:root{--blue:#357acb;--blue2:#1b5da3;--blue3:#173b61;--navy:#152e49;--dark:#20252d;--muted:#6f7e8c;--light:#f5f9fd;--teal:#4bb2b1;--border:#dce6f0;--shadow:0 16px 42px rgba(31,80,123,.09)}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:100px}
body{margin:0;color:var(--navy);font-family:'DM Sans',Arial,sans-serif;font-size:15px;line-height:1.7;background:white}
button,input{font:inherit}
button{cursor:pointer}
a{text-decoration:none;color:inherit}
.container{max-width:1260px;margin:0 auto;padding:0 30px}
.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}
.top-strip{height:37px;background:#f1f2f4;color:#77808b;font-size:12px;letter-spacing:.015em}
.top-strip-inner{height:100%;display:flex;justify-content:space-between;align-items:center}
.top-strip-inner>span{font-size:10px;letter-spacing:.18em;font-weight:700}
.top-strip-inner>div{display:flex;gap:18px;align-items:center}
.top-strip a:hover{color:var(--blue)}
.tiny-separator{height:12px;width:1px;background:#d9dce0}
.main-header{height:103px;background:#fff;z-index:30;position:relative}
.header-inner{height:100%;display:flex;justify-content:space-between;align-items:center;gap:36px}
.brand{display:flex;align-items:center;gap:11px;min-width:235px}
.brand-mark{width:64px;height:64px;display:grid;place-items:center;color:#2f80c7}
.brand-mark svg{width:58px;filter:drop-shadow(1px 2px 2px #d7eefa)}
.brand-name{display:flex;flex-direction:column;justify-content:center;line-height:1;gap:4px;color:#1d5f9f}
.brand-name strong{font-size:39px;font-weight:800;letter-spacing:-.08em;font-family:Manrope,sans-serif}
.brand-name small{font-size:10px;letter-spacing:.28em;font-weight:800;margin-left:3px}
.brand{height:100%;min-width:208px;flex-direction:column;align-items:flex-start;justify-content:center;gap:0}
.official-logo{display:block;width:176px;height:77px;object-fit:contain;object-position:left center;mix-blend-mode:multiply}
.brand-caption{font-size:9px;color:#2885b9;font-weight:800;letter-spacing:.16em;margin:-5px 0 2px 24px;line-height:1}
.search-box{height:45px;display:flex;width:min(520px,48%);border:2px solid var(--blue);border-radius:5px;overflow:hidden}
.search-box input{width:100%;min-width:0;border:0;padding:0 17px;color:#465c72;outline:0;background:white;font-size:13px}
.search-box input::placeholder{color:#a8b4c1}
.search-box button{display:flex;align-items:center;justify-content:center;gap:6px;flex-shrink:0;width:121px;background:var(--blue);color:#fff;border:0;font-weight:700;font-size:12px;letter-spacing:.04em;transition:background .2s}
.search-box button:hover{background:var(--blue2)}
.search-box button svg{width:17px;height:17px}
.menu-toggle{display:none;border:0;background:transparent;padding:8px;flex-direction:column;gap:5px}
.menu-toggle span{width:24px;height:2px;background:var(--blue)}
.language-switch{display:flex;align-items:center;gap:4px;flex-shrink:0;padding:3px;background:#edf5fc;border:1px solid #d7e7f6;border-radius:6px}
.language-switch button{background:transparent;border:0;border-radius:4px;color:#577f9e;padding:7px 10px;font-size:12px;line-height:1.2;font-weight:800;white-space:nowrap;transition:background .2s,color .2s}
.language-switch button.active{background:#347aca;color:#fff;box-shadow:0 2px 7px rgba(38,107,168,.16)}
.language-switch span{font-size:11px;color:#b4c9dd}
.language-switch button:focus-visible{outline:2px solid #205c9b;outline-offset:2px}
.nav-bar{height:53px;background:var(--blue);color:#fff;position:relative;z-index:20}
.nav-inner{display:flex;align-items:stretch;height:100%;gap:0}
.nav-inner>a{padding:0 19px;display:flex;align-items:center;font-size:14px;white-space:nowrap;transition:background .2s}
.nav-inner>a:not(.nav-highlight):hover{background:rgba(14,58,109,.19)}
.nav-inner .nav-highlight{background:#1d5f9c;padding:0 23px;margin-right:17px;font-size:12px;letter-spacing:.08em;font-weight:700}
.nav-inner .nav-highlight:hover{background:#174c81}
.hamburger-small{font-size:25px;margin-right:12px;font-weight:300;line-height:1}
.down-caret{font-size:18px;margin-left:5px;margin-top:-3px}
.hero-section{height:646px;position:relative;overflow:hidden;background:#f0f7ff}
.hero-image{position:absolute;inset:23px 0 0;background-image:linear-gradient(90deg,rgba(244,251,255,.95) 0%,rgba(244,251,255,.82) 22%,rgba(244,251,255,.42) 47%,rgba(244,251,255,0) 76%),url('assets/chemistry-hero.png');background-position:center center;background-size:cover}
.hero-content{position:relative;z-index:2;height:100%;display:flex;align-items:center}
.hero-copy{max-width:620px;padding-bottom:28px}
.eyebrow{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:.18em;color:#2269ab;font-size:11px;margin:0 0 22px}
.dot{width:6px;height:6px;border-radius:50%;background:var(--teal);box-shadow:0 0 0 4px rgba(75,178,177,.12)}
h1,h2,h3,p{margin-top:0}
h1,h2{font-family:Manrope,sans-serif;letter-spacing:-.035em}
.hero-copy h1{font-size:clamp(40px,4.2vw,63px);line-height:1.15;font-weight:800;color:#194d7e;margin:0 0 23px}
.hero-copy h1 em{font-style:normal;color:#2c8ac8}
.hero-subtitle{font-size:16px;color:#49667f;max-width:505px;line-height:1.85;margin-bottom:32px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.btn{border-radius:4px;min-height:49px;padding:0 23px;display:inline-flex;align-items:center;justify-content:center;gap:24px;font-size:13px;font-weight:800;letter-spacing:.02em;transition:transform .18s,background .18s,box-shadow .18s;border:1px solid transparent}
.btn:hover{transform:translateY(-2px);box-shadow:0 10px 23px rgba(30,91,153,.15)}
.btn span{font-size:19px;font-weight:500}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:#2369b5}
.btn-outline{background:rgba(255,255,255,.75);border-color:#9bc4e7;color:#236aa8}
.btn-outline:hover{background:white}
.hero-line{font-size:12px;color:#6e859a;display:flex;gap:10px;align-items:center;margin-top:36px}
.hero-line-icon{color:#249dc0;font-size:16px}
.hero-bottom-rule{height:6px;position:absolute;bottom:0;left:0;right:0;background:linear-gradient(90deg,#205d9b,#3d89d2,#72badc)}
.intro-section{padding:89px 0 97px;background:#fff}
.section-topline{display:flex;align-items:flex-end;justify-content:space-between;gap:40px;margin-bottom:36px}
.section-topline h2,.about-section h2{font-weight:800;font-size:clamp(29px,3vw,39px);line-height:1.25;margin:12px 0 0}
.section-topline>p{color:#718293;font-size:14px;max-width:378px;margin:0 0 2px;line-height:1.85}
.section-label{color:#2c7bbd;font-weight:800;font-size:11px;letter-spacing:.18em;display:block}
.category-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.category-card{height:268px;text-align:left;padding:28px 26px 25px;background:linear-gradient(155deg,#fafdff,#f3f8fc);border:1px solid #dfebf5;border-radius:7px;box-shadow:0 3px 16px rgba(19,71,116,.04);display:flex;align-items:flex-start;flex-direction:column;position:relative;transition:transform .22s,border-color .22s,box-shadow .22s;color:var(--navy)}
.category-card:hover{transform:translateY(-6px);border-color:#b0cee9;box-shadow:var(--shadow)}
.category-icon{font-size:39px;font-family:Arial,sans-serif;font-weight:100;color:#3d8ac7;line-height:1;margin-bottom:12px}
.ring-icon{font-size:45px}.leaf-icon{font-size:36px}.grid-icon{font-size:38px}
.category-count{font-size:10px;font-weight:700;letter-spacing:.13em;color:#8ca3b5;margin-bottom:8px}
.category-card strong{font-family:Manrope,sans-serif;font-weight:800;font-size:18px;line-height:1.35;letter-spacing:-.02em}
.category-caption{font-size:12px;color:#8494a2;margin-top:8px;line-height:1.5;max-width:190px}
.category-arrow{position:absolute;right:20px;bottom:17px;color:var(--blue);font-size:20px}
.product-section{padding:90px 0 94px;background:#f5f8fc}
.product-topline{margin-bottom:29px}
.product-toolbar{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;margin-bottom:27px}
.filter-list{display:flex;align-items:center;flex-wrap:wrap;gap:8px}
.filter-chip{border:1px solid #d9e4ee;background:#fff;color:#718296;padding:9px 15px;border-radius:3px;font-size:12px;font-weight:700;transition:.18s}
.filter-chip:hover{border-color:#92bce5;color:#2f78b8}
.filter-chip.selected{background:var(--blue);color:#fff;border-color:var(--blue)}
.result-count{font-size:12px;color:#8a9ba9;white-space:nowrap}
.products-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.product-card{background:#fff;border:1px solid #e0eaf3;border-radius:5px;padding:24px;min-height:213px;display:flex;flex-direction:column;transition:transform .2s,box-shadow .2s,border-color .2s;position:relative}
.product-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#a9c9e8}
.product-card.featured{border-top:3px solid #8bc728}
.product-card:focus-within{outline:2px solid #7ab8f4}
.product-card-top{display:flex;justify-content:space-between;align-items:center;gap:15px;margin-bottom:24px}
.product-tag{display:inline-block;font-size:10px;letter-spacing:.03em;color:#397eb4;background:#eaf4fc;padding:5px 9px;border-radius:2px;font-weight:700}
.product-card-index{font-size:11px;color:#bccbd5;letter-spacing:.06em}
.product-card h3{font-size:17px;font-weight:800;line-height:1.45;margin-bottom:11px;color:#23425d;overflow-wrap:anywhere}
.product-english-name{font-size:11px;line-height:1.5;color:#8299aa;display:block;margin:-5px 0 12px;overflow-wrap:anywhere}
.product-meta{font-size:12px;color:#8d9eac;margin:0 0 21px}
.product-meta strong{color:#4d748e;font-weight:700}
.product-bottom{margin-top:auto;border-top:1px solid #ecf0f5;padding-top:13px;display:flex;align-items:center;justify-content:space-between}
.product-bottom button{border:0;background:transparent;color:#2d75b8;font-size:12px;font-weight:800;padding:0;display:flex;align-items:center;gap:9px}
.product-bottom button span{font-size:18px}
.product-bottom>span{font-size:10px;color:#a1aebc;letter-spacing:.04em}
.catalog-footer{text-align:center;margin-top:36px}
.btn-ghost{border:1px solid #a8c3de;color:#256caf;background:transparent;min-width:204px}
.btn-ghost:hover{background:white}
.empty-state{grid-column:1/-1;background:#fff;padding:70px 20px;text-align:center;border-radius:6px;color:#7a8b9b}
.materials-feature{background:linear-gradient(110deg,#163e63,#116ba7);color:#fff;overflow:hidden}
.materials-inner{display:grid;grid-template-columns:46% 54%;min-height:458px}
.materials-visual{position:relative;min-height:458px;border-right:1px solid rgba(255,255,255,.13);display:flex;align-items:center;justify-content:center;overflow:hidden}
.materials-visual:after{content:'';position:absolute;inset:0;background:radial-gradient(circle at 35% 45%,rgba(97,220,231,.18),transparent 57%)}
.molecule-decor{position:absolute;width:282px;height:254px;top:65px;left:22%;opacity:.38;z-index:1}
.molecule-decor:before,.molecule-decor:after{content:'';position:absolute;width:135px;height:135px;border:2px solid #b2e8f8;transform:rotate(30deg);top:12px;left:55px;border-radius:25px}
.molecule-decor:after{transform:rotate(70deg);left:82px;top:70px}
.molecule-decor i{display:block;position:absolute;width:14px;height:14px;border-radius:50%;background:#c8f8ff;box-shadow:0 0 18px #74e1f4;z-index:3}
.molecule-decor i:nth-child(1){left:54px;top:9px}.molecule-decor i:nth-child(2){left:200px;top:53px}.molecule-decor i:nth-child(3){left:82px;top:210px}.molecule-decor i:nth-child(4){left:244px;top:185px}.molecule-decor i:nth-child(5){left:137px;top:135px}.molecule-decor i:nth-child(6){left:33px;top:154px}
.materials-watermark{font-family:Manrope,sans-serif;font-size:96px;font-weight:800;letter-spacing:-.09em;color:rgba(255,255,255,.15);z-index:2;margin-top:35px}
.materials-watermark span{font-size:18px;vertical-align:top;letter-spacing:0}
.materials-caption{position:absolute;left:3px;bottom:35px;font-size:10px;letter-spacing:.22em;color:#81d9eb;line-height:1.8;z-index:2}
.materials-text{padding:80px 0 72px 67px}
.light-label{color:#95dced}
.materials-text h2{font-size:clamp(31px,3.1vw,42px);line-height:1.23;margin:15px 0 20px;font-weight:800}
.materials-text h2 em{font-style:normal;color:#8fdef0}
.materials-text p{color:#c8dcea;max-width:506px;line-height:1.9;font-size:14px}
.materials-tags{display:flex;gap:9px;flex-wrap:wrap;margin:27px 0 30px}
.materials-tags span{font-size:11px;padding:7px 12px;border:1px solid rgba(196,237,253,.36);border-radius:2px;color:#ccebf7}
.text-link{color:#fff;font-size:13px;font-weight:800;display:inline-flex;gap:20px;align-items:center}
.text-link span{font-size:18px}
.text-link:hover{color:#83d4ed}
.about-section{padding:105px 0}
.about-grid{display:grid;grid-template-columns:48% 52%;gap:65px;align-items:center}
.about-section h2{font-size:clamp(31px,3.4vw,44px);margin:16px 0 22px}
.about-english-name{font-size:.42em;letter-spacing:0;vertical-align:middle;color:#4d7895;font-weight:600;white-space:normal}
.blue-dash{height:4px;width:55px;background:var(--blue);margin-bottom:25px}
.about-lead{font-size:16px;font-weight:700;color:#48687f;line-height:1.75}
.about-section p:not(.about-lead){color:#7b8c9c;line-height:1.95;max-width:538px;font-size:14px;margin-bottom:25px}
.small-btn{min-height:46px;padding:0 19px}
.about-visual{height:379px;min-width:0;background:linear-gradient(140deg,#ecf8fe,#cfebfa);border-radius:6px;position:relative;overflow:hidden;box-shadow:var(--shadow)}
.about-pattern{position:absolute;width:500px;height:500px;border:1px solid rgba(49,128,194,.16);border-radius:50%;right:-115px;top:-175px;box-shadow:0 0 0 35px rgba(255,255,255,.22),0 0 0 78px rgba(255,255,255,.22),0 0 0 117px rgba(255,255,255,.16)}
.about-pattern:before{content:'';width:180px;height:180px;position:absolute;right:130px;bottom:95px;border:12px solid rgba(50,125,195,.17);transform:rotate(45deg);border-radius:30px}
.about-note{position:absolute;left:52px;bottom:51px;display:flex;flex-direction:column;gap:13px}
.about-note>span{color:#2e7dbb;font-size:12px;letter-spacing:.19em;font-weight:800}
.about-note strong{color:#1c557e;font-size:29px;font-family:Manrope,sans-serif;line-height:1.2;letter-spacing:-.04em}
.about-note small{font-size:11px;color:#76a2c4;letter-spacing:.15em;font-weight:800}
.strength-section{background:#f7fafd;border-top:1px solid #edf1f5;border-bottom:1px solid #e9f0f6;padding:37px 0}
.strength-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.strength-grid>div{padding:0 23px;border-right:1px solid #dbe5ef;display:flex;flex-direction:column;align-items:flex-start}
.strength-grid>div:first-child{padding-left:0}.strength-grid>div:last-child{border:0;padding-right:0}
.strength-icon{font-size:23px;line-height:1;color:#3b89c7;margin-bottom:11px}
.strength-grid strong{font-size:13px;color:#2c5675}
.strength-grid p{font-size:12px;color:#8796a5;margin:3px 0 0;line-height:1.7}
.contact-banner{padding:76px 0;background:linear-gradient(120deg,#2369ab,#3486cc);color:#fff}
.contact-inner{display:grid;grid-template-columns:1fr 385px;gap:75px;align-items:center}
.contact-inner h2{font-size:clamp(31px,3.4vw,44px);line-height:1.2;margin:15px 0 15px}
.contact-inner p{color:#d4e8f8;max-width:605px;margin-bottom:0;font-size:14px;line-height:1.9}
.contact-addresses{display:grid;gap:13px;margin-top:27px}
.contact-addresses>div{display:flex;flex-direction:column;gap:2px;border-left:2px solid #8dcbe7;padding-left:15px}
.contact-addresses strong{font-size:12px;letter-spacing:.02em;color:#fff}
.contact-addresses span{font-size:12px;color:#d3e7f6;max-width:655px;line-height:1.75}
.contact-card{background:#fff;color:#234c70;padding:24px 27px 22px;border-radius:6px;box-shadow:0 18px 35px rgba(11,59,109,.2)}
.contact-card-icon{font-size:27px;color:#4e98cc;display:block;margin-bottom:7px}
.contact-card h3{font-family:Manrope,sans-serif;font-size:19px;font-weight:800;margin-bottom:7px}
.contact-card p{color:#8193a3;font-size:12px;line-height:1.75;margin-bottom:19px}
.contact-card p strong{color:#2b5576}
.contact-card .contact-detail{display:block;color:#2e80bd;font-size:14px;font-weight:700;line-height:1.8;margin-bottom:6px}
.contact-card .contact-detail:hover{text-decoration:underline}
.contact-card .btn{margin-top:15px}
.btn-white{background:#e8f3fb;color:#246eaa;min-height:43px;font-size:11px;gap:12px;padding:0 15px}
.copy-feedback{display:block;font-size:11px;min-height:17px;margin-top:8px;color:#267b72}
.footer{background:#222;color:#b7b7b7;padding:62px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1.5fr 1.3fr;gap:45px;padding-bottom:70px}
.footer h3{font-size:16px;color:white;font-weight:700;position:relative;margin-bottom:25px}
.footer h3:after{content:'';position:absolute;width:37px;height:2px;background:#a9d0ef;left:0;bottom:-9px}
.footer a{display:block;color:#c1c1c1;font-size:13px;line-height:2.8;transition:color .18s}
.footer a:hover{color:#71bde9}
.footer p{font-size:13px;line-height:2;color:#b7b7b7}
.footer-logo{color:#fff;font-weight:800;font-size:36px;letter-spacing:-.07em;font-family:Manrope,sans-serif;margin-bottom:17px}
.footer-logo span{font-size:13px;letter-spacing:.17em;margin-left:7px}
.footer-logo{display:inline-flex;background:#fff;border-radius:5px;padding:4px 10px;margin-bottom:17px}
.footer-logo img{width:140px;height:69px;object-fit:contain}
.footer-grid>div:last-child a{line-height:1.6;overflow-wrap:anywhere}
.footer-about small{font-size:10px;color:#8a8a8a;line-height:1.8;display:block;max-width:335px}
.footer-bottom{border-top:1px solid #3a3a3a;min-height:80px;display:flex;align-items:center;justify-content:space-between;color:#a9a9a9;font-size:12px}
.product-dialog{border:1px solid #d6e8f5;box-shadow:0 26px 80px rgba(12,55,100,.3);border-radius:8px;padding:38px;width:min(580px,calc(100% - 30px));color:var(--navy)}
.product-dialog::backdrop{background:rgba(12,34,56,.68)}
.product-dialog h2{font-size:27px;line-height:1.35;margin:12px 35px 24px 0;overflow-wrap:anywhere}
.product-dialog .dialog-english{margin:-15px 0 20px;color:#6c90aa;font-size:13px;line-height:1.6;overflow-wrap:anywhere}
.product-dialog .dialog-english[hidden]{display:none}
.dialog-close{position:absolute;right:17px;top:9px;border:0;color:#7094af;font-size:29px;background:transparent}
.dialog-info{display:grid;gap:0;border:1px solid #e4edf4;border-radius:4px;overflow:hidden;margin-bottom:23px}
.dialog-info>div{padding:12px 17px;border-bottom:1px solid #e4edf4;display:flex;flex-direction:column;gap:2px}.dialog-info>div:last-child{border:0}
.dialog-info>div[hidden]{display:none}
.dialog-info span{color:#869cac;font-size:10px;letter-spacing:.08em;font-weight:800}.dialog-info strong{font-weight:700;font-size:14px;color:#2e5877}
.product-dialog>p{font-size:13px;color:#788b9b;margin-bottom:21px}
.dialog-feedback{margin-top:10px}
.dialog-actions{display:flex;gap:10px;flex-wrap:wrap}
.dialog-actions .btn{gap:12px;min-height:46px;padding:0 17px}
.scroll-top{position:fixed;bottom:24px;right:24px;border:0;border-radius:50%;background:#2e7cc5;color:#fff;width:46px;height:46px;font-size:25px;z-index:25;box-shadow:0 6px 18px rgba(22,88,151,.25);opacity:0;pointer-events:none;transition:opacity .2s,transform .2s}
.scroll-top.visible{opacity:1;pointer-events:auto}.scroll-top:hover{transform:translateY(-3px)}
.lang-zh{font-family:'DM Sans','Microsoft YaHei','PingFang SC','Noto Sans SC',sans-serif}
.lang-zh h1,.lang-zh h2,.lang-zh h3,.lang-zh .category-card strong{font-family:'Manrope','Microsoft YaHei','PingFang SC','Noto Sans SC',sans-serif;letter-spacing:0}
.lang-zh .hero-copy h1{line-height:1.25}
.lang-zh .hero-subtitle{max-width:475px}
.lang-zh .category-card strong{font-size:19px}
@media(max-width:1050px){.container{padding:0 25px}.brand{min-width:205px}.search-box{width:min(480px,55%)}.nav-inner>a{padding:0 12px;font-size:13px}.nav-inner .nav-highlight{margin-right:6px;padding:0 13px}.category-grid{grid-template-columns:repeat(2,1fr)}.materials-text{padding-left:40px}.about-grid{gap:35px}.hero-section{height:590px}.footer-grid{gap:28px}}
@media(max-width:730px){.container{padding:0 18px}.top-strip-inner>span{display:none}.top-strip-inner{justify-content:flex-end}.main-header{height:84px}.brand{min-width:auto}.brand-mark{width:46px;height:46px}.brand-mark svg{width:45px}.brand-name strong{font-size:30px}.brand-name small{font-size:8px}.search-box{height:40px;width:min(350px,48%)}.search-box button{width:47px;font-size:0}.search-box button svg{width:18px}.search-box input{padding:0 10px;font-size:12px}.menu-toggle{display:flex}.nav-bar{height:auto;display:none}.nav-bar.open{display:block}.nav-inner{flex-direction:column;height:auto;padding:0}.nav-inner>a,.nav-inner .nav-highlight{min-height:46px;border-top:1px solid rgba(255,255,255,.15);margin:0;font-size:13px;padding:0 18px}.hero-section{height:595px}.hero-image{inset:0;background-position:58% center;background-image:linear-gradient(90deg,rgba(241,250,255,.96),rgba(241,250,255,.82) 47%,rgba(241,250,255,.42)),url('assets/chemistry-hero.png')}.hero-copy{max-width:520px;padding-bottom:0}.hero-copy h1{font-size:clamp(37px,7vw,51px)}.hero-subtitle{font-size:14px}.hero-line{margin-top:28px}.intro-section,.product-section{padding:66px 0}.section-topline{display:block}.section-topline>p{max-width:550px;margin-top:15px}.category-card{height:240px;padding:23px}.products-grid{grid-template-columns:repeat(2,1fr)}.materials-inner{grid-template-columns:1fr}.materials-visual{min-height:230px}.materials-caption{left:14px}.molecule-decor{top:-27px;left:33%}.materials-watermark{font-size:84px}.materials-text{padding:35px 0 60px}.about-section{padding:70px 0}.about-grid{grid-template-columns:1fr}.about-visual{height:300px}.strength-grid{grid-template-columns:repeat(2,1fr);gap:28px 0}.strength-grid>div:nth-child(2){border:0}.strength-grid>div:nth-child(3){padding-left:0}.contact-inner{grid-template-columns:1fr;gap:30px}.contact-banner{padding:65px 0}.footer-grid{grid-template-columns:1.3fr 1fr;gap:30px}.footer-bottom{gap:15px;flex-wrap:wrap;padding-top:22px;padding-bottom:22px}}
@media(max-width:480px){.search-box{width:46%;border-width:1px}.search-box input::placeholder{font-size:0}.hero-section{height:610px}.hero-copy h1{font-size:38px}.hero-actions{gap:9px}.hero-actions .btn{padding:0 13px;min-height:44px;font-size:11px;gap:10px}.hero-image{background-position:65% center}.category-grid,.products-grid{grid-template-columns:1fr}.category-card{height:190px}.category-icon{position:absolute;right:22px;top:20px;font-size:33px}.category-count{margin-bottom:9px}.category-caption{max-width:none}.category-arrow{right:18px;bottom:13px}.product-card{min-height:190px}.section-topline h2{font-size:29px}.materials-visual{min-height:180px}.materials-watermark{font-size:62px}.about-note{left:25px;bottom:30px}.about-note strong{font-size:24px}.strength-grid{grid-template-columns:1fr}.strength-grid>div,.strength-grid>div:nth-child(3){border:0;padding:0}.footer-grid{grid-template-columns:1fr 1fr;gap:24px}.footer-grid>div:first-child{grid-column:1/-1}.footer-grid>div:last-child{grid-column:1/-1}.footer-bottom{font-size:11px}.product-dialog{padding:28px 20px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition-duration:0s!important;animation-duration:0s!important}}
@media(min-width:731px) and (max-width:1050px){.header-inner{gap:17px}.brand{min-width:177px}.search-box{width:46%}.language-switch button{padding:7px 7px}}
@media(max-width:730px){.main-header{height:132px}.header-inner{flex-wrap:wrap;gap:4px 9px;align-content:center;justify-content:space-between}.brand{order:1}.language-switch{order:2;margin-left:auto}.menu-toggle{order:3}.search-box{order:4;width:100%;height:39px}.search-box button{width:75px;font-size:11px}.search-box input::placeholder{font-size:12px}.nav-bar{z-index:28}.lang-zh .hero-copy h1{font-size:38px}}
@media(max-width:480px){.language-switch button{padding:6px 7px;font-size:11px}.search-box{width:100%}.search-box button{width:73px;font-size:11px}.search-box input::placeholder{font-size:11px}.lang-zh .hero-copy h1{font-size:34px}.lang-zh .section-topline h2{font-size:28px}}
@media(max-width:730px){.official-logo{width:128px;height:57px}.brand-caption{font-size:7px;margin:0 0 1px 17px}.brand{min-width:auto;max-width:137px}}