/* unhingedai.cc - DOORS OFF THE JAMB */
:root{
  --bone:#d3ddef;--bone2:#bcc9e2;--paper:#eaeffb;--ink:#102112;--ink2:#0a160b;--ink3:#1b3a1e;
  --cream:#d9e3f4;--mut:#455a4c;--mutd:#c7d8ce;
  --mg:#13a80f;--mgd:#0b6208;--mgb:#8ef78c;
  --brass:#3a63c9;--brassd:#112e70;--brassl:#7a94ec;
  --disp:"Alfa Slab One",Rockwell,"Roboto Slab",Georgia,serif;
  --body:"Work Sans",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --mono:"Lilex",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --hinge-pin:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='26' height='70'%3E%3Crect y='16' width='26' height='50' rx='2' fill='%23c9a03a'/%3E%3Cpath d='M0 17h26v2H0z' fill='%23ecd27a'/%3E%3Cg fill='%23705311'%3E%3Ccircle cx='4.5' cy='25' r='1.7'/%3E%3Ccircle cx='21.5' cy='25' r='1.7'/%3E%3Ccircle cx='4.5' cy='41' r='1.7'/%3E%3Ccircle cx='21.5' cy='41' r='1.7'/%3E%3Ccircle cx='4.5' cy='57' r='1.7'/%3E%3Ccircle cx='21.5' cy='57' r='1.7'/%3E%3C/g%3E%3Crect x='9' y='14' width='8' height='54' rx='3' fill='%23e3c358'/%3E%3Crect x='10.5' y='14' width='2' height='54' fill='%23f6e7a6'/%3E%3Cpath d='M9 31h8v2H9zM9 49h8v2H9z' fill='%23705311'/%3E%3Crect x='11.5' y='3' width='3' height='13' fill='%23f36bf5'/%3E%3Ccircle cx='13' cy='4' r='4' fill='%23f36bf5'/%3E%3C/svg%3E");
  --hinge:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='26' height='56'%3E%3Crect y='3' width='26' height='50' rx='2' fill='%23c9a03a'/%3E%3Cpath d='M0 4h26v2H0z' fill='%23ecd27a'/%3E%3Cg fill='%23705311'%3E%3Ccircle cx='4.5' cy='12' r='1.7'/%3E%3Ccircle cx='21.5' cy='12' r='1.7'/%3E%3Ccircle cx='4.5' cy='28' r='1.7'/%3E%3Ccircle cx='21.5' cy='28' r='1.7'/%3E%3Ccircle cx='4.5' cy='44' r='1.7'/%3E%3Ccircle cx='21.5' cy='44' r='1.7'/%3E%3C/g%3E%3Crect x='9' y='0' width='8' height='56' rx='3' fill='%23e3c358'/%3E%3Crect x='10.5' y='0' width='2' height='56' fill='%23f6e7a6'/%3E%3Cpath d='M9 18h8v2H9zM9 36h8v2H9z' fill='%23705311'/%3E%3C/svg%3E");
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:100px}
body{margin:0;background:var(--bone);color:var(--ink);font:400 17px/1.62 var(--body);overflow-x:hidden;
  background-image:repeating-linear-gradient(90deg,rgba(16,33,18,.022) 0 2px,transparent 2px 9px,rgba(16,33,18,.014) 9px 10px,transparent 10px 23px)}
body{min-height:100vh;display:flex;flex-direction:column}
main{flex:1 0 auto}
img,svg{max-width:100%}
a{color:var(--mg);text-underline-offset:3px;text-decoration-thickness:2px}
a:hover{color:var(--mgd)}
h1,h2,h3,p,ul,ol{margin:0}
h1,h2{font-family:var(--disp);font-weight:400;letter-spacing:.005em;text-wrap:balance;overflow-wrap:break-word}
h3{font:700 18px/1.3 var(--body)}
code,pre,kbd{font-family:var(--mono)}
:focus-visible{outline:3px solid var(--mg);outline-offset:3px;border-radius:2px}
.lintel :focus-visible,.sill :focus-visible,.leaf--ink :focus-visible,pre :focus-visible,.codebox :focus-visible{outline-color:var(--mgb)}
.leaf--mg :focus-visible{outline-color:#ffffff}
.skip{position:absolute;left:12px;top:-80px;z-index:99;background:var(--paper);color:var(--ink);padding:12px 18px;border:2px solid var(--ink);border-radius:4px;font-weight:700}
.skip:focus{top:12px}

/* ---------- buttons: push plates with a lip ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:10px 22px;border:0;border-radius:6px;cursor:pointer;
  background:var(--mg);color:#ffffff;font:700 16px/1.15 var(--body);text-decoration:none;text-align:center;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.32),inset 0 -2px 0 rgba(0,0,0,.14),0 5px 0 var(--mgd);
  transform:translateY(-2px);transition:transform .08s,box-shadow .08s,background .15s}
.btn:hover{background:#1dbb19;color:#ffffff}
.btn:active{transform:translateY(3px);box-shadow:inset 0 1px 0 rgba(255,255,255,.2),0 0 0 var(--mgd)}
.btn[disabled]{opacity:.6;cursor:progress}
.btn.ghost{background:var(--paper);color:var(--ink);box-shadow:inset 0 0 0 2px var(--ink),0 5px 0 var(--ink)}
.btn.ghost:hover{background:#ffffff;color:var(--ink)}
.btn.ghost:active{box-shadow:inset 0 0 0 2px var(--ink),0 0 0 var(--ink)}
.btn.sm{min-height:44px;padding:8px 14px;font-size:14.5px}
.btn.big{min-height:56px;padding:12px 28px;font-size:17.5px}
.btn.wide{width:100%}
.btns{display:flex;flex-wrap:wrap;gap:16px 14px;align-items:center}

/* ---------- lintel (header) ---------- */
.lintel{position:sticky;top:0;z-index:60;background:var(--ink);color:var(--cream);border-bottom:6px solid var(--ink2);box-shadow:0 3px 0 var(--brass)}
.lintel-in{max-width:1288px;margin:0 auto;padding:10px 24px;min-height:70px;display:flex;align-items:center;gap:18px}
.logo{display:inline-flex;align-items:center;gap:11px;min-height:44px;min-width:0;color:var(--cream);text-decoration:none;font:400 22px/1 var(--disp);letter-spacing:.01em}
.logo span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.logo:hover{color:#ffffff}
.mark{flex:none;display:block}
.nav{display:flex;gap:6px;margin-left:auto}
.nav a{display:flex;align-items:center;min-height:44px;padding:0 15px;border-radius:4px;color:var(--cream);font:600 15px/1 var(--body);text-decoration:none;
  border:1px solid rgba(217,227,244,.2);background:rgba(255,255,255,.03)}
.nav a:hover{background:rgba(255,255,255,.1);color:#ffffff}
.nav a[aria-current]{background:var(--bone);color:var(--ink);border-color:var(--bone);padding:0 22px;
  background-image:radial-gradient(circle at 8px 50%,var(--brassd) 2px,transparent 2.6px),radial-gradient(circle at calc(100% - 8px) 50%,var(--brassd) 2px,transparent 2.6px)}
.lintel .cta{flex:none;box-shadow:inset 0 1px 0 rgba(255,255,255,.32),0 5px 0 #084c06}
.burger{display:none;flex:none;width:46px;height:46px;align-items:center;justify-content:center;border-radius:4px;border:1px solid rgba(217,227,244,.3);background:rgba(255,255,255,.05);color:var(--cream);cursor:pointer;padding:0}

/* ---------- frame: jamb + leaves + rail ---------- */
.frame{position:relative;max-width:1288px;margin:0 auto;padding:46px 24px 104px 66px;display:grid;
  grid-template-columns:minmax(0,1fr) 348px;grid-template-areas:"top rail" "rest rail";column-gap:56px}
.frame::before{content:"";position:absolute;left:24px;top:0;bottom:0;width:18px;
  background:linear-gradient(90deg,var(--ink2) 0 3px,var(--ink3) 3px 6px,var(--ink) 6px 14px,var(--ink2) 14px)}
.page-key .frame{grid-template-columns:minmax(0,1fr) 448px}
.top{grid-area:top;min-width:0;padding-bottom:8px}
.rest{grid-area:rest;min-width:0}
.rail{grid-area:rail;min-width:0;align-self:start;position:sticky;top:104px;max-height:calc(100vh - 124px);overflow-y:auto;overflow-x:hidden;padding:2px 2px 10px;scrollbar-width:thin}
.top>h1,.top>.lead,.top>.eyebrow,.top>.crumbs,.top>.pins,.top>.btns,.top>.sub,.top>.upd,.top>.chips,.sh{margin-left:20px}

h1{font-size:clamp(33px,4.5vw,60px);line-height:1.06;margin-bottom:22px;max-width:17em}
.page-home h1{font-size:clamp(33px,4.7vw,64px)}
.lead{font-size:clamp(18px,1.5vw,21px);line-height:1.55;color:#263a2a;max-width:44em}
.eyebrow{display:inline-flex;align-items:center;min-height:32px;margin-bottom:22px;padding:4px 26px;border-radius:3px;font:600 13px/1.3 var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--ink);
  background:var(--brass);box-shadow:inset 0 1px 0 var(--brassl),inset 0 -2px 0 rgba(17,46,112,.55);
  background-image:radial-gradient(circle at 11px 50%,var(--brassd) 2.2px,transparent 2.8px),radial-gradient(circle at calc(100% - 11px) 50%,var(--brassd) 2.2px,transparent 2.8px)}
.pins{list-style:none;padding:0;margin-top:24px;display:grid;gap:10px;max-width:46em}
.pins li{position:relative;padding-left:30px;font-weight:500}
.pins li::before{content:"";position:absolute;left:4px;top:.28em;width:5px;height:17px;border-radius:0 0 2px 2px;background:var(--mg)}
.pins li::after{content:"";position:absolute;left:0;top:.12em;width:13px;height:7px;border-radius:4px;background:var(--mg)}
.top>.btns{margin-top:32px}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:2px 10px;margin-bottom:20px;font:400 13.5px/1.4 var(--mono);color:var(--mut)}
.crumbs a{display:inline-flex;align-items:center;min-height:44px;color:var(--ink);font-weight:600}
.crumbs i{font-style:normal;color:var(--brassd)}
.crumbs span{overflow-wrap:anywhere}
.sub{margin-top:16px;font-weight:600;color:var(--ink)}
.upd{margin-top:18px;font:400 14px/1.4 var(--mono);color:var(--mut)}
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.chips code{padding:8px 13px;border-radius:4px;background:var(--ink);color:var(--cream);font-size:14px;overflow-wrap:anywhere;box-shadow:inset 3px 0 0 var(--brass)}

/* section headings with a brass number plate */
.rest{counter-reset:sec}
.sec{margin-top:64px}
.rest>.sec:first-child{margin-top:38px}
.sec-prose+.sec,.sec+.sec-prose{margin-top:56px}
.sh{display:flex;align-items:center;gap:16px;font-size:clamp(25px,2.6vw,34px);line-height:1.12;margin-bottom:24px}
.rest .sh::before{counter-increment:sec;content:counter(sec,decimal-leading-zero);flex:none;display:inline-flex;align-items:center;justify-content:center;min-width:62px;height:36px;padding:0 16px;border-radius:3px;
  font:600 14px/1 var(--mono);color:var(--ink);background:var(--brass);box-shadow:inset 0 1px 0 var(--brassl),inset 0 -2px 0 rgba(17,46,112,.55);
  background-image:radial-gradient(circle at 7px 50%,var(--brassd) 2px,transparent 2.6px),radial-gradient(circle at calc(100% - 7px) 50%,var(--brassd) 2px,transparent 2.6px)}
.sh-try{margin-top:50px;font-size:clamp(22px,2vw,27px);margin-bottom:20px}

/* ---------- the door leaf ---------- */
.leaf{position:relative;padding:34px 38px 36px;border-radius:2px 7px 7px 2px;min-height:168px;
  transform-origin:0 50%;transform:perspective(2400px) rotateY(var(--sw,0deg));transition:transform .55s cubic-bezier(.2,.9,.25,1);
  box-shadow:0 22px 26px -22px rgba(16,33,18,.55)}
.leaf:hover,.leaf:focus-within{transform:perspective(2400px) rotateY(0deg)}
.leaf::before,.leaf::after{content:"";position:absolute;left:-15px;width:26px;background-repeat:no-repeat;pointer-events:none}
.leaf::before{top:10px;height:70px;background-image:var(--hinge-pin)}
.leaf::after{bottom:24px;height:56px;background-image:var(--hinge)}
.leaf--ink{background:var(--ink);color:var(--cream);box-shadow:inset -7px 0 0 var(--ink2),0 22px 26px -22px rgba(16,33,18,.6)}
.leaf--paper{background:var(--paper);color:var(--ink);box-shadow:inset 0 0 0 2px var(--ink),inset -8px 0 0 var(--bone2),0 22px 26px -22px rgba(16,33,18,.5)}
.leaf--mg{background:var(--mg);color:#ffffff;box-shadow:inset -7px 0 0 var(--mgd),0 22px 26px -22px rgba(16,33,18,.6)}
.leaf--code{--sw:3.2deg;padding:20px 22px 24px 26px}
.sec-feat .leaf{--sw:1.5deg}
.sec-use .leaf{--sw:2.4deg}
.sec-steps .leaf{--sw:.9deg}
.sec-ex .leaf,.sec-ben .leaf{--sw:1.8deg}
.take{--sw:1.4deg}
.cta-leaf{--sw:2.6deg}

/* recessed door panels */
.panels{display:grid;gap:16px;grid-template-columns:repeat(2,minmax(0,1fr))}
.panels.p3{grid-template-columns:repeat(3,minmax(0,1fr))}
.pan{min-width:0;padding:22px 22px 24px;border-radius:3px;background:rgba(0,0,0,.26);box-shadow:inset 3px 3px 0 rgba(0,0,0,.5),inset -2px -2px 0 rgba(255,255,255,.09)}
.pan h3{margin-bottom:9px;font-size:18.5px}
.pan p{font-size:15.5px;line-height:1.58;color:var(--mutd)}
.leaf--ink .pan h3{color:#ffffff}
.leaf--mg .pan{background:rgba(0,0,0,.2);box-shadow:inset 3px 3px 0 rgba(0,0,0,.35),inset -2px -2px 0 rgba(255,255,255,.2)}
.leaf--mg .pan p{color:#eafdea}
.p6 .pan h3::before,.p4 .pan h3::before{content:"";display:block;width:34px;height:5px;border-radius:3px;margin-bottom:14px;background:var(--brass);box-shadow:inset 0 1px 0 var(--brassl)}
.leaf--mg .pan h3::before{background:var(--brassl)}

/* steps: a staircase up to the door */
.stairs{list-style:none;padding:0;margin:0;counter-reset:st;display:grid;gap:14px}
.stairs li{counter-increment:st;position:relative;min-width:0;padding:20px 22px 20px 92px;background:#ffffff;border-radius:3px;box-shadow:inset 0 0 0 2px var(--ink),0 9px 0 var(--ink)}
.stairs li::before{content:counter(st);position:absolute;left:0;top:0;bottom:0;width:70px;display:flex;align-items:center;justify-content:center;background:var(--mg);color:#ffffff;font:400 34px/1 var(--disp);border-radius:3px 0 0 3px;box-shadow:inset 0 0 0 2px var(--ink)}
.stairs li:nth-child(2){margin-left:38px}
.stairs li:nth-child(3){margin-left:76px}
.stairs{padding-bottom:9px}
.stairs h3{margin-bottom:6px}
.stairs p{font-size:15.5px;line-height:1.58;color:#263a2a}

/* ---------- code ---------- */
pre.code{position:relative;margin:0;border-radius:4px;background:var(--ink2);color:var(--cream);box-shadow:inset 3px 3px 0 rgba(0,0,0,.55),inset -1px -1px 0 rgba(255,255,255,.08);max-width:100%}
pre.code code{display:block;overflow-x:auto;padding:20px 22px 22px;font:400 14px/1.7 var(--mono);white-space:pre;tab-size:2;scrollbar-width:thin;scrollbar-color:var(--brass) transparent}
pre.code .k{color:var(--mgb)}
pre.code .s{color:var(--brassl)}
pre.code .c{color:#a3b9a9;font-style:italic}
pre.code .copy{position:absolute;top:8px;right:8px;z-index:2;min-width:64px;min-height:44px;padding:0 14px;border:0;border-radius:3px;cursor:pointer;
  font:600 12.5px/1 var(--mono);letter-spacing:.04em;text-transform:uppercase;color:var(--ink);background:var(--brass);box-shadow:inset 0 1px 0 var(--brassl),0 3px 0 var(--brassd)}
pre.code .copy:hover{background:var(--brassl)}
pre.code .copy:active{transform:translateY(3px);box-shadow:none}
pre.code:has(.copy) code{padding-top:58px}
.codebox{min-width:0}
.codetabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.codetabs button{min-height:44px;padding:0 20px;border-radius:3px;cursor:pointer;font:600 14px/1 var(--mono);color:var(--cream);background:rgba(255,255,255,.05);border:1px solid rgba(217,227,244,.28)}
.codetabs button:hover{background:rgba(255,255,255,.13)}
.codetabs button[aria-selected="true"]{background:var(--bone);color:var(--ink);border-color:var(--bone);padding:0 26px;
  background-image:radial-gradient(circle at 9px 50%,var(--brassd) 2px,transparent 2.6px),radial-gradient(circle at calc(100% - 9px) 50%,var(--brassd) 2px,transparent 2.6px)}
:not(pre)>code{font-size:.9em;padding:2px 6px;border-radius:3px;background:rgba(16,33,18,.09);overflow-wrap:anywhere}
.chips code,.keyout code{background:var(--ink);color:var(--cream)}

/* ---------- prose ---------- */
.prose{padding:44px 48px 48px}
.prose>*{max-width:70ch}
.prose>pre,.prose>table,.prose>.codebox{max-width:100%}
.prose h2{font-size:clamp(24px,2.3vw,31px);line-height:1.15;margin:48px 0 16px;padding-top:22px;border-top:2px solid var(--ink);position:relative}
.prose h2::before{content:"";position:absolute;left:0;top:-2px;width:56px;height:8px;background:var(--mg)}
.prose>h2:first-child{margin-top:0}
.prose h3{font-size:20px;margin:32px 0 10px}
.prose p{margin:0 0 17px}
.prose ul,.prose ol{margin:0 0 20px;padding-left:24px}
.prose li{margin-bottom:8px}
.prose li::marker{color:var(--mg);font-weight:700}
.prose pre.code{margin:22px 0 26px}
.prose strong{font-weight:700}
.prose blockquote{margin:22px 0;padding:14px 20px;border-left:6px solid var(--brass);background:rgba(58,99,201,.14)}
.prose table{display:block;overflow-x:auto;border-collapse:collapse;margin:24px 0 28px;font-size:15.5px;line-height:1.45;-webkit-overflow-scrolling:touch}
.prose th,.prose td{padding:12px 16px;text-align:left;vertical-align:top;border:2px solid var(--ink);min-width:120px}
.prose th{background:var(--ink);color:var(--cream);font-weight:700;border-color:var(--ink)}
.prose tr:nth-child(even) td{background:rgba(16,33,18,.05)}
.prose--read{font-size:18px;line-height:1.72}
.prose--read>*{max-width:66ch}
.prose--read>pre,.prose--read>table{max-width:100%}

/* takeaways */
.take{margin:34px 0 4px}
.take h2{font-size:24px;margin-bottom:18px;color:#ffffff}
.take ol{list-style:none;padding:0;counter-reset:tk;display:grid;gap:12px;grid-template-columns:repeat(2,minmax(0,1fr))}
.take li{counter-increment:tk;position:relative;padding:16px 18px 18px 54px;border-radius:3px;font-size:15.5px;line-height:1.55;background:rgba(0,0,0,.26);box-shadow:inset 3px 3px 0 rgba(0,0,0,.5),inset -2px -2px 0 rgba(255,255,255,.09)}
.take li::before{content:counter(tk);position:absolute;left:16px;top:15px;width:26px;height:26px;border-radius:50%;display:flex;align-items:center;justify-content:center;font:600 13px/1 var(--mono);color:var(--ink);background:var(--brass);box-shadow:inset 0 1px 0 var(--brassl)}

/* ---------- FAQ ---------- */
.faq{padding:14px 38px 18px}
.faq details{border-bottom:2px solid var(--ink)}
.faq details:last-child{border-bottom:0}
.faq summary{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:64px;padding:14px 0;cursor:pointer;list-style:none;font:700 18px/1.35 var(--body)}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";flex:none;width:30px;height:30px;border-radius:50%;
  background:linear-gradient(var(--ink),var(--ink)) 50% 50%/14px 3px no-repeat,linear-gradient(var(--ink),var(--ink)) 50% 50%/3px 14px no-repeat,radial-gradient(circle at 35% 30%,var(--brassl),var(--brass) 62%,var(--brassd));
  box-shadow:0 3px 0 var(--brassd);transition:transform .25s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq summary:hover{color:var(--mg)}
.faq details p{padding:0 46px 22px 0;max-width:68ch;color:#263a2a}

/* ---------- CTA leaf ---------- */
.cta-leaf{padding:44px 84px 48px 44px}
.cta-leaf h2{font-size:clamp(27px,3vw,40px);line-height:1.1;color:#ffffff;margin-bottom:12px}
.cta-leaf>p{color:var(--mutd);max-width:44em}
.cta-leaf .btns{margin-top:28px}
.cta-leaf .btn{box-shadow:inset 0 1px 0 rgba(255,255,255,.32),0 5px 0 #084c06}
.cta-leaf .btn.ghost{box-shadow:inset 0 0 0 2px var(--bone2),0 5px 0 #000000}
.knob{position:absolute;right:30px;top:50%;width:30px;height:30px;margin-top:-15px;border-radius:50%;background:radial-gradient(circle at 35% 30%,#bac6fb,var(--brass) 55%,var(--brassd));box-shadow:0 0 0 7px rgba(58,99,201,.28),3px 5px 0 rgba(0,0,0,.45)}

/* ---------- rail: the action door ---------- */
.door{position:relative;padding:38px 24px 26px;border-radius:6px;background:var(--paper);box-shadow:inset 0 0 0 2px var(--ink),0 7px 0 var(--ink)}
.door::before{content:"";position:absolute;left:2px;right:2px;top:2px;height:16px;border-radius:4px 4px 0 0;background:var(--brass);box-shadow:inset 0 1px 0 var(--brassl),inset 0 -2px 0 rgba(17,46,112,.6);
  background-image:radial-gradient(circle at 12px 50%,var(--brassd) 2.2px,transparent 2.8px),radial-gradient(circle at calc(100% - 12px) 50%,var(--brassd) 2.2px,transparent 2.8px)}
.door-art{display:block;width:176px;height:auto;margin:-4px auto 12px}
.door-h{font-size:23px;line-height:1.15;margin-bottom:10px}
.door-p{font-size:15.5px;line-height:1.5;color:var(--mut);margin-bottom:20px}
.door-cta{margin-top:22px;padding-top:20px;border-top:2px solid var(--ink)}
.facts{list-style:none;padding:0;margin:26px 0 0;border-top:2px solid var(--ink)}
.facts li{display:flex;align-items:baseline;justify-content:space-between;gap:14px;padding:11px 0;border-bottom:1px solid rgba(16,33,18,.28)}
.facts li:last-child{border-bottom:0;padding-bottom:0}
.facts b{font:400 21px/1.1 var(--disp);color:var(--mg);white-space:nowrap}
.facts span{font:400 12.5px/1.35 var(--mono);color:var(--mut);text-align:right}
.toc{list-style:none;padding:0;margin:6px 0 0;counter-reset:toc}
.toc li{counter-increment:toc;border-bottom:1px solid rgba(16,33,18,.22)}
.toc li:last-child{border-bottom:0}
.toc a{display:flex;gap:12px;align-items:baseline;min-height:44px;padding:10px 0;font-size:15px;line-height:1.35;font-weight:500;color:var(--ink);text-decoration:none}
.toc a::before{content:counter(toc,decimal-leading-zero);flex:none;font:600 12px/1.6 var(--mono);color:var(--mg)}
.toc a:hover{color:var(--mg);text-decoration:underline}

/* pricing plates */
.plates{list-style:none;padding:0;margin:30px 0 0;display:grid;gap:22px 14px;grid-template-columns:repeat(6,minmax(0,1fr))}
.plates li{grid-column:span 2;min-width:0;position:relative;padding:26px 20px 20px;border-radius:4px;background:var(--paper);box-shadow:inset 0 0 0 2px var(--ink),0 7px 0 var(--ink);
  background-image:radial-gradient(circle at 12px 12px,var(--brassd) 2.4px,transparent 3px),radial-gradient(circle at calc(100% - 12px) 12px,var(--brassd) 2.4px,transparent 3px)}
.plates li:nth-child(-n+2){grid-column:span 3;background-color:var(--ink);color:var(--cream);box-shadow:inset 0 0 0 2px var(--ink),0 7px 0 var(--ink2);
  background-image:radial-gradient(circle at 12px 12px,var(--brass) 2.4px,transparent 3px),radial-gradient(circle at calc(100% - 12px) 12px,var(--brass) 2.4px,transparent 3px)}
.plates b{display:block;font:400 30px/1 var(--disp);color:var(--mg)}
.plates li:nth-child(-n+2) b{font-size:clamp(40px,4.6vw,58px);color:var(--mgb)}
.plates span{display:block;margin-top:10px;font:400 13px/1.4 var(--mono);color:var(--mut)}
.plates li:nth-child(-n+2) span{color:var(--mutd)}

/* calculator */
.calc{display:grid;gap:16px}
.calc>div{min-width:0}
.calc label,.form label,[data-support] label{display:block;margin-bottom:7px;font:600 13px/1.3 var(--mono);letter-spacing:.03em;color:var(--ink)}
.calc output{display:block;padding:16px 18px;border-radius:4px;background:var(--ink);color:var(--mgb);font:400 36px/1.1 var(--disp);overflow-wrap:anywhere;box-shadow:inset 3px 3px 0 rgba(0,0,0,.55)}
input,select,textarea{width:100%;min-height:50px;padding:11px 14px;border:2px solid var(--ink);border-radius:4px;background:#ffffff;color:var(--ink);font:500 16px/1.4 var(--body);box-shadow:inset 0 3px 0 rgba(16,33,18,.1)}
textarea{min-height:150px;resize:vertical}
input:focus,select:focus,textarea:focus{outline:3px solid var(--mg);outline-offset:2px}
.calc input{font-family:var(--mono)}

/* ---------- signup ---------- */
.door--form{padding:36px 28px 30px}
.door--form .door-h{font-size:26px;margin-bottom:18px}
.form{min-width:0}
.tabs2{display:grid;grid-template-columns:1fr 1fr;gap:0;margin-bottom:18px;border-radius:5px;box-shadow:inset 0 0 0 2px var(--ink);padding:4px;background:#ffffff}
.tabs2 button{min-height:44px;padding:6px 8px;border:0;border-radius:3px;background:transparent;color:var(--ink);font:700 15px/1.2 var(--body);cursor:pointer}
.tabs2 button[aria-selected="true"]{background:var(--ink);color:var(--cream)}
.tabs2[hidden],.form form[hidden]{display:none}
.msg{font-size:15px;line-height:1.45}
.msg:empty{display:none}
.msg.err{margin-bottom:16px;padding:12px 14px;border-radius:4px;background:#dffaff;color:#09737d;box-shadow:inset 5px 0 0 #1eabb3;font-weight:600}
.row{margin-bottom:16px;min-width:0}
.note{margin:8px 0 0;font-size:13.5px;line-height:1.45;color:var(--mut)}
.form form>.btn{width:100%;min-height:56px;margin-top:6px;font-size:17px}
.form form>.note{margin-top:16px;text-align:center}
a.btn.ghost[data-gauth]{width:100%;margin-bottom:4px}
.door--form>.note,.door--form p.note{margin-bottom:14px}
.keyout{display:none}
.keyout.on{display:block}
.keyout h3{font:400 22px/1.2 var(--disp);margin-bottom:12px}
.keybox{display:flex;align-items:center;gap:10px;padding:10px 10px 10px 14px;border-radius:4px;background:var(--ink);color:var(--mgb);box-shadow:inset 3px 3px 0 rgba(0,0,0,.55)}
.keybox span{flex:1;min-width:0;font:600 14px/1.45 var(--mono);overflow-wrap:anywhere;word-break:break-all}
.keybox .btn{flex:none;transform:none;box-shadow:inset 0 1px 0 rgba(255,255,255,.3)}
.keyout p{margin:14px 0 0;font-size:15px;line-height:1.75;overflow-wrap:anywhere}
.keyout p.note{font-size:13.5px;line-height:1.45;margin-top:10px}
.acts{display:flex;flex-wrap:wrap;gap:14px 10px;margin-top:22px}
.mut{color:var(--mut)}

/* ---------- support ---------- */
.support{padding:40px 44px 44px}
[data-support]{display:grid;gap:4px;max-width:640px}
[data-support] button{justify-self:start;min-height:52px;padding:10px 30px;border:0;border-radius:6px;cursor:pointer;background:var(--mg);color:#ffffff;font:700 16.5px/1.15 var(--body);box-shadow:inset 0 1px 0 rgba(255,255,255,.32),0 5px 0 var(--mgd);margin-top:6px}
[data-support] button:active{transform:translateY(4px);box-shadow:none}
[data-support] output,[data-support] .out{display:block;margin-top:14px;font-weight:600;overflow-wrap:anywhere}
.support>p,.support>h2{margin-bottom:16px}

/* ---------- 404 ---------- */
.nf{display:grid;grid-template-columns:230px minmax(0,1fr);gap:40px;align-items:center;margin-left:20px;padding:20px 0 60px}
.nf .door-art{width:230px;margin:0;transform:rotate(-7deg);transform-origin:20% 90%}
.nf .btns{margin-top:30px}

/* ---------- sill (footer) ---------- */
.sill{background:var(--ink);color:var(--cream);border-top:10px solid var(--brass);box-shadow:inset 0 3px 0 var(--brassd)}
.sill-in{max-width:1288px;margin:0 auto;padding:54px 24px 34px;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:36px 56px}
.sill-brand p{margin:12px 0 24px;color:var(--mutd);max-width:30em}
.sill-links{list-style:none;padding:0;margin:0;columns:2;column-gap:32px}
.sill-links li{break-inside:avoid}
.sill-links a{display:inline-flex;align-items:center;min-height:44px;color:var(--cream);font-weight:500;text-decoration-color:rgba(217,227,244,.35)}
.sill-links a:hover{color:var(--mgb)}
.legal{grid-column:1/-1;padding-top:22px;border-top:1px solid rgba(217,227,244,.22);font:400 13px/1.6 var(--mono);color:var(--mutd)}

/* ---------- responsive ---------- */
@media (max-width:1180px){
  .frame{column-gap:40px;grid-template-columns:minmax(0,1fr) 320px}
  .page-key .frame{grid-template-columns:minmax(0,1fr) 400px}
  .panels.p3{grid-template-columns:1fr}
  .nav a{padding:0 11px}
  .nav a[aria-current]{padding:0 19px}
}
@media (max-width:1020px){
  .burger{display:inline-flex}
  .lintel .cta{margin-left:auto}
  .nav{display:none;position:absolute;left:0;right:0;top:100%;margin:0;padding:14px 16px 20px;flex-direction:column;gap:8px;background:var(--ink);border-bottom:6px solid var(--ink2);box-shadow:0 3px 0 var(--brass)}
  .nav.open{display:flex}
  .nav a{min-height:48px;font-size:16.5px}
}
@media (max-width:940px){
  .frame,.page-key .frame{grid-template-columns:minmax(0,1fr);grid-template-areas:"top" "rail" "rest";padding:30px 16px 72px 24px;row-gap:34px}
  .frame::before{left:6px;width:12px;background:linear-gradient(90deg,var(--ink2) 0 2px,var(--ink) 2px 10px,var(--ink2) 10px)}
  .frame.rail-last{grid-template-areas:"top" "rest" "rail"}
  .rail{position:static;max-height:none;overflow:visible;padding:0 0 8px}
  .leaf,.leaf:hover,.leaf:focus-within{transform:none}
  .leaf::before,.leaf::after{left:-18px}
  .top>h1,.top>.lead,.top>.eyebrow,.top>.crumbs,.top>.pins,.top>.btns,.top>.sub,.top>.upd,.top>.chips,.sh{margin-left:10px}
  .door,.door--form{margin-left:10px}
  .door-art{width:140px}
  .sec{margin-top:52px}
  .rest>.sec:first-child{margin-top:0}
  .nf{margin-left:10px}
}
@media (max-width:640px){
  body{font-size:16.5px}
  .lintel-in{padding:8px 12px;gap:10px;min-height:64px}
  .logo{font-size:18px;gap:8px}
  .mark{width:30px;height:30px}
  .lintel .cta{min-height:44px;padding:8px 12px;font-size:14px}
  .leaf{padding:26px 18px 28px 22px}
  .leaf--code{padding:16px 12px 18px 18px}
  .prose,.support{padding:30px 18px 32px 22px}
  .faq{padding:8px 18px 10px 22px}
  .faq details p{padding-right:0}
  .faq summary{font-size:17px}
  .cta-leaf{padding:34px 22px 84px 24px}
  .knob{top:auto;bottom:26px;right:26px;margin:0}
  .panels,.take ol{grid-template-columns:1fr}
  .stairs li{padding:18px 16px 18px 70px}
  .stairs li::before{width:54px;font-size:28px}
  .stairs li:nth-child(2){margin-left:10px}
  .stairs li:nth-child(3){margin-left:20px}
  .plates{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
  .plates li,.plates li:nth-child(-n+2){grid-column:span 1}
  .plates li:last-child{grid-column:1/-1}
  .plates b{font-size:26px}
  .plates li:nth-child(-n+2) b{font-size:36px}
  .btn.big{min-height:54px;padding:12px 22px;font-size:17px}
  .top>.btns .btn{flex:1 1 100%}
  .door--form{padding:34px 18px 26px}
  pre.code code{padding:18px 16px 20px;font-size:13px}
  .codetabs button{padding:0 14px}
  .codetabs button[aria-selected="true"]{padding:0 22px}
  .sill-in{grid-template-columns:1fr;padding:44px 16px 30px}
  .nf{grid-template-columns:1fr;gap:16px}
  .nf .door-art{width:170px}
  .prose th,.prose td{padding:10px 12px}
  .sh{gap:12px}
  .rest .sh::before{min-width:52px;height:32px;padding:0 13px}
}
@media (max-width:380px){
  .logo{font-size:16px}
  .lintel .cta{padding:8px 10px;font-size:13.5px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none!important;animation:none!important}
}