:root{--primary:#ff6b9d;--primary-light:#ff8fb1;--primary-lighter:#ffb3c6;--primary-dark:#e05585;--bg:#fff9fb;--bg-alt:#fff0f5;--card-bg:rgba(255,255,255,.72);--card-border:rgba(255,107,157,.12);--text:#3d2b33;--text-secondary:#8a6b78;--text-muted:#b39aa5;--shadow:0 4px 24px rgba(255,107,157,.1);--shadow-hover:0 12px 40px rgba(255,107,157,.2);--glass-bg:rgba(255,255,255,.55);--glass-border:rgba(255,255,255,.65);--radius:16px;--radius-sm:10px;--radius-lg:24px;--transition:.35s cubic-bezier(.4,0,.2,1);--font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif}

[data-theme="dark"]{--bg:#1a1218;--bg-alt:#231a20;--card-bg:rgba(45,32,40,.72);--card-border:rgba(255,107,157,.15);--text:#f0e4ea;--text-secondary:#c9a8b8;--text-muted:#8a6b78;--shadow:0 4px 24px rgba(0,0,0,.3);--shadow-hover:0 12px 40px rgba(255,107,157,.25);--glass-bg:rgba(45,32,40,.55);--glass-border:rgba(255,107,157,.12)}

*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}

html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}

body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.8;font-size:16px;overflow-x:hidden;transition:background var(--transition),color var(--transition)}

body::before{content:"";position:fixed;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle at 20% 30%,rgba(255,107,157,.08) 0%,transparent 50%),radial-gradient(circle at 80% 70%,rgba(255,179,198,.1) 0%,transparent 50%);pointer-events:none;z-index:-1;animation:bgFloat 20s ease-in-out infinite alternate}

@keyframes bgFloat{0%{transform:translate(0,0) rotate(0deg)}100%{transform:translate(2%,2%) rotate(3deg)}}

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}

h1,h2,h3{line-height:1.4;font-weight:700;color:var(--text)}

h1{font-size:clamp(1.6rem,4vw,2.6rem)}

h2{font-size:clamp(1.3rem,3vw,1.8rem);margin-bottom:1.2rem;position:relative;padding-bottom:.6rem}

h2::after{content:"";position:absolute;bottom:0;left:0;width:60px;height:3px;background:linear-gradient(90deg,var(--primary),var(--primary-lighter));border-radius:3px}

h3{font-size:clamp(1.05rem,2.2vw,1.3rem);margin:1.5rem 0 .8rem;color:var(--primary-dark)}

p{margin-bottom:1rem;color:var(--text-secondary)}

strong{color:var(--text)}

#site-header{position:sticky;top:0;z-index:1000;background:var(--glass-bg);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--glass-border);transition:background var(--transition),box-shadow var(--transition)}

#site-header.scrolled{box-shadow:0 2px 20px rgba(255,107,157,.12)}

#site-header nav{max-width:1280px;margin:0 auto;padding:.6rem 1.5rem;display:flex;align-items:center;gap:1rem}

.nav-brand a{display:flex;align-items:center;gap:.5rem;font-size:1.2rem;font-weight:700;color:var(--text);white-space:nowrap}

.nav-brand svg{width:38px;height:38px;flex-shrink:0;transition:transform var(--transition)}

.nav-brand a:hover svg{transform:rotate(-10deg) scale(1.08)}

.nav-brand span{background:linear-gradient(135deg,var(--primary),var(--primary-light));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}

.nav-menu{display:flex;gap:.2rem;flex:1;justify-content:center;flex-wrap:wrap}

.nav-menu li a{display:block;padding:.45rem .75rem;border-radius:var(--radius-sm);font-size:.92rem;color:var(--text-secondary);transition:all var(--transition);position:relative}

.nav-menu li a::after{content:"";position:absolute;bottom:2px;left:50%;width:0;height:2px;background:var(--primary);transition:all var(--transition);transform:translateX(-50%);border-radius:2px}

.nav-menu li a:hover{color:var(--primary);background:rgba(255,107,157,.08)}

.nav-menu li a:hover::after{width:60%}

.nav-actions{display:flex;align-items:center;gap:.5rem}

.nav-actions form{display:flex;align-items:center;background:var(--card-bg);border:1px solid var(--card-border);border-radius:50px;overflow:hidden;transition:all var(--transition)}

.nav-actions form:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(255,107,157,.15)}

.nav-actions input[type="search"]{border:none;background:transparent;padding:.45rem .9rem;font-size:.88rem;color:var(--text);outline:none;width:160px;font-family:var(--font)}

.nav-actions input[type="search"]::placeholder{color:var(--text-muted)}

.nav-actions button[type="submit"]{border:none;background:linear-gradient(135deg,var(--primary),var(--primary-light));color:#fff;padding:.45rem 1rem;font-size:.85rem;cursor:pointer;font-family:var(--font);transition:opacity var(--transition)}

.nav-actions button[type="submit"]:hover{opacity:.85}

#theme-toggle,#mobile-menu-btn{border:none;background:var(--card-bg);border:1px solid var(--card-border);width:38px;height:38px;border-radius:50%;cursor:pointer;font-size:1.1rem;display:flex;align-items:center;justify-content:center;transition:all var(--transition);flex-shrink:0}

#theme-toggle:hover,#mobile-menu-btn:hover{background:var(--primary);color:#fff;transform:scale(1.1);border-color:var(--primary)}

#mobile-menu-btn{display:none}

main{max-width:1280px;margin:0 auto;padding:0 1.5rem}

section{padding:3rem 0;animation:fadeInUp .6s ease-out both}

@keyframes fadeInUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}

section:nth-child(2){animation-delay:.1s}
section:nth-child(3){animation-delay:.15s}
section:nth-child(4){animation-delay:.2s}
section:nth-child(5){animation-delay:.25s}

#hero{display:grid;grid-template-columns:1fr 1fr;gap:2.5rem;align-items:center;padding:3.5rem 0 2.5rem;position:relative}

.hero-content h1{background:linear-gradient(135deg,var(--primary-dark),var(--primary),var(--primary-light));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:1.2rem;animation:titleGlow 3s ease-in-out infinite alternate}

@keyframes titleGlow{0%{filter:brightness(1)}100%{filter:brightness(1.12)}}

.hero-content p{font-size:1.02rem;max-width:560px}

.hero-actions{display:flex;gap:1rem;margin-top:1.5rem;flex-wrap:wrap}

.btn-primary,.btn-secondary{display:inline-flex;align-items:center;justify-content:center;padding:.75rem 1.8rem;border-radius:50px;font-size:.95rem;font-weight:600;cursor:pointer;transition:all var(--transition);border:none;font-family:var(--font);position:relative;overflow:hidden}

.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-light));color:#fff;box-shadow:0 4px 16px rgba(255,107,157,.35)}

.btn-primary::before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.3),transparent);transition:left .6s}

.btn-primary:hover{transform:translateY(-3px);box-shadow:0 8px 28px rgba(255,107,157,.45);color:#fff}

.btn-primary:hover::before{left:100%}

.btn-secondary{background:var(--card-bg);color:var(--primary);border:2px solid var(--primary);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}

.btn-secondary:hover{background:var(--primary);color:#fff;transform:translateY(-3px);box-shadow:0 8px 28px rgba(255,107,157,.3)}

.hero-banner{position:relative;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);min-height:260px}

.banner-slide{display:none;animation:slideIn .5s ease-out}

.banner-slide.active{display:block}

@keyframes slideIn{from{opacity:0;transform:scale(1.03)}to{opacity:1;transform:scale(1)}}

.banner-slide svg{border-radius:var(--radius-lg);width:100%;height:auto}

.hero-stats{grid-column:1/-1;display:grid;grid-template-columns:repeat(4,1fr);gap:1.2rem;margin-top:1rem}

.stat-item{background:var(--card-bg);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--card-border);border-radius:var(--radius);padding:1.2rem;text-align:center;transition:all var(--transition)}

.stat-item:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);border-color:var(--primary-lighter)}

.stat-number{display:block;font-size:clamp(1.4rem,3vw,2rem);font-weight:800;background:linear-gradient(135deg,var(--primary),var(--primary-light));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}

.stat-label{display:block;font-size:.82rem;color:var(--text-muted);margin-top:.3rem}

.breadcrumb{display:flex;flex-wrap:wrap;gap:.4rem;padding:1rem 0;font-size:.85rem;color:var(--text-muted);list-style:none}

.breadcrumb li+li::before{content:"›";margin-right:.4rem;color:var(--text-muted)}

.breadcrumb a{color:var(--text-secondary)}

.breadcrumb a:hover{color:var(--primary)}

#brand-intro,#products,#advantages,#solutions,#applications,#cases,#testimonials,#news,#articles,#howto,#faq,#contact,#sitemap,#links,#privacy,#disclaimer{background:var(--card-bg);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--card-border);border-radius:var(--radius-lg);padding:2rem;margin-bottom:1.5rem;box-shadow:var(--shadow);transition:box-shadow var(--transition),border-color var(--transition)}

#brand-intro:hover,#products:hover,#advantages:hover,#solutions:hover,#applications:hover,#cases:hover,#testimonials:hover,#news:hover,#articles:hover,#howto:hover,#faq:hover,#contact:hover,#sitemap:hover,#links:hover,#privacy:hover,#disclaimer:hover{box-shadow:var(--shadow-hover);border-color:rgba(255,107,157,.25)}

#brand-intro ul,#contact ul,#sitemap ul,#links ul,#howto ul,#howto ol{list-style:none;padding-left:0}

#brand-intro ul li,#contact ul li,#sitemap ul li,#links ul li,#howto ul li{padding:.4rem 0 .4rem 1.6rem;position:relative;color:var(--text-secondary)}

#brand-intro ul li::before,#contact ul li::before,#sitemap ul li::before,#links ul li::before,#howto ul li::before{content:"✦";position:absolute;left:0;color:var(--primary);font-size:.8rem}

#howto ol{counter-reset:step}

#howto ol li{padding:.6rem 0 .6rem 2.4rem;position:relative;color:var(--text-secondary);counter-increment:step}

#howto ol li::before{content:counter(step);position:absolute;left:0;top:.6rem;width:1.6rem;height:1.6rem;background:linear-gradient(135deg,var(--primary),var(--primary-light));color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.78rem;font-weight:700}

#products h3{background:linear-gradient(135deg,var(--primary),var(--primary-light));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;display:inline-block;padding:.15rem 0;border-bottom:2px dashed var(--primary-lighter)}

#advantages h3,#solutions h3,#applications h3{position:relative;padding-left:1.2rem}

#advantages h3::before,#solutions h3::before,#applications h3::before{content:"";position:absolute;left:0;top:.35em;width:6px;height:1em;background:linear-gradient(180deg,var(--primary),var(--primary-lighter));border-radius:3px}

blockquote{background:var(--bg-alt);border-left:4px solid var(--primary);border-radius:0 var(--radius) var(--radius) 0;padding:1.2rem 1.5rem;margin:1rem 0;transition:all var(--transition);position:relative}

blockquote:hover{transform:translateX(6px);box-shadow:var(--shadow);border-left-color:var(--primary-dark)}

blockquote p{font-style:italic;color:var(--text);margin-bottom:.5rem}

blockquote cite{font-size:.85rem;color:var(--text-muted);font-style:normal;display:block;text-align:right}

#news article,#articles article{background:var(--bg-alt);border-radius:var(--radius);padding:1.5rem;margin-bottom:1.2rem;transition:all var(--transition);border:1px solid transparent}

#news article:hover,#articles article:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--card-border)}

#news article h3,#articles article h3{margin-top:0;margin-bottom:.5rem}

#news article time,#articles article time{display:inline-block;font-size:.82rem;color:var(--text-muted);background:var(--card-bg);padding:.15rem .7rem;border-radius:50px;margin-bottom:.8rem;border:1px solid var(--card-border)}

#news article a,#articles article a{font-weight:600;display:inline-flex;align-items:center;gap:.3rem;font-size:.9rem}

#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)}

#faq details{background:var(--bg-alt);border-radius:var(--radius);margin-bottom:.8rem;overflow:hidden;transition:all var(--transition);border:1px solid transparent}

#faq details:hover{border-color:var(--card-border);box-shadow:var(--shadow)}

#faq details[open]{border-color:var(--primary-lighter);box-shadow:var(--shadow)}

#faq summary{padding:1rem 1.5rem;cursor:pointer;font-weight:600;color:var(--text);display:flex;align-items:center;gap:.6rem;list-style:none;transition:color var(--transition);position:relative}

#faq summary::-webkit-details-marker{display:none}

#faq summary::before{content:"+";display:inline-flex;align-items:center;justify-content:center;width:1.4rem;height:1.4rem;background:linear-gradient(135deg,var(--primary),var(--primary-light));color:#fff;border-radius:50%;font-size:.9rem;font-weight:700;flex-shrink:0;transition:transform var(--transition)}

#faq details[open] summary::before{content:"−";transform:rotate(180deg)}

#faq summary:hover{color:var(--primary)}

#faq details p{padding:0 1.5rem 1.2rem 3.5rem;margin:0;animation:fadeIn .3s ease-out}

@keyframes fadeIn{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}

#contact p{margin-bottom:.6rem;padding-left:1.6rem;position:relative}

#contact p::before{content:"📍";position:absolute;left:0;font-size:.85rem}

#contact h3+p::before{content:"🏢"}

#sitemap ul{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:.3rem}

#sitemap ul li::before{content:"📄"}

#links ul{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:.5rem}

#links ul li::before{content:"🔗"}

#privacy,#disclaimer{background:var(--bg-alt)}

#privacy p,#disclaimer p{font-size:.92rem}

#back-to-top{position:fixed;bottom:2rem;right:2rem;width:48px;height:48px;border-radius:50%;border:none;background:linear-gradient(135deg,var(--primary),var(--primary-light));color:#fff;font-size:1.3rem;cursor:pointer;box-shadow:0 4px 16px rgba(255,107,157,.4);opacity:0;visibility:hidden;transform:translateY(20px);transition:all var(--transition);z-index:999;display:flex;align-items:center;justify-content:center}

#back-to-top.visible{opacity:1;visibility:visible;transform:translateY(0)}

#back-to-top:hover{transform:translateY(-4px) scale(1.08);box-shadow:0 8px 28px rgba(255,107,157,.5)}

footer{background:linear-gradient(135deg,rgba(255,107,157,.06),rgba(255,179,198,.08));border-top:1px solid var(--card-border);margin-top:2rem;padding:3rem 1.5rem 1.5rem}

.footer-content{max-width:1280px;margin:0 auto;display:grid;grid-template-columns:1.5fr 1fr 1fr 1.5fr;gap:2rem}

.footer-brand{display:flex;flex-direction:column;gap:.8rem}

.footer-brand svg{width:44px;height:44px}

.footer-brand p{font-size:.9rem;color:var(--text-secondary);font-weight:600}

.footer-links h3,.footer-contact h3{font-size:1rem;margin-bottom:.8rem;color:var(--text);padding-bottom:.4rem;border-bottom:2px solid var(--primary-lighter);display:inline-block}

.footer-links ul li{margin-bottom:.4rem}

.footer-links ul li a{font-size:.88rem;color:var(--text-secondary);display:inline-block;transition:all var(--transition)}

.footer-links ul li a:hover{color:var(--primary);transform:translateX(4px)}

.footer-contact p{font-size:.85rem;color:var(--text-secondary);margin-bottom:.35rem}

.footer-bottom{max-width:1280px;margin:2rem auto 0;padding-top:1.5rem;border-top:1px solid var(--card-border);text-align:center}

.footer-bottom p{font-size:.8rem;color:var(--text-muted);margin-bottom:.3rem}

@media (max-width:1024px){
#hero{grid-template-columns:1fr;gap:2rem}
.hero-stats{grid-template-columns:repeat(4,1fr)}
.footer-content{grid-template-columns:1fr 1fr;gap:1.5rem}
}

@media (max-width:768px){
#site-header nav{padding:.5rem 1rem;flex-wrap:wrap}
.nav-menu{display:none;flex-direction:column;width:100%;order:10;padding:.5rem 0;gap:0}
.nav-menu.open{display:flex;animation:fadeIn .3s ease-out}
.nav-menu li a{padding:.7rem 1rem;border-radius:var(--radius-sm)}
#mobile-menu-btn{display:flex}
.nav-actions form input[type="search"]{width:100px}
.hero-stats{grid-template-columns:repeat(2,1fr)}
#brand-intro,#products,#advantages,#solutions,#applications,#cases,#testimonials,#news,#articles,#howto,#faq,#contact,#sitemap,#links,#privacy,#disclaimer{padding:1.5rem;border-radius:var(--radius)}
section{padding:2rem 0}
main{padding:0 1rem}
.footer-content{grid-template-columns:1fr;gap:1.5rem}
#back-to-top{bottom:1.2rem;right:1.2rem;width:42px;height:42px}
.breadcrumb{font-size:.78rem}
}

@media (max-width:480px){
h1{font-size:1.35rem}
.hero-actions{flex-direction:column}
.btn-primary,.btn-secondary{width:100%;text-align:center}
.hero-stats{grid-template-columns:1fr 1fr;gap:.8rem}
.stat-item{padding:.9rem .6rem}
.stat-number{font-size:1.3rem}
.nav-actions form{display:none}
#sitemap ul{grid-template-columns:1fr 1fr}
#links ul{grid-template-columns:1fr}
#faq summary{padding:.8rem 1rem;font-size:.92rem}
#faq details p{padding:0 1rem 1rem 2.8rem}
}

@media (prefers-reduced-motion:reduce){
*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
html{scroll-behavior:auto}
}

::selection{background:rgba(255,107,157,.25);color:var(--text)}

::-webkit-scrollbar{width:8px}
::-webkit-scrollbar-track{background:var(--bg-alt)}
::-webkit-scrollbar-thumb{background:linear-gradient(180deg,var(--primary),var(--primary-light));border-radius:4px}
::-webkit-scrollbar-thumb:hover{background:var(--primary-dark)}

:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}