:root{--primary:#ff6b35;--primary-dark:#e5551f;--primary-light:#ff8f5e;--secondary:#2d4059;--accent:#ea5455;--bg:#f7f8fa;--bg-card:#ffffff;--bg-glass:rgba(255,255,255,.72);--text:#1a1a2e;--text-secondary:#5a5a72;--text-muted:#8a8a9e;--border:rgba(0,0,0,.08);--shadow:0 4px 20px rgba(0,0,0,.08);--shadow-lg:0 12px 40px rgba(0,0,0,.12);--radius:16px;--radius-sm:10px;--radius-lg:24px;--transition:.3s cubic-bezier(.4,0,.2,1);--header-h:72px;--max-w:1200px}
[data-theme=dark]{--primary:#ff7f4d;--primary-dark:#ff6b35;--primary-light:#ffa07a;--secondary:#3a5070;--accent:#ff6b6b;--bg:#0f0f1a;--bg-card:#1a1a2e;--bg-glass:rgba(26,26,46,.75);--text:#eaeaf2;--text-secondary:#b0b0c8;--text-muted:#7a7a92;--border:rgba(255,255,255,.1);--shadow:0 4px 20px rgba(0,0,0,.3);--shadow-lg:0 12px 40px rgba(0,0,0,.5)}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text);line-height:1.7;font-size:16px;transition:background var(--transition),color var(--transition);overflow-x:hidden}
img,svg{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:none;transition:color var(--transition)}
a:hover{color:var(--primary-dark)}
ul,ol{list-style:none}
button{cursor:pointer;font-family:inherit;border:none;background:none;color:inherit}
input{font-family:inherit}
h1,h2,h3,h4{line-height:1.35;font-weight:700;color:var(--text)}
h1{font-size:clamp(1.6rem,4vw,2.4rem)}
h2{font-size:clamp(1.4rem,3vw,1.9rem);margin-bottom:1.2rem;position:relative;padding-bottom:.6rem}
h2::after{content:"";position:absolute;left:0;bottom:0;width:56px;height:4px;border-radius:2px;background:linear-gradient(90deg,var(--primary),var(--accent))}
h3{font-size:clamp(1.1rem,2.2vw,1.35rem);margin:1.5rem 0 .8rem}
p{margin-bottom:.9rem;color:var(--text-secondary)}
strong{color:var(--text);font-weight:600}
#site-header{position:sticky;top:0;z-index:1000;background:var(--bg-glass);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-bottom:1px solid var(--border);transition:background var(--transition),box-shadow var(--transition)}
#site-header.scrolled{box-shadow:var(--shadow)}
.header-inner{max-width:var(--max-w);margin:0 auto;padding:.7rem 1.2rem;display:flex;align-items:center;gap:1rem;flex-wrap:wrap}
.logo{display:flex;align-items:center;gap:.6rem;flex-shrink:0}
.logo svg{transition:transform var(--transition)}
.logo:hover svg{transform:rotate(-8deg) scale(1.08)}
.logo-text{font-size:1.3rem;font-weight:800;background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;white-space:nowrap}
#main-nav{flex:1;min-width:0}
#main-nav ul{display:flex;flex-wrap:wrap;gap:.2rem}
#main-nav a{display:block;padding:.45rem .7rem;border-radius:var(--radius-sm);font-size:.9rem;color:var(--text-secondary);font-weight:500;transition:all var(--transition);white-space:nowrap}
#main-nav a:hover{color:var(--primary);background:rgba(255,107,53,.1);transform:translateY(-2px)}
#mobile-menu-btn{display:none;font-size:1.5rem;padding:.4rem .6rem;border-radius:var(--radius-sm);color:var(--text);background:var(--bg-card);border:1px solid var(--border);transition:all var(--transition)}
#mobile-menu-btn:hover{background:var(--primary);color:#fff}
#dark-mode-btn{font-size:1.2rem;padding:.4rem .6rem;border-radius:var(--radius-sm);background:var(--bg-card);border:1px solid var(--border);transition:all var(--transition);flex-shrink:0}
#dark-mode-btn:hover{transform:rotate(20deg) scale(1.1);background:var(--primary);border-color:var(--primary)}
#site-search{display:flex;gap:.4rem;flex-shrink:0}
#site-search input{width:200px;padding:.5rem .9rem;border-radius:999px;border:1px solid var(--border);background:var(--bg-card);color:var(--text);font-size:.88rem;transition:all var(--transition);outline:none}
#site-search input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(255,107,53,.15);width:240px}
#site-search button{padding:.5rem 1.1rem;border-radius:999px;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;font-size:.88rem;font-weight:600;transition:all var(--transition);white-space:nowrap}
#site-search button:hover{transform:translateY(-2px);box-shadow:0 6px 18px rgba(255,107,53,.4)}
.breadcrumb{max-width:var(--max-w);margin:0 auto;padding:.8rem 1.2rem;display:flex;gap:.5rem;font-size:.85rem;color:var(--text-muted);list-style:none}
.breadcrumb li+li::before{content:"›";margin-right:.5rem;color:var(--text-muted)}
.breadcrumb a{color:var(--text-secondary)}
.breadcrumb a:hover{color:var(--primary)}
main{max-width:var(--max-w);margin:0 auto;padding:0 1.2rem 4rem}
section{margin-bottom:3.5rem;scroll-margin-top:calc(var(--header-h) + 16px)}
#hero{position:relative;padding:3rem 0 2rem;text-align:center}
#hero h1{margin-bottom:1.2rem;background:linear-gradient(135deg,var(--primary),var(--accent),var(--secondary));background-size:200% 200%;-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;animation:gradientShift 6s ease infinite}
@keyframes gradientShift{0%,100%{background-position:0% 50%}50%{background-position:100% 50%}}
#hero>p{max-width:820px;margin:0 auto 1.2rem;font-size:1.02rem}
#hero>p strong{color:var(--primary)}
#banner-carousel{position:relative;max-width:900px;margin:2rem auto;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg);background:var(--bg-card)}
#banner-carousel .slide{display:none;animation:fadeSlide .6s ease}
#banner-carousel .slide.active{display:block}
@keyframes fadeSlide{from{opacity:0;transform:scale(1.03)}to{opacity:1;transform:scale(1)}}
#banner-carousel svg{width:100%;height:auto;border-radius:var(--radius-lg)}
.carousel-prev,.carousel-next{position:absolute;top:50%;transform:translateY(-50%);width:44px;height:44px;border-radius:50%;background:var(--bg-glass);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);color:var(--text);font-size:1.6rem;line-height:1;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow);transition:all var(--transition);z-index:2}
.carousel-prev{left:12px}
.carousel-next{right:12px}
.carousel-prev:hover,.carousel-next:hover{background:var(--primary);color:#fff;transform:translateY(-50%) scale(1.12)}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;max-width:900px;margin:2.5rem auto 0}
.stats>div{background:var(--bg-card);border-radius:var(--radius);padding:1.5rem 1rem;box-shadow:var(--shadow);border:1px solid var(--border);transition:all var(--transition);position:relative;overflow:hidden}
.stats>div::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--primary),var(--accent));transform:scaleX(0);transform-origin:left;transition:transform var(--transition)}
.stats>div:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.stats>div:hover::before{transform:scaleX(1)}
.stats .num{font-size:clamp(1.5rem,3vw,2.1rem);font-weight:800;background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;display:block}
.stats p{font-size:.85rem;color:var(--text-muted);margin:0}
#brand-intro article,#products article,#solutions article,#applications article,#cases article,#news article,#articles article,#howto article,#contact address{background:var(--bg-card);border-radius:var(--radius);padding:1.8rem;box-shadow:var(--shadow);border:1px solid var(--border);transition:box-shadow var(--transition),transform var(--transition)}
#brand-intro article:hover,#products article:hover,#solutions article:hover,#applications article:hover,#cases article:hover,#howto article:hover{box-shadow:var(--shadow-lg)}
#products ul{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:.9rem;margin:1rem 0}
#products ul li{background:var(--bg);border-radius:var(--radius-sm);padding:1rem 1.1rem;border-left:4px solid var(--primary);font-size:.92rem;color:var(--text-secondary);transition:all var(--transition)}
#products ul li:hover{transform:translateX(6px);border-left-color:var(--accent);box-shadow:var(--shadow)}
#products ul li strong{display:block;margin-bottom:.2rem;color:var(--text)}
#cases blockquote{position:relative;background:var(--bg);border-radius:var(--radius-sm);padding:1.2rem 1.2rem 1.2rem 3rem;margin:1rem 0;border-left:4px solid var(--primary);font-style:italic;color:var(--text-secondary);transition:all var(--transition)}
#cases blockquote::before{content:"“";position:absolute;left:.8rem;top:.4rem;font-size:2.6rem;color:var(--primary);opacity:.4;font-family:Georgia,serif;line-height:1}
#cases blockquote:hover{background:rgba(255,107,53,.05);transform:translateX(4px)}
#news article{display:flex;flex-direction:column;gap:.5rem;margin-bottom:1.2rem}
#news article h3{margin:0}
#news article p:first-of-type{font-size:.82rem;color:var(--text-muted);margin:0}
#news article a,#articles article a{display:inline-flex;align-items:center;gap:.3rem;font-weight:600;font-size:.9rem;color:var(--primary);align-self:flex-start;transition:gap var(--transition)}
#news article a::after,#articles article a::after{content:"→";transition:transform var(--transition)}
#news article a:hover::after,#articles article a:hover::after{transform:translateX(4px)}
#articles article{margin-bottom:1.2rem;display:flex;flex-direction:column;gap:.5rem}
#articles article h3{margin:0;font-size:1.1rem}
#articles article p:first-of-type{font-size:.82rem;color:var(--text-muted);margin:0}
#articles article p:last-of-type{font-size:.92rem;margin:0}
#faq details{background:var(--bg-card);border-radius:var(--radius);margin-bottom:.9rem;border:1px solid var(--border);box-shadow:var(--shadow);overflow:hidden;transition:all var(--transition)}
#faq details[open]{box-shadow:var(--shadow-lg);border-color:rgba(255,107,53,.3)}
#faq summary{padding:1.1rem 1.4rem;font-weight:600;font-size:1rem;cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;gap:1rem;color:var(--text);transition:all var(--transition)}
#faq summary::-webkit-details-marker{display:none}
#faq summary::after{content:"+";font-size:1.4rem;font-weight:400;color:var(--primary);transition:transform var(--transition);flex-shrink:0}
#faq details[open] summary::after{transform:rotate(45deg)}
#faq summary:hover{background:rgba(255,107,53,.06);color:var(--primary)}
#faq details p{padding:0 1.4rem 1.2rem;font-size:.94rem;animation:faqOpen .35s ease}
@keyframes faqOpen{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}
#howto ol{counter-reset:step;display:flex;flex-direction:column;gap:.9rem;margin:1.2rem 0}
#howto ol li{counter-increment:step;position:relative;padding:1rem 1.2rem 1rem 3.6rem;background:var(--bg);border-radius:var(--radius-sm);font-size:.94rem;color:var(--text-secondary);transition:all var(--transition);border:1px solid transparent}
#howto ol li::before{content:counter(step);position:absolute;left:1rem;top:50%;transform:translateY(-50%);width:30px;height:30px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;font-weight:700;font-size:.85rem;display:flex;align-items:center;justify-content:center}
#howto ol li:hover{background:var(--bg-card);border-color:rgba(255,107,53,.3);transform:translateX(6px);box-shadow:var(--shadow)}
#howto ol li strong{color:var(--primary)}
#contact address{font-style:normal;display:grid;gap:.5rem}
#contact address p{margin:0;font-size:.94rem}
#contact address a{word-break:break-all}
#sitemap ul,#links ul{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:.6rem}
#sitemap ul li a,#links ul li a{display:block;padding:.7rem 1rem;background:var(--bg-card);border-radius:var(--radius-sm);border:1px solid var(--border);font-size:.9rem;color:var(--text-secondary);transition:all var(--transition)}
#sitemap ul li a:hover,#links ul li a:hover{background:var(--primary);color:#fff;border-color:var(--primary);transform:translateY(-3px);box-shadow:0 6px 18px rgba(255,107,53,.35)}
footer{background:var(--secondary);color:#cfd6e0;padding:3rem 1.2rem 2rem;margin-top:2rem}
footer section{max-width:var(--max-w);margin:0 auto 1.5rem}
footer h2{font-size:1.05rem;color:#fff;margin-bottom:.6rem;padding-bottom:.4rem}
footer h2::after{width:36px;height:3px;background:var(--primary)}
footer p{font-size:.85rem;color:#a8b2c1;margin-bottom:.5rem}
footer a{color:var(--primary-light)}
footer a:hover{color:#fff}
footer>p{max-width:var(--max-w);margin:1.5rem auto 0;text-align:center}
footer>p a{display:inline-block;padding:.5rem 1.2rem;border-radius:999px;background:rgba(255,255,255,.1);color:#fff;font-size:.85rem;transition:all var(--transition)}
footer>p a:hover{background:var(--primary);transform:translateY(-3px)}
#back-to-top{position:fixed;right:1.5rem;bottom:1.5rem;width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;font-size:1.3rem;display:flex;align-items:center;justify-content:center;box-shadow:0 6px 20px rgba(255,107,53,.45);opacity:0;visibility:hidden;transform:translateY(20px);transition:all var(--transition);z-index:999}
#back-to-top.visible{opacity:1;visibility:visible;transform:translateY(0)}
#back-to-top:hover{transform:translateY(-4px) scale(1.08);box-shadow:0 10px 28px rgba(255,107,53,.6)}
.reveal{opacity:0;transform:translateY(30px);transition:opacity .7s ease,transform .7s ease}
.reveal.visible{opacity:1;transform:translateY(0)}
@media(max-width:1024px){
#site-search input{width:150px}
#site-search input:focus{width:180px}
#main-nav a{padding:.4rem .5rem;font-size:.84rem}
}
@media(max-width:860px){
#mobile-menu-btn{display:block;order:3}
#dark-mode-btn{order:4}
#site-search{order:5;width:100%;margin-top:.5rem}
#site-search input{width:100%;flex:1}
#site-search input:focus{width:100%}
#main-nav{order:6;width:100%;max-height:0;overflow:hidden;transition:max-height .4s ease}
#main-nav.open{max-height:600px}
#main-nav ul{flex-direction:column;gap:.15rem;padding:.4rem 0}
#main-nav a{padding:.7rem 1rem;font-size:.95rem}
.header-inner{padding:.6rem 1rem}
.stats{grid-template-columns:repeat(2,1fr)}
#banner-carousel svg{height:auto}
}
@media(max-width:560px){
:root{--header-h:64px}
h1{font-size:1.45rem}
h2{font-size:1.3rem}
section{margin-bottom:2.5rem}
#hero{padding:2rem 0 1rem}
#hero>p{font-size:.94rem}
.stats{grid-template-columns:repeat(2,1fr);gap:.7rem}
.stats>div{padding:1.1rem .7rem}
.stats .num{font-size:1.4rem}
.stats p{font-size:.75rem}
#products ul{grid-template-columns:1fr}
#brand-intro article,#products article,#solutions article,#applications article,#cases article,#news article,#articles article,#howto article,#contact address{padding:1.2rem}
.carousel-prev,.carousel-next{width:36px;height:36px;font-size:1.3rem}
#faq summary{padding:.9rem 1rem;font-size:.92rem}
#faq details p{padding:0 1rem 1rem;font-size:.88rem}
#howto ol li{padding:.9rem 1rem .9rem 3.2rem;font-size:.88rem}
#back-to-top{right:1rem;bottom:1rem;width:42px;height:42px;font-size:1.1rem}
footer{padding:2rem 1rem 1.5rem}
#sitemap ul,#links ul{grid-template-columns:repeat(2,1fr)}
}
@media(prefers-reduced-motion:reduce){
*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
}
@media print{
#site-header,#back-to-top,#banner-carousel,.carousel-prev,.carousel-next,#site-search{display:none}
body{background:#fff;color:#000}
}