:root{
  --bg:#12151A;
  --surface:#191D22;
  --surface-2:#20252B;
  --surface-3:#262C33;
  --border:#2A3038;
  --border-soft:#22272E;
  --text:#E7E9EA;
  --text-dim:#8D95A0;
  --text-faint:#5D636D;
  --amber:#C9A24A;
  --sage:#6E9B7C;
  --rust:#A8583F;
  --slate:#5C7A99;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{margin:0;background:var(--bg);color:var(--text);font-family:'Inter',sans-serif;-webkit-font-smoothing:antialiased;line-height:1.5;}
h1,h2,h3{font-family:'Space Grotesk',sans-serif;margin:0;letter-spacing:-0.01em;}
p{margin:0;}
.mono{font-family:'IBM Plex Mono',monospace;}
a{color:inherit;}
.wrap{max-width:1040px;margin:0 auto;padding:0 24px;}
.hidden{display:none !important;}

/* ---------- NAV ---------- */
nav{position:sticky;top:0;z-index:10;background:rgba(18,21,26,0.85);backdrop-filter:blur(10px);border-bottom:1px solid var(--border-soft);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;padding:16px 24px;max-width:1040px;margin:0 auto;}
.logo{display:flex;align-items:center;gap:9px;}
.logo-mark{width:20px;height:20px;border-radius:5px;background:linear-gradient(135deg,var(--sage),var(--slate));flex-shrink:0;}
.logo-text{font-family:'Space Grotesk',sans-serif;font-weight:600;font-size:14.5px;}
.nav-links{display:flex;align-items:center;gap:26px;}
.nav-links a{font-size:12.5px;color:var(--text-dim);text-decoration:none;}
.nav-links a:hover{color:var(--text);}
.btn{font-family:'Inter',sans-serif;font-weight:600;font-size:12.5px;border:none;border-radius:7px;padding:9px 16px;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;gap:6px;}
.btn-primary{background:var(--text);color:var(--bg);}
.btn-primary:hover{opacity:.88;}
.btn-ghost{background:transparent;border:1px solid var(--border);color:var(--text-dim);}
.btn-ghost:hover{color:var(--text);border-color:var(--text-dim);}
.btn-lg{padding:12px 22px;font-size:13.5px;}
.btn:disabled{opacity:.5;cursor:default;}

/* ---------- HERO ---------- */
.hero{padding:64px 0 64px;}
.hero-grid{display:grid;grid-template-columns:1.05fr 0.95fr;gap:56px;align-items:start;}
.eyebrow{font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--amber);text-transform:uppercase;letter-spacing:.09em;margin-bottom:16px;display:flex;align-items:center;gap:8px;}
.eyebrow::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--amber);}
h1{font-size:40px;font-weight:600;line-height:1.12;margin-bottom:18px;}
h1 .accent{color:var(--sage);}
.hero-sub{font-size:15px;color:var(--text-dim);max-width:460px;margin-bottom:18px;line-height:1.6;}
.hero-note{font-size:11.5px;color:var(--text-faint);margin-bottom:26px;}

/* ---------- APP PANEL ---------- */
.app-panel{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:20px;max-width:520px;}
.field-label{font-size:10px;color:var(--text-faint);text-transform:uppercase;letter-spacing:.07em;margin-bottom:10px;display:block;}
.field-row{display:flex;gap:10px;}
.field-input{flex:1;min-width:0;background:var(--surface-2);border:1px solid var(--border);border-radius:8px;padding:12px 14px;font-size:13px;color:var(--text);outline:none;}
.field-input::placeholder{color:var(--text-faint);}
.field-input:focus{border-color:var(--text-dim);}

/* suggestions */
.suggestions{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;align-items:center;}
.suggestions-label{font-size:9.5px;color:var(--text-faint);text-transform:uppercase;letter-spacing:.06em;margin-right:2px;}
.suggestion-chip{background:var(--surface-2);border:1px solid var(--border-soft);color:var(--text-dim);font-size:11.5px;border-radius:999px;padding:6px 12px;cursor:pointer;font-family:'Inter',sans-serif;}
.suggestion-chip:hover{color:var(--text);border-color:var(--text-dim);}

/* running / trail */
.running-head{margin-bottom:14px;}
.running-idea{font-size:13px;color:var(--text);font-weight:600;margin-bottom:12px;word-break:break-word;}
.trail{list-style:none;margin:0 0 12px;padding:0;}
.trail-item{display:flex;align-items:center;gap:12px;padding:11px 0;border-bottom:1px solid var(--border-soft);}
.trail-item:last-child{border-bottom:none;}
.trail-dot{width:8px;height:8px;border-radius:50%;background:var(--slate);flex-shrink:0;transition:background .3s;}
.trail-label{font-size:12.5px;color:var(--text-dim);flex:1;font-weight:500;}
.trail-status{font-family:'IBM Plex Mono',monospace;font-size:10px;color:var(--text-faint);}
.trail-item.done .trail-dot{background:var(--sage);}
.trail-item.done .trail-status{color:var(--sage);}
.trail-item.active .trail-dot{background:var(--amber);animation:pulse 1.2s infinite;}
@keyframes pulse{0%{opacity:.35}50%{opacity:1}100%{opacity:.35}}
.running-note{font-size:9.5px;color:var(--text-faint);letter-spacing:.05em;margin-bottom:16px;}

/* email capture */
.email-capture{margin-top:4px;padding-top:14px;border-top:1px solid var(--border-soft);}
.email-label{display:block;font-size:11.5px;color:var(--text-dim);margin-bottom:10px;}
.email-form{display:flex;gap:10px;}
.email-input{flex:1;}
.email-form .btn{flex-shrink:0;}

/* results */
.results-head{margin-bottom:14px;}
.signal-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
.signal-card{background:var(--surface-2);border:1px solid var(--border-soft);border-radius:10px;padding:16px;}
.signal-label{font-family:'IBM Plex Mono',monospace;font-size:9.5px;color:var(--text-faint);text-transform:uppercase;letter-spacing:.06em;margin-bottom:8px;display:flex;justify-content:space-between;align-items:center;}
.signal-state{font-size:8.5px;padding:2px 6px;border-radius:99px;border:1px solid var(--border);color:var(--text-faint);}
.signal-state.ok{color:var(--sage);border-color:var(--sage);}
.signal-state.mixed{color:var(--amber);border-color:var(--amber);}
.signal-state.none{color:var(--rust);border-color:var(--rust);}
.signal-headline{font-size:19px;font-weight:600;color:var(--sage);margin-bottom:6px;font-family:'Space Grotesk',sans-serif;}
.signal-desc{font-size:11.5px;color:var(--text-dim);line-height:1.5;margin-bottom:10px;}
.confidence-bar{height:4px;background:var(--surface-3);border-radius:99px;overflow:hidden;margin-bottom:8px;}
.confidence-fill{height:100%;background:var(--sage);border-radius:99px;}
.signal-evidence{font-family:'IBM Plex Mono',monospace;font-size:9px;color:var(--text-faint);}
.signal-evidence a{color:var(--slate);text-decoration:none;}
.signal-evidence a:hover{text-decoration:underline;}

/* verdict */
.verdict-card{margin-top:16px;display:flex;align-items:center;gap:14px;background:var(--surface-2);border:1px solid var(--border-soft);border-radius:10px;padding:16px;}
.stamp{font-family:'IBM Plex Mono',monospace;font-weight:600;font-size:12px;letter-spacing:.07em;border:2px solid var(--sage);color:var(--sage);padding:8px 12px;border-radius:6px;transform:rotate(-3deg);text-transform:uppercase;flex-shrink:0;}
.stamp.tone-maybe{border-color:var(--amber);color:var(--amber);}
.stamp.tone-nah{border-color:var(--rust);color:var(--rust);}
.verdict-text{min-width:0;}
.verdict-reasoning{font-size:12.5px;color:var(--text-dim);line-height:1.55;}
.verdict-confidence{font-size:10px;color:var(--text-faint);margin-top:6px;}
.results-actions{display:flex;align-items:center;gap:12px;margin-top:16px;}

/* build / limit / offline panels */
.build-panel,.limit-panel{text-align:left;}
.build-title{font-size:18px;font-weight:600;margin-bottom:12px;line-height:1.35;}
.section-desc{font-size:13px;color:var(--text-dim);line-height:1.6;margin-bottom:14px;}
.confirm-note{font-size:12px;color:var(--sage);}
.build-panel .btn,.limit-panel .btn{margin-top:12px;}
.build-panel h3,.limit-panel h3{font-family:'Space Grotesk',sans-serif;}

/* ---------- SECTION shared ---------- */
section{padding:64px 0;border-top:1px solid var(--border-soft);}
.section-head{max-width:520px;margin-bottom:36px;}
.section-eyebrow{font-family:'IBM Plex Mono',monospace;font-size:10.5px;color:var(--text-faint);text-transform:uppercase;letter-spacing:.08em;margin-bottom:10px;}
.section-title{font-size:26px;font-weight:600;margin-bottom:10px;}
.section-desc{font-size:13.5px;color:var(--text-dim);line-height:1.6;}

/* ---------- PROBLEM ---------- */
.problem-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;}
.problem-col .label{font-family:'IBM Plex Mono',monospace;font-size:10.5px;text-transform:uppercase;letter-spacing:.06em;margin-bottom:12px;}
.problem-col.bad .label{color:var(--rust);}
.problem-col.good .label{color:var(--sage);}
.problem-col ul{list-style:none;margin:0;padding:0;}
.problem-col li{font-size:13.5px;color:var(--text-dim);padding:10px 0;border-bottom:1px solid var(--border-soft);display:flex;gap:10px;}
.problem-col li:last-child{border-bottom:none;}
.problem-col li::before{content:'—';color:var(--text-faint);flex-shrink:0;}
.problem-col.good li::before{content:'✓';color:var(--sage);}

/* ---------- HOW IT WORKS ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.step-card{background:var(--surface);border:1px solid var(--border-soft);border-radius:10px;padding:22px;}
.step-num{font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--amber);margin-bottom:14px;}
.step-title{font-size:15px;font-weight:600;margin-bottom:8px;}
.step-desc{font-size:12.5px;color:var(--text-dim);line-height:1.55;}

/* ---------- DEMO CARD ---------- */
.demo-card{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:20px;position:relative;overflow:hidden;position:sticky;top:90px;}
.demo-card::before{content:'LIVE PREVIEW';position:absolute;top:14px;right:16px;font-family:'IBM Plex Mono',monospace;font-size:9px;color:var(--text-faint);letter-spacing:.08em;}
.demo-idea{font-size:12px;color:var(--text-dim);background:var(--surface-2);border:1px solid var(--border-soft);border-radius:7px;padding:10px 12px;margin-bottom:16px;}
.demo-idea span{color:var(--text);}
.demo-trail{display:flex;flex-direction:column;}
.demo-item{display:flex;align-items:center;gap:10px;padding:9px 0;border-bottom:1px solid var(--border-soft);}
.demo-item:last-child{border-bottom:none;}
.demo-dot{width:7px;height:7px;border-radius:50%;background:var(--sage);flex-shrink:0;}
.demo-item.pending .demo-dot{background:var(--slate);animation:pulse 1.2s infinite;}
.demo-text{font-size:11.5px;color:var(--text-dim);flex:1;}
.demo-tag{font-family:'IBM Plex Mono',monospace;font-size:9px;color:var(--text-faint);}
.demo-verdict{margin-top:16px;display:flex;align-items:center;gap:12px;background:var(--surface-2);border:1px solid var(--border-soft);border-radius:8px;padding:12px 14px;}
.demo-verdict-text{font-size:11px;color:var(--text-dim);line-height:1.5;}

/* ---------- ROADMAP ---------- */
.roadmap{display:flex;gap:2px;background:var(--border-soft);border-radius:10px;overflow:hidden;border:1px solid var(--border-soft);}
.rm-stage{flex:1;background:var(--surface);padding:20px 18px;position:relative;}
.rm-stage.active{background:var(--surface-2);}
.rm-stage .rm-status{font-family:'IBM Plex Mono',monospace;font-size:9px;text-transform:uppercase;letter-spacing:.06em;margin-bottom:10px;}
.rm-stage.active .rm-status{color:var(--sage);}
.rm-stage:not(.active) .rm-status{color:var(--text-faint);}
.rm-stage-title{font-size:14px;font-weight:600;margin-bottom:6px;}
.rm-stage:not(.active) .rm-stage-title{color:var(--text-dim);}
.rm-stage-desc{font-size:11px;color:var(--text-faint);line-height:1.5;}

footer{border-top:1px solid var(--border-soft);padding:28px 0;}
.footer-inner{display:flex;justify-content:space-between;align-items:center;font-size:11.5px;color:var(--text-faint);}

@media(max-width:900px){
  .hero-grid{grid-template-columns:1fr;}
  .demo-card{position:static;margin-top:8px;}
}
@media(max-width:760px){
  .problem-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .signal-grid{grid-template-columns:1fr;}
  .roadmap{flex-direction:column;}
  h1{font-size:32px;}
  .nav-links{display:none;}
  .field-row{flex-direction:column;}
  .email-form{flex-direction:column;}
}