/* =========================================================
   ZygiskNext.com — "Blueprint" design system
   px font sizes; edit palette in :root
   ========================================================= */
@font-face{font-family:"Poppins";font-style:normal;font-weight:400;font-display:swap;src:url("../fonts/poppins-latin-400-normal.woff2") format("woff2")}
@font-face{font-family:"Poppins";font-style:normal;font-weight:500;font-display:swap;src:url("../fonts/poppins-latin-500-normal.woff2") format("woff2")}
@font-face{font-family:"Poppins";font-style:normal;font-weight:600;font-display:swap;src:url("../fonts/poppins-latin-600-normal.woff2") format("woff2")}
@font-face{font-family:"Poppins";font-style:normal;font-weight:700;font-display:swap;src:url("../fonts/poppins-latin-700-normal.woff2") format("woff2")}
@font-face{font-family:"Poppins";font-style:normal;font-weight:800;font-display:swap;src:url("../fonts/poppins-latin-800-normal.woff2") format("woff2")}

:root{
  --primary:#155EEF; --primary-hover:#0D47C2; --primary-soft:#E9F0FE; --primary-line:rgba(21,94,239,.09);
  --secondary:#12343F; --secondary-2:#1A4755; --secondary-ink:#0A1F26;
  --accent:#FFC72C; --accent-hover:#EDB300; --accent-soft:#FFF8E0;
  --teal:#1FA38C; --teal-soft:#E4F6F2;
  --bg:#F8FAFC; --heading:#101828; --body:#475467; --surface:#FFFFFF; --border:#D0D5DD; --line:#E6EAF0;
  --success:#067647; --success-soft:#ECFDF3; --warning:#B54708; --warning-soft:#FFFAEB; --danger:#B42318; --danger-soft:#FEF3F2;
  --container:1140px; --header-h:74px;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 20px);-webkit-text-size-adjust:100%}
body{margin:0;font-family:"Poppins",system-ui,sans-serif;font-size:16px;line-height:1.75;color:var(--body);background:var(--bg);overflow-x:clip}
body::before{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;background-image:linear-gradient(var(--primary-line) 1px,transparent 1px),linear-gradient(90deg,var(--primary-line) 1px,transparent 1px);background-size:56px 56px}
img,svg{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-underline-offset:3px}
a:hover{color:var(--primary-hover)}
h1,h2,h3,h4{color:var(--heading);margin:0 0 14px;line-height:1.18;letter-spacing:-.02em}
h1{font-size:32px;font-weight:800}
h2{font-size:40px;font-weight:700}
h3{font-size:20px;font-weight:600;letter-spacing:-.01em}
p{margin:0 0 16px}
ul,ol{margin:0 0 16px;padding-left:22px}
li{margin-bottom:6px}
strong{color:var(--heading);font-weight:600}
code,kbd{font-family:var(--mono);font-size:14px;background:var(--primary-soft);color:var(--secondary);padding:2px 6px;border-radius:4px}
:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
::selection{background:var(--accent);color:var(--heading)}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.skip-link{position:absolute;left:12px;top:-80px;z-index:400;background:var(--heading);color:#fff;padding:10px 16px;font-weight:600;text-decoration:none}
.skip-link:focus{top:12px;color:#fff}
.mono{font-family:var(--mono)}

/* ---------- Header: ruler bar ---------- */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.site-header::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:6px;background:repeating-linear-gradient(90deg,var(--border) 0 1px,transparent 1px 12px);opacity:.7;pointer-events:none;-webkit-mask:linear-gradient(90deg,transparent,#000 15%,#000 85%,transparent);mask:linear-gradient(90deg,transparent,#000 15%,#000 85%,transparent)}
.head-row{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:var(--header-h)}
.brand{display:inline-flex;align-items:center;gap:12px;text-decoration:none;color:var(--heading);font-weight:800;font-size:22px;letter-spacing:-.03em}
.brand img{width:42px;height:42px;border-radius:50%;transition:transform .6s cubic-bezier(.3,1.4,.5,1)}
.brand:hover img{transform:rotate(360deg)}
.brand b{color:var(--primary);font-weight:800}
.brand:hover{color:var(--heading)}
.nav ul{list-style:none;margin:0;padding:0;display:flex;align-items:center}
.nav li{margin:0;display:flex;align-items:center}
.nav li+li::before{content:"/";color:var(--border);margin:0 2px}
.nav a{position:relative;display:block;padding:8px 12px;font-size:15px;font-weight:500;color:var(--heading);text-decoration:none}
.nav a::before,.nav a::after{position:absolute;top:50%;transform:translateY(-50%);font-family:var(--mono);color:var(--primary);opacity:0;transition:opacity .2s,left .25s,right .25s}
.nav a::before{content:"[";left:6px}
.nav a::after{content:"]";right:6px}
.nav a:hover,.nav a[aria-current="page"]{color:var(--primary)}
.nav a:hover::before,.nav a[aria-current="page"]::before{opacity:1;left:0}
.nav a:hover::after,.nav a[aria-current="page"]::after{opacity:1;right:0}
.menu-btn{display:none;align-items:center;gap:8px;height:44px;padding:0 14px;border:1.5px solid var(--heading);background:transparent;font:600 14px "Poppins",sans-serif;color:var(--heading);cursor:pointer}
.menu-btn i{position:relative;display:block;width:16px;height:2px;background:currentColor;transition:background .2s}
.menu-btn i::before,.menu-btn i::after{content:"";position:absolute;left:0;width:16px;height:2px;background:currentColor;transition:transform .25s,top .25s}
.menu-btn i::before{top:-5px}.menu-btn i::after{top:5px}
.menu-btn[aria-expanded="true"] i{background:transparent}
.menu-btn[aria-expanded="true"] i::before{top:0;transform:rotate(45deg)}
.menu-btn[aria-expanded="true"] i::after{top:0;transform:rotate(-45deg)}
.progress{position:absolute;left:0;bottom:-1px;height:2px;width:0;background:var(--primary);z-index:2}

/* ---------- Buttons: hard-edged ---------- */
.btn{position:relative;display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:54px;padding:12px 26px;font:600 16px/1.2 "Poppins",sans-serif;text-decoration:none;border:2px solid var(--heading);cursor:pointer;transition:transform .18s,box-shadow .18s,background .2s,color .2s}
.btn svg{width:20px;height:20px;flex-shrink:0}
.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff;box-shadow:5px 5px 0 var(--heading)}
.btn-primary:hover{color:#fff;transform:translate(-2px,-2px);box-shadow:7px 7px 0 var(--heading)}
.btn-primary:active{transform:translate(3px,3px);box-shadow:2px 2px 0 var(--heading)}
.btn-line{background:var(--surface);color:var(--heading)}
.btn-line:hover{background:var(--heading);color:#fff}
.btn-accent{background:var(--accent);border-color:var(--heading);color:var(--heading);box-shadow:5px 5px 0 #000}
.btn-accent:hover{color:var(--heading);transform:translate(-2px,-2px);box-shadow:7px 7px 0 #000}
.btn-lg{min-height:60px;padding:14px 32px;font-size:17px}
.dl-note{font-size:13px;margin:12px 0 0}
.dl-status{display:block;min-height:20px;margin-top:6px;font-size:14px;font-weight:500;color:var(--success)}

/* ---------- Section frame ---------- */
.sec{padding:104px 0;position:relative}
.sec-white{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.tag{display:inline-flex;align-items:center;gap:10px;font-family:var(--mono);font-size:13px;font-weight:600;color:var(--primary);text-transform:uppercase;letter-spacing:.1em;margin-bottom:16px}
.tag span{display:inline-grid;place-items:center;width:30px;height:30px;border:1.5px solid var(--primary);font-size:12px}
.title-row{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:56px;align-items:end;margin-bottom:56px;padding-bottom:28px;border-bottom:1px dashed var(--border)}
.title-row h2{margin:0}
.title-row p{margin:0;font-size:17px}
.title-stack{max-width:720px;margin-bottom:48px}
.title-stack p{font-size:17px;margin:0}

/* ---------- Hero: diagonal split ---------- */
.hero{position:relative;overflow:hidden;background:var(--bg)}
.hero::before{content:"";position:absolute;top:0;right:0;bottom:0;width:52%;background:var(--secondary);clip-path:polygon(18% 0,100% 0,100% 100%,0 100%);z-index:0}
.hero::after{content:"";position:absolute;top:0;right:0;bottom:0;width:52%;clip-path:polygon(18% 0,100% 0,100% 100%,0 100%);background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);background-size:28px 28px;animation:gridPan 18s linear infinite;z-index:0}
@keyframes gridPan{to{background-position:28px 28px}}
.hero-in{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:48px;align-items:center;min-height:600px;padding:64px 0 72px}
.badge-line{display:inline-flex;align-items:center;gap:10px;font-family:var(--mono);font-size:13px;color:var(--secondary);border:1.5px solid var(--secondary);padding:6px 12px;margin-bottom:24px;background:var(--surface)}
.badge-line .dot{width:8px;height:8px;background:var(--teal);animation:blinkSq 1.6s steps(1) infinite}
@keyframes blinkSq{50%{opacity:.2}}
.hero h1{font-size:54px;line-height:1.08;margin-bottom:22px}
.hero h1 .box{position:relative;display:inline-block;padding:0 10px;color:var(--heading);z-index:0}
.hero h1 .box::before{content:"";position:absolute;inset:6px 0 4px;background:var(--accent);z-index:-1;transform-origin:left;animation:boxIn .9s .3s cubic-bezier(.2,.8,.2,1) both}
@keyframes boxIn{from{transform:scaleX(0)}to{transform:scaleX(1)}}
.hero-copy p{font-size:18px;max-width:560px}
.cta-row{display:flex;flex-wrap:wrap;gap:18px;margin:30px 0 8px}
.spec-ribbon{background:var(--surface);display:flex;flex-wrap:wrap;margin:26px 0 0;padding:0;list-style:none;border-top:1.5px solid var(--heading);border-bottom:1.5px solid var(--heading);max-width:520px}
.spec-ribbon li{flex:1 1 auto;margin:0;padding:10px 14px;border-right:1px solid var(--border)}
.spec-ribbon li:last-child{border-right:0}
.spec-ribbon b{display:block;font-family:var(--mono);font-size:11px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--body)}
.spec-ribbon span{font-weight:700;color:var(--heading);font-size:15px}
.schematic{position:relative;color:#CFE2E7}
.schematic svg{width:100%;height:auto;overflow:visible}
.schematic .node rect{fill:#0E2A33;stroke:#3C6A78;stroke-width:1.5}
.schematic .node.zy rect{fill:#155EEF;stroke:#8FB2FB}
.schematic .node.zn rect{fill:var(--accent);stroke:#fff}
.schematic .node.zn text{fill:#101828}
.schematic text{font-family:"Poppins",sans-serif;font-size:13px;fill:#E4EEF1;font-weight:600}
.schematic text.sm{font-size:10.5px;font-weight:500;fill:#9FC0C9;font-family:ui-monospace,Menlo,monospace}
.schematic .wire{fill:none;stroke:#3C6A78;stroke-width:1.6}
.schematic .flow{fill:none;stroke:var(--accent);stroke-width:2;stroke-dasharray:6 10;animation:flow 1.2s linear infinite}
.schematic .flow.b{stroke:#8FB2FB;animation-duration:1.6s}
@keyframes flow{to{stroke-dashoffset:-32}}
.schematic .pulse{fill:var(--accent);animation:pulse 2s ease-out infinite;transform-origin:center;transform-box:fill-box}
@keyframes pulse{0%{opacity:1;transform:scale(1)}100%{opacity:0;transform:scale(2.6)}}
.schematic .app{animation:appIn .6s cubic-bezier(.3,1.5,.5,1) both}
.schematic .app:nth-of-type(2){animation-delay:.15s}.schematic .app:nth-of-type(3){animation-delay:.3s}.schematic .app:nth-of-type(4){animation-delay:.45s}
@keyframes appIn{from{opacity:0;transform:translateX(12px)}to{opacity:1;transform:none}}
.schem-cap{display:block;font-family:var(--mono);font-size:12px;color:#9FC0C9;margin-top:10px;text-align:right}

/* ---------- Features: numbered ledger ---------- */
.ledger{display:grid;grid-template-columns:1fr 1fr;border-top:1.5px solid var(--heading)}
.entry{position:relative;display:grid;grid-template-columns:86px minmax(0,1fr);gap:20px;padding:30px 28px 30px 0;border-bottom:1px solid var(--border);overflow:hidden;isolation:isolate}
.entry:nth-child(odd){padding-right:36px;border-right:1px solid var(--border)}
.entry:nth-child(even){padding-left:36px}
.entry::before{content:"";position:absolute;inset:0;background:var(--primary-soft);transform:scaleY(0);transform-origin:bottom;transition:transform .45s cubic-bezier(.2,.8,.2,1);z-index:-1}
.entry:hover::before{transform:scaleY(1)}
.entry .num{font-size:56px;font-weight:800;line-height:1;color:transparent;-webkit-text-stroke:1.5px var(--secondary);transition:color .35s,-webkit-text-stroke-color .35s}
.entry:hover .num{color:var(--primary);-webkit-text-stroke-color:var(--primary)}
.entry h3{display:flex;align-items:center;gap:10px;margin-bottom:8px}
.entry h3 svg{width:22px;height:22px;color:var(--primary);flex-shrink:0}
.entry p{margin:0;font-size:15px}
.entry .ver{display:inline-block;font-family:var(--mono);font-size:11px;padding:1px 6px;border:1px solid var(--border);color:var(--body);margin-top:10px}

/* ---------- Download: monolith ---------- */
.dl-layout{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:0;border:1.5px solid var(--heading);background:var(--surface)}
.mono-side{padding:40px;border-right:1.5px solid var(--heading);position:relative;overflow:hidden}
.bigver{font-size:150px;font-weight:800;line-height:.85;letter-spacing:-.06em;color:var(--heading);margin:0 0 18px;display:flex;align-items:flex-start;gap:10px}
.bigver small{font-size:14px;font-family:var(--mono);font-weight:600;letter-spacing:.06em;color:var(--teal);border:1.5px solid var(--teal);padding:3px 8px;margin-top:12px}
.facts-grid{display:grid;grid-template-columns:1fr 1fr;margin:0 0 26px;border-top:1px solid var(--line)}
.facts-grid div{padding:12px 0;border-bottom:1px solid var(--line)}
.facts-grid div:nth-child(odd){padding-right:16px}
.facts-grid dt{font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--body)}
.facts-grid dd{margin:0;font-weight:600;color:var(--heading);font-size:15px}
.file-side{background:var(--secondary-ink);color:#B8D0D7;padding:32px;display:flex;flex-direction:column}
.file-side h3{color:#fff;font-size:18px}
.file{font-family:var(--mono);font-size:13px;line-height:1.7;background:rgba(255,255,255,.05);border:1px dashed #3C6A78;padding:16px;margin-bottom:18px;word-break:break-all}
.file b{color:var(--accent);font-weight:600}
.roots{display:grid;gap:10px;margin:0 0 18px;padding:0;list-style:none}
.roots li{display:grid;grid-template-columns:110px 1fr;gap:10px;margin:0;padding:10px 12px;border:1px solid #2B5361;font-size:14px;transition:border-color .2s,background .2s}
.roots li:hover{border-color:var(--accent);background:rgba(255,199,44,.06)}
.roots b{color:#fff;font-weight:600}
.copy-sha{margin-top:8px;border:1px solid #3C6A78;background:transparent;color:#B8D0D7;font:600 12px "Poppins";padding:6px 10px;cursor:pointer;display:none}
.js .copy-sha{display:inline-block}
.copy-sha:hover{border-color:var(--accent);color:#fff}
.file-side .src{font-size:13px;margin-top:auto}
.file-side a{color:var(--accent)}

/* ---------- How to download: checklist ---------- */
.checklist{counter-reset:c;list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;border-left:1px solid var(--border);border-top:1px solid var(--border)}
.checklist li{position:relative;margin:0;padding:28px 26px 30px;border-right:1px solid var(--border);border-bottom:1px solid var(--border);background:var(--surface)}
.checklist .tick{width:42px;height:42px;margin-bottom:16px}
.checklist .tick circle{fill:none;stroke:var(--border);stroke-width:2}
.checklist .tick path{fill:none;stroke:var(--success);stroke-width:3;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:30;stroke-dashoffset:30;transition:stroke-dashoffset .6s ease}
.checklist.in .tick path,.no-js .checklist .tick path{stroke-dashoffset:0}
.checklist li:nth-child(2) .tick path{transition-delay:.15s}.checklist li:nth-child(3) .tick path{transition-delay:.3s}.checklist li:nth-child(4) .tick path{transition-delay:.45s}.checklist li:nth-child(5) .tick path{transition-delay:.6s}.checklist li:nth-child(6) .tick path{transition-delay:.75s}
.checklist h3{font-size:17px;margin-bottom:6px}
.checklist p{margin:0;font-size:15px}
.checklist .step{position:absolute;top:24px;right:22px;font-family:var(--mono);font-size:12px;color:var(--body)}

/* ---------- What it does: before/after ---------- */
.ba{display:grid;grid-template-columns:minmax(0,1fr) 70px minmax(0,1fr);align-items:stretch;margin-top:8px}
.ba-col{border:1.5px solid var(--heading);background:var(--surface);padding:28px}
.ba-col.after{background:var(--secondary);color:#C9DCE1;border-color:var(--secondary)}
.ba-col.after h3{color:#fff}
.ba-col h3{font-size:18px}
.ba-col .k{font-family:var(--mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--body);display:block;margin-bottom:8px}
.ba-col.after .k{color:var(--accent)}
.ba-col ul{list-style:none;padding:0;margin:0}
.ba-col li{position:relative;padding:8px 0 8px 26px;border-top:1px dashed var(--border);font-size:15px;margin:0}
.ba-col.after li{border-color:#2B5361}
.ba-col li::before{position:absolute;left:0;top:8px;font-weight:700}
.ba-col.before li::before{content:"✕";color:var(--danger)}
.ba-col.after li::before{content:"✓";color:var(--accent)}
.ba-arrow{display:grid;place-items:center}
.ba-arrow svg{width:46px;height:46px;color:var(--primary);animation:nudgeX 1.6s ease-in-out infinite}
@keyframes nudgeX{50%{transform:translateX(6px)}}
.what-text{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px;margin-bottom:48px}
.uses{list-style:none;padding:0;margin:0;counter-reset:u}
.uses li{counter-increment:u;position:relative;padding:14px 0 14px 46px;border-bottom:1px solid var(--line);margin:0}
.uses li::before{content:counter(u,upper-alpha);position:absolute;left:0;top:14px;width:30px;height:30px;display:grid;place-items:center;background:var(--heading);color:var(--accent);font-family:var(--mono);font-weight:700;font-size:13px}
.uses h3{font-size:16px;margin:0 0 2px}
.uses p{margin:0;font-size:15px}

/* ---------- Install rail ---------- */
.rail-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:28px}
.rail-ctrl{display:none;gap:8px}
.js .rail-ctrl{display:flex}
.rail-ctrl button{width:48px;height:48px;border:1.5px solid var(--heading);background:var(--surface);cursor:pointer;display:grid;place-items:center;transition:background .2s,color .2s}
.rail-ctrl button:hover{background:var(--heading);color:#fff}
.rail-ctrl svg{width:20px;height:20px}
.rail{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(300px,32%);gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding:4px 4px 22px;list-style:none;margin:0;scrollbar-width:thin;scrollbar-color:var(--primary) var(--line)}
.rail li{scroll-snap-align:start;margin:0;background:var(--surface);border:1.5px solid var(--heading);padding:26px;display:flex;flex-direction:column;position:relative;transition:transform .25s,box-shadow .25s}
.rail li:hover{transform:translate(-3px,-3px);box-shadow:6px 6px 0 var(--primary)}
.rail .n{font-family:var(--mono);font-size:13px;font-weight:700;color:var(--primary);margin-bottom:12px}
.rail h3{font-size:18px}
.rail p{font-size:15px;margin:0 0 12px}
.rail .who{margin-top:auto;display:flex;flex-wrap:wrap;gap:6px}
.rail .who span{font-family:var(--mono);font-size:11px;padding:2px 7px;background:var(--teal-soft);color:#0C6B5B}
.term{background:var(--secondary-ink);color:#D4E5EA;font-family:var(--mono);font-size:13px;padding:12px 14px;margin:0 0 12px;white-space:pre-wrap;word-break:break-word}

/* ---------- Tables ---------- */
.table-wrap{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;border:1.5px solid var(--heading);background:var(--surface)}
table{width:100%;border-collapse:collapse;font-size:15px;min-width:680px}
caption{caption-side:top;text-align:left;padding:14px 18px;font-family:var(--mono);font-size:13px;color:var(--body);border-bottom:1px solid var(--line)}
th,td{padding:14px 18px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}
thead th{background:var(--heading);color:#fff;font-size:13px;font-weight:600;letter-spacing:.03em}
tbody th{font-weight:600;color:var(--heading)}
tbody tr:last-child th,tbody tr:last-child td{border-bottom:0}
tbody tr{transition:background .2s}
tbody tr:hover{background:#F5F8FD}
.yes,.no,.maybe{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:14px;white-space:nowrap}
.yes{color:var(--success)}.no{color:var(--danger)}.maybe{color:var(--warning)}
.yes::before{content:"●"}.no::before{content:"○"}.maybe::before{content:"◆";font-size:10px}
.cmp td.zn,.cmp th.zn{background:var(--accent-soft);border-left:2px solid var(--heading);border-right:2px solid var(--heading)}
.cmp thead th.zn{background:var(--accent);color:var(--heading)}
.cmp tbody tr:last-child td.zn{border-bottom:2px solid var(--heading)}
.note-sm{font-size:13px;margin-top:14px}

/* ---------- Pros/cons: balance ---------- */
.balance{display:grid;grid-template-columns:minmax(0,1fr) 2px minmax(0,1fr);gap:0 44px}
.balance .rule{background:var(--heading);position:relative}
.balance .rule::before{content:"";position:absolute;left:50%;top:-14px;width:22px;height:22px;margin-left:-11px;background:var(--accent);border:2px solid var(--heading);transform:rotate(45deg)}
.side h3{display:flex;align-items:center;gap:12px;font-size:22px}
.side h3 span{display:grid;place-items:center;width:38px;height:38px;font-size:18px;font-weight:800}
.side.plus h3 span{background:var(--success-soft);color:var(--success);border:1.5px solid var(--success)}
.side.minus h3 span{background:var(--danger-soft);color:var(--danger);border:1.5px solid var(--danger)}
.side ol{list-style:none;padding:0;margin:0}
.side li{padding:14px 0;border-bottom:1px dashed var(--border);font-size:15px;margin:0}
.side li strong{display:block;font-size:16px}

/* ---------- Troubleshooting ---------- */
.issues{display:grid;gap:12px}
.issue{background:var(--surface);border:1.5px solid var(--heading);transition:box-shadow .25s}
.issue[open]{box-shadow:6px 6px 0 var(--primary)}
.issue summary{list-style:none;cursor:pointer;display:grid;grid-template-columns:80px minmax(0,1fr) 34px;align-items:center;gap:18px;padding:16px 20px;font-weight:600;color:var(--heading)}
.issue summary::-webkit-details-marker{display:none}
.issue .code{font-family:var(--mono);font-size:12px;font-weight:700;color:#fff;background:var(--danger);padding:4px 0;text-align:center}
.issue .chev{width:30px;height:30px;border:1.5px solid var(--heading);display:grid;place-items:center;transition:transform .3s,background .3s}
.issue .chev::before{content:"+";font-weight:700}
.issue[open] .chev{transform:rotate(45deg);background:var(--accent)}
.issue .body{display:grid;grid-template-columns:1fr 1fr;gap:0;border-top:1px dashed var(--border)}
.issue .body div{padding:16px 20px}
.issue .body div+div{border-left:1px dashed var(--border)}
.issue .body b{display:block;font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--body);margin-bottom:4px}
.issue .body p{margin:0;font-size:15px}
.best{margin-top:28px;display:grid;grid-template-columns:auto 1fr;gap:18px;align-items:start;padding:22px 24px;background:var(--accent-soft);border-left:6px solid var(--accent)}
.best svg{width:26px;height:26px;color:var(--warning)}
.best p{margin:0;color:#4A3900}

/* ---------- Perspectives: strips ---------- */
.strips{border-top:1.5px solid var(--heading)}
.strip{display:grid;grid-template-columns:200px minmax(0,1fr) 240px;gap:32px;align-items:start;padding:28px 0;border-bottom:1px solid var(--border);transition:padding .3s,background .3s}
.strip:hover{background:var(--surface);padding-left:16px;padding-right:16px}
.strip .who{font-family:var(--mono);font-size:12px;font-weight:600;letter-spacing:.06em;color:var(--primary);text-transform:uppercase}
.strip h3{font-size:19px;margin-bottom:6px}
.strip p{margin:0;font-size:15px}
.strip .verdict{font-size:14px;padding-left:18px;border-left:3px solid var(--accent)}

/* ---------- FAQ: two groups ---------- */
.faq-cols{display:grid;grid-template-columns:1fr 1fr;gap:48px}
.faq-cols h3{font-family:var(--mono);font-size:13px;letter-spacing:.1em;text-transform:uppercase;color:var(--body);padding-bottom:12px;border-bottom:1.5px solid var(--heading)}
.qa{border-bottom:1px solid var(--border)}
.qa summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;gap:16px;padding:18px 0;font-weight:600;color:var(--heading);transition:color .2s}
.qa summary::-webkit-details-marker{display:none}
.qa summary::after{content:"↓";font-family:var(--mono);color:var(--primary);transition:transform .3s;flex-shrink:0}
.qa[open] summary::after{transform:rotate(180deg)}
.qa summary:hover{color:var(--primary)}
.qa .a{padding:0 0 18px;font-size:15px}
.qa .a p{margin:0}

/* ---------- Final band ---------- */
.final{position:relative;background:var(--secondary);color:#C9DCE1;padding:96px 0;overflow:hidden;clip-path:polygon(0 6%,100% 0,100% 94%,0 100%);margin:40px 0}
.final::before{content:"";position:absolute;inset:-40px;background-image:linear-gradient(rgba(255,255,255,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.07) 1px,transparent 1px);background-size:36px 36px;animation:gridPan2 14s linear infinite}
@keyframes gridPan2{to{transform:translate(36px,36px)}}
.final .container{position:relative;display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr);gap:48px;align-items:center}
.final h2{color:#fff;font-size:44px}
.final p{font-size:17px}
.final .chips{display:flex;flex-wrap:wrap;gap:8px;list-style:none;padding:0;margin:0}
.final .chips li{margin:0;font-family:var(--mono);font-size:12px;padding:5px 10px;border:1px solid #3C6A78;color:#E4EEF1}
.final-act{text-align:left}
.final .dl-note,.final .dl-status{color:#B8D0D7}
.final-logo{width:120px;height:120px;margin-bottom:22px;animation:spinSlow 20s linear infinite}
@keyframes spinSlow{to{transform:rotate(360deg)}}

/* ---------- Footer: light + giant wordmark ---------- */
.site-footer{background:var(--surface);border-top:1.5px solid var(--heading);position:relative;overflow:hidden}
.foot-grid{display:grid;grid-template-columns:minmax(0,1.4fr) repeat(3,minmax(0,.7fr));gap:40px;padding:64px 0 40px}
.foot-grid .brand{margin-bottom:16px}
.foot-grid p{font-size:15px;margin:0}
.foot-grid h2{font-family:var(--mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--body);margin-bottom:14px}
.foot-grid ul{list-style:none;padding:0;margin:0}
.foot-grid li{margin-bottom:9px}
.foot-grid a{color:var(--heading);text-decoration:none;font-size:15px;transition:color .2s,padding .2s}
.foot-grid a:hover{color:var(--primary);padding-left:6px}
.disclose{border-top:1px dashed var(--border);padding:18px 0;font-size:14px}
.disclose p{margin:0}
.wordmark{font-size:170px;font-weight:800;letter-spacing:-.06em;line-height:.8;color:transparent;-webkit-text-stroke:1.5px var(--border);white-space:nowrap;text-align:center;margin:10px 0 -18px;user-select:none;transition:-webkit-text-stroke-color .4s}
.site-footer:hover .wordmark{-webkit-text-stroke-color:var(--primary)}
.copyright{position:relative;background:var(--heading);color:#C9D1DC;text-align:center;padding:18px 0;font-size:14px}
.copyright a{color:#fff;font-weight:600;text-decoration:none}
.copyright a:hover{color:var(--accent)}

/* ---------- Inner pages ---------- */
.page-top{padding:60px 0 40px;border-bottom:1.5px solid var(--heading);background:var(--surface);position:relative;overflow:hidden}
.page-top::after{content:"";position:absolute;right:0;top:0;bottom:0;width:30%;background:var(--secondary);clip-path:polygon(40% 0,100% 0,100% 100%,0 100%);opacity:.96}
.page-top::before{content:"";position:absolute;right:0;top:0;bottom:0;width:30%;z-index:1;clip-path:polygon(40% 0,100% 0,100% 100%,0 100%);background-image:linear-gradient(rgba(255,255,255,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.07) 1px,transparent 1px);background-size:24px 24px;animation:gridPan 18s linear infinite}
.page-top .container{position:relative;z-index:2}
.page-top h1{font-size:44px;max-width:820px}
.page-top .lead{font-size:18px;max-width:700px;margin:0}
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:4px;padding:0;margin:0 0 16px;font-family:var(--mono);font-size:13px}
.crumbs li{margin:0;display:flex;gap:4px}
.crumbs li+li::before{content:"/";color:var(--border)}
.crumbs a{color:var(--body);text-decoration:none}
.crumbs a:hover{color:var(--primary)}
.crumbs [aria-current]{color:var(--primary);font-weight:600}
.meta{display:flex;flex-wrap:wrap;gap:0;margin:22px 0 0;padding:0;list-style:none;border:1px solid var(--border);width:max-content;max-width:100%}
.meta li{margin:0;padding:6px 12px;font-family:var(--mono);font-size:12px;border-right:1px solid var(--border)}
.meta li:last-child{border-right:0}
.page-body{padding:56px 0 96px}
.reader{max-width:760px;margin:0 auto}
.reader h2{font-size:28px;margin-top:48px;padding-top:12px;border-top:1px dashed var(--border)}
.reader h3{font-size:20px;margin-top:28px}
.reader li{margin-bottom:8px}
.reader blockquote{margin:24px 0;padding:18px 22px;background:var(--accent-soft);border-left:6px solid var(--accent);color:#4A3900}
.reader .table-wrap{margin:22px 0}
.reader pre{background:var(--secondary-ink);color:#D4E5EA;font-family:var(--mono);font-size:13.5px;line-height:1.75;padding:18px 20px;overflow-x:auto;margin:18px 0}
.reader pre code{background:none;color:inherit;padding:0}
.toc-box{border:1.5px solid var(--heading);background:var(--surface);margin:0 0 36px}
.toc-box summary{list-style:none;cursor:pointer;padding:14px 18px;font-family:var(--mono);font-size:13px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;display:flex;justify-content:space-between}
.toc-box summary::-webkit-details-marker{display:none}
.toc-box summary::after{content:"+";font-size:18px}
.toc-box[open] summary::after{content:"−"}
.toc-box ol{margin:0;padding:0 18px 16px 40px;font-size:15px}
.toc-box a{color:var(--heading);text-decoration:none}
.toc-box a:hover{color:var(--primary)}
.cover{margin:0 0 32px;border:1.5px solid var(--heading)}
.cover img{width:100%}
.inline-dl{margin:44px 0;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:24px;align-items:center;padding:28px;border:1.5px solid var(--heading);background:var(--surface);box-shadow:8px 8px 0 var(--primary)}
.inline-dl h2{border:0;margin:0 0 4px;padding:0;font-size:22px}
.inline-dl p{margin:0;font-size:15px}
.more{margin-top:40px}
.more h2{font-size:22px}
.more ol{list-style:none;padding:0;margin:0;border-top:1.5px solid var(--heading)}
.more li{margin:0;border-bottom:1px solid var(--border)}
.more a{display:flex;justify-content:space-between;gap:16px;padding:14px 4px;color:var(--heading);text-decoration:none;font-weight:600;transition:padding .25s,color .2s}
.more a::after{content:"→";color:var(--primary)}
.more a:hover{padding-left:12px;color:var(--primary)}

/* Guides index: book contents */
.contents{list-style:none;margin:0;padding:0;border-top:1.5px solid var(--heading)}
.contents li{margin:0;border-bottom:1px solid var(--border)}
.contents a{display:grid;grid-template-columns:90px 220px minmax(0,1fr) 40px;gap:28px;align-items:center;padding:22px 8px;text-decoration:none;color:var(--body);transition:background .3s,padding .3s}
.contents a:hover{background:var(--surface);padding-left:20px}
.contents .idx{font-family:var(--mono);font-size:40px;font-weight:700;line-height:1;color:var(--border);transition:color .3s}
.contents a:hover .idx{color:var(--primary)}
.contents img{width:100%;aspect-ratio:16/9;object-fit:cover;border:1.5px solid var(--heading)}
.contents h2{font-size:21px;margin:0 0 6px;color:var(--heading)}
.contents p{margin:0 0 6px;font-size:15px}
.contents .rt{font-family:var(--mono);font-size:12px;color:var(--primary)}
.contents .go{width:40px;height:40px;border:1.5px solid var(--heading);display:grid;place-items:center;transition:background .25s,color .25s}
.contents a:hover .go{background:var(--heading);color:#fff}
.contents .go svg{width:18px;height:18px}

.cols3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;border:1.5px solid var(--heading);margin:28px 0}
.cols3 div{padding:22px;background:var(--surface)}
.cols3 div+div{border-left:1px solid var(--border)}
.cols3 h2{font-size:17px;border:0;margin:0 0 6px;padding:0}
.cols3 p{margin:0;font-size:15px}
.mail{font-family:var(--mono);font-size:16px;background:var(--accent-soft);padding:6px 12px;border:1px dashed var(--accent-hover);user-select:all;display:inline-block;color:var(--heading)}
.smap{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:32px}
.smap h2{font-size:20px;border:0;margin-top:0;padding:0}
.nf{padding:100px 0;text-align:center}
.nf .big{font-size:160px;font-weight:800;line-height:.9;letter-spacing:-.06em;color:transparent;-webkit-text-stroke:2px var(--heading);margin-bottom:14px}
.nf .cta-row{justify-content:center}

/* ---------- Reveal ---------- */
.js [data-up]{opacity:0;transform:translateY(30px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.7,.2,1)}
.js [data-up].in{opacity:1;transform:none}
.js [data-clip]{clip-path:inset(0 100% 0 0);transition:clip-path 1s cubic-bezier(.7,0,.2,1)}
.js [data-clip].in{clip-path:inset(0 0 0 0)}
.js [data-seq] > *{opacity:0;transform:translateY(20px);transition:opacity .55s ease,transform .55s cubic-bezier(.2,.7,.2,1)}
.js [data-seq].in > *{opacity:1;transform:none}
.js [data-seq].in > *:nth-child(2){transition-delay:.06s}.js [data-seq].in > *:nth-child(3){transition-delay:.12s}.js [data-seq].in > *:nth-child(4){transition-delay:.18s}.js [data-seq].in > *:nth-child(5){transition-delay:.24s}.js [data-seq].in > *:nth-child(6){transition-delay:.3s}.js [data-seq].in > *:nth-child(7){transition-delay:.36s}.js [data-seq].in > *:nth-child(8){transition-delay:.42s}.js [data-seq].in > *:nth-child(n+9){transition-delay:.48s}

/* ---------- Responsive ---------- */
@media (max-width:1080px){
  h1,.hero h1{font-size:46px}
  h2{font-size:34px}
  .bigver{font-size:118px}
  .wordmark{font-size:120px}
  .contents a{grid-template-columns:70px 180px minmax(0,1fr) 40px;gap:20px}
}
@media (max-width:960px){
  :root{--header-h:66px}
  .menu-btn{display:inline-flex}
  .nav{position:fixed;top:0;right:0;bottom:0;width:min(340px,86vw);background:var(--surface);border-left:1.5px solid var(--heading);clip-path:inset(0 0 0 100%);transition:clip-path .4s cubic-bezier(.2,.8,.2,1),visibility .4s;padding:84px 26px 26px;z-index:150;visibility:hidden;overflow-y:auto}
  .nav.open{clip-path:inset(0 0 0 0);visibility:visible}
  .no-js .nav{position:static;clip-path:none;visibility:visible;width:auto;border:0;padding:0 0 12px}
  .nav ul{flex-direction:column;align-items:stretch}
  .nav li{display:block}
  .nav li+li::before{display:none}
  .nav a{padding:14px 4px;font-size:18px;border-bottom:1px dashed var(--border)}
  .menu-btn{position:relative;z-index:160}
  .hero::before,.hero::after{width:100%;top:auto;height:52%;clip-path:polygon(0 12%,100% 0,100% 100%,0 100%)}
  .hero-in{grid-template-columns:minmax(0,1fr);gap:40px;min-height:0;padding:48px 0 56px}
  .title-row,.what-text,.final .container{grid-template-columns:minmax(0,1fr);gap:20px}
  .ledger{grid-template-columns:minmax(0,1fr)}
  .entry:nth-child(odd){border-right:0;padding-right:0}
  .entry:nth-child(even){padding-left:0}
  .dl-layout{grid-template-columns:minmax(0,1fr)}
  .mono-side{border-right:0;border-bottom:1.5px solid var(--heading)}
  .checklist{grid-template-columns:repeat(2,minmax(0,1fr))}
  .ba{grid-template-columns:minmax(0,1fr)}
  .ba-arrow{padding:14px 0}
  .ba-arrow svg{transform:rotate(90deg);animation:none}
  .rail{grid-auto-columns:minmax(270px,70%)}
  .balance{grid-template-columns:minmax(0,1fr);gap:28px}
  .balance .rule{height:2px}
  .balance .rule::before{top:-11px}
  .strip{grid-template-columns:minmax(0,1fr);gap:8px}
  .faq-cols{grid-template-columns:minmax(0,1fr);gap:28px}
  .foot-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .foot-grid > div:first-child{grid-column:1 / -1}
  .contents a{grid-template-columns:60px minmax(0,1fr) 40px}
  .contents img{display:none}
  .page-top::after,.page-top::before{width:22%}
}
@media (max-width:720px){
  .sec{padding:72px 0}
  h1,.hero h1{font-size:36px}
  h2{font-size:29px}
  .page-top h1{font-size:31px}
  .final h2{font-size:31px}
  .bigver{font-size:88px}
  .mono-side,.file-side{padding:24px}
  .facts-grid{grid-template-columns:minmax(0,1fr)}
  .checklist{grid-template-columns:minmax(0,1fr)}
  .issue summary{grid-template-columns:64px minmax(0,1fr) 30px;gap:12px;padding:14px}
  .issue .body{grid-template-columns:minmax(0,1fr)}
  .issue .body div+div{border-left:0;border-top:1px dashed var(--border)}
  .wordmark{font-size:64px}
  .foot-grid{grid-template-columns:minmax(0,1fr)}
  .cols3,.smap{grid-template-columns:minmax(0,1fr)}
  .cols3 div+div{border-left:0;border-top:1px solid var(--border)}
  .inline-dl{grid-template-columns:minmax(0,1fr)}
  .roots li{grid-template-columns:minmax(0,1fr)}
  .spec-ribbon li{flex-basis:50%}
  .entry{grid-template-columns:60px minmax(0,1fr);gap:14px}
  .entry .num{font-size:42px}
  .final{clip-path:polygon(0 3%,100% 0,100% 97%,0 100%)}
  .page-top::after,.page-top::before{display:none}
  .nf .big{font-size:110px}
}
@media (max-width:400px){
  .container{padding:0 16px}
  h1,.hero h1{font-size:31px}
  .cta-row .btn{width:100%}
  .bigver{font-size:72px}
  .brand{font-size:19px}
  .brand img{width:36px;height:36px}
  .rail{grid-auto-columns:minmax(250px,86%)}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  .js [data-up],.js [data-seq] > *{opacity:1!important;transform:none!important}
  .js [data-clip]{clip-path:none!important}
  .checklist .tick path{stroke-dashoffset:0!important}
}
@media print{.site-header,.final,.site-footer{display:none}}
.schematic text.dk{fill:#3b3b3b}.schematic text.lt{fill:#E4EEF1}.schematic text.yl{fill:#FFC72C}
.reader p code,.reader li code{overflow-wrap:anywhere}

.final .tag{color:var(--accent)}.final .tag span{border-color:var(--accent)}

.page-top h1{animation:clipIn 1s cubic-bezier(.7,0,.2,1) both}
@keyframes clipIn{from{clip-path:inset(0 100% 0 0)}to{clip-path:inset(0 0 0 0)}}
@media (max-width:960px){.hero::before,.hero::after{height:44%}}