/* NV-I01 production stylesheet. Tokens from the approved Figma NV-D02 (Web 1440 / PAD 1280 / Compat 1024 / Mobile 390).
   Fonts: DengXian (Chinese) + Helvetica (Latin/digits) from the generated per-locale sheets; Noto Sans SC is a design-file-only exception. */
:root{--primary:#1d327b;--accent:#ea5b0c;--bg:#fff;--sec:#f2f4f7;--bd:#dce1e8;--fg:#172138;--mut:#5b6577;
 --pad:80px;--h1:48px;--h2:28px;--sh2:34px;--hero:56px;--body:16px;--lead:18px;--row-h:20px;
 --font:Helvetica,DengXian,"IBM Plex Sans JP",system-ui,sans-serif}
@media (max-width:1359px){:root{--pad:64px;--h1:44px;--h2:24px;--sh2:30px;--hero:48px}}
@media (max-width:1099px){:root{--pad:32px;--h1:38px;--h2:22px;--sh2:28px;--hero:40px;--body:15px;--lead:17px}}
@media (max-width:699px){:root{--pad:20px;--h1:30px;--h2:22px;--sh2:24px;--hero:30px;--lead:16px}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:80px}
body{margin:0;font:400 var(--body)/1.6 var(--font);color:var(--fg);background:var(--bg);overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
h1,h2,h3,p,ul,ol,dl,dd,figure{margin:0}
ul,ol{padding:0;list-style:none}
[hidden]{display:none!important}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:8px;top:-60px;z-index:50;background:var(--primary);color:#fff;padding:12px 16px;border-radius:8px}
.skip:focus{top:8px}
.in{max-width:1440px;margin:0 auto;padding-inline:var(--pad)}
/* header */
.hdr{position:sticky;top:0;z-index:30;background:var(--bg);border-bottom:1px solid var(--bd)}
.hdr-in{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px;padding:8px var(--pad);max-width:1440px;margin:0 auto}
.logo{display:flex;align-items:center;min-height:44px;min-width:44px}
.nav,.drawer{display:flex;gap:12px;align-items:center}
.nav a,.drawer a{display:flex;align-items:center;justify-content:center;min-height:44px;min-width:44px;padding:10px 4px;font-weight:500;font-size:15px;text-decoration:none;color:var(--fg);white-space:nowrap}
.nav a:hover,.drawer a:hover{color:var(--primary)}
.nav a[aria-current],.drawer a[aria-current]{color:var(--primary);box-shadow:inset 0 -3px 0 var(--accent)}
.hdr-ctl{display:flex;align-items:center;gap:8px}
details.lang-switch{position:relative}
summary{list-style:none;cursor:pointer;display:flex;align-items:center;min-height:44px;min-width:44px;padding:10px 12px;border:1px solid var(--bd);border-radius:8px;font-weight:500;font-size:15px;color:var(--primary);background:var(--bg);user-select:none}
summary::-webkit-details-marker{display:none}
details.lang-switch summary::after{content:"";margin-left:8px;border:4px solid transparent;border-top:5px solid currentColor;border-bottom:0}
details[open]>summary{background:var(--sec)}
nav.langs{position:absolute;right:0;top:calc(100% + 6px);z-index:40;background:var(--bg);border:1px solid var(--bd);border-radius:8px;box-shadow:0 8px 24px rgba(23,33,56,.14);padding:6px;min-width:168px;flex-direction:column;align-items:stretch;gap:0}
nav.langs{display:flex;flex-direction:column}
nav.langs[hidden]{display:none}
details.lang-switch:not([open])>nav.langs{display:none}
.drawer{position:absolute;left:20px;right:20px;top:100%;z-index:40;background:var(--bg);border:1px solid var(--bd);border-radius:8px;box-shadow:0 8px 24px rgba(23,33,56,.14);padding:8px 0 8px;display:flex;flex-direction:column}
.drawer nav{display:flex;flex-direction:column;gap:0}
.drawer a{justify-content:flex-start;min-height:48px;padding:0 20px;font-size:16px;border-radius:0}
.drawer .mclose,.drawer .mlang{display:none;align-items:center;min-height:48px;min-width:48px;border:0;background:none;font:500 16px/1 var(--font);color:var(--primary);cursor:pointer;padding:0 20px}
.js .drawer .mclose{display:flex;align-self:flex-end;font-size:26px;justify-content:center}
.js .drawer .mlang{display:flex}
details.menu:not([open])>.drawer{display:none}
details.menu[open]::after{content:"";position:fixed;inset:0;background:rgba(23,33,56,.18);z-index:-1}
nav.langs a{display:flex;align-items:center;min-height:44px;padding:10px 12px;text-decoration:none;border-radius:6px;font-size:15px}
nav.langs a:hover,nav.langs a[aria-current]{background:var(--sec);color:var(--primary)}
details.menu{display:none}
@media (max-width:1099px){.nav{display:none}details.menu{display:block}}
.aitr{margin:0;padding:8px var(--pad);background:var(--sec);color:var(--mut);font-size:13px}
.aitr a{color:var(--primary)}
/* generic */
main:focus{outline:none}
.eyebrow{font-size:12px;font-weight:500;letter-spacing:1.2px;text-transform:uppercase;color:var(--accent);line-height:1.6}
.eyebrow.light{color:#fff}
h1{font-size:var(--h1);line-height:1.25;font-weight:700;color:var(--primary);overflow-wrap:anywhere}
h2{font-size:var(--sh2);line-height:1.3;font-weight:700;color:var(--primary);margin:6px 0 12px}
h2.h3,.h3{font-size:var(--h2);line-height:1.35;font-weight:700;color:var(--primary)}
h3{font-size:var(--row-h);line-height:1.4;font-weight:700;color:var(--primary)}
.lead{font-size:var(--lead);line-height:1.6;color:var(--fg)}
.lead2{font-size:17px;line-height:1.7;color:var(--mut)}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;min-width:48px;padding:12px 24px;border-radius:8px;border:1px solid var(--primary);font:500 15px/1 var(--font);text-decoration:none;cursor:pointer;background:var(--primary);color:#fff}
.btn:hover{filter:brightness(1.12)}
.btn:disabled{opacity:.55;cursor:not-allowed}
.btn.accent{background:var(--accent);border-color:var(--accent)}
.btn.ghostw{background:transparent;border-color:#fff}
.btn.line,.btn.ghost{background:transparent;color:var(--primary)}
.btn.light{background:#fff;color:var(--primary);border-color:#fff}
.acts{display:flex;flex-wrap:wrap;gap:12px;margin-top:8px}
.tl{display:inline-flex;align-items:center;min-height:44px;color:var(--primary);font-weight:500;text-decoration:none}
.tl:hover{text-decoration:underline}
.mail{color:var(--primary)}
/* hero */
.hero{position:relative;min-height:680px;display:flex;align-items:flex-end;background:var(--primary);color:#fff;overflow:hidden}
.hero-bg{position:absolute;inset:0}
.hero-bg img,.strip img{width:100%;height:100%;object-fit:cover}
.hero-bg::after{content:"";position:absolute;inset:0;background:var(--primary);opacity:.55}
.hero-tx{position:relative;width:100%;padding-block:0 67px}
.hero-tx>*{max-width:760px}
.hero-tx{display:flex;flex-direction:column;gap:18px}
.hero h1{font-size:var(--hero);line-height:1.2;color:#fff}
.hero .lead{color:#fff}
@media (max-width:1359px){.hero{min-height:620px}}@media (max-width:1099px){.hero{min-height:600px}}@media (max-width:699px){.hero{min-height:660px}.hero-tx{padding-bottom:40px}.hero .acts{flex-direction:column}.hero .btn{width:100%}}
.strip{height:var(--h,220px);overflow:hidden;background:var(--primary)}
.strip picture{display:block;height:100%}
/* sections */
.sec{padding-block:96px}.sec.alt,.sec.alt2{background:var(--sec)}
.sec.alt2{padding-block:0 56px}
@media (max-width:1099px){.sec{padding-block:64px}}@media (max-width:699px){.sec{padding-block:40px}}
.split{display:flex;gap:56px;align-items:flex-start}
.split>*{flex:1 1 0;min-width:0}
.split>:last-child{flex:0 1 612px}
.split.a>:last-child{flex:0 1 759px}
@media (max-width:1099px){.split{flex-direction:column;gap:28px}.split>:last-child,.split.a>:last-child{flex:1 1 auto;width:100%}}
.num{font-size:13px;color:var(--accent);font-weight:500}
.years{display:flex;gap:48px;margin-top:8px}
.years>div{flex:1;border-top:1px solid var(--bd);padding-top:12px}
.years dt{font-size:56px;font-weight:700;color:var(--primary);line-height:1.1}
.years dd{font-size:17px;color:var(--mut)}
@media (max-width:699px){.years{gap:20px}.years dt{font-size:40px}}
.irows{margin-top:28px}
.irows li{display:flex;gap:32px;align-items:center;padding:26px 0;border-top:1px solid var(--bd)}
.irows h3{width:240px;flex:none;font-size:24px}
.irows p{flex:1;color:var(--mut);font-size:17px}
@media (max-width:1099px){.irows li{flex-wrap:wrap;gap:8px}.irows h3,.irows p{width:100%;flex:1 1 100%}}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:28px}
.steps li{border-top:1px solid var(--bd);padding-top:14px;display:flex;flex-direction:column;gap:6px}
.steps h3{font-size:22px}.steps p{color:var(--mut)}
.n{font-size:12px;font-weight:500;color:var(--accent)}
@media (max-width:1099px){.steps{grid-template-columns:repeat(2,1fr)}}@media (max-width:699px){.steps{grid-template-columns:1fr}}
.cand{display:flex;gap:16px;align-items:center;justify-content:space-between;margin-top:28px;padding:24px;background:#fff;border:1px solid var(--bd)}
.cname{font-size:22px;font-weight:700;color:var(--primary)}
@media (max-width:699px){.cand{flex-direction:column;align-items:stretch}}
/* list pages */
.band{padding-block:48px}
.band .in>*+*{margin-top:18px}
.crumb ol{display:flex;flex-wrap:wrap;gap:0 6px;font-size:14px;color:var(--mut)}
.crumb li+li::before{content:"/";margin-right:6px}
.crumb a{display:inline-flex;align-items:center;min-height:44px;color:var(--mut);text-decoration:none}
.crumb a:hover{color:var(--primary)}
.crumb li{display:flex;align-items:center}
.count{font-size:var(--lead);color:var(--mut)}
.filters{display:flex;flex-direction:column;gap:12px}
.search input{width:100%;max-width:560px;min-height:48px;padding:12px 16px;border:1px solid var(--bd);border-radius:8px;font:inherit;background:#fff}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{min-height:44px;padding:8px 14px;border:1px solid var(--bd);border-radius:8px;background:#fff;color:var(--fg);font:400 14px/1.3 var(--font);cursor:pointer;white-space:nowrap}
.chip[aria-pressed=true]{background:var(--primary);border-color:var(--primary);color:#fff}
.empty{color:var(--mut)}
.clear{align-self:flex-start;min-height:44px;padding:8px 16px}
.rows .rowi{border-bottom:1px solid var(--bd)}
.row{display:flex;gap:32px;align-items:center;padding:18px 0;text-decoration:none;color:inherit}
.row:hover h3{text-decoration:underline}
.rtx{flex:1;min-width:0;display:flex;flex-direction:column;gap:6px}
.rtx p:not(.tags){color:var(--mut);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.tags{display:flex;flex-wrap:wrap;gap:0 12px;font-size:13px;color:var(--mut)}
.tags span:first-child{color:var(--accent);font-weight:500}
.tags .tag{border:1px solid var(--bd);padding:0 8px;border-radius:4px}
.rgo{flex:none;min-height:44px;display:flex;align-items:center;color:var(--primary);font-weight:500}
.rph{flex:none;width:196px;height:112px;overflow:hidden;background:var(--sec)}
.rph picture{display:block;height:100%}.rph img{width:100%;height:100%;object-fit:cover}
@media (max-width:699px){.row{flex-wrap:wrap;gap:12px}.rph{width:100%;height:auto;aspect-ratio:16/9}.rgo{width:100%}}
.rows.in-sec,.sec .rows{margin-top:8px}
/* detail */
.body{max-width:800px}.body>*+*{margin-top:18px}
.body hr,.reading hr{border:0;border-top:1px solid var(--bd);margin:28px 0 0}
.body p,.reading p{font-size:16px;line-height:1.8}
.body p.lead,.reading p.lead{font-size:var(--lead)}
.evid{background:var(--sec);border-top:3px solid var(--accent);padding:16px 20px}
.reading{display:flex;gap:48px;align-items:flex-start}
.reading .body{flex:1 1 0;min-width:0;max-width:800px}
.toc{flex:0 0 200px;position:sticky;top:88px;font-size:14px}
.tocT{font-size:13px;color:var(--mut)}
.toc ol{display:flex;flex-direction:column}
.toc a{display:flex;align-items:center;min-height:44px;color:var(--fg);text-decoration:none}.toc a:hover{color:var(--primary)}
@media (max-width:1099px){.reading{flex-direction:column-reverse;gap:24px}.toc{position:static;flex:none;width:100%}}
.phero .split{margin-top:12px;align-items:center}
.pm{display:block;font-size:var(--hero);line-height:1.15}.pn{display:block;font-size:29px;line-height:1.3;margin-top:8px}
@media (max-width:699px){.pn{font-size:22px}}
.ptx{display:flex;flex-direction:column;gap:20px}
.pimg{overflow:hidden;height:344px;background:var(--sec)}.pimg picture{display:block;height:100%}.pimg img{width:100%;height:100%;object-fit:cover}
@media (max-width:699px){.pimg{height:auto;aspect-ratio:16/10}}
.note{padding:12px 16px;background:var(--sec);border-left:3px solid var(--accent);color:var(--mut)}
.items{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:20px}
.items.two{grid-template-columns:repeat(2,1fr)}
.items li{border-top:1px solid var(--bd);padding-top:14px;display:flex;flex-direction:column;gap:6px}
@media (max-width:1099px){.items,.items.two{grid-template-columns:1fr}}
.pgrid{columns:2 340px;column-gap:56px;margin-top:20px}
.prow{display:flex;gap:16px;padding:14px 0;border-bottom:1px solid var(--bd);break-inside:avoid}
.prow dt{flex:0 0 160px;font-weight:700;color:var(--primary)}.prow dd{flex:1;min-width:0;overflow-wrap:anywhere}
@media (max-width:699px){.pgrid{columns:1}.prow{flex-direction:column;gap:4px}.prow dt{flex:none}}
.fire{border:1px solid var(--bd);background:#fff;padding:28px;display:flex;flex-direction:column;gap:12px}
.src{font-size:13px;color:var(--mut)}
.cta{background:var(--primary);color:#fff;padding-block:48px}
.cta .in{display:flex;flex-direction:column;gap:18px}.cta h2{color:#fff;margin:0}.cta p{font-size:14px}
/* contact */
.contact{display:flex;gap:32px;align-items:flex-start;margin-top:24px}
.form{flex:1;min-width:0;display:flex;flex-direction:column;gap:14px}
.cinfo{flex:0 0 340px;background:#f4f7fa;border-radius:8px;padding:20px;display:flex;flex-direction:column;gap:10px}
@media (max-width:1099px){.contact{flex-direction:column}.cinfo{flex:none;width:100%}}
.frow{display:grid;grid-template-columns:1fr 1fr;gap:14px}@media (max-width:699px){.frow{grid-template-columns:1fr}}
.fld{display:flex;flex-direction:column;gap:6px}.fld label{font-size:14px;font-weight:700}
.fld input,.fld select,.fld textarea{min-height:48px;padding:12px;border:1px solid #aab3c2;border-radius:8px;font:inherit;background:#fff;color:var(--fg);width:100%}
.fld textarea{min-height:140px;resize:vertical}
.fld.faddr textarea{min-height:96px}
.fhelp{margin:0;font-size:14px;color:var(--mut)}
.fproc{display:flex;flex-direction:column;gap:14px}
.fld [aria-invalid=true]{border-color:#b3261e;outline:1px solid #b3261e}
.route,.policy,.fnote{font-size:14px;color:var(--mut)}
.route{color:var(--primary);font-weight:500}
.ferr{color:#b3261e;font-weight:500}
.fnote.hit{color:var(--primary);font-weight:500}
.mailline{display:flex;flex-wrap:wrap;gap:8px 12px;align-items:center;font-size:14px}.mailline a{display:inline-flex;align-items:center;min-height:44px}
.copybtn{min-height:44px;padding:8px 16px}
button[aria-busy=true]{cursor:progress}
/* 404 */
.err .code{font-size:120px;line-height:1;font-weight:700;color:var(--primary)}
.err .in{padding-block:72px}
@media (max-width:699px){.err .code{font-size:72px}}
/* footer */
.ftr{background:var(--primary);color:#fff}
.ftr-in{max-width:1440px;margin:0 auto;padding:58px var(--pad) 28px;display:flex;flex-direction:column;gap:24px}
@media (max-width:699px){.ftr-in{padding-top:29px}}
.ftr-split{display:flex;gap:56px;align-items:flex-start}
.ftr-a{flex:1 1 0;min-width:0;display:flex;flex-direction:column;gap:20px}
.ftr-b{flex:0 0 612px;max-width:100%;display:flex;flex-direction:column;gap:20px}
@media (max-width:1099px){.ftr-split{flex-direction:column;gap:16px}.ftr-b{flex:none;width:100%}}
.fname{font-size:20px;font-weight:700}
.ftr address{font-style:normal;display:flex;flex-direction:column;gap:20px;font-size:16px}
.ftr-b>p:first-child{font-size:16px}
@media (max-width:699px){.ftr address,.ftr-b>p:first-child{font-size:14px}}
.ftr .mail,.ftr a{color:#fff}
.flinks{display:flex;flex-wrap:wrap;gap:4px}.flinks a{display:inline-flex;align-items:center;justify-content:center;min-height:44px;min-width:44px;padding:10px 4px;font-size:14px;font-weight:500;text-decoration:none;white-space:nowrap}
.fbar{font-size:13px;line-height:20px}
.fbar a{display:inline-flex;align-items:center;min-height:44px}
@media (hover:none){.nav a:hover,.row:hover h3{text-decoration:none}}
@media (prefers-reduced-motion:no-preference){.btn,.chip{transition:filter .15s,background-color .15s}}

/* approved product layout: conditions row, sample+related split */
.items.four{grid-template-columns:repeat(4,1fr)}
@media (max-width:1099px){.items.four{grid-template-columns:1fr}}
.items h3+p{color:var(--mut)}
.sc{display:flex;flex-direction:column;gap:8px}
.sc .acts{margin-top:12px}
.relr li{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:6px 0;border-bottom:1px solid var(--bd);font-weight:700;color:var(--primary)}
.relr{margin-top:8px}
.drawer .mlang::after{content:"";margin-left:8px;border:4px solid transparent;border-top:5px solid currentColor;border-bottom:0}
/* NV-I01 fidelity: approved building-elevator frames 1116:7193/7348/7503/7648 (scoped ib-*), plus AN2-800 fire-block in-page link */
.ib-hero{padding-block:56px}
.ib-split{display:flex;gap:56px;align-items:center}
.ib-split>.ib-tx{flex:1 1 0;min-width:0}
.ib-split>.ib-photo{flex:0 0 48%}
.ib-tx>*+*{margin-top:18px}.ib-tx>.eyebrow{margin-top:0}
.ib-tx h2{margin-block:0}.ib-tx .lead2{margin-top:12px}
.ib-photo{aspect-ratio:4/3;overflow:hidden;background:var(--sec)}
.ib-photo picture{display:block;height:100%}.ib-photo img{width:100%;height:100%;object-fit:cover}
.ib-acts{flex-direction:column;align-items:flex-start;gap:12px}
.ib-acts.ib-row{flex-direction:row;flex-wrap:wrap;margin-top:24px}
.ib-method .ib-acts{margin-top:32px}
.steps.ib-n3{grid-template-columns:repeat(3,1fr)}
.ib-conds{margin-top:20px}
.ib-conds li{display:flex;align-items:center;gap:16px;padding-block:20px;border-bottom:1px solid var(--bd)}
.ib-conds li:first-child{border-top:0}
.ib-conds h3{font-size:18px;font-weight:500;color:var(--fg)}
.ib-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:28px}
.ib-card{display:flex;flex-direction:column;gap:12px;height:100%;padding:28px;background:#fff;border:1px solid var(--bd);text-decoration:none;color:inherit}
.ib-card h3{font-size:24px}.ib-card p{color:var(--mut)}
.ib-go{color:var(--primary);font-weight:700;font-size:14px;min-height:44px;display:flex;align-items:center}
.ib-card:hover .ib-go{text-decoration:underline}
@media (max-width:699px){.ib-split{flex-direction:column;align-items:stretch;gap:28px}.ib-split>.ib-photo{flex:none;width:100%}.ib-hero{padding-block:32px}
 .steps.ib-n3,.ib-cards{grid-template-columns:1fr}
 .ib-acts .btn,.ib-acts.ib-row .btn{width:100%}.ib-acts{align-items:stretch}.ib-acts.ib-row{flex-direction:column}.ib-acts .tl{align-self:flex-start}}
#technical-data{scroll-margin-top:72px}
.fire-link{align-self:flex-start}
/* NV-I01 fidelity: approved Compat 1024 body (only nav is compact), Mobile390 shared components, generic product body (AN6-S130 frames) */
@media (min-width:700px) and (max-width:1099px){
 .split{flex-direction:row;gap:32px;align-items:flex-start}
 .split>:last-child{flex:0 1 612px;width:auto}.split.a>:last-child{flex:0 1 759px;width:auto}
 .split:not(.a) .acts{flex-direction:column;align-items:flex-start}
 .phero .split{align-items:center}
 .irows li{flex-wrap:nowrap;gap:32px}.irows h3{width:240px;flex:none}.irows p{width:auto;flex:1 1 0}
 .items{grid-template-columns:repeat(3,1fr)}.items.two,.items.four{grid-template-columns:repeat(2,1fr)}
 .gp-split>.pimg{flex:0 1 420px}
}
@media (max-width:699px){
 .hero .acts,.split .acts,.sc .acts,.phero .acts,.form .acts{flex-direction:column;align-items:stretch}
 .hero .acts .btn,.split .acts .btn,.sc .acts .btn,.phero .acts .btn,.form .acts .btn{width:100%}
 .split .acts .tl,.sc .acts .tl,.phero .acts .tl{align-self:flex-start}
 .years{flex-direction:column;gap:20px}
 .pgrid .prow{flex-direction:row;gap:16px}.pgrid .prow dt{flex:0 0 40%}
}
.gp-cat{font-size:13px;color:var(--mut)}
.gp-hero .ptx>*+*{margin-top:0}
.gp-sec h2{margin:0 0 16px}
.gp-rows{border-top:1px solid var(--bd)}
.gp-rows li{padding:18px 0;border-bottom:1px solid var(--bd);line-height:1.7}
.gp-grid{display:grid;grid-template-columns:repeat(2,1fr);column-gap:56px;border-top:1px solid var(--bd)}
.gp-grid .prow{padding:14px 0}
.gp-grid .prow dt{flex:0 0 160px;font-weight:400;color:var(--mut);font-size:14px}
@media (max-width:699px){.gp-grid{grid-template-columns:1fr}.gp-grid .prow{flex-direction:column;gap:4px}.gp-grid .prow dt{flex:none}}
.gp-rel li{border-bottom:1px solid var(--bd)}
.gp-rel a{display:flex;justify-content:space-between;align-items:center;gap:24px;padding:22px 0;text-decoration:none;color:inherit}
.gp-rel h3{margin:0 0 6px}.gp-rel p{color:var(--mut)}
.gp-go{flex:none;min-height:44px;display:flex;align-items:center;color:var(--accent);font-weight:700}
/* SG-01 0.3.3 FAQ (technical roots): Figma 1196:24983 geometry. Padding-X comes from .in (--pad 80/64/32/20); tokens only. */
.faq{padding-block:48px}
.faq .in{display:flex;flex-direction:column;gap:24px}
.faq-head{display:flex;flex-direction:column;gap:12px}
.faq h2{margin:0;font-size:24px;line-height:38px;font-weight:500;color:var(--primary)}
.faq-intro{margin:0;font-size:16px;line-height:27px;color:var(--mut)}
.faq-list{list-style:none;margin:0;padding:0}
.faq-row{display:flex;flex-direction:column;gap:12px;padding-block:24px;border-bottom:1px solid var(--bd)}
.faq-q{margin:0;font-size:20px;line-height:29px;font-weight:500;color:var(--fg)}
.faq-a{margin:0;font-size:16px;line-height:27px;color:var(--mut)}
@media (max-width:699px){.faq{padding-block:32px}}
/* SG-01 0.3.4 optional statistics: consent bar, footer stats row, settings page. Figma 1203:25023 (Web 1440 / PAD 1280 / Compat 1024 / Mobile 390). Tokens only. */
body{padding-bottom:var(--stats-reserve,0px)}
html{scroll-padding-bottom:var(--stats-reserve,0px)}
.stats-bar{position:fixed;left:0;right:0;bottom:0;z-index:20;display:flex;align-items:center;gap:32px;padding:24px 64px;background:var(--bg);border-top:1px solid var(--bd);max-height:70vh;overflow-y:auto}
.stats-text{flex:1 1 0;min-width:0;display:flex;flex-direction:column;gap:12px}
.stats-text p{font-size:16px;line-height:27px;color:var(--fg)}
.stats-bar .stats-more{font-size:16px;line-height:27px;font-weight:400;text-decoration:underline;text-underline-position:from-font;align-self:flex-start}
.stats-actions{display:flex;gap:16px;flex:0 0 480px;width:480px}
.stats-btn{flex:1 1 0;min-height:48px;line-height:1.25;text-align:center}
@media (max-width:1359px){.stats-bar{padding-inline:48px}}
@media (max-width:1099px){.stats-bar{flex-direction:column;align-items:stretch;gap:16px;padding-inline:32px}.stats-actions{flex:none;width:100%}}
@media (max-width:699px){.stats-bar{padding:16px}.stats-text p{font-size:14px;line-height:21px}.stats-actions{flex-direction:column;gap:12px}.stats-actions .stats-btn{flex:none;width:100%}}
.stats-row{display:flex;align-items:center;--sr:64px;padding:8px max(var(--sr),calc((100% - 1440px) / 2 + var(--sr)));background:var(--sec);border-top:1px solid var(--bd)}
.ftr .stats-row a.stats-link{display:inline-flex;align-items:center;min-height:44px;min-width:44px;color:var(--primary);font-size:16px;line-height:27px;text-decoration:underline;text-underline-position:from-font;white-space:nowrap}
@media (max-width:1359px){.stats-row{--sr:48px}}
@media (max-width:1099px){.stats-row{--sr:32px}}
@media (max-width:699px){.stats-row{--sr:16px}}
.sp{padding:48px 64px 64px}
.sp .in{padding-inline:0}
.sp-article{width:100%;max-width:800px;margin-inline:auto;display:flex;flex-direction:column;gap:24px}
.sp-article p{font-size:16px;line-height:27px;color:var(--fg)}
.sp-title{font-size:36px;line-height:46px;font-weight:700;color:var(--fg)}
.sp-state{display:flex;flex-wrap:wrap;align-items:baseline;gap:12px}
.sp-article .sp-lab{color:var(--mut)}
.sp-state strong{font-size:20px;line-height:29px;font-weight:500;color:var(--fg)}
.sp-h2{margin:0;font-size:20px;line-height:29px;font-weight:500;color:var(--fg)}
.sp-links{display:flex;flex-direction:column}
.sp-links .tl{font-size:16px;line-height:27px;font-weight:400;text-decoration:underline;text-underline-position:from-font;overflow-wrap:anywhere}
.sp-mail{display:inline-flex;align-items:center;min-height:44px}
.sp-btns{display:flex;flex-direction:column;gap:12px}
.sp-btns .stats-btn{flex:none;width:100%}
@media (min-width:700px){.sp-btns{flex-direction:row;gap:16px}.sp-btns .stats-btn{flex:1 1 0;width:auto}}
@media (max-width:1359px){.sp{padding-inline:48px}}
@media (max-width:1099px){.sp{padding-inline:32px}.sp-title{font-size:24px;line-height:33px;font-weight:500}}
@media (max-width:699px){.sp{padding:32px 16px 48px}}
/* V3-P1-B 0.3.6 (Figma 1220:25597): home hero H1 52/64 (>=1350), PAD 46/55, Compat 38/46, Mobile 30/36; balanced wrap. Home route only. */
[data-route="home"] .hero h1{font-size:52px;line-height:64px;text-wrap:balance}
@media (max-width:1349px){[data-route="home"] .hero h1{font-size:46px;line-height:55px}}
@media (max-width:1099px){[data-route="home"] .hero h1{font-size:38px;line-height:46px}}
@media (max-width:699px){[data-route="home"] .hero h1{font-size:30px;line-height:36px}}
/* footer / contact telephone link and footer privacy entry: 44px targets */
.tel{display:inline-flex;align-items:center;min-height:44px;min-width:44px}
.ftr .stats-row{gap:8px 32px;flex-wrap:wrap}
.ftr .stats-row a.privacy-link{display:inline-flex;align-items:center;min-height:44px;min-width:44px;color:var(--primary);font-size:16px;line-height:27px;text-decoration:underline;text-underline-position:from-font}

/* ===== V4.1 B2 (Figma 1240:26845 section): home hero + evidence strip, purchase / rail / article blocks, quote form, sticky bar =====
   Web font stays DengXian/Helvetica (Noto Sans SC was a Figma-only design font). */
.hero-note{margin:0;font-size:14px;line-height:22px;color:#fff}
.tl.tlw{color:#fff;text-decoration:underline;text-underline-offset:4px;padding-inline:8px}
.ev{background:var(--bg);border-bottom:1px solid var(--bd)}
.ev-grid{list-style:none;margin:0;padding:0;display:grid;grid-auto-flow:column;grid-auto-columns:minmax(0,1fr)}
.ev-cell a{display:flex;flex-direction:column;gap:8px;height:100%;padding:32px 24px;border-left:1px solid var(--bd);color:var(--fg);text-decoration:none}
.ev-cell:first-child a{border-left:0;padding-left:0}
.ev-cell strong{font-size:40px;line-height:48px;font-weight:700;color:var(--primary)}
.ev-cell span{font-size:14px;line-height:22px;color:var(--mut);overflow-wrap:anywhere}
.ev-cell a:hover strong{color:var(--accent)}
@media (max-width:1099px){.ev-cell a{padding:24px 16px}.ev-cell strong{font-size:32px;line-height:40px}}
@media (max-width:699px){.ev-grid{grid-auto-flow:row;grid-template-columns:repeat(2,minmax(0,1fr))}.ev-cell a{padding:20px 12px;border-left:0;border-top:1px solid var(--bd)}.ev-cell:nth-child(-n+2) a{border-top:0}.ev-cell:nth-child(2n) a{border-left:1px solid var(--bd)}.ev-cell:first-child a{padding-left:12px}.ev-cell strong{font-size:28px;line-height:36px}}
.pg-head{padding-block:48px 8px}
.pg-in{max-width:1100px;margin:0 auto}
.pg-head .in>*+*,.pg-sec .in>*+*{margin-top:16px}
.pg-answer{margin:0;padding:20px 24px;border-left:4px solid var(--accent);background:var(--sec);font-size:var(--lead);line-height:1.65;color:var(--fg)}
.pg-lead,.pg-p{margin:0;font-size:var(--body);line-height:1.75;color:var(--fg);overflow-wrap:anywhere}
.pg-lead{font-size:var(--lead)}
.pg-sec{padding-block:56px}
.pg-sec h2{margin:0}
.pg-quote{margin:0;padding:16px 20px;border-left:4px solid var(--primary);background:var(--sec);font-weight:500;line-height:1.7;overflow-wrap:anywhere}
.pg-sec.alt .pg-quote{background:#fff}
.pg-tw{overflow-x:auto;max-width:100%;border:1px solid var(--bd);border-radius:8px;background:#fff}
.pg-t{width:100%;min-width:520px;border-collapse:collapse;font-size:15px;line-height:24px}
.pg-t th,.pg-t td{padding:12px 16px;border-bottom:1px solid var(--bd);text-align:left;vertical-align:top;font-weight:400}
.pg-t thead th{background:var(--sec);font-weight:700;color:var(--primary)}
.pg-t tbody th{font-weight:700;color:var(--fg);white-space:nowrap}
.pg-t tr:last-child th,.pg-t tr:last-child td{border-bottom:0}
.pg-t a.tl{min-height:44px}
.pg-l{margin:0;padding-left:24px;display:flex;flex-direction:column;gap:8px;line-height:1.7}
.pg-l ul{margin:8px 0 0;padding-left:24px;display:flex;flex-direction:column;gap:4px;list-style:disc}
.pg-l>li>.pg-p{margin-top:8px}
.pg-acts{margin-top:20px}
.pg-sec .form{margin-top:24px;padding:24px;border:1px solid var(--bd);border-radius:12px;background:#fff}
.fpriv{margin-left:8px}
.form .acts{align-items:center}
.faq[id]{scroll-margin-top:16px}
.pg-sec[id]{scroll-margin-top:16px}
/* sticky bar: desktop = right column (208px gutter reserved on main + footer), touch/narrow = fixed bottom bar */
.sticky-cta{position:fixed;z-index:18;display:flex;background:#fff;box-sizing:border-box}
.sc-btn{display:flex;align-items:center;justify-content:center;box-sizing:border-box;min-height:48px;min-width:44px;padding:8px 12px;border:1px solid var(--primary);border-radius:8px;background:#fff;color:var(--primary);font:500 14px/1.3 var(--font);text-align:center;text-decoration:none}
.sc-short{display:none}
@media (max-width:380px){.sc-long{display:none}.sc-short{display:inline}}
.pg-h3{margin:8px 0 0;font-size:20px;line-height:1.4}
.sc-btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.sc-btn:hover{filter:brightness(.96)}
@media (min-width:1024px){
  .sticky-cta{right:16px;top:50%;transform:translateY(-50%);width:176px;flex-direction:column;gap:8px;padding:12px;border:1px solid var(--bd);border-radius:12px;box-shadow:0 4px 16px rgba(23,33,56,.12)}
  body:has([data-sticky]) main,body:has([data-sticky]) .ftr,body:has([data-sticky]) .stats-row{padding-right:208px}
}
@media (max-width:1023px){
  .sticky-cta{left:0;right:0;bottom:var(--stats-reserve,0px);flex-direction:row;gap:8px;padding:8px 8px calc(8px + env(safe-area-inset-bottom,0px));border-top:1px solid var(--bd);box-shadow:0 -2px 10px rgba(23,33,56,.1)}
  .sc-btn{flex:1 1 0;min-width:0;overflow-wrap:anywhere}
  html body:has([data-sticky]){padding-bottom:calc(var(--stats-reserve,0px) + var(--sticky-h,64px))}
  html:has([data-sticky]){scroll-padding-bottom:calc(var(--stats-reserve,0px) + var(--sticky-h,64px))} /* keyboard focus / scrollIntoView never ends under the bar */
  html body.sticky-hide:has([data-sticky]){padding-bottom:var(--stats-reserve,0px)}
  body.sticky-hide .sticky-cta{display:none}
}
ol.pg-l{list-style:decimal}ul.pg-l{list-style:disc}.pg-l li::marker{color:var(--primary)}
/* ===== V4.1 B2 fidelity correction (accepted Figma read-back: scrim black 55%, HeroText 900, rail image hero 544, PageHead #F2F4F7 pad 80/240, bar 208) ===== */
:root{--pad-r:var(--pad)}
@media (min-width:1024px){body:has([data-sticky]){--pad-r:240px}}
.hero.v41 .hero-bg::after{background:#000;opacity:.55}
.hero.v41 .hero-tx>*{max-width:900px}
.hero.v41 h1{line-height:1.2;text-wrap:wrap}
.hero.rail{min-height:544px}.hero.rail .hero-tx{padding-block:88px 56px}
@media (max-width:1359px){.hero.rail{min-height:520px}}@media (max-width:1099px){.hero.rail{min-height:500px}}@media (max-width:699px){.hero.rail{min-height:520px}.hero.rail .hero-tx{padding-block:64px 40px}}
body:has([data-sticky]) main:has(.pg-sec,.pg-head){padding-right:0}
.pg-in{max-width:none;margin:0;padding:0}
.pg-head{background:var(--sec);padding:64px var(--pad-r) 64px var(--pad)}
.pg-head.plain{background:#fff}
.pg-head h1{max-width:1000px}
.pg-lead{max-width:820px}
.pg-sec{padding:56px var(--pad-r) 56px var(--pad)}
.pg-sec.art{padding-block:40px}
.pg-sec .pg-p,.pg-sec .pg-quote,.pg-sec .pg-l,.pg-sec h2{max-width:820px}
.pg-sec.art .pg-p,.pg-sec.art .pg-quote,.pg-sec.art .pg-l,.pg-sec.art h2,.pg-head .pg-answer{max-width:760px}
.pg-head .pg-answer{padding:16px 20px;font-size:18px;line-height:29px;background:var(--sec);border-left:4px solid var(--accent)}
.pg-head.plain .pg-answer{background:var(--sec)}
.pg-faq .in{max-width:none;margin:0;padding:0 var(--pad-r) 0 var(--pad)}
.pg-faq{padding-inline:0}
.rel-cards{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px}
.rel-card{display:flex;flex-direction:column;gap:8px;padding:24px;background:#fff;border:1px solid var(--bd)}
.rel-card h3{margin:0;font-size:26px;line-height:42px;color:var(--primary)}
.rel-card p{margin:0;font-size:17px;line-height:27px;color:var(--mut)}
@media (min-width:1024px){.sticky-cta{width:208px;box-sizing:border-box;padding:12px;gap:8px;right:16px}}
@media (max-width:699px){
  .pg-head{padding:35px 20px}.pg-sec{padding:40px 20px}.pg-sec.art{padding-block:32px}
  .pg-tw{overflow:visible;border:0;background:none}
  .pg-t{min-width:0;display:block}.pg-t thead{display:none}
  .pg-t tbody,.pg-t tr,.pg-t th,.pg-t td{display:block}
  .pg-t tr{margin-bottom:12px;padding:12px 16px;border:1px solid var(--bd);border-radius:8px;background:#fff}
  .pg-t tbody th{border:0;padding:0 0 8px;white-space:normal}
  .pg-t td{border:0;padding:4px 0}.pg-t td::before{content:attr(data-label);display:block;font-size:13px;font-weight:700;color:var(--mut)}
}
.hero.rail h1{font-size:48px;line-height:58px}
@media (max-width:1099px){.hero.rail h1{font-size:38px;line-height:46px}}@media (max-width:699px){.hero.rail h1{font-size:30px;line-height:38px}}
.pg-t a.mail{display:inline-flex;align-items:center;min-height:44px}
.pg-head .pg-in>*+*{margin-top:16px}.pg-sec .pg-in>*+*{margin-top:20px}
/* HOME-H1-01 A2 (zh/en home only; owner-accepted Figma 1258:29791): the home sections' backgrounds reach the right viewport edge while the 208px sticky-card gutter stays as padding, so the original text positions/widths are unchanged; the card surface is 82% white (NOT element opacity: buttons/text stay opaque). Seam = the home-only main>.hero.v41:not(.rail); rail/other pages are untouched. */
body:has(main>.hero.v41:not(.rail)) .sticky-cta{background:rgba(255,255,255,.82)}
@media (min-width:1024px){
  body:has(main>.hero.v41:not(.rail)):has([data-sticky]) main{padding-right:0}
  body:has(main>.hero.v41:not(.rail)):has([data-sticky]) main>section{padding-right:208px}
}
/* FW-01 0.3.13 (supersedes the HOME-H1-01 home-only seam above; owner-accepted Figma 1258:29791 extended to every sticky page): section/stats-row backgrounds reach the right viewport edge, the 208px card gutter stays as section padding (pg-head/pg-sec/pg-faq keep their own 240px, rail hero keeps its width), .ftr/.ftr-in untouched, card SURFACE (not element opacity) is 82% white. */
.sticky-cta{background:rgba(255,255,255,.82)}
@media (min-width:1024px){
  body:has([data-sticky]) main{padding-right:0}
  body:has([data-sticky]) main>section:not(.pg-head,.pg-sec,.pg-faq,.hero.rail){padding-right:208px}
  body:has([data-sticky]) .stats-row{margin-right:-208px}
}
/* PH-01 0.3.14 */
:root{--header-panorama-h:680px}
@media(max-width:1359px){:root{--header-panorama-h:620px}}
@media(max-width:1099px){:root{--header-panorama-h:600px}}
@media(max-width:699px){:root{--header-panorama-h:660px}}
.hero,.hero.rail{min-height:var(--header-panorama-h)}
main>.strip{height:var(--header-panorama-h)}
[data-route='about'] .hero-bg::after{background:#000;opacity:.55}
@media(min-width:1024px){body:has([data-sticky]) main>.hero.rail{padding-right:208px}}
/* /PH-01 */