/* Layout: ledger-first. A carbon "ledger" anchors the hero; sections run on a 12-col grid inside a 1160px wrap; data in mono. */
:root{
  --bg:#F4F6F3; --surface:#FFFFFF; --sunk:#EBEFEB; --ink:#14201A; --muted:#56645D; --line:#D7DFD9;
  --orange:#FF7F00; --orange-ink:#B95600; --orange-soft:#FFF0E0;
  --green:#1D6A4F; --green-soft:#E1EEE7; --slate:#3E4C46;
  --s1:#FF7F00; --s2:#1D6A4F; --s3:#8A9A91; --s4:#C9A227; --s5:#3E4C46;
  --display:"Schibsted Grotesk","PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --body:"IBM Plex Sans","PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,"SFMono-Regular",Menlo,monospace;
  --r:10px;
}
@media (prefers-color-scheme: dark){ :root:not([data-theme="light"]){
  --bg:#0E1411; --surface:#151D19; --sunk:#1B2520; --ink:#E6EDE8; --muted:#9AA8A0; --line:#2A3630;
  --orange:#FF8A1A; --orange-ink:#FFA54D; --orange-soft:#2A1E12;
  --green:#4CBF92; --green-soft:#16302A; --slate:#B8C6BE;
  --s1:#FF8A1A; --s2:#4CBF92; --s3:#6F8279; --s4:#D9B33A; --s5:#B8C6BE; color-scheme:dark } }
:root[data-theme="dark"]{
  --bg:#0E1411; --surface:#151D19; --sunk:#1B2520; --ink:#E6EDE8; --muted:#9AA8A0; --line:#2A3630;
  --orange:#FF8A1A; --orange-ink:#FFA54D; --orange-soft:#2A1E12;
  --green:#4CBF92; --green-soft:#16302A; --slate:#B8C6BE;
  --s1:#FF8A1A; --s2:#4CBF92; --s3:#6F8279; --s4:#D9B33A; --s5:#B8C6BE; color-scheme:dark }

*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto} *{animation:none!important;transition:none!important}}
body{margin:0;background:var(--bg);color:var(--ink);font:400 16px/1.6 var(--body);-webkit-font-smoothing:antialiased}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:30;background:var(--surface)}
html:not([lang="zh-CN"]) .zh, html[lang="zh-CN"] .en{display:none!important}
a{color:inherit}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px;border-radius:4px}
.wrap{max-width:1160px;margin:0 auto;padding-left:max(20px,env(safe-area-inset-left,0px));padding-right:max(20px,env(safe-area-inset-right,0px))}
h1,h2,h3{font-family:var(--display);text-wrap:balance;margin:0;letter-spacing:-.01em}
h2{font-size:clamp(1.6rem,3vw,2.25rem);line-height:1.15;font-weight:700}
h3{font-size:1.05rem;font-weight:700}
p{margin:0}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.eyebrow{font:500 .75rem/1 var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--orange-ink)}
.lead{color:var(--muted);max-width:62ch;font-size:1.05rem}
section{padding-block:72px}
.sec-head{display:grid;gap:12px;margin-bottom:36px;max-width:760px}

/* header */
header.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:color-mix(in srgb,var(--surface) 92%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;gap:16px;min-height:64px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex-shrink:0}
.brand img{height:30px;width:auto}
.brand b{font:700 1.05rem/1 var(--display)}
.brand span{font:500 .72rem/1 var(--mono);color:var(--muted);letter-spacing:.06em;text-transform:uppercase;border-left:1px solid var(--line);padding-left:10px}
nav.links{display:flex;align-items:center;gap:16px;margin-left:auto}
nav.links a{text-decoration:none;color:var(--muted);font-weight:500;font-size:.92rem;white-space:nowrap}
nav.links a:hover{color:var(--ink)}
nav.links .nav-company-link{color:var(--orange-ink)}
.lang{border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:999px;padding:6px 12px;font:500 .8rem var(--mono);cursor:pointer}
.lang:hover{border-color:var(--orange)}
@media (max-width:1260px){.brand>span{display:none}.top .wrap{gap:16px}nav.links{gap:16px}nav.links a{font-size:.875rem}}
@media (max-width:1040px){nav.links{gap:0}nav.links a:not(.nav-company-link){display:none}.brand>span{display:none}}

/* hero */
.hero{padding-block:64px 56px}
.hero .wrap{display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:center}
.hero .wrap>*{min-width:0}
@media (max-width:960px){.hero .wrap{grid-template-columns:1fr}}
.status{display:inline-flex;align-items:center;gap:8px;font:500 .78rem/1 var(--mono);color:var(--green);background:var(--green-soft);border-radius:999px;padding:7px 12px;width:max-content;max-width:100%}
.status i{width:8px;height:8px;border-radius:50%;background:var(--green);animation:pulse 2s infinite}
@keyframes pulse{50%{opacity:.35}}
.hero h1{font-size:clamp(2.3rem,5.2vw,3.9rem);line-height:1.04;font-weight:800;margin-top:20px}
.hero h1 em{font-style:normal;color:var(--orange-ink)}
.hero .lead{margin-top:20px}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.btn{display:inline-flex;align-items:center;gap:8px;border-radius:8px;padding:12px 18px;font-weight:600;text-decoration:none;border:1px solid transparent;cursor:pointer;font-size:.95rem}
.btn.primary{background:var(--orange);color:#1A0E00}
.btn.primary:hover{filter:brightness(1.05)}
.btn.ghost{border-color:var(--line);background:var(--surface)}
.btn.ghost:hover{border-color:var(--ink)}
.hero-facts{display:flex;flex-wrap:wrap;gap:28px;margin-top:36px;padding-top:24px;border-top:1px solid var(--line)}
.hero-facts div{display:grid;gap:4px}
.hero-facts b{font:600 .95rem var(--display)}
.hero-facts span{font-size:.82rem;color:var(--muted)}

/* ledger */
.ledger{background:var(--surface);border:1px solid var(--line);border-radius:14px;box-shadow:0 18px 40px -24px rgba(20,32,26,.35);overflow:hidden}
.ledger-head{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:14px 18px;border-bottom:1px solid var(--line);background:var(--sunk)}
.ledger-head b{font:600 .9rem var(--display)}
.tag{font:500 .68rem/1 var(--mono);letter-spacing:.06em;text-transform:uppercase;border-radius:4px;padding:4px 6px;white-space:nowrap}
.tag.sample{background:var(--orange-soft);color:var(--orange-ink)}
.ledger-scroll{overflow-x:auto}
.ledger table{width:100%;border-collapse:collapse;font-size:.82rem;min-width:520px}
.ledger th{font:500 .68rem var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--muted);text-align:left;padding:10px 14px;border-bottom:1px solid var(--line)}
.ledger td{padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top}
.ledger td.num{text-align:right;font-family:var(--mono);font-variant-numeric:tabular-nums;font-weight:500;white-space:nowrap}
.ledger th.num{text-align:right}
.ledger .src{font-family:var(--mono);font-size:.74rem;color:var(--green)}
.ledger .act small{display:block;color:var(--muted);font-family:var(--mono);font-size:.72rem}
.ledger tr.flash td{animation:row 6s infinite}
.ledger tr:nth-child(2).flash td{animation-delay:1.5s}.ledger tr:nth-child(3).flash td{animation-delay:3s}.ledger tr:nth-child(4).flash td{animation-delay:4.5s}
@keyframes row{0%,18%{background:transparent}6%{background:var(--orange-soft)}}
.mth{display:flex;flex-wrap:wrap;gap:4px}
.mth span{font:500 .66rem/1 var(--mono);padding:4px 5px;border-radius:3px;background:var(--green-soft);color:var(--green)}
.mth span.c{background:var(--orange-soft);color:var(--orange-ink)}
.pending{color:var(--orange-ink);font-family:var(--mono);font-size:.74rem;white-space:nowrap}
.ledger-foot{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:12px 18px;font-size:.78rem;color:var(--muted)}
.ledger-foot b{font-family:var(--mono);color:var(--ink)}

/* architecture */
.band{background:var(--surface);border-block:1px solid var(--line)}
.arch{display:grid;gap:10px;max-width:880px}
.layer{border-radius:var(--r);padding:16px 20px;display:grid;gap:4px;text-align:center}
.layer b{font:700 1rem var(--display)}
.layer > span{font:400 .8rem var(--mono);opacity:.85}
.l-erp{background:var(--sunk);border:1px solid var(--line)}
.l-base{background:var(--orange);color:#1A0E00}
.l-ai{background:var(--ink);color:var(--bg)}
.arrow{justify-self:center;color:var(--orange);font-size:.9rem;line-height:1}
.mods{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.mod{border:1px solid var(--line);border-radius:var(--r);padding:16px;background:var(--bg);display:grid;gap:10px;align-content:start}
.mod h3{color:var(--orange-ink)}
.mod .sub{font:400 .76rem var(--mono);color:var(--muted)}
.mod ul{margin:0;padding:0;list-style:none;display:grid;gap:6px}
.mod li{background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:7px 10px;font-size:.88rem}
@media (max-width:620px){.mods{grid-template-columns:1fr}}
.arch-wrap{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,340px);gap:48px;align-items:start}
@media (max-width:960px){.arch-wrap{grid-template-columns:1fr}}
.principle{border-left:3px solid var(--orange);padding:4px 0 4px 18px;display:grid;gap:10px}
.principle p{font:600 1.15rem/1.45 var(--display)}
.principle small{color:var(--muted);font-size:.9rem}
.compare{width:100%;border-collapse:collapse;font-size:.88rem;margin-top:28px}
.compare th,.compare td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top}
.compare thead th{font:500 .7rem var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.compare tbody th{font-weight:600;width:24%}

/* modules grid */
.grid4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
@media (max-width:1000px){.grid4{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:560px){.grid4{grid-template-columns:1fr}}
.erp{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:18px;display:grid;gap:10px;align-content:start}
.erp .od{font:500 .72rem var(--mono);color:var(--muted)}
.erp dl{margin:0;display:grid;gap:8px;font-size:.86rem}
.erp dt{font:500 .66rem var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.erp dd{margin:0}
.chips{display:flex;flex-wrap:wrap;gap:5px;margin-top:2px}
.chip{font:500 .66rem/1 var(--mono);padding:4px 6px;border-radius:3px;border:1px solid var(--line);color:var(--slate)}
.chip.cb{border-color:var(--orange);color:var(--orange-ink)}
.rules{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:36px;padding-top:28px;border-top:1px solid var(--line)}
@media (max-width:820px){.rules{grid-template-columns:1fr}}
.rules h3{font-size:.95rem;margin-bottom:6px}
.rules p{font-size:.9rem;color:var(--muted)}

/* roadmap */
.road{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;counter-reset:ph}
@media (max-width:900px){.road{grid-template-columns:1fr 1fr;gap:16px}}
@media (max-width:520px){.road{grid-template-columns:1fr}}
.phase{padding:20px;border-top:3px solid var(--line);display:grid;gap:10px;align-content:start}
.phase.now{border-top-color:var(--orange)}
.phase.next{border-top-color:var(--green)}
.phase .n{font:500 .72rem var(--mono);color:var(--muted)}
.pill{font:500 .68rem/1 var(--mono);padding:5px 8px;border-radius:999px;width:max-content;text-transform:uppercase;letter-spacing:.06em}
.pill.now{background:var(--orange);color:#1A0E00}
.pill.next{background:var(--green-soft);color:var(--green)}
.pill.later{background:var(--sunk);color:var(--muted)}
.phase p{font-size:.9rem;color:var(--muted)}

/* calculators */
.tabs{display:flex;gap:6px;flex-wrap:wrap;border-bottom:1px solid var(--line);margin-bottom:0}
.tab{border:1px solid transparent;border-bottom:none;background:none;color:var(--muted);padding:11px 16px;font:600 .9rem var(--body);cursor:pointer;border-radius:8px 8px 0 0;margin-bottom:-1px}
.tab[aria-selected="true"]{background:var(--surface);border-color:var(--line);color:var(--ink);box-shadow:inset 0 3px 0 var(--orange)}
.tab small{display:block;font:500 .66rem var(--mono);color:var(--muted);letter-spacing:.04em}
.panel{background:var(--surface);border:1px solid var(--line);border-top:none;border-radius:0 0 14px 14px;padding:28px}
.calc{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:36px}
@media (max-width:880px){.calc{grid-template-columns:1fr}.panel{padding:20px}}
.fields{display:grid;gap:14px;align-content:start}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media (max-width:480px){.row2{grid-template-columns:1fr}}
label.f{display:grid;gap:6px;font-size:.84rem;font-weight:500}
label.f small{font-weight:400;color:var(--muted);font-size:.76rem}
input[type=number],input[type=text],select{width:100%;font:500 .95rem var(--mono);color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:7px;padding:10px 11px;font-variant-numeric:tabular-nums}
input:focus,select:focus{outline:none;border-color:var(--orange);box-shadow:0 0 0 3px var(--orange-soft)}
.check{display:flex;gap:10px;align-items:flex-start;font-size:.85rem}
.check input{margin-top:4px;accent-color:var(--orange)}
.result{background:var(--sunk);border-radius:12px;padding:22px;display:grid;gap:16px;align-content:start}
.big{display:grid;gap:4px}
.big .v{font:600 clamp(2rem,4vw,2.7rem)/1 var(--mono);font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.big .u{font:500 .82rem var(--mono);color:var(--muted)}
.kv{display:grid;gap:8px;font-size:.86rem}
.kv div{display:flex;justify-content:space-between;gap:12px;border-bottom:1px dashed var(--line);padding-bottom:6px}
.kv b{font-family:var(--mono);font-weight:500;font-variant-numeric:tabular-nums;text-align:right}
.formula{font:400 .78rem/1.5 var(--mono);color:var(--muted);background:var(--surface);border:1px solid var(--line);border-radius:7px;padding:10px 12px;overflow-x:auto}
.note{font-size:.78rem;color:var(--muted)}
.bars{display:grid;gap:9px}
.bar{display:grid;grid-template-columns:90px minmax(0,1fr) 78px;gap:10px;align-items:center;font-size:.8rem}
.bar .track{height:12px;background:var(--surface);border-radius:3px;overflow:hidden}
.bar .fill{height:100%;background:var(--s3);border-radius:3px;transition:width .35s}
.bar.on .fill{background:var(--orange)}
.bar.on{font-weight:600}
.bar b{font-family:var(--mono);font-weight:500;text-align:right;font-variant-numeric:tabular-nums}
.stack{display:flex;height:16px;border-radius:4px;overflow:hidden;background:var(--surface)}
.stack i{display:block;height:100%;transition:width .35s}
.legend{display:grid;gap:6px;font-size:.8rem}
.legend div{display:grid;grid-template-columns:12px minmax(0,1fr) auto;gap:8px;align-items:center}
.legend s{width:12px;height:12px;border-radius:3px;display:block}
.legend b{font-family:var(--mono);font-weight:500;font-variant-numeric:tabular-nums}
.bom{width:100%;border-collapse:collapse;font-size:.84rem}
.bom th{font:500 .66rem var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--muted);text-align:left;padding:0 6px 6px}
.bom td{padding:4px 6px 4px 0}
.bom input{padding:8px 9px;font-size:.85rem}
.bom td.x{width:34px}
.icon-btn{border:1px solid var(--line);background:var(--surface);color:var(--muted);border-radius:6px;width:30px;height:34px;cursor:pointer;font-size:1rem}
.icon-btn:hover{color:var(--orange-ink);border-color:var(--orange)}
.add{justify-self:start;border:1px dashed var(--line);background:none;color:var(--ink);border-radius:7px;padding:8px 12px;font:500 .84rem var(--body);cursor:pointer}
.add:hover{border-color:var(--orange)}
.bom-scroll{overflow-x:auto}
.bom-scroll table{min-width:440px}
.disclaimer{margin-top:18px;font-size:.8rem;color:var(--muted);display:flex;gap:10px;align-items:flex-start}
.disclaimer b{color:var(--orange-ink)}

/* resources */
.res-groups{display:grid;gap:36px}
.res-group h3{font:500 .74rem var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:14px;padding-bottom:10px;border-bottom:1px solid var(--line)}
.res{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
@media (max-width:900px){.res{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:560px){.res{grid-template-columns:1fr}}
.res a{display:grid;gap:6px;text-decoration:none;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:16px;transition:border-color .2s,transform .2s}
.res a:hover{border-color:var(--orange);transform:translateY(-2px)}
.res .org{font:500 .7rem var(--mono);color:var(--muted)}
.res b{font:600 .98rem/1.3 var(--display)}
.res p{font-size:.84rem;color:var(--muted)}
.res .go{font:500 .74rem var(--mono);color:var(--orange-ink)}

/* research */
.research{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px;align-items:start}
@media (max-width:900px){.research{grid-template-columns:1fr}}
.title-card{background:var(--ink);color:var(--bg);border-radius:14px;padding:28px;display:grid;gap:12px}
.title-card .eyebrow{color:var(--orange)}
.title-card h3{font-size:1.35rem;line-height:1.35}
.title-card p{font-size:.92rem;opacity:.75;font-style:italic}
.focus{display:grid;gap:14px;margin:0;padding:0;list-style:none}
.focus li{display:grid;grid-template-columns:28px minmax(0,1fr);gap:12px}
.focus li::before{content:"";width:10px;height:10px;margin-top:8px;border-radius:2px;background:var(--orange);justify-self:center}
.focus b{display:block;font-family:var(--display)}
.focus span{color:var(--muted);font-size:.9rem}

/* cta + footer */
.cta{background:var(--orange);color:#1A0E00}
.cta .wrap{display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap;padding-block:48px}
.cta h2{max-width:22ch}
.cta .btn{background:#1A0E00;color:#FFF3E6}
footer{padding-block:32px;font-size:.8rem;color:var(--muted)}
footer .wrap{display:grid;gap:12px}
footer .f1{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;align-items:center}
footer img{height:22px;width:auto;vertical-align:middle;margin-right:8px}

/* Native website integration controls; the supplied design remains page-local. */
.theme{width:auto;max-width:100px;padding:6px 8px;font-size:.75rem;background:var(--surface)}
.full-calculators{margin-top:22px;display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.full-calculators p{max-width:58ch;color:var(--muted);font-size:.85rem}
.validation-note{border:1px solid var(--orange-ink);background:var(--orange-soft);color:var(--orange-ink);padding:10px 12px;border-radius:7px;font-size:.85rem}
[hidden]{display:none!important}
@media(max-width:520px){.top .wrap{gap:9px}.brand{gap:7px}.brand b{font-size:.95rem}.lang{padding:6px 9px}.theme{max-width:82px;font-size:.7rem}}
@media(max-width:420px){.top .wrap{gap:7px}.brand b{display:none}nav.links .nav-company-link{font-size:.78rem}.theme{max-width:80px}}