```css
*{margin:0;padding:0;box-sizing:border-box}
:root{--primary:#ff6b35;--primary-dark:#e85520;--primary-light:#ff9a56;--primary-glow:rgba(255,107,53,.35);--bg:#ffffff;--bg-alt:#f7f8fa;--bg-glass:rgba(255,255,255,.72);--text:#1a1a2e;--text-light:#555;--text-muted:#888;--border:#e5e7eb;--border-glass:rgba(255,255,255,.35);--card:#ffffff;--shadow:0 2px 12px rgba(0,0,0,.06);--shadow-hover:0 12px 32px rgba(255,107,53,.16);--radius:16px;--radius-sm:10px;--radius-lg:20px;--transition:.3s cubic-bezier(.4,0,.2,1)}
[data-theme="dark"]{--primary:#ff7d4d;--primary-dark:#ff6b35;--primary-light:#ffab7a;--primary-glow:rgba(255,125,77,.3);--bg:#0f1117;--bg-alt:#161923;--bg-glass:rgba(22,25,35,.78);--text:#e8e9ed;--text-light:#a0a3ad;--text-muted:#6b6e78;--border:#2a2e3d;--border-glass:rgba(255,255,255,.08);--card:#191c26;--shadow:0 2px 12px rgba(0,0,0,.35);--shadow-hover:0 12px 32px rgba(255,125,77,.2)}
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:1.75;font-size:15px;transition:background .4s,color .4s;overflow-x:hidden;-webkit-font-smoothing:antialiased}
a{color:var(--primary);text-decoration:none;transition:color .2s,opacity .2s}
a:hover{color:var(--primary-dark)}
img,svg{max-width:100%;display:block}
::selection{background:var(--primary);color:#fff}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
header{position:sticky;top:0;z-index:1000;background:var(--bg-glass);border-bottom:1px solid var(--border);backdrop-filter:blur(16px) saturate(180%);-webkit-backdrop-filter:blur(16px) saturate(180%);transition:background .4s,border-color .4s}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;color:var(--text);white-space:nowrap;transition:transform .25s}
.logo:hover{transform:scale(1.03)}
.logo svg{width:32px;height:32px;flex-shrink:0;border-radius:9px;box-shadow:0 2px 8px var(--primary-glow)}
.logo span b{color:var(--primary)}
nav.main-nav{display:flex;gap:2px;flex-wrap:wrap}
nav.main-nav a{padding:8px 12px;border-radius:var(--radius-sm);font-size:14px;color:var(--text-light);font-weight:500;position:relative;transition:background .2s,color .2s}
nav.main-nav a::after{content:"";position:absolute;bottom:4px;left:50%;width:0;height:2px;background:var(--primary);border-radius:1px;transition:width .25s,left .25s}
nav.main-nav a:hover{background:var(--bg-alt);color:var(--primary)}
nav.main-nav a:hover::after{width:60%;left:20%}
.nav-actions{display:flex;align-items:center;gap:8px}
.search-box{display:flex;align-items:center;background:var(--bg-alt);border:1px solid var(--border);border-radius:20px;padding:4px 4px 4px 14px;gap:6px;transition:border-color .25s,box-shadow .25s}
.search-box:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-glow)}
.search-box input{border:none;background:transparent;outline:none;color:var(--text);font-size:14px;width:140px;transition:width .3s}
.search-box input::placeholder{color:var(--text-muted)}
.search-box input:focus{width:180px}
.search-box button{background:var(--primary);border:none;border-radius:16px;color:#fff;padding:6px 14px;cursor:pointer;font-size:13px;font-weight:500;transition:background .2s,transform .2s}
.search-box button:hover{background:var(--primary-dark);transform:scale(1.04)}
.search-box button:active{transform:scale(.96)}
.theme-btn,.menu-btn{background:var(--bg-alt);border:1px solid var(--border);border-radius:var(--radius-sm);width:38px;height:38px;cursor:pointer;display:flex;align-items:center;justify-content:center;color:var(--text);transition:background .2s,color .2s,transform .2s,border-color .2s}
.theme-btn:hover,.menu-btn:hover{background:var(--primary);color:#fff;border-color:var(--primary);transform:rotate(12deg) scale(1.05)}
.menu-btn{display:none}
.mobile-nav{display:none;flex-direction:column;background:var(--bg-glass);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--border);padding:8px 20px 16px;animation:slideDown .3s ease}
.mobile-nav.open{display:flex}
.mobile-nav a{padding:12px 0;border-bottom:1px solid var(--border);color:var(--text-light);font-weight:500;transition:color .2s,padding-left .2s}
.mobile-nav a:hover{color:var(--primary);padding-left:6px}
@keyframes slideDown{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}
.banner{position:relative;overflow:hidden;border-radius:var(--radius-lg);margin:24px 0;background:linear-gradient(135deg,#ff6b35 0%,#ff9a56 50%,#ffb347 100%);color:#fff;min-height:280px;box-shadow:0 16px 48px var(--primary-glow);isolation:isolate}
.banner::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 20% 20%,rgba(255,255,255,.25),transparent 55%),radial-gradient(circle at 80% 80%,rgba(255,255,255,.15),transparent 50%);pointer-events:none;z-index:1}
.banner::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 60%,rgba(0,0,0,.12));pointer-events:none;z-index:1}
.slide{display:none;padding:48px 40px;min-height:280px;align-items:center;position:relative;z-index:2}
.slide.active{display:flex;flex-direction:column;justify-content:center;animation:fadeUp .55s ease}
@keyframes fadeUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}
.slide h1{font-size:28px;margin-bottom:12px;line-height:1.4;text-shadow:0 2px 12px rgba(0,0,0,.12);letter-spacing:.2px}
.slide p{font-size:16px;opacity:.95;max-width:640px;margin-bottom:20px;text-shadow:0 1px 6px rgba(0,0,0,.1)}
.slide .btn{display:inline-block;background:#fff;color:var(--primary);padding:10px 26px;border-radius:24px;font-weight:600;align-self:flex-start;box-shadow:0 6px 20px rgba(0,0,0,.15);transition:transform .25s,box-shadow .25s,background .25s}
.slide .btn:hover{transform:translateY(-3px) scale(1.03);box-shadow:0 10px 28px rgba(0,0,0,.22);background:#fff;color:var(--primary-dark)}
.slide .btn:active{transform:translateY(-1px) scale(.99)}
.banner-dots{position:absolute;bottom:16px;left:50%;transform:translateX(-50%);display:flex;gap:8px;z-index:3}
.banner-dots span{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.5);cursor:pointer;transition:all .3s}
.banner-dots span:hover{background:rgba(255,255,255,.8);transform:scale(1.15)}
.banner-dots span.active{background:#fff;width:26px;border-radius:5px}
.section{padding:48px 0}
.section-alt{background:var(--bg-alt);transition:background .4s}
.section h2{font-size:24px;margin-bottom:8px;position:relative;padding-left:14px;letter-spacing:.2px}
.section h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;background:linear-gradient(180deg,var(--primary),var(--primary-light));border-radius:2px}
.section .subtitle{color:var(--text-light);margin-bottom:28px;padding-left:14px}
.section h3{font-size:18px;margin:24px 0 10px;color:var(--text)}
.section h4{font-size:16px;margin:16px 0 8px;color:var(--text-light)}
.section p{margin-bottom:14px;color:var(--text-light)}
.grid{display:grid;gap:20px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);transition:transform var(--transition),box-shadow var(--transition),border-color var(--transition);position:relative;overflow:hidden}
.card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--primary),var(--primary-light));transform:scaleX(0);transform-origin:left;transition:transform .35s}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);border-color:var(--primary-glow)}
.card:hover::before{transform:scaleX(1)}
.card h3{margin-top:0;font-size:17px;margin-bottom:8px}
.card p{font-size:14px;margin-bottom:0}
.card .icon{width:48px;height:48px;border-radius:14px;background:linear-gradient(135deg,var(--primary),var(--primary-light));display:flex;align-items:center;justify-content:center;margin-bottom:14px;box-shadow:0 6px 18px var(--primary-glow);transition:transform .3s}
.card:hover .icon{transform:scale(1.08) rotate(-4deg)}
.card .icon svg{width:24px;height:24px}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.stat-num{font-size:34px;font-weight:700;color:var(--primary);line-height:1.2;letter-spacing:-.5px;font-variant-numeric:tabular-nums}
.stat-label{color:var(--text-light);font-size:14px;margin-top:4px}
.article-item{border-bottom:1px solid var(--border);padding:20px 0;transition:padding-left .25s}
.article-item:last-child{border-bottom:none}
.article-item:hover{padding-left:8px}
.article-item h3{font-size:16px;margin:0 0 6px}
.article-item h3 a{color:var(--text);transition:color .2s}
.article-item h3 a:hover{color:var(--primary)}
.article-item .meta{font-size:13px;color:var(--text-muted);margin-bottom:8px}
.article-item p{font-size:14px;margin-bottom:8px}
.article-item .read-more{font-size:14px;font-weight:500;display:inline-block;transition:transform .25s}
.article-item .read-more:hover{transform:translateX(4px)}
.faq-item{border:1px solid var(--border);border-radius:var(--radius);margin-bottom:12px;overflow:hidden;background:var(--card);transition:border-color .3s,box-shadow .3s}
.faq-item:hover{border-color:var(--primary-glow);box-shadow:0 4px 16px rgba(255,107,53,.08)}
.faq-item.open{border-color:var(--primary);box-shadow:0 4px 20px var(--primary-glow)}
.faq-q{padding:16px 20px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;font-size:15px;gap:12px;transition:background .2s}
.faq-q:hover{background:var(--bg-alt)}
.faq-q .arrow{transition:transform .35s;color:var(--primary);flex-shrink:0;font-size:14px}
.faq-item.open .faq-q .arrow{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease,padding .4s ease;padding:0 20px}
.faq-item.open .faq-a{max-height:500px;padding:0 20px 18px}
.faq-a p{font-size:14px;margin:0;color:var(--text-light);line-height:1.8}
.steps{counter-reset:step;list-style:none}
.steps li{position:relative;padding-left:52px;margin-bottom:22px}
.steps li::before{counter-increment:step;content:counter(step);position:absolute;left:0;top:0;width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--primary-light));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;box-shadow:0 4px 12px var(--primary-glow);transition:transform .3s}
.steps li:hover::before{transform:scale(1.1)}
.steps li h4{margin:0 0 6px;color:var(--text);font-size:15px}
.steps li p{font-size:14px;margin:0}
.case-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:22px;transition:transform var(--transition),box-shadow var(--transition),border-color var(--transition)}
.case-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);border-color:var(--primary-glow)}
.case-card .tag{display:inline-block;background:linear-gradient(135deg,rgba(255,107,53,.14),rgba(255,154,86,.14));color:var(--primary);font-size:12px;padding:3px 12px;border-radius:12px;margin-bottom:10px;font-weight:600;border:1px solid rgba(255,107,53,.18)}
.case-card h3{font-size:16px;margin-bottom:8px}
.case-card p{font-size:14px;color:var(--text-light);margin:0}
.testimonial{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:22px;position:relative;transition:transform var(--transition),box-shadow var(--transition),border-color var(--transition)}
.testimonial:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);border-color:var(--primary-glow)}
.testimonial::before{content:"\201C";font-size:52px;color:var(--primary);opacity:.22;position:absolute;top:6px;left:18px;line-height:1;font-family:Georgia,serif}
.testimonial p{font-size:14px;padding-top:20px;color:var(--text-light);margin:0}
.testimonial .who{font-size:13px;color:var(--text-muted);margin-top:10px;font-weight:500}
.footer{background:#0f1117;color:#a0a3ad;padding:48px 0 24px;font-size:14px;transition:background .4s}
[data-theme="dark"] .footer{background:#0a0c11}
.footer h4{color:#fff;font-size:15px;margin-bottom:14px;position:relative;padding-bottom:8px}
.footer h4::after{content:"";position:absolute;bottom:0;left:0;width:24px;height:2px;background:var(--primary);border-radius:1px}
.footer a{color:#a0a3ad;display:block;padding:4px 0;transition:color .2s,padding-left .2s}
.footer a:hover{color:var(--primary);padding-left:4px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.5fr;gap:32px;margin-bottom:32px}
.footer-bottom{border-top:1px solid #2a2e3d;padding-top:20px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:13px}
.back-top{position:fixed;right:24px;bottom:24px;width:46px;height:46px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--primary-light));color:#fff;border:none;cursor:pointer;display:none;align-items:center;justify-content:center;box-shadow:0 6px 20px var(--primary-glow);z-index:999;transition:transform .25s,box-shadow .25s,opacity .3s}
.back-top.show{display:flex;animation:fadeIn .3s ease}
.back-top:hover{transform:translateY(-4px) scale(1.08);box-shadow:0 10px 28px var(--primary-glow)}
.back-top:active{transform:translateY(-2px) scale(.98)}
@keyframes fadeIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}
.reveal.visible{opacity:1;transform:none}
.breadcrumb{font-size:13px;color:var(--text-muted);padding:16px 0}
.breadcrumb a{color:var(--text-muted);transition:color .2s}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb span{margin:0 6px}
.author-box{background:var(--bg-alt);border-radius:var(--radius);padding:18px;font-size:14px;color:var(--text-light);margin-top:20px;border-left:4px solid var(--primary);line-height:1.9;transition:background .4s}
.author-box strong{color:var(--text)}
@media(max-width:900px){
nav.main-nav{display:none}
.menu-btn{display:flex}
.search-box input{width:90px}
.search-box input:focus{width:120px}
.grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}
.footer-grid{grid-template-columns:1fr 1fr}
.stats{grid-template-columns:repeat(2,1fr)}
.slide h1{font-size:22px}
.slide{padding:36px 28px}
.banner{min-height:240px}
.slide{min-height:240px}
.section{padding:36px 0}
}
@media(max-width:600px){
.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
.footer-grid{grid-template-columns:1fr}
.search-box{display:none}
.section{padding:32px 0}
.slide{padding:28px 20px}
.slide h1{font-size:19px}
.slide p{font-size:14px}
.banner{border-radius:var(--radius);min-height:220px}
.slide{min-height:220px}
.section h2{font-size:20px}
.stat-num{font-size:26px}
.back-top{right:16px;bottom:16px;width:42px;height:42px}
.card{padding:20px}
.faq-q{padding:14px 16px;font-size:14px}
.faq-item.open .faq-a{padding:0 16px 16px}
.steps li{padding-left:46px}
.steps li::before{width:32px;height:32px;font-size:14px}
}
@media(prefers-reduced-motion:reduce){
*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
.reveal{opacity:1;transform:none}
}
```