:root {
  --bg: #070b14;
  --bg-2: #0a1020;
  --panel: #0e1628;
  --panel-2: #121d33;
  --panel-3: #17243d;
  --text: #f7f9fd;
  --muted: #9cabca;
  --muted-2: #70809f;
  --line: #24334f;
  --line-strong: #34496f;
  --accent: #71b7ff;
  --accent-strong: #96caff;
  --accent-soft: rgba(113,183,255,.11);
  --mint: #6de3b8;
  --good: #6de3b8;
  --warn: #f4c86f;
  --mild: #ffae68;
  --bad: #ff8585;
  --radius: 20px;
  --radius-sm: 13px;
  --shadow: 0 24px 70px rgba(0,0,0,.28);
  --shadow-soft: 0 14px 34px rgba(0,0,0,.18);
}

* { box-sizing: border-box; }
html { color-scheme: dark; scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 15% -10%, rgba(71,126,216,.22), transparent 33rem),
    radial-gradient(circle at 90% 12%, rgba(56,190,158,.09), transparent 26rem),
    linear-gradient(180deg, #09101d 0, var(--bg) 45%, #060911 100%);
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(rgba(255,255,255,.018) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.018) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,.35), transparent 72%);
  z-index: -1;
}

a { color: inherit; }
.container { width: min(1160px, calc(100% - 36px)); margin: 0 auto; }

header {
  border-bottom: 1px solid rgba(255,255,255,.065);
  background: rgba(7,11,20,.80);
  backdrop-filter: blur(18px) saturate(125%);
  position: sticky;
  top: 0;
  z-index: 20;
}
.nav { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; min-width: max-content; }
.brand-mark { width: 34px; height: 34px; display: block; }
.brand-copy { display: grid; line-height: 1.03; }
.brand-name { font-weight: 900; letter-spacing: -.025em; font-size: 1.02rem; }
.brand-tag { color: var(--muted-2); text-transform: uppercase; letter-spacing: .11em; font-size: .57rem; font-weight: 800; margin-top: 4px; }
nav { display: flex; align-items: center; flex-wrap: wrap; gap: 4px; }
nav a { text-decoration: none; color: var(--muted); font-size: .92rem; font-weight: 650; padding: 9px 10px; border-radius: 10px; transition: color .15s ease, background .15s ease; }
nav a:hover, nav a:focus-visible { color: var(--text); background: rgba(255,255,255,.045); }
nav .nav-cta { color: #08111f; background: var(--accent); padding-inline: 13px; }
nav .nav-cta:hover, nav .nav-cta:focus-visible { background: var(--accent-strong); color: #07101d; }

main { padding: 58px 0 82px; }
.hero { padding: 18px 0 38px; }
.eyebrow { color: var(--accent); font-weight: 850; letter-spacing: .11em; text-transform: uppercase; font-size: .75rem; }
h1 { font-size: clamp(2.45rem, 5.6vw, 5.15rem); line-height: .98; margin: 12px 0 18px; letter-spacing: -.055em; text-wrap: balance; }
h2 { font-size: clamp(1.55rem, 3vw, 2.45rem); line-height: 1.08; letter-spacing: -.035em; margin: 0 0 14px; text-wrap: balance; }
h3 { margin: 0 0 8px; letter-spacing: -.018em; }
p { color: var(--muted); line-height: 1.67; }
.lede { max-width: 790px; font-size: clamp(1.03rem, 1.8vw, 1.16rem); }

.hero-split { display: grid; grid-template-columns: minmax(0,1.12fr) minmax(330px,.88fr); gap: 48px; align-items: center; padding: 32px 0 56px; }
.hero-copy h1 { max-width: 850px; }
.hero-copy .lede { max-width: 700px; }
.hero-trust { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 20px; }
.trust-chip { display: inline-flex; align-items: center; gap: 8px; color: #c6d2e7; border: 1px solid var(--line); background: rgba(14,22,40,.68); border-radius: 999px; padding: 8px 11px; font-size: .83rem; font-weight: 650; }
.trust-chip::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--mint); box-shadow: 0 0 0 4px rgba(109,227,184,.08); }
.preview-shell { position: relative; padding: 18px; border: 1px solid var(--line); background: linear-gradient(180deg, rgba(255,255,255,.035), rgba(255,255,255,.012)), rgba(10,16,31,.9); border-radius: 28px; box-shadow: var(--shadow); overflow: hidden; }
.preview-shell::before { content: ""; position: absolute; width: 180px; height: 180px; right: -55px; top: -55px; border-radius: 50%; background: rgba(113,183,255,.13); filter: blur(4px); }
.preview-top { display: flex; justify-content: space-between; gap: 10px; align-items: center; color: var(--muted); font-size: .78rem; margin-bottom: 16px; }
.preview-status { color: var(--mint); font-weight: 800; }
.preview-controller { min-height: 210px; border: 1px solid var(--line); background: #090f1c; border-radius: 18px; display: grid; place-items: center; padding: 20px; position: relative; }
.controller-outline { width: min(300px, 92%); aspect-ratio: 1.6; position: relative; border: 2px solid #354766; border-radius: 34% 34% 44% 44% / 28% 28% 55% 55%; box-shadow: inset 0 0 35px rgba(113,183,255,.04); }
.controller-outline::before, .controller-outline::after { content:""; position:absolute; width:46px; height:46px; border-radius:50%; top:42%; background:#101a2d; border:1px solid #3a4d70; box-shadow: inset 0 0 0 11px #0a1020; }
.controller-outline::before { left:25%; }
.controller-outline::after { right:25%; }
.preview-cross { position:absolute; left:18%; top:28%; width:36px; height:36px; }
.preview-cross::before, .preview-cross::after { content:""; position:absolute; background:#7f92b3; border-radius:3px; }
.preview-cross::before { width:12px; height:36px; left:12px; }
.preview-cross::after { width:36px; height:12px; top:12px; }
.preview-buttons { position:absolute; right:17%; top:22%; width:66px; height:62px; }
.preview-buttons i { position:absolute; width:13px; height:13px; border-radius:50%; background:var(--accent); opacity:.92; }
.preview-buttons i:nth-child(1){left:26px;top:0}.preview-buttons i:nth-child(2){right:0;top:24px}.preview-buttons i:nth-child(3){left:26px;bottom:0}.preview-buttons i:nth-child(4){left:0;top:24px;background:var(--mint)}
.preview-metrics { display: grid; grid-template-columns: repeat(3,1fr); gap: 9px; margin-top: 10px; }
.preview-metric { border: 1px solid var(--line); background: rgba(18,29,51,.75); border-radius: 13px; padding: 11px; }
.preview-metric small { color: var(--muted-2); display:block; font-size:.68rem; margin-bottom:4px; text-transform:uppercase; letter-spacing:.06em; }
.preview-metric strong { font-size: .94rem; }

.section-head { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 20px; }
.section-head p { max-width: 650px; margin: 0; }
.section { padding: 34px 0; }
.grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 16px; }
.card, .tool-panel, .result-panel, .report-panel {
  background: linear-gradient(180deg, rgba(255,255,255,.028), rgba(255,255,255,.008)), var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
}
.card { text-decoration: none; padding: 22px; position: relative; overflow: hidden; transition: transform .16s ease, border-color .16s ease, background .16s ease; }
.card:hover { transform: translateY(-3px); border-color: #3b527d; background: linear-gradient(180deg, rgba(113,183,255,.055), rgba(255,255,255,.008)), var(--panel); }
.card p { margin-bottom: 0; }
.card-kicker { display:block; color:var(--muted-2); text-transform:uppercase; letter-spacing:.09em; font-size:.67rem; font-weight:800; margin-bottom:14px; }
.card-arrow { position:absolute; right:17px; top:17px; color:var(--muted-2); font-weight:900; transition:transform .15s ease,color .15s ease; }
.card:hover .card-arrow { transform:translate(2px,-2px); color:var(--accent); }
.feature-card { grid-column: span 2; padding: 28px; background: linear-gradient(135deg, rgba(113,183,255,.09), rgba(109,227,184,.035) 55%, rgba(255,255,255,.008)), var(--panel); }
.feature-card h3 { font-size: 1.55rem; }
.feature-card p { max-width: 640px; }
.tool-panel, .result-panel { padding: 24px; }

.steps { display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; counter-reset: step; }
.step-card { border: 1px solid var(--line); background: rgba(14,22,40,.72); border-radius: var(--radius); padding: 22px; }
.step-num { width: 34px; height: 34px; display:grid; place-items:center; border-radius:10px; background:var(--accent-soft); border:1px solid rgba(113,183,255,.25); color:var(--accent); font-weight:900; margin-bottom:18px; }
.method-strip { display:grid; grid-template-columns: 1fr auto; gap:24px; align-items:center; border:1px solid var(--line); background:linear-gradient(90deg, rgba(109,227,184,.055), rgba(113,183,255,.035)), var(--panel); border-radius:var(--radius); padding:26px; }
.method-strip p { margin: 5px 0 0; max-width:780px; }

.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
button, .button {
  appearance: none; border: 1px solid transparent; border-radius: 12px; min-height: 45px; padding: 12px 17px; font-weight: 820; cursor: pointer;
  background: var(--accent); color: #06101e; text-decoration: none; display: inline-flex; align-items: center; justify-content: center; gap:8px;
  transition: transform .12s ease, background .15s ease, border-color .15s ease, box-shadow .15s ease;
}
button:hover:not(:disabled), .button:hover { transform: translateY(-1px); background: var(--accent-strong); box-shadow: 0 9px 24px rgba(49,122,199,.16); }
button.secondary, .button.secondary { background: #17243c; color: var(--text); border-color: var(--line); box-shadow:none; }
button.secondary:hover:not(:disabled), .button.secondary:hover { background:#1c2b47; border-color:var(--line-strong); }
button:disabled { opacity: .48; cursor: not-allowed; transform:none; }
button:focus-visible, .button:focus-visible, a:focus-visible, select:focus-visible, input:focus-visible { outline: 3px solid rgba(113,183,255,.38); outline-offset: 3px; }

.status { display: inline-flex; gap: 10px; align-items: center; margin: 14px 0 0; color: var(--muted); padding: 8px 11px; border:1px solid var(--line); border-radius:999px; background:rgba(14,22,40,.66); }
.dot { width: 9px; height: 9px; border-radius: 999px; background: var(--warn); box-shadow: 0 0 0 5px rgba(244,200,111,.07); }
.dot.good { background: var(--good); box-shadow: 0 0 0 5px rgba(109,227,184,.08); }
.dot.bad { background: var(--bad); box-shadow: 0 0 0 5px rgba(255,133,133,.08); }
.metrics { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 11px; margin-top: 18px; }
.metric { background: var(--panel-2); border: 1px solid var(--line); border-radius: 14px; padding: 14px; }
.metric small { display: block; color: var(--muted-2); margin-bottom: 6px; font-size:.73rem; text-transform:uppercase; letter-spacing:.055em; font-weight:750; }
.metric strong { font-size: 1.22rem; }
.two-col { display: grid; grid-template-columns: 1.15fr .85fr; gap: 18px; align-items: start; }
.canvas-wrap { display: grid; place-items: center; min-height: 330px; background: #080e19; border-radius: 16px; border: 1px solid var(--line); overflow: hidden; }
canvas { width: 100%; max-width: 520px; aspect-ratio: 1; display: block; }
input[type="range"] { width: 100%; accent-color:var(--accent); }
select { background:var(--panel-2)!important; color:var(--text)!important; border:1px solid var(--line)!important; border-radius:10px!important; padding:10px 12px!important; }
.notice { border: 1px solid rgba(113,183,255,.16); border-left: 3px solid var(--accent); padding: 12px 14px; background: rgba(113,183,255,.065); border-radius: 10px; color: var(--muted); }
.results-list { display: grid; gap: 0; margin-top: 16px; }
.result-row { display: flex; justify-content: space-between; gap: 12px; padding: 13px 0; border-bottom: 1px solid var(--line); }
.result-row:last-child { border-bottom: 0; }
.good-text { color: var(--good); }
.warn-text { color: var(--warn); }
.mild-text { color: var(--mild); }
.bad-text { color: var(--bad); }
.button-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 9px; margin-top: 16px; }
.button-chip { border: 1px solid var(--line); background: var(--panel-2); padding: 11px 8px; border-radius: 11px; text-align: center; color: var(--muted); font-size:.89rem; transition:.1s ease; }
.button-chip.active { border-color: var(--accent); color: var(--text); background: rgba(113,183,255,.13); box-shadow:0 0 0 2px rgba(113,183,255,.05) inset; }
.button-chip.pass { border-color: rgba(109,227,184,.6); color: var(--good); background:rgba(109,227,184,.055); }

footer { border-top: 1px solid rgba(255,255,255,.065); padding: 30px 0 50px; color: var(--muted-2); background:rgba(4,7,13,.32); }
.footer-row { display: flex; justify-content: space-between; gap: 18px; flex-wrap: wrap; }
.footer-brand { display:flex; align-items:center; gap:9px; color:#aebad0; font-weight:700; }
.footer-brand img { width:24px; height:24px; }
.footer-links { display: flex; gap: 14px; flex-wrap: wrap; }
.footer-links a { color: var(--muted); text-decoration:none; }
.footer-links a:hover { color:var(--text); }
.prose { max-width: 850px; }
.prose h2 { margin-top: 36px; }
.prose p, .prose li { color:var(--muted); line-height:1.75; }
code { background: #121b30; padding: 2px 6px; border-radius: 6px; }

/* Guided health check */
.health-hero { padding-bottom: 18px; }
.health-topline { display:flex; gap:10px; flex-wrap:wrap; align-items:center; }
.health-progress { margin: 0 0 22px; padding: 12px 14px; border:1px solid var(--line); border-radius:14px; background:rgba(14,22,40,.62); }
.progress-track { height: 7px; background: #0a101d; border: 1px solid var(--line); border-radius: 999px; overflow: hidden; }
.progress-fill { width: 0; height: 100%; background: linear-gradient(90deg,var(--accent),var(--mint)); transition: width .25s ease; }
.progress-labels { display: grid; grid-template-columns: repeat(8, 1fr); gap: 6px; margin-top: 9px; }
.progress-labels span { color: var(--muted-2); font-size: .7rem; text-align: center; font-weight:650; }
.progress-labels span.current { color: var(--text); font-weight: 850; }
.progress-labels span.done { color: var(--good); }
.health-layout { grid-template-columns: 1.3fr .7fr; }
.health-stage-panel { min-height: 600px; position:relative; overflow:hidden; }
.health-stage-panel::before { content:""; position:absolute; width:170px; height:170px; border-radius:50%; background:rgba(113,183,255,.055); right:-70px; top:-70px; pointer-events:none; }
.stage-meta { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.stage-pill { display: inline-flex; padding: 6px 10px; border: 1px solid rgba(113,183,255,.28); background: var(--accent-soft); color: var(--accent); border-radius: 999px; font-weight: 850; font-size: .76rem; letter-spacing:.03em; }
.stage-time { color: var(--muted-2); font-size: .87rem; }
.stage-note { color: var(--muted); min-height: 1.5em; }
.health-visual { margin: 24px 0 0; }
.health-visual[hidden] { display: none !important; }
.connect-card { min-height: 310px; display: grid; place-items: center; align-content: center; gap: 11px; border: 1px dashed #3a4f75; background: linear-gradient(180deg,#09101d,#080d17); border-radius: 18px; text-align: center; padding: 32px; }
.connect-card strong { font-size: clamp(1.25rem, 3vw, 2rem); }
.connect-card span { color: var(--muted); }
.controller-glyph { width:86px; height:86px; display:grid; place-items:center; background:var(--accent-soft); border:1px solid rgba(113,183,255,.22); border-radius:24px; font-size: 3.3rem; }
.health-live-metrics { grid-template-columns: repeat(4, minmax(0,1fr)); }
.trigger-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.trigger-card { border: 1px solid var(--line); background: #080e19; border-radius: 16px; padding: 20px; }
.trigger-head { display: flex; justify-content: space-between; gap: 12px; margin-bottom: 15px; }
.trigger-head span { color: var(--muted); }
.trigger-meter { height: 28px; border: 1px solid var(--line); border-radius: 999px; overflow: hidden; background: var(--panel-2); }
.trigger-meter > div { height: 100%; width: 0; background: linear-gradient(90deg,var(--accent),var(--mint)); transition: width .04s linear; }
.trigger-value { font: 800 2rem/1 ui-monospace, SFMono-Regular, Menlo, monospace; margin-top: 16px; }
.guided-button-target { display: grid; gap: 7px; text-align: center; place-items: center; min-height: 185px; border: 1px solid var(--line); border-radius: 16px; background: #080e19; margin-bottom: 16px; }
.guided-button-target small { color: var(--muted-2); text-transform: uppercase; letter-spacing: .09em; }
.guided-button-target strong { font-size: clamp(1.8rem, 5vw, 3.6rem); }
.guided-button-target span { color: var(--muted); }
.button-chip.target { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(113,183,255,.08); color: var(--text); }
.button-chip.skip { border-color: var(--warn); color: var(--warn); opacity: .8; }
.checklist-plain { display: grid; gap: 2px; }
.checklist-plain > div { display: grid; grid-template-columns: 34px 1fr; gap: 12px; border-bottom: 1px solid var(--line); padding: 13px 0; }
.checklist-plain > div:last-child { border-bottom: 0; }
.checklist-plain span { width: 30px; height: 30px; display: grid; place-items: center; border-radius: 9px; background: var(--accent-soft); color: var(--accent); font-weight: 900; }
.checklist-plain p { margin: 0; }
.report-panel { margin-top: 24px; padding: 26px; scroll-margin-top: 90px; }
.report-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.report-header p { margin: 4px 0 8px; }
.report-summary { color: #c7d2e8; font-weight: 850; font-size: .88rem; letter-spacing: .02em; }
.overall-badge { padding: 10px 14px; border-radius: 999px; border: 1px solid var(--line); font-weight: 900; }
.overall-badge.good { border-color: rgba(109,227,184,.5); color: var(--good); background: rgba(109,227,184,.07); }
.overall-badge.warn { border-color: rgba(244,200,111,.5); color: var(--warn); background: rgba(244,200,111,.07); }
.overall-badge.mild { border-color: rgba(255,174,104,.5); color: var(--mild); background: rgba(255,174,104,.07); }
.overall-badge.bad { border-color: rgba(255,133,133,.5); color: var(--bad); background: rgba(255,133,133,.07); }
.report-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 22px; }
.report-item { display: grid; grid-template-columns: 44px 1fr; gap: 14px; border: 1px solid var(--line); border-radius: 15px; padding: 18px; background: var(--panel-2); }
.report-item h3 { margin-bottom: 5px; }
.report-item p { margin: 7px 0; font-size: .93rem; }
.report-item a { color: var(--accent); font-size: .9rem; }
.report-status-icon { width: 38px; height: 38px; display: grid; place-items: center; border-radius: 11px; background: #080e19; font-weight: 900; }
.report-item.good .report-status-icon { color: var(--good); }
.report-item.warn .report-status-icon { color: var(--warn); }
.report-item.mild .report-status-icon { color: var(--mild); }
.report-item.bad .report-status-icon { color: var(--bad); }
.technical-details { margin-top: 10px; border-top: 1px solid rgba(255,255,255,.055); padding-top: 9px; }
.technical-details summary { color: var(--muted-2); cursor: pointer; font-size: .82rem; font-weight: 750; }
.technical-details p { margin-bottom: 0; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .78rem; line-height: 1.55; overflow-wrap: anywhere; }
.report-actions { margin-top: 22px; }

@media (max-width: 940px) {
  .hero-split { grid-template-columns:1fr; gap:24px; }
  .preview-shell { max-width:650px; }
  .grid { grid-template-columns: 1fr 1fr; }
  .feature-card { grid-column:span 2; }
  .steps { grid-template-columns:1fr; }
  .two-col, .health-layout { grid-template-columns: 1fr; }
  .metrics { grid-template-columns: 1fr 1fr; }
  .health-sidebar { order: -1; }
  .report-grid { grid-template-columns: 1fr; }
}
@media (max-width: 700px) {
  .container { width:min(100% - 26px,1160px); }
  .nav { min-height:64px; gap:12px; }
  nav { flex-wrap:nowrap; overflow-x:auto; max-width:58vw; scrollbar-width:none; }
  nav::-webkit-scrollbar { display:none; }
  nav a { white-space:nowrap; }
  .brand-tag { display:none; }
  main { padding-top: 36px; }
  .hero-split { padding-top:14px; }
  .preview-shell { padding:13px; border-radius:22px; }
  .preview-metrics { grid-template-columns:1fr 1fr; }
  .preview-metric:last-child { grid-column:span 2; }
  .method-strip { grid-template-columns:1fr; }
  .progress-labels { display: none; }
  .trigger-pair { grid-template-columns: 1fr; }
  .health-live-metrics { grid-template-columns: 1fr 1fr; }
  .section-head { align-items:start; flex-direction:column; }
}
@media (max-width: 560px) {
  h1 { font-size:clamp(2.35rem,13vw,3.7rem); }
  .grid { grid-template-columns: 1fr; }
  .feature-card { grid-column:auto; }
  .button-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .actions .button, .actions button { width:100%; }
  .metrics { grid-template-columns: 1fr 1fr; }
  .nav { align-items:center; }
  .brand-name { font-size:.95rem; }
  .brand-mark { width:31px; height:31px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior:auto; }
  *, *::before, *::after { animation-duration:.001ms!important; animation-iteration-count:1!important; transition-duration:.001ms!important; }
}

/* V3.1.1 circularity terminology/help */
.measurement-help { margin-top: 16px; }
.measurement-explainer { display: grid; gap: 10px; padding-top: 8px; }
.measurement-explainer p { margin: 0; font-family: inherit; font-size: .9rem; line-height: 1.6; color: var(--muted); }
.measurement-explainer strong { color: var(--text); }