/* HAIXU v2 – clean light DTC-style theme */
:root{--ink:#0d1b2a;--ink-2:#334155;--muted:#5f6b7a;--line:#e7eaee;--bg:#fff;--soft:#f5f6f8;--soft-2:#eef1f5;
--blue:#0a5ce6;--blue-d:#0848b6;--blue-t:#eaf1fe;--orange:#f08c00;--orange-d:#d47a00;--orange-t:#fff3e0;--wa:#25D366;
--r:20px;--r-s:14px;--sh-s:0 1px 2px rgba(13,27,42,.05),0 2px 8px rgba(13,27,42,.04);--sh:0 2px 6px rgba(13,27,42,.04),0 18px 40px -12px rgba(13,27,42,.14);
--font:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);color:var(--ink-2);line-height:1.6;font-size:16px;background:var(--bg);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img{max-width:100%;height:auto;display:block}a{color:var(--blue);text-decoration:none}a:hover{color:var(--blue-d)}
h1,h2,h3,h4{color:var(--ink);line-height:1.15;margin:0 0 .5em;letter-spacing:-.02em;font-weight:700}
h1{font-size:clamp(2.2rem,4.4vw,3.4rem);font-weight:800;letter-spacing:-.035em;line-height:1.06}
h2{font-size:clamp(1.7rem,3vw,2.5rem);font-weight:800;letter-spacing:-.03em}h3{font-size:1.18rem}
p{margin:0 0 1em}.container{width:min(1200px,100% - 40px);margin-inline:auto}
.skip{position:absolute;left:-999px}.skip:focus{left:10px;top:10px;background:#fff;padding:8px;z-index:99}
/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.86);backdrop-filter:saturate(180%) blur(14px);-webkit-backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid rgba(13,27,42,.07)}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand img{height:40px;width:auto}
.menu{display:flex;gap:30px;align-items:center;list-style:none;margin:0;padding:0}
.menu a{color:var(--ink);font-weight:500;font-size:.95rem}.menu a:hover,.menu a[aria-current=page]{color:var(--blue)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 24px;border-radius:999px;font-weight:600;font-size:.96rem;border:1.5px solid transparent;cursor:pointer;transition:background .18s,color .18s,border-color .18s,box-shadow .18s,transform .18s;font-family:inherit;line-height:1.2;white-space:nowrap}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--orange);color:#fff;box-shadow:0 6px 16px -6px rgba(240,140,0,.55)}.btn-primary:hover{background:var(--orange-d);color:#fff}
.btn-outline{border-color:rgba(13,27,42,.22);color:var(--ink);background:#fff}.btn-outline:hover{border-color:var(--ink);color:var(--ink)}
.btn-wa{background:var(--wa);color:#fff;box-shadow:0 6px 16px -6px rgba(37,211,102,.55)}.btn-wa:hover{background:#1ebe5b;color:#fff}
.btn-light{background:#fff;color:var(--ink)}
.btn svg{width:18px;height:18px;flex:none}
.menu .btn{padding:10px 20px;color:#fff;font-size:.92rem}
.nav-toggle{display:none;background:none;border:0;padding:8px;cursor:pointer}
.nav-toggle span{display:block;width:22px;height:2px;border-radius:2px;background:var(--ink);margin:5px 0;transition:.2s}
/* hero */
.hero{position:relative;overflow:hidden;padding:0;background:
 radial-gradient(900px 520px at 88% 8%,rgba(240,140,0,.13),transparent 60%),
 radial-gradient(800px 600px at 8% 100%,rgba(10,92,230,.08),transparent 60%),
 linear-gradient(180deg,#f7f8fa 0%,#eef2f7 100%)}
.hero .container{display:grid;grid-template-columns:1.12fr .88fr;gap:48px;align-items:center;padding:88px 0 96px}
.hero h1 em{font-style:normal;background:linear-gradient(90deg,var(--orange) 0%,#e86a00 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{font-size:1.16rem;color:var(--muted);max-width:560px;line-height:1.65}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;font-weight:700;color:var(--blue);margin-bottom:16px}
.hero .eyebrow{background:#fff;border:1px solid var(--line);padding:7px 14px;border-radius:999px;letter-spacing:.08em;box-shadow:var(--sh-s)}
.hero .eyebrow::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--orange)}
.hero .ctas{display:flex;gap:12px;flex-wrap:wrap;margin:30px 0 30px}
.hero-facts{display:flex;flex-wrap:wrap;gap:10px 24px;list-style:none;padding:0;margin:0;color:var(--ink-2);font-size:.92rem;font-weight:500}
.hero-facts li{display:flex;align-items:center;gap:8px}
.hero-facts li::before{content:"";width:18px;height:18px;flex:none;border-radius:50%;background:var(--blue-t) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230a5ce6' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 12 4 4 8-8'/%3E%3C/svg%3E") center/12px no-repeat}
.hero-art{position:relative}
.hero-art .stage{position:relative;aspect-ratio:1/1;max-width:540px;margin-left:auto;border-radius:32px;background:radial-gradient(70% 60% at 60% 40%,#fff 0%,#f3f5f8 70%,#e9edf2 100%);box-shadow:inset 0 0 0 1px rgba(13,27,42,.05),var(--sh)}
.hero-art .stage::after{content:"";position:absolute;left:18%;right:8%;bottom:9%;height:7%;border-radius:50%;background:radial-gradient(closest-side,rgba(13,27,42,.18),transparent);z-index:0}
.hero-art .p{position:absolute;margin:0}
.hero-art .p span{display:inline-block;white-space:nowrap;font-size:.78rem;color:var(--ink);font-weight:600;background:#fff;border:1px solid var(--line);border-radius:999px;padding:5px 12px;box-shadow:var(--sh-s)}
.hero-art .p2{right:7%;top:6%;width:56%;text-align:center}
.hero-art .p2 img{mix-blend-mode:multiply;width:100%;max-height:440px;object-fit:contain}
.hero-art .p2 span{margin-top:-6px}
.hero-art .p1{left:-6%;bottom:7%;width:40%;z-index:2;background:#fff;border-radius:22px;padding:10px;box-shadow:0 24px 50px -16px rgba(13,27,42,.35)}
.hero-art .p1 img{border-radius:14px;aspect-ratio:1/1;object-fit:cover;width:100%}
.hero-art .p1 span{position:absolute;left:50%;transform:translateX(-50%);bottom:14px}
/* sections */
section{padding:96px 0}.section-alt{background:var(--soft)}
.section-head{max-width:720px;margin-bottom:48px}.section-head.center{text-align:center;margin-inline:auto}
.section-head p{color:var(--muted);font-size:1.08rem}
.strip{background:#fff;border-bottom:1px solid var(--line);padding:30px 0}
.strip ul{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;list-style:none;margin:0;padding:0}
.strip li{display:flex;gap:14px;align-items:center;font-size:.9rem;color:var(--muted);line-height:1.45}.strip b{display:block;color:var(--ink);font-size:.98rem;font-weight:600;margin-bottom:2px}
.strip .ic{flex:none;width:44px;height:44px;border-radius:50%;background:var(--orange-t);display:grid;place-items:center;color:var(--orange-d)}
.ic svg{width:22px;height:22px}
.grid{display:grid;gap:24px}.g3{grid-template-columns:repeat(3,1fr)}.g2{grid-template-columns:repeat(2,1fr)}.g4{grid-template-columns:repeat(4,1fr)}
/* product tiles: consistent ratio, light backdrop; white-bg cut-outs blend into the tile, photos are framed */
.img,.pimg,.fimg{position:relative;background:linear-gradient(180deg,#f7f8fa 0%,#eef1f5 100%);display:grid;place-items:center;overflow:hidden}
.cut img{mix-blend-mode:multiply;object-fit:contain}
.img.photo,.pimg.photo,.fimg.photo{padding:0}
.photo img{position:absolute;inset:0;width:100%!important;height:100%!important;max-width:none!important;max-height:none!important;object-fit:cover}
.cat{background:#fff;border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column;transition:box-shadow .25s,transform .25s;color:inherit;box-shadow:var(--sh-s);border:1px solid rgba(13,27,42,.06)}
.cat:hover{box-shadow:var(--sh);transform:translateY(-4px);color:inherit}
.cat .img{aspect-ratio:4/3;padding:28px;border-radius:calc(var(--r) - 6px);margin:8px 8px 0}
.cat .img img{max-height:100%;max-width:100%;width:auto;height:auto;transition:transform .35s}
.cat:hover .img img{transform:scale(1.04)}
.cat .body{padding:22px 24px 26px;display:flex;flex-direction:column;flex:1}
.cat .range{font-size:.76rem;font-weight:700;color:var(--orange-d);letter-spacing:.08em;text-transform:uppercase;margin-bottom:6px}
.cat h3{font-size:1.25rem}
.cat p{color:var(--muted);font-size:.95rem}.cat .more{margin-top:auto;font-weight:600;color:var(--ink);display:inline-flex;gap:6px}
.cat:hover .more{color:var(--blue)}
.card{background:#fff;border-radius:var(--r);padding:30px;box-shadow:var(--sh-s);border:1px solid rgba(13,27,42,.06)}
section:not(.section-alt) .card{background:var(--soft);box-shadow:none;border-color:transparent}
.card .ic{width:48px;height:48px;border-radius:14px;background:var(--blue-t);color:var(--blue);display:grid;place-items:center;margin-bottom:18px}
section:not(.section-alt) .card .ic{background:#fff}
.card h3{font-size:1.12rem;margin-bottom:8px}
.card p{color:var(--muted);font-size:.95rem;margin:0}
.steps{counter-reset:s;list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(5,1fr);gap:16px;position:relative}
.steps li{background:#fff;border-radius:var(--r-s);padding:24px 20px;position:relative;box-shadow:var(--sh-s);border:1px solid rgba(13,27,42,.06)}
.steps li::before{counter-increment:s;content:"0" counter(s);display:block;font-size:.8rem;font-weight:700;letter-spacing:.1em;color:var(--orange-d);margin-bottom:14px;padding-bottom:12px;border-bottom:2px solid var(--orange-t)}
.steps h4{margin-bottom:6px;font-size:1.02rem}.steps p{font-size:.9rem;color:var(--muted);margin:0}
/* one dark premium band */
.cta-band{position:relative;overflow:hidden;background:radial-gradient(600px 300px at 90% 0%,rgba(240,140,0,.28),transparent 65%),radial-gradient(500px 300px at 0% 100%,rgba(10,92,230,.30),transparent 65%),#0d1b2a;color:#fff;border-radius:28px;padding:56px;display:flex;justify-content:space-between;align-items:center;gap:28px;flex-wrap:wrap}
.cta-band h2{color:#fff;margin-bottom:8px}.cta-band p{color:#b8c3d1;margin:0;max-width:560px}.cta-band .ctas{display:flex;gap:12px;flex-wrap:wrap}
.page-hero{background:radial-gradient(700px 360px at 92% 0%,rgba(240,140,0,.10),transparent 60%),linear-gradient(180deg,#f7f8fa,#eef2f7);padding:64px 0 56px;border-bottom:1px solid var(--line)}
.page-hero h1{font-size:clamp(2rem,3.8vw,3rem)}.page-hero p{color:var(--muted);max-width:740px;font-size:1.1rem;margin:0}
.crumbs{font-size:.85rem;color:var(--muted);margin-bottom:14px}.crumbs a{color:var(--muted)}.crumbs a:hover{color:var(--blue)}
/* products */
.subnav{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:40px;padding:6px;background:var(--soft);border-radius:999px;width:fit-content;max-width:100%}
.subnav a{padding:9px 18px;border-radius:999px;color:var(--ink);font-weight:500;font-size:.9rem}.subnav a:hover{background:#fff;box-shadow:var(--sh-s);color:var(--ink)}
.line-head{padding:8px 0 0;margin:28px 0 28px;border-top:1px solid var(--line);padding-top:36px}
.line-head:first-of-type{border-top:0;padding-top:0}
.line-head h2{margin-bottom:6px;font-size:clamp(1.4rem,2.4vw,1.85rem);display:flex;flex-wrap:wrap;align-items:center;gap:6px 12px}
.line-head h2 small{color:var(--orange-d);background:var(--orange-t);font-size:.78rem;font-weight:600;letter-spacing:0;padding:4px 12px;border-radius:999px}
.line-head p{margin:0;color:var(--muted);max-width:780px}
.prod{display:grid;grid-template-columns:400px 1fr;gap:40px;border-radius:var(--r);padding:20px;margin-bottom:28px;background:#fff;scroll-margin-top:90px;box-shadow:var(--sh-s);border:1px solid rgba(13,27,42,.07);align-items:start}
.prod .pimg{border-radius:var(--r-s);aspect-ratio:1/1;padding:30px;position:sticky;top:90px}
.prod .pimg img{max-height:100%;max-width:100%;width:auto;height:auto}
.prod>div:last-child{padding:12px 10px 8px 0}
.prod h3{font-size:1.6rem;margin-bottom:4px;letter-spacing:-.025em}.prod .kw{color:var(--orange-d);font-weight:600;margin-bottom:10px}
.prod .tag{color:var(--muted);margin-bottom:16px}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin:0 0 18px;padding:0;list-style:none}
.chips li{background:var(--soft-2);color:var(--ink-2);border-radius:999px;padding:4px 12px;font-size:.78rem;font-weight:600}.chips li.o{background:var(--orange-t);color:#a35d00}
table.spec{width:100%;border-collapse:collapse;font-size:.92rem;margin-bottom:20px}
table.spec th,table.spec td{text-align:left;padding:10px 0;border-bottom:1px solid var(--line);vertical-align:top}
table.spec td{color:var(--ink);font-weight:500;padding-left:12px}
table.spec th{width:36%;color:var(--muted);font-weight:500}
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-s);margin-bottom:32px;background:#fff}
table.cmp{width:100%;border-collapse:collapse;font-size:.88rem;min-width:860px}
table.cmp th{background:var(--soft);color:var(--ink);text-align:left;padding:12px;font-weight:600;border-bottom:1px solid var(--line)}
table.cmp td{padding:11px 12px;border-bottom:1px solid var(--line)}table.cmp td:first-child{font-weight:600;color:var(--ink)}
table.cmp tbody tr:not(.grp):hover td{background:#fafbfc}
table.cmp tr.grp td{background:#fff;color:var(--orange-d);font-weight:700;font-size:.74rem;letter-spacing:.1em;text-transform:uppercase;padding-top:18px}
.st-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:48px}
.st-grid figure{margin:0;text-align:left}
.st-grid .fimg{aspect-ratio:4/5;border-radius:var(--r-s);padding:22px;margin-bottom:12px}
.st-grid .fimg img{max-height:100%;max-width:100%;width:auto;height:auto}
.st-grid figcaption{font-weight:600;color:var(--ink);font-size:.9rem;line-height:1.4}.st-grid figcaption span{display:block;font-weight:400;color:var(--muted);font-size:.84rem;margin-top:2px}
.note{font-size:.85rem;color:var(--muted)}
ul.ticks{list-style:none;padding:0;margin:0 0 1em}ul.ticks li{padding-left:30px;position:relative;margin-bottom:10px}
ul.ticks li::before{content:"";position:absolute;left:0;top:.2em;width:20px;height:20px;border-radius:50%;background:var(--orange-t) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23d47a00' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 12 4 4 8-8'/%3E%3C/svg%3E") center/12px no-repeat}
.downloads{display:flex;gap:12px;flex-wrap:wrap}
/* about */
.split{display:grid;grid-template-columns:1.1fr .9fr;gap:64px;align-items:center}
.panel{background:var(--soft);border-radius:28px;padding:40px}
.faq details{border-bottom:1px solid var(--line);padding:20px 4px;background:#fff}
.faq details:first-child{border-top:1px solid var(--line)}
.faq summary{font-weight:600;color:var(--ink);cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:16px;font-size:1.04rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:1.4rem;line-height:1;color:var(--muted);transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{margin:12px 0 0;color:var(--muted)}
/* contact */
.contact-grid{display:grid;grid-template-columns:1.3fr .7fr;gap:40px;align-items:start}
form.inq{background:#fff;border:1px solid rgba(13,27,42,.07);border-radius:24px;padding:36px;box-shadow:var(--sh)}
.fields{display:grid;grid-template-columns:1fr 1fr;gap:18px}.fields .full{grid-column:1/-1}
label{display:block;font-weight:600;font-size:.88rem;color:var(--ink);margin-bottom:7px}label .req{color:#d93025}
input,select,textarea{width:100%;padding:13px 15px;border:1px solid #d9dee5;border-radius:12px;font:inherit;font-size:.97rem;background:#fafbfc;color:var(--ink);transition:border-color .15s,box-shadow .15s,background .15s}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--blue);background:#fff;box-shadow:0 0 0 4px rgba(10,92,230,.12)}
textarea{min-height:140px;resize:vertical}
.form-actions{display:flex;gap:12px;flex-wrap:wrap;align-items:center;margin-top:24px}
.form-note{font-size:.84rem;color:var(--muted);margin-top:16px}
.hp{position:absolute!important;left:-5000px!important}
.ccard{display:flex;gap:16px;align-items:flex-start;padding:22px;border-radius:18px;margin-bottom:14px;background:var(--soft)}
.ccard .ic{flex:none;width:44px;height:44px;border-radius:12px;display:grid;place-items:center;background:#fff;color:var(--blue);box-shadow:var(--sh-s)}
.ccard.wa{background:#eafaf0}.ccard.wa .ic{color:#128C4A}.ccard h4{margin:0 0 4px;font-size:1rem}.ccard p{margin:0;color:var(--muted);font-size:.93rem}
/* footer */
.site-footer{background:var(--soft);color:var(--muted);padding:72px 0 28px;font-size:.92rem;border-top:1px solid var(--line)}
.site-footer .cols{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
.site-footer h4{color:var(--ink);font-size:.82rem;text-transform:uppercase;letter-spacing:.1em;margin-bottom:16px}.site-footer ul{list-style:none;padding:0;margin:0}.site-footer li{margin-bottom:10px}
.site-footer a{color:var(--ink-2)}.site-footer a:hover{color:var(--blue)}.site-footer .logo img{height:40px;width:auto;margin-bottom:18px}
.site-footer .bottom{border-top:1px solid #dde2e8;margin-top:48px;padding-top:22px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:.82rem}
/* floating whatsapp */
.wa-float{position:fixed;right:20px;bottom:20px;z-index:60;width:58px;height:58px;border-radius:50%;background:var(--wa);display:grid;place-items:center;box-shadow:0 10px 26px -6px rgba(18,140,74,.55);transition:.2s}
.wa-float:hover{transform:scale(1.07)}.wa-float svg{width:30px;height:30px;fill:#fff}
.wa-float .lbl{display:none}
.err404{text-align:center;padding:120px 0}.err404 .big{font-size:6rem;font-weight:800;letter-spacing:-.04em;color:var(--orange);line-height:1;margin-bottom:12px}
.err404 p{color:var(--muted)}
/* responsive */
@media (max-width:1100px){.prod{grid-template-columns:340px 1fr;gap:28px}.hero-art .p1{left:-2%}}
@media (max-width:1000px){.g4,.steps{grid-template-columns:repeat(2,1fr)}.strip ul{grid-template-columns:repeat(2,1fr)}.site-footer .cols{grid-template-columns:1fr 1fr}.st-grid{grid-template-columns:repeat(3,1fr)}}
@media (max-width:860px){
 .nav-toggle{display:block}.menu{position:absolute;top:68px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;gap:0;padding:8px 20px 20px;border-bottom:1px solid var(--line);display:none;box-shadow:0 18px 30px -12px rgba(13,27,42,.15)}
 .menu.open{display:flex}.menu li a{display:block;padding:14px 0;border-bottom:1px solid var(--line)}.menu li .btn{margin-top:14px;justify-content:center;border:0;display:flex}
 .hero .container,.split,.contact-grid{grid-template-columns:1fr}.hero .container{padding:48px 0 56px;gap:36px}
 .hero-art .stage{max-width:440px;margin:0 auto;border-radius:26px}.hero-art .p1{left:4%;width:42%}.hero-art .p2{right:4%;width:58%}.hero-art .p2 span{transform:translateX(12%)}.hero-art .p span{font-size:.7rem;padding:4px 10px}
 .g3,.g2{grid-template-columns:1fr}.prod{grid-template-columns:1fr;gap:8px;padding:14px}.prod .pimg{position:static;aspect-ratio:4/3}.prod>div:last-child{padding:12px 6px 6px}
 .st-grid{grid-template-columns:repeat(2,1fr);gap:14px}
 section{padding:64px 0}.cta-band{padding:36px 28px;border-radius:24px}.split{gap:32px}.hero p.lead{font-size:1.04rem}.hero-facts{font-size:.88rem}}
@media (max-width:560px){.fields{grid-template-columns:1fr}.g4,.steps,.strip ul{grid-template-columns:1fr}.site-footer .cols{grid-template-columns:1fr}.brand img{height:34px}form.inq{padding:22px;border-radius:20px}table.spec th{width:42%}
 .hero .ctas .btn,.cta-band .ctas .btn{flex:1 1 100%}.cta-band .ctas{width:100%}.panel{padding:28px}.subnav{border-radius:999px;flex-wrap:nowrap;overflow-x:auto;width:100%;scrollbar-width:none;-webkit-overflow-scrolling:touch}.subnav::-webkit-scrollbar{display:none}.subnav a{flex:none}.hero .eyebrow{font-size:.68rem;letter-spacing:.04em;padding:6px 12px}.strip{padding:24px 0}.cat .img{padding:20px}}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
/* v3: language switcher + Chinese typography */
.nav-right{display:flex;align-items:center;gap:22px}
.lang-switch{display:flex;align-items:center;gap:6px;font-size:.86rem;font-weight:600;white-space:nowrap;padding-left:22px;border-left:1px solid var(--line)}
.lang-switch a{color:var(--muted)}.lang-switch a:hover{color:var(--blue)}
.lang-switch .cur{color:var(--ink)}.lang-switch .sep{color:#c3cad3;font-weight:400}
@media (max-width:860px){.nav-right{gap:12px}.lang-switch{padding-left:0;border-left:0}}
:root{--font-zh:Inter,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC","Noto Sans CJK SC","Source Han Sans SC",sans-serif}
html:lang(zh) body,html:lang(zh) input,html:lang(zh) select,html:lang(zh) textarea,html:lang(zh) button{font-family:var(--font-zh)}
html:lang(zh) body{line-height:1.75}
html:lang(zh) h1,html:lang(zh) h2,html:lang(zh) h3,html:lang(zh) h4{letter-spacing:.01em;line-height:1.3}
html:lang(zh) h1{font-weight:700;letter-spacing:.02em;line-height:1.24;font-size:clamp(2rem,4vw,3.1rem)}
html:lang(zh) h2{font-weight:700;letter-spacing:.02em;line-height:1.3}
html:lang(zh) .page-hero h1{font-size:clamp(1.8rem,3.4vw,2.6rem)}
html:lang(zh) .prod h3{letter-spacing:0}
html:lang(zh) .eyebrow,html:lang(zh) .cat .range,html:lang(zh) table.cmp tr.grp td,html:lang(zh) .site-footer h4{letter-spacing:.06em;text-transform:none}
html:lang(zh) .hero .eyebrow{letter-spacing:.04em}
html:lang(zh) .hero p.lead{line-height:1.85}
html:lang(zh) .faq summary{font-size:1rem}
@media (max-width:560px){html:lang(zh) .hero h1 br{display:none}}
html:lang(zh) .hero h1 em{white-space:nowrap}