*{margin:0;padding:0;box-sizing:border-box}
:root{--primary:#c0392b;--primary-dark:#a93226;--secondary:#e74c3c;--accent:#f39c12;--bg:#fdf6f0;--bg-alt:#fff8f3;--text:#2c2c2c;--text-light:#666;--border:#e8d5cc;--card:#fff;--shadow:0 2px 16px rgba(192,57,43,.08);--radius:12px;--header-h:64px;--glass:rgba(255,255,255,.72);--glass-border:rgba(255,255,255,.55)}
[data-theme="dark"]{--bg:#1a1a1a;--bg-alt:#242424;--text:#e8e8e8;--text-light:#aaa;--border:#3a3a3a;--card:#2a2a2a;--shadow:0 2px 16px rgba(0,0,0,.3);--glass:rgba(42,42,42,.72);--glass-border:rgba(255,255,255,.12)}
html{scroll-behavior:smooth;scroll-padding-top:72px;-webkit-text-size-adjust:100%}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","WenQuanYi Micro Hei",sans-serif;background:var(--bg);color:var(--text);line-height:1.8;font-size:16px;transition:background .3s,color .3s;overflow-x:hidden}
a{color:var(--primary);text-decoration:none;transition:color .2s}
a:hover{color:var(--primary-dark)}
img,svg{max-width:100%;height:auto;display:block}
.container{max-width:1160px;margin:0 auto;padding:0 20px;width:100%}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--primary);color:#fff;padding:8px 16px;z-index:9999;border-radius:0 0 8px 0}
.skip-link:focus{left:0}
header{position:sticky;top:0;z-index:1000;background:var(--glass);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:0 2px 12px rgba(0,0,0,.06);border-bottom:1px solid var(--glass-border);transition:box-shadow .3s,background .3s}
header.scrolled{box-shadow:0 4px 20px rgba(0,0,0,.12)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:var(--header-h)}
.logo{display:flex;align-items:center;gap:10px;font-size:22px;font-weight:700;color:var(--primary)}
.logo svg{width:36px;height:36px;flex-shrink:0;border-radius:8px}
.logo-text{display:flex;flex-direction:column;line-height:1.2}
.logo-text small{font-size:11px;font-weight:400;color:var(--text-light);letter-spacing:1px}
nav ul{display:flex;list-style:none;gap:4px}
nav a{padding:8px 14px;border-radius:8px;font-size:15px;color:var(--text);font-weight:500;transition:background .2s,color .2s;position:relative}
nav a:hover,nav a.active{background:var(--bg-alt);color:var(--primary)}
.header-actions{display:flex;align-items:center;gap:10px}
.search-box{position:relative;display:flex;align-items:center}
.search-box input{width:180px;padding:8px 36px 8px 12px;border:1px solid var(--border);border-radius:20px;font-size:14px;background:var(--bg-alt);color:var(--text);outline:none;transition:border-color .2s,width .3s,box-shadow .2s}
.search-box input:focus{border-color:var(--primary);width:220px;box-shadow:0 0 0 3px rgba(192,57,43,.12)}
.search-box button{position:absolute;right:6px;background:none;border:none;cursor:pointer;padding:4px;color:var(--text-light);display:flex;transition:color .2s}
.search-box button:hover{color:var(--primary)}
.theme-toggle{background:none;border:1px solid var(--border);border-radius:50%;width:38px;height:38px;cursor:pointer;display:flex;align-items:center;justify-content:center;color:var(--text);transition:background .2s,transform .3s}
.theme-toggle:hover{background:var(--bg-alt);transform:rotate(30deg)}
.menu-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px;color:var(--text)}
.mobile-nav{display:none;position:fixed;top:var(--header-h);left:0;right:0;bottom:0;background:var(--glass);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);z-index:999;padding:20px;overflow-y:auto}
.mobile-nav.open{display:block;animation:slideDown .3s ease}
@keyframes slideDown{from{opacity:0;transform:translateY(-12px)}to{opacity:1;transform:translateY(0)}}
.mobile-nav ul{list-style:none}
.mobile-nav a{display:block;padding:14px 16px;border-bottom:1px solid var(--border);font-size:16px;color:var(--text);border-radius:8px}
.mobile-nav a:hover{background:var(--bg-alt);color:var(--primary)}
.hero{position:relative;background:linear-gradient(135deg,#c0392b 0%,#e74c3c 45%,#f39c12 100%);color:#fff;padding:60px 0 50px;overflow:hidden}
.hero::before{content:'';position:absolute;inset:0;background:radial-gradient(circle at 80% 20%,rgba(255,234,167,.25),transparent 55%),radial-gradient(circle at 10% 80%,rgba(255,255,255,.14),transparent 50%);pointer-events:none}
.hero::after{content:'';position:absolute;bottom:-2px;left:0;right:0;height:60px;background:var(--bg);clip-path:ellipse(70% 100% at 50% 100%)}
.hero-inner{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;position:relative;z-index:1}
.hero-text h1{font-size:clamp(26px,4vw,42px);line-height:1.35;margin-bottom:16px;font-weight:800}
.hero-text h1 em{font-style:normal;color:#ffeaa7;text-decoration:underline;text-decoration-color:rgba(255,234,167,.5);text-underline-offset:6px}
.hero-text p{font-size:17px;opacity:.95;margin-bottom:24px;line-height:1.9}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border-radius:28px;font-size:16px;font-weight:600;cursor:pointer;border:none;transition:transform .25s,box-shadow .25s,background .25s;text-decoration:none}
.btn-primary{background:#fff;color:var(--primary)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 10px 28px rgba(0,0,0,.22);color:var(--primary-dark)}
.btn-outline{background:rgba(255,255,255,.08);color:#fff;border:2px solid rgba(255,255,255,.7);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}
.btn-outline:hover{background:rgba(255,255,255,.2);color:#fff;transform:translateY(-3px)}
.hero-visual{display:flex;justify-content:center;align-items:center}
.hero-visual svg{width:100%;max-width:420px;filter:drop-shadow(0 12px 32px rgba(0,0,0,.2));animation:floatY 6s ease-in-out infinite}
@keyframes floatY{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}
.hero-stats{display:flex;gap:32px;margin-top:32px;flex-wrap:wrap}
.stat-item{text-align:center}
.stat-num{font-size:32px;font-weight:800;color:#ffeaa7;display:block}
.stat-label{font-size:13px;opacity:.85}
section{padding:60px 0;position:relative}
section:nth-child(even){background:var(--bg-alt)}
.section-header{text-align:center;margin-bottom:44px}
.section-header h2{font-size:clamp(22px,3vw,32px);font-weight:800;margin-bottom:12px;position:relative;display:inline-block}
.section-header h2::after{content:'';position:absolute;bottom:-8px;left:50%;transform:translateX(-50%);width:60px;height:3px;background:linear-gradient(90deg,var(--primary),var(--accent));border-radius:2px}
.section-header p{color:var(--text-light);font-size:16px;max-width:640px;margin:16px auto 0}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-light);padding:12px 0;flex-wrap:wrap}
.breadcrumb a{color:var(--text-light)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb span{color:var(--text)}
.cards-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px}
.card{background:var(--card);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);border:1px solid var(--border);transition:transform .35s cubic-bezier(.2,.8,.2,1),box-shadow .35s,border-color .35s;position:relative;overflow:hidden}
.card::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 .35s}
.card:hover{transform:translateY(-6px);box-shadow:0 12px 36px rgba(192,57,43,.16);border-color:rgba(192,57,43,.25)}
.card:hover::before{transform:scaleX(1)}
.card-icon{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;margin-bottom:16px;font-size:24px;transition:transform .35s}
.card:hover .card-icon{transform:scale(1.08) rotate(-4deg)}
.card h3{font-size:19px;margin-bottom:10px;font-weight:700}
.card p{color:var(--text-light);font-size:15px;line-height:1.8}
.card ul{list-style:none;margin-top:12px}
.card ul li{padding:6px 0 6px 22px;position:relative;font-size:15px;color:var(--text-light)}
.card ul li::before{content:'✓';position:absolute;left:0;color:var(--primary);font-weight:700}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.about-text h2{font-size:clamp(22px,3vw,30px);font-weight:800;margin-bottom:20px}
.about-text p{margin-bottom:16px;color:var(--text-light);line-height:1.9}
.about-visual{display:flex;justify-content:center}
.about-visual svg{width:100%;max-width:380px;transition:transform .5s}
.about-visual:hover svg{transform:scale(1.03)}
.timeline{position:relative;padding-left:32px;margin-top:24px}
.timeline::before{content:'';position:absolute;left:8px;top:0;bottom:0;width:2px;background:linear-gradient(180deg,var(--primary),var(--accent))}
.timeline-item{position:relative;margin-bottom:28px}
.timeline-item::before{content:'';position:absolute;left:-28px;top:6px;width:12px;height:12px;border-radius:50%;background:var(--primary);border:3px solid var(--bg);transition:transform .3s}
.timeline-item:hover::before{transform:scale(1.35)}
.timeline-item h4{font-size:16px;font-weight:700;margin-bottom:6px}
.timeline-item p{font-size:14px;color:var(--text-light)}
.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px}
.feature-item{background:var(--card);border-radius:var(--radius);padding:24px;text-align:center;border:1px solid var(--border);transition:transform .35s cubic-bezier(.2,.8,.2,1),box-shadow .35s}
.feature-item:hover{transform:translateY(-6px);box-shadow:0 12px 30px rgba(192,57,43,.14)}
.feature-item .icon{width:56px;height:56px;margin:0 auto 14px;border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:26px;transition:transform .35s}
.feature-item:hover .icon{transform:scale(1.1)}
.feature-item h4{font-size:16px;margin-bottom:8px}
.feature-item p{font-size:14px;color:var(--text-light)}
.case-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:24px}
.case-card{background:var(--card);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--border);transition:transform .35s cubic-bezier(.2,.8,.2,1),box-shadow .35s}
.case-card:hover{transform:translateY(-6px);box-shadow:0 14px 38px rgba(192,57,43,.16)}
.case-img{height:180px;display:flex;align-items:center;justify-content:center;overflow:hidden}
.case-img svg{transition:transform .5s}
.case-card:hover .case-img svg{transform:scale(1.12) rotate(3deg)}
.case-body{padding:24px}
.case-body h3{font-size:18px;margin-bottom:10px}
.case-body p{font-size:14px;color:var(--text-light);line-height:1.8}
.case-tag{display:inline-block;padding:3px 12px;border-radius:12px;font-size:12px;font-weight:600;margin-bottom:10px}
.testimonial-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px}
.testimonial{background:var(--card);border-radius:var(--radius);padding:28px;border:1px solid var(--border);box-shadow:var(--shadow);position:relative;transition:transform .35s,box-shadow .35s}
.testimonial:hover{transform:translateY(-5px);box-shadow:0 12px 32px rgba(192,57,43,.14)}
.testimonial::before{content:'"';position:absolute;top:12px;left:20px;font-size:60px;color:var(--primary);opacity:.15;font-family:Georgia,serif;line-height:1}
.testimonial p{font-size:15px;color:var(--text-light);line-height:1.9;margin-bottom:16px;position:relative;z-index:1}
.testimonial-author{display:flex;align-items:center;gap:12px}
.testimonial-avatar{width:44px;height:44px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;color:#fff;font-size:16px;flex-shrink:0}
.testimonial-info strong{display:block;font-size:15px}
.testimonial-info small{color:var(--text-light);font-size:13px}
.articles-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:24px}
.article-card{background:var(--card);border-radius:var(--radius);padding:24px;border:1px solid var(--border);box-shadow:var(--shadow);transition:transform .35s cubic-bezier(.2,.8,.2,1),box-shadow .35s;display:flex;flex-direction:column}
.article-card:hover{transform:translateY(-6px);box-shadow:0 12px 34px rgba(192,57,43,.15)}
.article-meta{display:flex;gap:12px;font-size:13px;color:var(--text-light);margin-bottom:10px;flex-wrap:wrap}
.article-card h3{font-size:17px;margin-bottom:10px;line-height:1.5;transition:color .25s}
.article-card:hover h3{color:var(--primary)}
.article-card p{font-size:14px;color:var(--text-light);line-height:1.8;flex:1}
.article-link{margin-top:14px;font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:4px;transition:gap .25s}
.article-link:hover{gap:10px}
.faq-list{max-width:860px;margin:0 auto}
.faq-item{background:var(--card);border-radius:var(--radius);margin-bottom:12px;border:1px solid var(--border);overflow:hidden;transition:box-shadow .3s,border-color .3s}
.faq-item.open{box-shadow:0 4px 20px rgba(192,57,43,.1);border-color:rgba(192,57,43,.3)}
.faq-q{width:100%;padding:20px 24px;display:flex;justify-content:space-between;align-items:center;cursor:pointer;background:none;border:none;font-size:16px;font-weight:600;color:var(--text);text-align:left;font-family:inherit;gap:16px;transition:background .2s}
.faq-q:hover{background:var(--bg-alt)}
.faq-q .arrow{transition:transform .35s;flex-shrink:0;color:var(--primary)}
.faq-item.open .faq-q .arrow{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease,padding .3s}
.faq-item.open .faq-a{max-height:600px}
.faq-a-inner{padding:0 24px 20px;font-size:15px;color:var(--text-light);line-height:1.9}
.howto-steps{counter-reset:step;max-width:800px;margin:0 auto}
.howto-step{position:relative;padding:0 0 32px 68px;counter-increment:step}
.howto-step::before{content:counter(step);position:absolute;left:0;top:0;width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:18px;box-shadow:0 4px 12px rgba(192,57,43,.3);transition:transform .3s}
.howto-step:hover::before{transform:scale(1.1)}
.howto-step:not(:last-child)::after{content:'';position:absolute;left:21px;top:48px;bottom:0;width:2px;background:var(--border)}
.howto-step h4{font-size:17px;margin-bottom:8px;font-weight:700}
.howto-step p{font-size:15px;color:var(--text-light);line-height:1.8}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.contact-info{display:flex;flex-direction:column;gap:20px}
.contact-item{display:flex;gap:16px;align-items:flex-start;padding:14px;border-radius:12px;transition:background .25s}
.contact-item:hover{background:var(--bg-alt)}
.contact-icon{width:44px;height:44px;border-radius:12px;background:var(--bg-alt);display:flex;align-items:center;justify-content:center;flex-shrink:0;color:var(--primary);transition:transform .3s}
.contact-item:hover .contact-icon{transform:scale(1.08)}
.contact-item h4{font-size:15px;margin-bottom:4px}
.contact-item p{font-size:14px;color:var(--text-light)}
.contact-form{display:flex;flex-direction:column;gap:16px;background:var(--card);padding:28px;border-radius:var(--radius);border:1px solid var(--border);box-shadow:var(--shadow)}
.contact-form input,.contact-form textarea{padding:12px 16px;border:1px solid var(--border);border-radius:10px;font-size:15px;font-family:inherit;background:var(--bg-alt);color:var(--text);outline:none;transition:border-color .2s,box-shadow .2s}
.contact-form input:focus,.contact-form textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(192,57,43,.12)}
.contact-form textarea{min-height:120px;resize:vertical}
.contact-form button{align-self:flex-start}
.map-placeholder{background:var(--bg-alt);border-radius:var(--radius);height:200px;display:flex;align-items:center;justify-content:center;border:1px dashed var(--border);color:var(--text-light);font-size:14px;margin-top:20px;padding:16px;text-align:center;transition:border-color .3s}
.map-placeholder:hover{border-color:var(--primary)}
.footer{background:#1a1a1a;color:#ccc;padding:60px 0 0}
[data-theme="dark"] .footer{background:#0d0d0d}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer h4{color:#fff;font-size:16px;margin-bottom:16px}
.footer p{font-size:14px;line-height:1.9;color:#999}
.footer ul{list-style:none}
.footer ul li{margin-bottom:10px}
.footer ul a{color:#999;font-size:14px;transition:color .2s,padding-left .2s}
.footer ul a:hover{color:var(--accent);padding-left:4px}
.footer-bottom{border-top:1px solid #333;padding:24px 0;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px;font-size:13px;color:#777}
.footer-bottom a{color:#999}
.footer-bottom a:hover{color:var(--accent)}
.back-top{position:fixed;bottom:28px;right:28px;width:48px;height:48px;border-radius:50%;background:var(--primary);color:#fff;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 16px rgba(192,57,43,.4);opacity:0;visibility:hidden;transition:opacity .3s,visibility .3s,transform .3s;z-index:900}
.back-top.show{opacity:1;visibility:visible}
.back-top:hover{transform:translateY(-5px) scale(1.05)}
.reveal{opacity:0;transform:translateY(30px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.8,.2,1)}
.reveal.visible{opacity:1;transform:translateY(0)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}
@media(max-width:900px){
.hero-inner{grid-template-columns:1fr;text-align:center}
.hero-visual{order:-1}
.hero-cta{justify-content:center}
.hero-stats{justify-content:center}
.about-grid{grid-template-columns:1fr}
.contact-grid{grid-template-columns:1fr}
.footer-grid{grid-template-columns:1fr 1fr}
nav ul{display:none}
.menu-toggle{display:flex}
.search-box input{width:140px}
}
@media(max-width:600px){
.footer-grid{grid-template-columns:1fr}
.hero{padding:40px 0 30px}
section{padding:40px 0}
.search-box input{width:100px}
.search-box input:focus{width:140px}
.hero-stats{gap:20px}
.stat-num{font-size:26px}
.contact-form{padding:20px}
.card{padding:22px}
}
@media(prefers-reduced-motion:reduce){
*{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
.reveal{opacity:1;transform:none}
}