/* marsfever.com — shared design system (v3, multi-page) */
@font-face{
  font-family:'Space Grotesk';
  src:url('/fonts/sg-1.woff2') format('woff2');
  font-weight:300 700; font-style:normal; font-display:swap;
}
:root{
  --bg:#070403; --panel:#0f0806; --ink:#f6efe9; --muted:#b9a99d; --dim:#7d6f66; --faint:#57493f;
  --mars:#ff7847; --mars-hi:#ffb08a; --mars-deep:#d84a26; --rust:#5a140c; --ok:#7fe0a8;
  --line:rgba(255,138,92,.18); --line-soft:rgba(255,255,255,.08);
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --ease:cubic-bezier(.2,.7,.2,1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0; background:var(--bg); color:var(--ink);
  font-family:'Space Grotesk',-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility; overflow-x:hidden;
}
::selection{background:rgba(255,120,71,.35)}
:focus-visible{outline:2px solid var(--mars); outline-offset:2px; border-radius:4px}
a{color:var(--mars); text-decoration:none}
a:hover{text-decoration:underline}

/* atmosphere */
#sky{position:fixed; inset:0; z-index:0; pointer-events:none}
.grain{
  position:fixed; inset:-50%; z-index:40; pointer-events:none; opacity:.05; mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='240' height='240' filter='url(%23n)'/%3E%3C/svg%3E");
}
.vignette{position:fixed; inset:0; z-index:2; pointer-events:none;
  background:radial-gradient(120% 100% at 50% 40%, transparent 55%, rgba(0,0,0,.5) 100%)}

/* header / nav */
header.top{
  position:relative; z-index:5; display:flex; align-items:center; justify-content:space-between; gap:14px;
  padding:16px clamp(18px,4vw,42px); border-bottom:1px solid var(--line-soft);
}
.brand{display:flex; align-items:center; gap:10px; font-weight:700; letter-spacing:.12em; font-size:15px; color:var(--ink)}
.brand:hover{text-decoration:none}
.brand .dot{width:13px; height:13px; border-radius:50%; flex:none;
  background:radial-gradient(circle at 32% 30%, var(--mars-hi), var(--mars) 45%, var(--mars-deep) 80%);
  box-shadow:0 0 14px rgba(255,120,71,.8)}
nav.main{display:flex; align-items:center; gap:clamp(10px,2.5vw,26px)}
nav.main a{font-family:var(--mono); font-size:11px; letter-spacing:.16em; text-transform:uppercase; color:var(--muted)}
nav.main a:hover{color:var(--mars); text-decoration:none}
nav.main a.on{color:var(--mars)}
.chip{
  font-family:var(--mono); font-size:10px; letter-spacing:.18em; text-transform:uppercase;
  color:var(--mars); border:1px solid var(--line); border-radius:999px; padding:7px 14px;
  background:rgba(255,120,71,.06); white-space:nowrap;
}
.chip .blink{display:inline-block; width:6px; height:6px; border-radius:50%; background:var(--mars);
  margin-right:8px; vertical-align:1px; animation:pulse 1.6s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.2}}

/* layout */
main{position:relative; z-index:1}
section, .wrap{position:relative; z-index:1; max-width:1140px; margin:0 auto; padding:clamp(60px,8vw,104px) clamp(18px,5vw,42px)}
.wrap-narrow{max-width:860px}
.crumbs{font-family:var(--mono); font-size:10.5px; letter-spacing:.16em; text-transform:uppercase; color:var(--faint); margin:0 0 26px}
.crumbs a{color:var(--dim)}
.sec-head{display:flex; align-items:baseline; gap:18px; margin-bottom:14px}
.sec-no{font-family:var(--mono); font-size:11px; letter-spacing:.24em; color:var(--faint)}
.sec-eyebrow{font-family:var(--mono); font-size:11px; letter-spacing:.3em; text-transform:uppercase; color:var(--mars); margin:0}
h1.page{font-size:clamp(36px,6.5vw,68px); font-weight:700; letter-spacing:-.03em; line-height:1.02; margin:10px 0 18px}
h1.page .accent{background:linear-gradient(180deg,#fff 10%, #ffd9c8 50%, var(--mars) 88%);
  -webkit-background-clip:text; background-clip:text; color:transparent}
h2{font-size:clamp(26px,4vw,40px); font-weight:700; letter-spacing:-.02em; line-height:1.08; margin:10px 0 14px}
h3{font-size:20px; font-weight:700; letter-spacing:-.01em}
.lede{color:var(--muted); font-size:clamp(16px,2vw,19px); font-weight:300; line-height:1.65; max-width:62ch; margin:0}
.lede b, .prose b{color:var(--ink); font-weight:600}

/* prose (content pages) */
.prose{max-width:70ch; color:var(--muted); font-weight:300; font-size:16.5px; line-height:1.75}
.prose h2{margin-top:52px; color:var(--ink)}
.prose h3{margin-top:36px; color:var(--ink)}
.prose p{margin:0 0 18px}
.prose ul,.prose ol{padding-left:22px; margin:0 0 18px}
.prose li{margin-bottom:8px}
.prose table{width:100%; border-collapse:collapse; margin:22px 0; font-size:15px}
.prose th{font-family:var(--mono); font-size:10.5px; letter-spacing:.14em; text-transform:uppercase; color:var(--dim); text-align:left; padding:10px 12px; border-bottom:1px solid var(--line)}
.prose td{padding:10px 12px; border-bottom:1px solid var(--line-soft); color:var(--muted)}
.prose td:first-child{color:var(--ink)}
.callout{border:1px solid var(--line); border-left:3px solid var(--mars); border-radius:0 12px 12px 0;
  background:rgba(255,120,71,.05); padding:18px 20px; margin:24px 0; font-size:15.5px}

/* cards */
.cards{display:grid; grid-template-columns:repeat(auto-fit,minmax(280px,1fr)); gap:18px; margin-top:44px}
.card{
  --mx:50%; --my:50%;
  position:relative; display:block; border:1px solid var(--line-soft); border-radius:16px; padding:28px 26px 30px;
  color:var(--ink);
  background:
    linear-gradient(var(--mars) 0 0) top 10px left 10px / 14px 1.5px,
    linear-gradient(var(--mars) 0 0) top 10px left 10px / 1.5px 14px,
    linear-gradient(var(--mars) 0 0) top 10px right 10px / 14px 1.5px,
    linear-gradient(var(--mars) 0 0) top 10px right 10px / 1.5px 14px,
    linear-gradient(var(--mars) 0 0) bottom 10px left 10px / 14px 1.5px,
    linear-gradient(var(--mars) 0 0) bottom 10px left 10px / 1.5px 14px,
    linear-gradient(var(--mars) 0 0) bottom 10px right 10px / 14px 1.5px,
    linear-gradient(var(--mars) 0 0) bottom 10px right 10px / 1.5px 14px,
    linear-gradient(180deg, rgba(255,255,255,.035), rgba(255,255,255,.008));
  background-repeat:no-repeat;
  transition:transform .2s var(--ease), border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.card:hover{transform:translateY(-4px); border-color:var(--line); box-shadow:0 16px 48px rgba(216,74,38,.16); text-decoration:none}
.card::after{content:""; position:absolute; inset:0; border-radius:inherit; pointer-events:none; opacity:0;
  background:radial-gradient(220px 220px at var(--mx) var(--my), rgba(255,120,71,.10), transparent 70%);
  transition:opacity .25s var(--ease)}
.card:hover::after{opacity:1}
.card .num{font-family:var(--mono); font-size:10.5px; letter-spacing:.26em; color:var(--dim); text-transform:uppercase}
.card h3{margin:14px 0 10px}
.card h3 .hl{color:var(--mars)}
.card p{margin:0; color:var(--muted); font-size:15px; font-weight:300; line-height:1.7}
.card .go{display:inline-block; margin-top:16px; font-family:var(--mono); font-size:11px; letter-spacing:.18em; text-transform:uppercase; color:var(--mars)}

/* forms & buttons */
.btn{
  display:inline-block; padding:15px 24px; border-radius:13px; border:0; font-size:15px; font-weight:700;
  font-family:inherit; letter-spacing:.01em; cursor:pointer; color:#1e0d06; white-space:nowrap;
  background:linear-gradient(180deg,var(--mars),var(--mars-deep));
  box-shadow:0 4px 26px rgba(255,120,71,.35), inset 0 1px 0 rgba(255,255,255,.35);
  transition:transform .06s var(--ease), filter .15s var(--ease);
}
.btn:hover{filter:brightness(1.08); text-decoration:none}
.btn:active{transform:translateY(1px)}
.btn:disabled{opacity:.55; cursor:default}
.btn.ghost{background:transparent; color:var(--mars); border:1px solid var(--line); box-shadow:none}
.field{display:block; margin:0 0 12px}
.field label{display:block; font-family:var(--mono); font-size:10.5px; letter-spacing:.18em; text-transform:uppercase; color:var(--dim); margin-bottom:7px}
input[type=email],input[type=text],input[type=number],input[type=date],select{
  width:100%; padding:14px 16px; border-radius:12px; font-size:16px; font-family:inherit;
  color:var(--ink); background:rgba(255,255,255,.05); border:1px solid var(--line-soft); outline:none;
  transition:border-color .15s var(--ease), background .15s var(--ease), box-shadow .15s var(--ease);
}
input::placeholder{color:var(--dim)}
input:focus,select:focus{border-color:var(--mars); background:rgba(255,255,255,.08); box-shadow:0 0 0 3px rgba(255,120,71,.14)}
.msg{min-height:24px; margin:14px 2px 0; font-size:14.5px; color:var(--mars)}
.msg.ok{color:var(--ok)}
.micro{margin:10px 0 0; font-family:var(--mono); font-size:10.5px; letter-spacing:.14em; color:var(--dim); text-transform:uppercase}

/* inline email capture */
form.signup{margin:30px 0 0; display:flex; gap:10px; max-width:490px}
form.signup input[type=email]{flex:1; min-width:0}
@media (max-width:500px){ form.signup{flex-direction:column} form.signup .btn{width:100%} }

/* panels / consoles */
.console{
  border:1px solid var(--line); border-radius:20px; overflow:hidden;
  background:linear-gradient(180deg, rgba(255,120,71,.05), rgba(15,8,6,.6));
  box-shadow:0 24px 80px rgba(216,74,38,.14);
}
.console .bar{
  display:flex; align-items:center; gap:10px; padding:13px 20px;
  border-bottom:1px solid var(--line-soft); font-family:var(--mono); font-size:10.5px;
  letter-spacing:.2em; text-transform:uppercase; color:var(--dim);
}
.console .bar i{width:8px; height:8px; border-radius:50%; background:var(--mars);
  box-shadow:0 0 10px rgba(255,120,71,.8); animation:pulse 1.6s infinite}
.console .bar .right{margin-left:auto; color:var(--faint)}
.console .body{padding:clamp(26px,4.5vw,46px)}

/* letter preview (fake envelope/document) */
.letterdoc{
  background:#f4efe8; color:#221410; border-radius:14px; padding:clamp(22px,4vw,38px);
  font-size:15px; line-height:1.7; box-shadow:0 18px 60px rgba(0,0,0,.5);
  border-top:5px solid var(--mars-deep); max-width:620px;
}
.letterdoc .lh{font-family:var(--mono); font-size:10px; letter-spacing:.22em; text-transform:uppercase; color:#8b7d72; margin-bottom:14px}
.letterdoc h4{margin:0 0 12px; font-size:19px; color:#221410}
.letterdoc p{margin:0 0 12px; color:#4a3a32}
.letterdoc .sig{font-family:var(--mono); font-size:12px; color:#8b7d72; margin-top:16px}

/* calculators */
.calc{border:1px solid var(--line); border-radius:18px; padding:clamp(22px,4vw,36px);
  background:linear-gradient(180deg, rgba(255,120,71,.05), rgba(15,8,6,.5)); margin:34px 0}
.calc .row{display:flex; gap:12px; flex-wrap:wrap; align-items:flex-end}
.calc .row .field{flex:1; min-width:180px; margin:0}
.bigout{margin-top:26px; display:none}
.bigout.show{display:block}
.bigout .headline{font-size:clamp(28px,5vw,44px); font-weight:700; letter-spacing:-.02em; line-height:1.15}
.bigout .headline b{color:var(--mars)}
.statgrid{display:grid; grid-template-columns:repeat(auto-fit,minmax(150px,1fr)); gap:12px; margin-top:22px}
.stat{border:1px solid var(--line-soft); border-radius:12px; padding:14px 16px}
.stat .k{font-family:var(--mono); font-size:9.5px; letter-spacing:.18em; text-transform:uppercase; color:var(--dim)}
.stat .v{font-size:20px; font-weight:700; margin-top:6px}
.stat .v small{font-size:12px; color:var(--dim); font-weight:400}

/* FAQ */
.faq{margin-top:44px; border-top:1px solid var(--line-soft)}
.faq details{border-bottom:1px solid var(--line-soft); padding:4px 0}
.faq summary{cursor:pointer; padding:18px 0; font-size:17px; font-weight:600; color:var(--ink); list-style:none; display:flex; justify-content:space-between; gap:16px}
.faq summary::after{content:"+"; color:var(--mars); font-weight:400; font-size:20px}
.faq details[open] summary::after{content:"–"}
.faq .a{color:var(--muted); font-weight:300; line-height:1.7; padding:0 0 20px; max-width:66ch}

/* price tiles */
.tiers{display:grid; grid-template-columns:repeat(auto-fit,minmax(240px,1fr)); gap:18px; margin-top:40px}
.tier{border:1px solid var(--line-soft); border-radius:16px; padding:26px 24px;
  background:linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.008))}
.tier.hot{border-color:var(--mars); box-shadow:0 16px 48px rgba(216,74,38,.18)}
.tier .k{font-family:var(--mono); font-size:10px; letter-spacing:.22em; text-transform:uppercase; color:var(--dim)}
.tier .price{font-size:34px; font-weight:700; margin:12px 0 4px}
.tier .price small{font-size:14px; color:var(--dim); font-weight:400}
.tier ul{padding-left:18px; margin:14px 0 0; color:var(--muted); font-weight:300; font-size:14.5px; line-height:1.7}
.tier .soon{display:inline-block; margin-top:10px; font-family:var(--mono); font-size:9.5px; letter-spacing:.2em; text-transform:uppercase; color:var(--faint); border:1px solid var(--line-soft); border-radius:4px; padding:3px 8px}

/* reveals (JS-gated) */
.js .rv{opacity:0; transform:translateY(22px); transition:opacity .7s var(--ease), transform .7s var(--ease)}
.js .rv.in{opacity:1; transform:none}

/* footer */
footer.site{
  position:relative; z-index:1; border-top:1px solid var(--line-soft); margin-top:30px;
  padding:44px clamp(18px,5vw,42px) 52px;
}
.fgrid{max-width:1140px; margin:0 auto; display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:26px}
.fgrid .col h5{font-family:var(--mono); font-size:10px; letter-spacing:.22em; text-transform:uppercase; color:var(--faint); margin:0 0 14px}
.fgrid a{display:block; color:var(--muted); font-size:14px; margin-bottom:9px}
.fgrid a:hover{color:var(--mars)}
.fgrid .about{color:var(--dim); font-size:13.5px; font-weight:300; line-height:1.7; max-width:34ch}
.fbottom{max-width:1140px; margin:36px auto 0; display:flex; justify-content:space-between; gap:14px; flex-wrap:wrap;
  color:var(--faint); font-family:var(--mono); font-size:9.5px; letter-spacing:.2em; text-transform:uppercase}
@media (max-width:760px){ .fgrid{grid-template-columns:1fr 1fr} }

@media (prefers-reduced-motion:reduce){
  *{animation:none!important; transition:none!important}
  .js .rv{opacity:1; transform:none}
}