skip-link:focus{
  left: 16px; top: 16px; width:auto; height:auto;
  background: rgba(0,0,0,0.5);
  padding: 10px 12px;
  border-radius: 12px;
  outline: 1px solid var(--border);
  z-index: 9999;
}

.site-header{
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background: rgba(7,10,16,0.55);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 14px;
  padding: 14px 0;
}

.brand{
  display:flex;
  align-items:center;
  gap: 10px;
  text-decoration:none;
}
.brand-mark{
  width: 42px;
  height: 42px;
  display:grid;
  place-items:center;
  border-radius: 14px;
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.10);
  box-shadow: 0 10px 30px rgba(0,0,0,0.35);
}
.brand-text{
  display:flex;
  flex-direction:column;
  line-height: 1.1;
}
.brand-title{
  font-weight: 800;
  letter-spacing: -0.3px;
  font-size: 14px;
}
.brand-sub{
  color: var(--muted2);
  font-size: 12px;
  margin-top: 3px;
}

.header-actions{
  display:flex;
  gap: 10px;
  align-items:center;
}

.btn{
  appearance:none;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.06);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 999px;
  cursor:pointer;
  font-size: 13px;
  text-decoration:none;
  display:inline-flex;
  align-items:center;
  gap: 8px;
  transition: transform 140ms ease, background 140ms ease, opacity 140ms ease;
}
.btn:hover{ transform: translateY(-1px); background: rgba(255,255,255,0.09); }
.btn:active{ transform: translateY(0px); opacity: 0.95; }

.btn-ghost{
  background: transparent;
}
.btn-ghost:hover{
  background: rgba(255,255,255,0.08);
}

.btn-primary{
  background: linear-gradient(180deg, rgba(122,167,255,0.95), rgba(122,167,255,0.80));
  border-color: rgba(122,167,255,0.45);
  color: #07101e;
  font-weight: 800;
}
.btn-primary:hover{ background: linear-gradient(180deg, rgba(141,227,255,0.95), rgba(122,167,255,0.85)); }

.btn-support{
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.16);
}
.btn-support-small{
  padding: 9px 12px;
  font-size: 12.5px;
}

.hero{
  display:grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 18px;
  padding: 26px 0 12px;
}
@media (max-width: 860px){
  .hero{ grid-template-columns: 1fr; }
}

.hero h1{
  margin:0;
  font-size: 44px;
  line-height: 1.06;
  letter-spacing: -1px;
}
@media (max-width: 520px){
  .hero h1{ font-size: 34px; }
}
.hero-lead{
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 15px;
  max-width: 60ch;
}

.badges{
  display:flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 14px;
}
.badge{
  border: 1px solid rgba(255,255,255,0.10);
  background: rgba(255,255,255,0.06);
  padding: 8px 10px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 12.5px;
}

.hero-note{
  margin-top: 14px;
  color: var(--muted2);
  font-size: 13px;
  border-left: 3px solid rgba(255,255,255,0.12);
  padding-left: 12px;
  max-width: 75ch;
}

.mini-card{
  border-radius: var(--radius);
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.10);
  box-shadow: var(--shadow);
  padding: 16px;
}
.mini-title{
  margin:0 0 10px;
  font-size: 14px;
  letter-spacing: -0.2px;
}
.mini-list{
  margin:0;
  padding-left: 18px;
  color: var(--muted);
  font-size: 13px;
}
.mini-list li{ margin: 8px 0; }

.panel{
  border-radius: var(--radius);
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.10);
  box-shadow: var(--shadow);
  padding: 18px;
  margin: 14px 0;
}

.panel-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.panel h2{
  margin:0;
  font-size: 18px;
  letter-spacing: -0.3px;
}
.panel-sub{
  margin:0;
  color: var(--muted);
  font-size: 13px;
}

.form{ margin-top: 12px; }

.q{
  padding: 14px 12px;
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: 14px;
  background: rgba(0,0,0,0.16);
  margin: 12px 0;
}
.q-title{
  margin: 0 0 10px;
  font-weight: 700;
  color: var(--text);
}
.scale{
  display:grid;
  grid-template-columns: repeat(4, minmax(0,1fr));
  gap: 8px;
}
@media (max-width: 640px){
  .scale{ grid-template-columns: repeat(2, minmax(0,1fr)); }
}

.option{
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: 12px;
  padding: 10px 10px;
  display:flex;
  gap: 10px;
  align-items:center;
  cursor:pointer;
  user-select:none;
  background: rgba(255,255,255,0.04);
  transition: background 140ms ease, transform 140ms ease;
}
.option input{ margin:0; accent-color: var(--accent); }
.option span{ font-size: 13px; color: var(--text); }
.option:hover{ background: rgba(255,255,255,0.08); transform: translateY(-1px); }

.form-actions{
  display:flex;
  gap: 10px;
  margin-top: 14px;
  flex-wrap: wrap;
}

.error{
  margin: 12px 2px 0;
  color: var(--danger);
  font-size: 13px;
  min-height: 20px;
}

.result-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 12px;
}
.pill{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding: 8px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.06);
  color: var(--muted);
  font-size: 12.5px;
}

.score-row{
  display:flex;
  gap: 14px;
  align-items:stretch;
  margin-top: 12px;
}
@media (max-width: 720px){
  .score-row{ flex-direction: column; }
}
.score-box{
  min-width: 150px;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 14px;
  padding: 14px;
  display:grid;
  place-items:center;
  background: rgba(0,0,0,0.18);
}
.score-value{
  font-size: 36px;
  font-weight: 900;
  letter-spacing: -0.8px;
}
.score-label{
  font-size: 12px;
  color: var(--muted);
}

.meter{
  flex: 1;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 14px;
  padding: 14px;
  background: rgba(0,0,0,0.18);
}
.meter-track{
  height: 12px;
  border-radius: 999px;
  background: rgba(255,255,255,0.08);
  overflow:hidden;
  border: 1px solid rgba(255,255,255,0.10);
}
.meter-fill{
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, rgba(122,167,255,0.95), rgba(141,227,255,0.95));
  transition: width 220ms ease;
}
.meter-legend{
  display:flex;
  justify-content:space-between;
  color: var(--muted2);
  font-size: 12px;
  margin-top: 10px;
}

.result-text{
  margin: 14px 0 0;
  color: var(--text);
}
.tips-title{
  margin: 16px 0 10px;
  font-size: 15px;
}
.tips{
  margin: 0;
  padding-left: 18px;
}
.tips li{
  margin: 8px 0;
  color: var(--text);
}
.result-footnote{
  margin-top: 14px;
  color: var(--muted2);
  font-size: 12.5px;
}

.accordion{
  margin-top: 12px;
  display:grid;
  gap: 10px;
}
.acc-btn{
  width: 100%;
  text-align: left;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(0,0,0,0.18);
  color: var(--text);
  padding: 12px 12px;
  cursor:pointer;
  font-weight: 800;
  letter-spacing: -0.2px;
}
.acc-btn:hover{
  background: rgba(255,255,255,0.06);
}
.acc-body{
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: 14px;
  background: rgba(255,255,255,0.04);
  padding: 12px 12px;
  color: var(--muted);
}
.acc-body p{ margin: 0; }
.acc-body ul{
  margin: 10px 0 0;
  padding-left: 18px;
}
.acc-body li{ margin: 8px 0; }

.copyright{
  margin-top: 14px;
  color: var(--muted2);
  font-size: 12.5px;
}

.site-footer{
  margin-top: 22px;
  padding: 18px 0 34px;
  border-top: 1px solid rgba(255,255,255,0.08);
  background: rgba(7,10,16,0.35);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.footer-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.footer-links{
  display:flex;
  gap: 14px;
  flex-wrap: wrap;
}
.footer-links a{
  color: var(--muted);
  text-decoration:none;
  font-size: 13px;
}
.footer-links a:hover{ text-decoration: underline; }