/* Vida Carbon Guide: "registry ledger" theme */
@font-face{font-family:"Vollkorn";src:url(/assets/fonts/vollkorn-latin-600-normal.woff2) format("woff2");font-weight:600;font-style:normal;font-display:swap}
@font-face{font-family:"Vollkorn";src:url(/assets/fonts/vollkorn-latin-700-normal.woff2) format("woff2");font-weight:700;font-style:normal;font-display:swap}
@font-face{font-family:"Vollkorn";src:url(/assets/fonts/vollkorn-latin-600-italic.woff2) format("woff2");font-weight:600;font-style:italic;font-display:swap}
@font-face{font-family:"Kumbh Sans";src:url(/assets/fonts/kumbh-sans-latin-400-normal.woff2) format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"Kumbh Sans";src:url(/assets/fonts/kumbh-sans-latin-600-normal.woff2) format("woff2");font-weight:600;font-display:swap}
@font-face{font-family:"Kumbh Sans";src:url(/assets/fonts/kumbh-sans-latin-700-normal.woff2) format("woff2");font-weight:700;font-display:swap}
@font-face{font-family:"Fragment Mono";src:url(/assets/fonts/fragment-mono-latin-400-normal.woff2) format("woff2");font-weight:400;font-display:swap}

:root{
  --paper:#f3efe4;--sheet:#fbf9f3;--ink:#1f2620;--muted:#4f574d;--rule:#d9d1bd;--rule-strong:#b9ae93;
  --moss:#2f5d3a;--moss-ink:#f2f0e6;--rust:#9b3b1c;--ochre:#e8c766;--ochre-soft:#f6ebc6;
  --red-bg:#f7e1d8;--amber-bg:#f6ecd0;--green-bg:#dfeadb;--margin:#c98d77;
  --serif:"Vollkorn",Georgia,"Times New Roman",serif;--sans:"Kumbh Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"Fragment Mono",ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  --rail:248px;
}
@media (prefers-color-scheme:dark){:root{
  --paper:#111511;--sheet:#171c18;--ink:#e9e7dd;--muted:#adb3a5;--rule:#2f382f;--rule-strong:#475146;
  --moss:#8cc497;--moss-ink:#0f1a12;--rust:#f19a7d;--ochre:#e3c56f;--ochre-soft:#2d2818;
  --red-bg:#3a201a;--amber-bg:#33291a;--green-bg:#1d2e21;--margin:#6e3f31;
}}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:16px}
body{margin:0;background:var(--paper);color:var(--ink);font:400 1.0625rem/1.65 var(--sans);overflow-x:hidden}
a{color:var(--moss);text-underline-offset:.18em;text-decoration-thickness:1px}
a:hover{text-decoration-thickness:2px}
:focus-visible{outline:3px solid var(--ochre);outline-offset:2px;border-radius:2px}
img,svg{max-width:100%;height:auto}
.skip{position:absolute;left:-9999px;top:8px;background:var(--ink);color:var(--paper);padding:8px 14px;z-index:10}
.skip:focus{left:8px}

/* frame: fixed left rail + sheet */
.frame{display:grid;grid-template-columns:var(--rail) minmax(0,1fr);min-height:100vh}
.rail{position:sticky;top:0;height:100vh;padding:28px 22px;border-right:1px solid var(--rule-strong);display:flex;flex-direction:column;gap:28px;background:var(--paper)}
.mark{display:flex;align-items:center;gap:12px;color:var(--ink);text-decoration:none}
.mark-ico{color:var(--moss);flex:none}
.mark-txt{font:700 1.25rem/1.05 var(--serif);display:flex;flex-direction:column}
.mark-txt b{font:400 .78rem/1.4 var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.rail-nav{display:flex;flex-direction:column;border-top:1px solid var(--rule)}
.rail-nav a{display:flex;gap:12px;align-items:baseline;padding:10px 4px;border-bottom:1px solid var(--rule);color:var(--ink);text-decoration:none;font-weight:600}
.rail-nav a .n{font:400 .78rem var(--mono);color:var(--muted)}
.rail-nav a:hover{background:var(--sheet)}
.rail-nav a[aria-current="page"]{color:var(--moss);box-shadow:inset 3px 0 0 var(--moss);padding-left:12px}
.rail-note{margin-top:auto;font-size:.82rem;line-height:1.5;color:var(--muted);border-left:2px solid var(--ochre);padding-left:10px}

.sheet{min-width:0;display:flex;flex-direction:column}
main{flex:1;padding:44px clamp(16px,5vw,72px) 64px;background:var(--sheet);
  background-image:linear-gradient(to right,transparent 0,transparent 30px,var(--margin) 30px,var(--margin) 31px,transparent 31px)}
.col{max-width:46rem}

.crumbs{list-style:none;margin:0 0 22px;padding:0;display:flex;flex-wrap:wrap;gap:4px 0;font:400 .8rem var(--mono);color:var(--muted)}
.crumbs li+li::before{content:"/";margin:0 8px;color:var(--rule-strong)}
.crumbs a{color:var(--muted)}
.kicker{font:400 .8rem/1.4 var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--rust);margin:0 0 10px}
h1,h2,h3{font-family:var(--serif);font-weight:700;line-height:1.15;letter-spacing:-.005em}
.pg-h1,.art-h1{font-size:clamp(2rem,4.4vw,3rem);margin:0 0 16px;max-width:22ch}
.lede{font-size:1.18rem;color:var(--muted);margin:0 0 24px;max-width:40rem}
.stamp{border:2px solid var(--rust);color:var(--rust);padding:12px 16px;font-weight:600;max-width:40rem;transform:rotate(-.4deg);background:transparent}

/* article */
.ledger{display:flex;flex-wrap:wrap;margin:0 0 32px;border-top:1px solid var(--rule-strong);border-bottom:1px solid var(--rule-strong)}
.ledger div{padding:10px 18px 10px 0;margin-right:18px;border-right:1px solid var(--rule)}
.ledger div:last-child{border-right:0}
.ledger dt{font:400 .72rem var(--mono);text-transform:uppercase;letter-spacing:.12em;color:var(--muted)}
.ledger dd{margin:0;font-weight:600;font-size:.95rem}
.art-grid{display:grid;grid-template-columns:minmax(0,46rem) 220px;gap:48px;align-items:start}
.art-grid .toc{order:2;position:sticky;top:24px}
.toc-h{font:400 .75rem var(--mono);text-transform:uppercase;letter-spacing:.12em;color:var(--muted);margin:0 0 8px}
.toc ol{margin:0;padding:0;list-style:none;counter-reset:t;border-left:1px solid var(--rule-strong)}
.toc li{counter-increment:t;padding:4px 0 4px 12px;font-size:.88rem;line-height:1.35}
.toc li::before{content:counter(t,decimal-leading-zero) " ";font:400 .72rem var(--mono);color:var(--muted)}
.toc a{color:var(--ink);text-decoration:none}
.toc a:hover{color:var(--moss);text-decoration:underline}

.prose{max-width:46rem;min-width:0}
.prose h2{font-size:1.65rem;margin:2.2em 0 .5em;padding-top:.6em;border-top:1px dashed var(--rule-strong)}
.prose h3{font-size:1.25rem;margin:1.6em 0 .4em}
.prose p,.prose ul,.prose ol{margin:0 0 1.05em}
.prose li{margin-bottom:.35em}
.prose blockquote{margin:1.4em 0;padding:4px 0 4px 18px;border-left:3px solid var(--ochre);font-family:var(--serif);font-style:italic;font-size:1.15rem}
.prose strong{font-weight:700}
.prose .note{background:var(--ochre-soft);border-left:4px solid var(--ochre);padding:14px 18px;margin:1.4em 0}
.table-wrap{overflow-x:auto;margin:1.4em 0;border:1px solid var(--rule-strong)}
table{border-collapse:collapse;width:100%;font-size:.95rem}
th,td{text-align:left;padding:9px 12px;border-bottom:1px solid var(--rule);vertical-align:top}
th{font:400 .78rem var(--mono);text-transform:uppercase;letter-spacing:.08em;background:var(--paper)}
tr:last-child td{border-bottom:0}
.disc-inline{font-size:.88rem;color:var(--muted);border-top:1px solid var(--rule);padding-top:12px;margin-top:2.4em}

.faq details{border-bottom:1px solid var(--rule)}
.faq details:first-child{border-top:1px solid var(--rule)}
.faq summary{cursor:pointer;padding:14px 4px;font-weight:600;list-style:none;display:flex;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{content:"+";font:400 1rem var(--mono);color:var(--rust);width:1ch}
.faq details[open] summary::before{content:"−"}
.faq details p{margin:0 0 16px 28px;color:var(--muted)}

.more{margin-top:48px}
.next{display:block;border:1px solid var(--rule-strong);padding:18px 20px;text-decoration:none;color:var(--ink);background:var(--paper)}
.next:hover{border-color:var(--moss)}
.next-k{display:block;font:400 .76rem var(--mono);text-transform:uppercase;letter-spacing:.12em;color:var(--rust)}
.next-t{display:block;font:700 1.3rem/1.25 var(--serif);margin-top:4px}
.more-h{font-size:1.2rem;margin:32px 0 8px}
.more-list{padding-left:1.2em}

/* register (guide list) */
.register{list-style:none;margin:8px 0 0;padding:0;border-top:2px solid var(--ink);max-width:62rem}
.reg-row{display:grid;grid-template-columns:96px minmax(0,1fr) 64px;gap:16px;padding:18px 0;border-bottom:1px solid var(--rule-strong);align-items:baseline}
.reg-no{font:400 .82rem var(--mono);color:var(--rust)}
.reg-t{font-size:1.3rem;margin:0 0 4px}
.reg-t a{color:var(--ink);text-decoration:none}
.reg-t a:hover{color:var(--moss);text-decoration:underline}
.reg-body p{margin:0;color:var(--muted);font-size:.97rem}
.reg-min{font:400 .8rem var(--mono);color:var(--muted);text-align:right}
.register-tight .reg-t{font-size:1.15rem}

.notes{list-style:none;padding:0;margin:0;border-top:2px solid var(--ink)}
.notes li{padding:18px 0;border-bottom:1px solid var(--rule-strong)}
.notes time{font:400 .8rem var(--mono);color:var(--rust)}
.notes h2{font-size:1.4rem;margin:4px 0}
.notes h2 a{color:var(--ink)}
.notes p{margin:0;color:var(--muted)}

/* home */
.hero{max-width:52rem;padding:12px 0 28px}
.hero-h1{font-size:clamp(2.2rem,5.6vw,3.9rem);line-height:1.04;margin:0 0 18px;max-width:17ch}
.hero-lede{font-size:1.2rem;max-width:40rem;margin:0 0 10px}
.hero-small{font:400 .82rem var(--mono);color:var(--muted);margin:0}
.sec-h{font-size:1.75rem;margin:0 0 16px}
.tool{margin:20px 0 56px}
.tool-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(280px,380px);gap:36px;align-items:start;max-width:72rem}
.qs{border-top:2px solid var(--ink);min-width:0}
.q{border:0;border-bottom:1px solid var(--rule-strong);margin:0;padding:18px 0 20px;min-width:0}
.q legend{display:flex;gap:14px;align-items:baseline;padding:0;font:700 1.15rem/1.3 var(--serif);float:left;width:100%;margin-bottom:6px}
.q legend+*{clear:both}
.q-no{font:400 .82rem var(--mono);color:var(--rust);flex:none;width:2.2em}
.q-hint{margin:0 0 10px calc(2.2em + 14px);font-size:.92rem;color:var(--muted);clear:both}
.opts{display:flex;flex-wrap:wrap;gap:8px;margin-left:calc(2.2em + 14px);clear:both}
.opt{position:relative;display:inline-flex}
.opt input{position:absolute;opacity:0;width:1px;height:1px}
.opt span{display:inline-block;border:1px solid var(--rule-strong);background:var(--paper);padding:7px 12px;font-size:.93rem;line-height:1.35;cursor:pointer;border-radius:2px}
.opt:hover span{border-color:var(--moss)}
.opt input:checked+span{background:var(--moss);border-color:var(--moss);color:var(--moss-ink);font-weight:600}
.opt input:focus-visible+span{outline:3px solid var(--ochre);outline-offset:2px}
.num-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;margin-left:calc(2.2em + 14px);clear:both}
.num-row>label:first-child{font-size:.9rem;color:var(--muted)}
.num-row input[type=number]{font:400 1rem var(--mono);width:8.5em;padding:7px 10px;border:1px solid var(--rule-strong);background:var(--paper);color:var(--ink);border-radius:2px}
.opt-inline span{font-size:.88rem}
.form-actions{padding:16px 0}
.btn-ghost{font:600 .92rem var(--sans);background:transparent;color:var(--ink);border:1px solid var(--ink);padding:8px 14px;cursor:pointer;border-radius:2px}
.btn-ghost:hover{background:var(--ink);color:var(--paper)}

.verdict{position:sticky;top:20px}
.v-card{border:2px solid var(--ink);background:var(--paper);padding:20px 20px 16px}
.v-card[data-level="green"]{border-color:var(--moss)}
.v-card[data-level="amber"]{border-color:#b88a1e}
.v-card[data-level="red"],.v-card[data-level="stop"]{border-color:var(--rust)}
.v-k{font:400 .76rem var(--mono);text-transform:uppercase;letter-spacing:.14em;color:var(--muted);margin:0}
.v-title{font-size:1.45rem;margin:4px 0 8px}
.v-card[data-level="stop"] .v-title,.v-card[data-level="red"] .v-title{color:var(--rust)}
.v-card[data-level="green"] .v-title{color:var(--moss)}
.v-sum{margin:0 0 12px;font-size:.95rem}
.v-meter{height:6px;background:var(--rule);margin:0 0 4px}
.v-meter span{display:block;height:100%;width:0;background:var(--moss);transition:width .2s}
.v-count{font:400 .76rem var(--mono);color:var(--muted);margin:0 0 10px}
.v-lh{font:400 .76rem var(--mono);text-transform:uppercase;letter-spacing:.1em;margin:14px 0 6px}
.v-lh.is-red{color:var(--rust)}
.v-list{margin:0;padding:0;list-style:none;font-size:.9rem;line-height:1.45}
.v-list li{padding:7px 10px;margin-bottom:5px}
.v-list.is-red li{background:var(--red-bg)}
.v-list.is-amber li{background:var(--amber-bg)}
.v-list.is-good li{background:var(--green-bg)}
.v-fraud{margin-top:14px;border-top:2px solid var(--rust);padding-top:10px;font-size:.9rem}
.v-fraud p{margin:0 0 8px}
.v-fraud-h{font:700 1.05rem var(--serif);color:var(--rust)}
.v-note{font-size:.8rem;color:var(--muted);margin:12px 0 0;line-height:1.5}

.v-mini{display:none}
@media (max-width:1180px){
  .v-mini:not([hidden]){display:flex;gap:10px;align-items:baseline;position:fixed;left:12px;right:12px;bottom:12px;z-index:5;
    background:var(--ink);color:var(--paper);padding:11px 14px;text-decoration:none;font-weight:600;font-size:.93rem;box-shadow:0 4px 18px rgba(0,0,0,.25)}
  .v-mini-k{font:400 .72rem var(--mono);text-transform:uppercase;letter-spacing:.12em;opacity:.8}
  .v-mini-c{margin-left:auto;font:400 .8rem var(--mono)}
  .v-mini[data-level="stop"],.v-mini[data-level="red"]{background:var(--rust);color:#fff}
}
.band{background:var(--moss);color:var(--moss-ink);padding:32px clamp(18px,4vw,40px);margin:0 0 56px;max-width:72rem}
.band-h{font-size:clamp(1.5rem,3vw,2.1rem);margin:0 0 10px;max-width:24ch}
.band p{max-width:44rem;margin:0 0 10px}
.band a{color:var(--moss-ink);font-weight:700}
.home-guides{margin-bottom:56px}

.nf-list{padding-left:1.2em}

/* footer */
.foot{background:var(--ink);color:var(--paper)}
.foot-in{padding:36px clamp(16px,5vw,72px) 28px;max-width:72rem}
.foot a{color:var(--paper)}
.foot-disc{font:700 1.1rem/1.4 var(--serif);max-width:44rem;margin:0 0 6px}
.foot-hist{margin:0 0 24px;opacity:.85;font-size:.93rem;max-width:44rem}
.foot-cols{display:grid;grid-template-columns:2fr 1fr;gap:28px;border-top:1px solid rgba(255,255,255,.2);padding-top:18px}
.foot-h{font:400 .76rem var(--mono);text-transform:uppercase;letter-spacing:.14em;margin:0 0 8px;opacity:.8}
.foot ul{list-style:none;margin:0;padding:0;font-size:.93rem}
.foot li{padding:3px 0}
.foot-small{font-size:.82rem;opacity:.8;margin:22px 0 0}
@media (prefers-color-scheme:dark){.foot{background:#0b0e0b;color:var(--ink)}.foot a{color:var(--ink)}}

/* responsive */
@media (max-width:1180px){
  .art-grid{grid-template-columns:minmax(0,1fr)}
  .art-grid .toc{order:0;position:static;border:1px solid var(--rule);padding:14px 16px;background:var(--paper);max-width:46rem}
  .tool-grid{grid-template-columns:minmax(0,1fr)}
  .verdict{position:static}
}
@media (max-width:860px){
  .frame{grid-template-columns:minmax(0,1fr)}
  .rail{position:static;height:auto;flex-direction:column;gap:12px;padding:14px 16px;border-right:0;border-bottom:1px solid var(--rule-strong)}
  .rail-nav{flex-direction:row;flex-wrap:wrap;border-top:0;gap:4px 16px}
  .rail-nav a{border-bottom:0;padding:4px 0}
  .rail-nav a .n{display:none}
  .rail-nav a[aria-current="page"]{box-shadow:inset 0 -2px 0 var(--moss);padding-left:0}
  .rail-note{display:none}
  main{padding:28px 16px 48px;background-image:none}
  .reg-row{grid-template-columns:minmax(0,1fr);gap:2px}
  .reg-min{text-align:left}
  .foot-cols{grid-template-columns:1fr}
  .foot-in{padding:32px 16px 24px}
  .q-hint,.opts,.num-row{margin-left:0}
  .table-wrap table{min-width:34rem;font-size:.9rem}
  .ledger div{padding-right:12px;margin-right:12px}
}
@media print{.rail,.foot,.toc{display:none}.frame{display:block}main{background:none}}