.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.language-control{flex-shrink:0;margin-left:auto}.language-control select{font:600 12px system-ui;color:#153d2c;background:#fff;border:1px solid #bdcbbd;border-radius:18px;padding:9px 26px 9px 12px;min-height:42px;cursor:pointer}.navlinks{gap:15px}nav{gap:16px}.hero-wechat{width:100%;font-size:13px;color:#d5e2ca;padding:8px 0}.contact-channels{padding-bottom:65px;margin-bottom:65px;border-bottom:1px solid #ffffff25;scroll-margin-top:100px}.contact-channels h2{font-size:clamp(34px,4vw,56px);line-height:1.1;margin:18px 0}.channel-intro{max-width:720px!important}.channel-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:30px}.channel-card{display:flex;align-items:center;gap:24px;background:#f6f7ef;color:#15382b;border-radius:24px;padding:28px}.channel-copy{flex:1;min-width:0}.channel-label{font-size:10px;letter-spacing:.12em;font-weight:800;color:#4c6b43}.channel-copy h3{font-size:23px;line-height:1.3;margin:10px 0 20px}.channel-copy p{color:#586b5f;font-size:12px;line-height:1.65;margin:15px 0}.channel-phone,.channel-download{display:block;margin-top:14px;font-size:13px;font-weight:700;text-decoration:underline;text-underline-offset:4px}.qr-group{flex:0 0 164px;text-align:center}.qr-button{width:164px;height:164px;background:white;border:0;padding:6px;border-radius:10px;cursor:zoom-in;display:block}.qr-button>img{width:100%;height:100%;object-fit:contain}.qr-crop{display:block;position:relative;width:100%;aspect-ratio:1;overflow:hidden;background:white}.qr-crop img{position:absolute;width:210.857%;max-width:none;height:auto;left:-55.429%;top:-179.143%}.qr-text{border:0;background:none;color:#365e40;text-decoration:underline;font-size:11px;padding:10px 0;cursor:pointer}.channel-email{display:flex;flex-wrap:wrap;gap:10px 18px;font-size:14px;margin-top:25px;color:#c5d7c9}.channel-email a{text-decoration:underline;text-underline-offset:4px}.channel-email a:last-child{margin-left:auto}#qr-dialog{border:0;border-radius:24px;padding:32px;width:min(92vw,430px);color:#15382b;box-shadow:0 20px 90px #0005}#qr-dialog::backdrop{background:#031b14bb;backdrop-filter:blur(4px)}#qr-dialog h2{font-size:24px;margin:0 25px 20px 0}#qr-dialog p{font-size:13px;line-height:1.6;color:#52685a}.qr-close{position:absolute;right:16px;top:12px;font-size:30px;background:none;border:0;color:#284d3b;cursor:pointer;min-width:44px;min-height:44px}#qr-display{background:#fff}#qr-display>img{width:100%;height:auto}#qr-save{margin-top:10px}html[lang="zh-Hans"] body{font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif}html[lang="zh-Hans"] h1,html[lang="zh-Hans"] h2,html[lang="zh-Hans"] h3{letter-spacing:0;line-height:1.25}html[lang="zh-Hans"] .hero h1{font-size:clamp(40px,5vw,70px)}html[lang="zh-Hans"] .display{font-size:clamp(36px,4.6vw,64px)}html[lang="zh-Hans"] .eyebrow{letter-spacing:.06em}html[lang="zh-Hans"] .material-photo:after{content:"椰壳生物炭 · 多孔碳原料"}html[lang="zh-Hans"] .evidence-title{line-height:1.25;letter-spacing:0}html[lang="zh-Hans"] .contact h2{font-size:clamp(38px,4vw,58px)}html[lang="zh-Hans"] .contact-channels h2{font-size:clamp(32px,4vw,50px)}
@media(max-width:1150px){.channel-card{flex-direction:column;align-items:stretch}.qr-group{flex:auto;align-self:center}.navlinks{gap:12px}.nav-cta{font-size:10px;padding:12px}}
@media(max-width:620px){.nav-cta{display:none}.brand-logo{width:125px!important}.language-control select{max-width:112px;font-size:12px}.language-control{margin-left:auto}nav{gap:10px}.channel-grid{grid-template-columns:1fr}.channel-card{padding:24px}.channel-copy h3{font-size:24px}.channel-copy p{font-size:14px}.qr-group{margin-top:5px}.qr-button{width:190px;height:190px}.channel-email{display:block;overflow-wrap:anywhere}.channel-email a{display:block;margin-top:10px}.channel-email a:last-child{margin-left:0}.contact-channels{padding-bottom:40px;margin-bottom:45px}.floating-enquiry{font-size:12px;padding:12px 18px}html[lang="zh-Hans"] .hero h1{font-size:42px}html[lang="zh-Hans"] .material h2,html[lang="zh-Hans"] .about-copy h2{font-size:37px}.channel-intro{font-size:15px!important}}
/* Jump directly to contact and language destinations without a long page animation. */
html{scroll-behavior:auto}

.hero-wechat{width:auto;background:transparent;cursor:pointer;padding:13px 19px;font:inherit;font-size:12px;font-weight:900}.floating-contacts{position:fixed;z-index:45;right:22px;bottom:20px;display:flex;flex-direction:column;align-items:stretch;gap:8px}.floating-chat{display:flex;align-items:center;justify-content:center;min-height:44px;border:1px solid #b0cb98;border-radius:24px;padding:12px 20px;background:#c9e87b;color:#12382a;font:800 13px system-ui;box-shadow:0 5px 20px #001b1530;cursor:pointer}.floating-chat.wechat{background:#fff;color:#174a35}.floating-chat:hover{filter:brightness(.95)}footer{padding-bottom:140px}.form-help{padding-bottom:20px}@media(max-width:620px){.floating-contacts{right:12px;bottom:12px;gap:6px}.floating-chat{min-height:42px;padding:10px 14px;font-size:12px}.hero-wechat{width:auto;font-size:12px}#contact .contact-grid{padding-bottom:50px}}

/* Keep the native accessible language menu, with an inset custom chevron. */
.language-control{position:relative}.language-control:after{content:"";position:absolute;right:17px;top:50%;width:7px;height:7px;border-right:1.5px solid #153d2c;border-bottom:1.5px solid #153d2c;transform:translateY(-70%) rotate(45deg);pointer-events:none}.language-control select{appearance:none;-webkit-appearance:none;padding:10px 39px 10px 14px;min-width:137px;max-width:none}.language-control select:focus-visible{outline:2px solid #507636;outline-offset:3px}
html[lang="en"] .hero h1{font-size:clamp(38px,4.4vw,65px);line-height:1.05;letter-spacing:-.045em}
@media(max-width:620px){.language-control select{min-width:132px;max-width:none;font-size:12px}html[lang="en"] .hero h1{font-size:clamp(30px,8.2vw,48px)}}