/* ============================================================
   SECOND MOUSE SYSTEMS — shared design system
   charcoal / warm paper / amber / cheese — workshop language
   ============================================================ */
:root{
  --coal:#121110; --coal-2:#181613; --coal-3:#1f1c17;
  --line:#2e2a22; --line-soft:#26221b;
  --paper:#ece4d2; --paper-dim:#d9d1bf; --mute:#9b9180;
  --amber:#f2a900; --amber-deep:#b07c12; --cheese:#ffd24a;
  --online:#8fb573; --radius:3px;
  --mono:ui-monospace,"SFMono-Regular","Cascadia Mono","Roboto Mono",Menlo,Consolas,monospace;
  --serif:"Iowan Old Style","Palatino Linotype",Palatino,"Book Antiqua",Georgia,serif;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--coal);color:var(--paper-dim);font-family:var(--sans);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img,svg{max-width:100%;height:auto}
a{color:var(--cheese)} a:hover{color:var(--amber)}
h1,h2,h3,h4{font-family:var(--serif);color:var(--paper);letter-spacing:-.01em}
button{font:inherit;cursor:pointer}
.wrap{width:100%;max-width:1060px;margin:0 auto;padding:0 20px}
.mono{font-family:var(--mono)}
.skip{position:absolute;left:-9999px;top:0;background:var(--amber);color:#1a1407;padding:10px 16px;font-family:var(--mono);z-index:100}
.skip:focus{left:12px;top:12px}
:focus-visible{outline:2px solid var(--cheese);outline-offset:2px}

.eyebrow{font-family:var(--mono);font-size:11px;letter-spacing:.24em;text-transform:uppercase;color:var(--amber);display:flex;align-items:center;gap:10px;margin-bottom:14px}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--amber-deep);flex:none}
.fig{font-family:var(--mono);font-size:10px;letter-spacing:.18em;color:var(--mute);text-transform:uppercase}

/* ---------- nav ---------- */
.nav{position:sticky;top:0;z-index:50;background:rgba(18,17,16,.93);backdrop-filter:blur(8px);border-bottom:1px solid var(--line-soft)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:10px 0;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--paper);font-family:var(--mono);font-size:12.5px;letter-spacing:.06em;min-height:44px}
.brand svg{flex:none}
.nav-links{display:flex;gap:2px;flex-wrap:wrap}
.nav-links a{font-family:var(--mono);font-size:12px;text-decoration:none;color:var(--paper-dim);padding:10px 10px;border-radius:var(--radius);min-height:44px;display:inline-flex;align-items:center;white-space:nowrap}
.nav-links a:hover{color:var(--cheese);background:var(--coal-3)}
.nav-links a[aria-current="page"]{color:var(--cheese);border-bottom:2px solid var(--amber);border-radius:0}
.nav-links a.cta-link{border:1px solid var(--amber-deep);color:var(--cheese)}

/* ---------- breadcrumbs ---------- */
.crumbs{font-family:var(--mono);font-size:11.5px;color:var(--mute);padding:16px 0 0}
.crumbs a{color:var(--mute);text-decoration:none}
.crumbs a:hover{color:var(--cheese)}
.crumbs span{color:var(--paper-dim)}

/* ---------- page heads ---------- */
.page-head{padding:56px 0 40px;border-bottom:1px solid var(--line-soft)}
.page-head h1{font-size:clamp(32px,5.6vw,56px);line-height:1.06;max-width:20ch}
.page-head .lede{margin-top:16px;max-width:60ch;font-size:clamp(16px,2vw,18.5px);font-family:var(--serif);color:var(--paper-dim)}
section{padding:64px 0;border-bottom:1px solid var(--line-soft)}
.sec-head{margin-bottom:34px;max-width:66ch}
.sec-head h2{font-size:clamp(25px,3.8vw,38px);line-height:1.12}
.sec-head p{margin-top:10px;color:var(--mute);font-size:16px}
.prose p{margin-bottom:14px;font-size:16px;color:var(--paper-dim);max-width:68ch}
.prose strong{color:var(--paper)}
.pull{font-family:var(--serif);font-style:italic;font-size:19px;color:var(--cheese);border-left:2px solid var(--amber-deep);padding-left:16px;margin:20px 0;max-width:56ch}

/* ---------- buttons ---------- */
.btn{font-family:var(--mono);font-size:13.5px;letter-spacing:.02em;text-decoration:none;padding:13px 20px;border-radius:var(--radius);display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;border:1px solid transparent;transition:.15s}
.btn-solid{background:var(--amber);color:#1a1407;font-weight:600;border-color:var(--amber)}
.btn-solid:hover{background:var(--cheese);border-color:var(--cheese);color:#1a1407}
.btn-ghost{background:transparent;color:var(--paper);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--amber);color:var(--cheese)}
.btn-row{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- hero (home) ---------- */
.hero{position:relative;border-bottom:1px solid var(--line-soft);overflow:hidden}
.hero-grid-bg{position:absolute;inset:0;background-image:linear-gradient(var(--line-soft) 1px,transparent 1px),linear-gradient(90deg,var(--line-soft) 1px,transparent 1px);background-size:56px 56px;opacity:.32;mask-image:radial-gradient(ellipse 90% 80% at 50% 30%,#000 40%,transparent 100%);-webkit-mask-image:radial-gradient(ellipse 90% 80% at 50% 30%,#000 40%,transparent 100%)}
.hero-inner{position:relative;padding:76px 0 64px}
.hero h1{font-size:clamp(32px,6vw,64px);line-height:1.06;max-width:22ch}
.hero .lede{margin-top:20px;max-width:62ch;font-size:clamp(16px,2vw,19px);font-family:var(--serif)}
.hero-chip{display:inline-flex;align-items:center;gap:10px;margin-top:22px;border:1px solid var(--amber-deep);border-radius:999px;padding:9px 18px;font-family:var(--mono);font-size:12.5px;color:var(--cheese)}
.hero-chip .dot{width:7px;height:7px;border-radius:50%;background:var(--online);animation:pulse 2.6s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:.4}50%{opacity:1}}

/* entrances */
.doors{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:10px}
.door{background:var(--coal-2);border:1px solid var(--line);border-radius:var(--radius);color:var(--paper-dim);text-align:left;padding:16px;font-size:14.5px;min-height:56px;text-decoration:none;display:flex;align-items:center;justify-content:space-between;gap:10px;transition:.15s}
.door:hover{border-color:var(--amber);color:var(--cheese)}
.door .arrow{font-family:var(--mono);color:var(--amber)}

/* ---------- cards ---------- */
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:16px}
.spec-card{background:var(--coal-2);border:1px solid var(--line);border-radius:6px;padding:20px;display:flex;flex-direction:column;gap:11px;transition:border-color .2s,transform .2s}
.spec-card:hover{border-color:var(--amber-deep);transform:translateY(-2px)}
.spec-top{display:flex;justify-content:space-between;align-items:flex-start;gap:10px;flex-wrap:wrap}
.spec-type{font-family:var(--mono);font-size:10.5px;letter-spacing:.12em;color:var(--mute);text-transform:uppercase}
.status{font-family:var(--mono);font-size:10.5px;letter-spacing:.05em;white-space:nowrap;display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;border:1px solid var(--line);color:var(--paper-dim)}
.status .s-dot{width:6px;height:6px;border-radius:50%;flex:none;background:var(--mute)}
.status[data-kind="demo"] .s-dot{background:var(--online)}
.status[data-kind="proto"] .s-dot{background:var(--cheese)}
.status[data-kind="case"] .s-dot{background:var(--amber-deep)}
.status[data-kind="protected"] .s-dot{background:var(--mute)}
.status[data-kind="dev"] .s-dot{background:var(--amber);animation:pulse 2s ease-in-out infinite}
.status[data-kind="exp"] .s-dot{background:#c98bd6}
.spec-card h3{font-size:20px;line-height:1.15}
.spec-card .blurb{font-size:14px;color:var(--paper-dim);flex:1}
.chip{font-family:var(--mono);font-size:10.5px;border:1px solid var(--line);border-radius:999px;padding:4px 10px;color:var(--mute);white-space:nowrap}
.chips{display:flex;flex-wrap:wrap;gap:6px}

/* ---------- filter bar ---------- */
.filter-bar{display:flex;flex-direction:column;gap:14px;margin-bottom:26px;background:var(--coal-2);border:1px solid var(--line);border-radius:6px;padding:16px}
.filter-group{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.filter-group .fg-label{font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--mute);min-width:74px}
.f-btn{font-family:var(--mono);font-size:11.5px;background:var(--coal-3);border:1px solid var(--line);border-radius:999px;color:var(--paper-dim);padding:8px 14px;min-height:38px}
.f-btn:hover{border-color:var(--amber-deep);color:var(--paper)}
.f-btn[aria-pressed="true"]{border-color:var(--amber);color:var(--cheese);background:rgba(242,169,0,.09)}
.filter-count{font-family:var(--mono);font-size:11.5px;color:var(--mute)}

/* ---------- detail drawers ---------- */
details.drawer{border-top:1px solid var(--line-soft);padding-top:10px}
details.drawer summary{font-family:var(--mono);font-size:12px;color:var(--mute);cursor:pointer;list-style:none;display:flex;align-items:center;gap:8px;min-height:40px}
details.drawer summary::-webkit-details-marker{display:none}
details.drawer summary::before{content:"+";color:var(--amber);font-size:14px}
details.drawer[open] summary::before{content:"−"}
details.drawer summary:hover{color:var(--paper-dim)}
.drawer-body{padding:8px 0 4px;font-size:13.5px;color:var(--paper-dim);line-height:1.65}
.drawer-body h4{font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--amber);margin:12px 0 6px;font-weight:400}
.drawer-body ul{list-style:none;margin-bottom:4px}
.drawer-body li{padding:4px 0 4px 18px;position:relative}
.drawer-body li::before{content:"›";position:absolute;left:0;color:var(--amber);font-family:var(--mono)}

/* ---------- light "field notebook" sections ---------- */
.notebook{background:var(--paper);color:#33302a;border-bottom:1px solid #d8cfba}
.notebook h2,.notebook h3{color:#1d1b17}
.notebook .eyebrow{color:var(--amber-deep)} .notebook .eyebrow::before{background:var(--amber-deep)}
.notebook .sec-head p,.notebook .prose p{color:#57503f}
.notebook .n-card{background:#fff;border:1px solid #d8cfba;border-radius:6px;padding:18px}
.notebook .chip{border-color:#d8cfba;color:#6d6656;background:#fff}

/* ---------- interactive panels ---------- */
.panel{background:var(--coal-2);border:1px solid var(--line);border-radius:6px;padding:20px;position:relative}
.panel .panel-label{position:absolute;top:-9px;left:16px;background:var(--coal);padding:0 10px;font-family:var(--mono);font-size:10px;letter-spacing:.18em;color:var(--mute);text-transform:uppercase}
.seg{display:flex;gap:8px;flex-wrap:wrap}
.seg .s-btn{font-family:var(--mono);font-size:12px;background:transparent;border:1px solid var(--line);border-radius:999px;color:var(--mute);padding:9px 15px;min-height:42px}
.seg .s-btn:hover{border-color:var(--amber-deep);color:var(--paper-dim)}
.seg .s-btn[aria-pressed="true"]{border-color:var(--amber);color:var(--cheese);background:rgba(242,169,0,.09)}
.stage-out{margin-top:16px}
.stage-out h3{font-size:20px;margin-bottom:8px}
.stage-out p{font-size:15px;max-width:56ch}
.stage-ex{margin-top:12px;font-family:var(--mono);font-size:12.5px;color:var(--mute);border-left:2px solid var(--amber-deep);padding-left:14px;line-height:1.8}
.stage-ex b{color:var(--cheese);font-weight:500}

/* ladder (what-is-a-system progression) */
.ladder{display:flex;flex-direction:column;gap:6px}
.rung{width:100%;text-align:left;background:var(--coal-2);border:1px solid var(--line);border-radius:var(--radius);color:var(--paper-dim);padding:13px 16px;font-size:14.5px;min-height:48px;display:flex;align-items:center;gap:12px}
.rung .r-num{font-family:var(--mono);font-size:10.5px;color:var(--amber);letter-spacing:.1em;flex:none}
.rung:hover{border-color:var(--amber-deep)}
.rung[aria-pressed="true"]{border-color:var(--amber);color:var(--cheese);background:rgba(242,169,0,.07)}

/* machine svg */
.machine .mod{fill:var(--coal-3);stroke:var(--line);stroke-width:1.5;transition:fill .3s,stroke .3s}
.machine .mod.on{fill:rgba(242,169,0,.16);stroke:var(--amber)}
.machine .mod-label{font-family:var(--mono);font-size:7.5px;fill:var(--mute);letter-spacing:.08em}
.machine .lab-on{fill:var(--cheese)}
.machine .wire{stroke:var(--line);stroke-width:1.5;fill:none;transition:stroke .3s}
.machine .wire.on{stroke:var(--amber-deep);stroke-dasharray:5 7;animation:flow 2.2s linear infinite}
@keyframes flow{to{stroke-dashoffset:-24}}

/* ---------- capability sections ---------- */
.cap-sec{scroll-margin-top:80px}
.cap-includes{display:flex;flex-wrap:wrap;gap:7px;margin:18px 0}
.cap-links{font-family:var(--mono);font-size:12px;color:var(--mute);margin-top:16px}
.cap-links a{text-decoration:none;border-bottom:1px dotted var(--amber-deep)}

/* ---------- demo shared widgets ---------- */
.d-grid{display:grid;gap:14px}
.d-cols{display:grid;grid-template-columns:220px 1fr;gap:14px}
.d-cols.even{grid-template-columns:1fr 1fr}
.d-panel{background:var(--coal);border:1px solid var(--line);border-radius:6px;padding:14px}
.d-label{font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--mute);margin-bottom:10px}
.d-item{width:100%;text-align:left;background:var(--coal-3);border:1px solid var(--line);border-radius:var(--radius);color:var(--paper-dim);padding:11px 12px;font-size:13.5px;margin-bottom:8px;min-height:44px;display:flex;align-items:center;justify-content:space-between;gap:8px}
.d-item:last-child{margin-bottom:0}
.d-item.active{border-color:var(--amber);color:var(--cheese);background:rgba(242,169,0,.08)}
.d-item.done{color:var(--online)}
.d-btn{font-family:var(--mono);font-size:12.5px;background:var(--amber);color:#1a1407;font-weight:600;border:1px solid var(--amber);border-radius:var(--radius);padding:11px 16px;min-height:44px}
.d-btn:hover{background:var(--cheese);border-color:var(--cheese)}
.d-btn.ghost{background:transparent;color:var(--paper-dim);border-color:var(--line);font-weight:400}
.d-btn.ghost:hover{border-color:var(--amber);color:var(--cheese)}
.d-btn.ghost.sel{border-color:var(--amber);color:var(--cheese);background:rgba(242,169,0,.1)}
.d-input{width:100%;background:var(--coal-3);border:1px solid var(--line);color:var(--paper);padding:11px 12px;font:inherit;font-size:14px;border-radius:var(--radius);min-height:44px}
.d-input:focus{outline:none;border-color:var(--amber)}
.d-row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.d-bar{height:8px;background:var(--coal-3);border:1px solid var(--line);border-radius:99px;overflow:hidden}
.d-bar span{display:block;height:100%;background:var(--demo-accent,var(--amber));width:0%;transition:width .3s}
.d-stat{background:var(--coal);border:1px solid var(--line);border-radius:6px;padding:12px;text-align:center}
.d-stat b{display:block;font-family:var(--serif);font-size:26px;color:var(--cheese);font-weight:600}
.d-stat span{font-family:var(--mono);font-size:10px;letter-spacing:.12em;color:var(--mute);text-transform:uppercase}
.d-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.d-note{font-family:var(--mono);font-size:11.5px;color:var(--mute);line-height:1.7;margin-top:12px}
.d-content{font-size:14.5px;color:var(--paper-dim);line-height:1.65}
.d-content h4{font-family:var(--serif);font-size:19px;color:var(--paper);margin-bottom:8px}
.d-table{width:100%;border-collapse:collapse;font-size:13px}
.d-table th{font-family:var(--mono);font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:var(--mute);text-align:left;padding:8px;border-bottom:1px solid var(--line)}
.d-table td{padding:9px 8px;border-bottom:1px solid var(--line-soft);color:var(--paper-dim)}

/* demo page chrome */
.demo-topbar{background:var(--coal-2);border-bottom:1px solid var(--line)}
.demo-topbar .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:12px;padding-bottom:12px;flex-wrap:wrap}
.demo-topbar .dt-title{font-family:var(--serif);font-size:18px;color:var(--paper)}
.demo-topbar .dt-tag{font-family:var(--mono);font-size:10.5px;letter-spacing:.12em;color:var(--amber);text-transform:uppercase;display:block}
.demo-banner{background:rgba(242,169,0,.07);border:1px solid var(--amber-deep);border-radius:6px;padding:12px 16px;font-family:var(--mono);font-size:12px;color:var(--cheese);line-height:1.7;margin:20px 0}

/* ---------- forms ---------- */
form{display:flex;flex-direction:column;gap:16px}
.field label{font-family:var(--mono);font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--mute);display:block;margin-bottom:8px}
.field .opt{color:var(--amber-deep);text-transform:none;letter-spacing:.02em}
input[type=text],input[type=email],input[type=tel],textarea,select{width:100%;background:var(--coal-2);border:1px solid var(--line);color:var(--paper);padding:13px 14px;font:inherit;font-size:15px;border-radius:var(--radius);min-height:48px}
textarea{min-height:120px;resize:vertical;line-height:1.55}
input:focus,textarea:focus,select:focus{outline:none;border-color:var(--amber);box-shadow:0 0 0 3px rgba(242,169,0,.14)}
.radio-row{display:flex;gap:8px;flex-wrap:wrap}
.radio-pill{position:relative}
.radio-pill input{position:absolute;opacity:0;inset:0;cursor:pointer}
.radio-pill span{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:10px 18px;border:1px solid var(--line);border-radius:999px;font-family:var(--mono);font-size:12.5px;color:var(--mute);transition:.15s}
.radio-pill input:checked+span{border-color:var(--amber);color:var(--cheese);background:rgba(242,169,0,.1)}
.radio-pill input:focus-visible+span{outline:2px solid var(--cheese);outline-offset:2px}
.check-line{display:flex;align-items:flex-start;gap:12px;cursor:pointer}
.check-line input{width:20px;height:20px;margin-top:2px;accent-color:var(--amber);flex:none;cursor:pointer}
.check-line span{font-size:14px;color:var(--paper-dim)}
.form-msg{font-family:var(--mono);font-size:13px;padding:14px 16px;border-radius:var(--radius);display:none;line-height:1.7}
.form-msg.ok{display:block;background:rgba(143,181,115,.1);border:1px solid rgba(143,181,115,.45);color:#c4dcb0}
.form-msg.err{display:block;background:rgba(242,169,0,.08);border:1px solid var(--amber-deep);color:var(--cheese)}
.privacy-note{font-family:var(--mono);font-size:11.5px;color:var(--mute);line-height:1.8}
.hidden-hp{position:absolute;left:-9999px;opacity:0;height:0;overflow:hidden}

/* ---------- footer ---------- */
footer{padding:48px 0 40px}
.foot-grid{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;align-items:flex-start}
.foot-brand{display:flex;flex-direction:column;gap:8px}
.fb-name{font-family:var(--serif);font-size:19px;color:var(--paper)}
.fb-tag{font-family:var(--mono);font-size:12px;color:var(--amber);display:flex;align-items:center;gap:10px}
.foot-links{display:flex;gap:2px;flex-wrap:wrap}
.foot-links a{font-family:var(--mono);font-size:11.5px;color:var(--mute);text-decoration:none;padding:10px 10px;min-height:44px;display:inline-flex;align-items:center;border-radius:var(--radius)}
.foot-links a:hover{color:var(--cheese);background:var(--coal-3)}
.foot-fine{margin-top:24px;font-family:var(--mono);font-size:11px;color:var(--mute);opacity:.75;max-width:70ch;line-height:1.8}

/* ---------- responsive ---------- */
@media(max-width:860px){
  .d-cols{grid-template-columns:1fr}
}
@media(max-width:620px){
  section{padding:48px 0}
  .page-head{padding:44px 0 34px}
  .hero-inner{padding:56px 0 48px}
  .d-stats{grid-template-columns:repeat(3,1fr)}
}
@media(max-width:400px){
  .wrap{padding:0 14px}
  .btn{width:100%}
  .btn-row{flex-direction:column}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
}