*{margin:0;padding:0;box-sizing:border-box;font-family:system-ui,-apple-system,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;}
body{background:#f7f8fa;color:#2C3E50;line-height:1.7;}
.hero{position:relative;width:100%;min-height:85vh;display:flex;align-items:center;justify-content:center;text-align:center;overflow:hidden;}
.hero-bg{position:absolute;inset:0;background:url('/images/42.jpg') center/cover no-repeat;transform:scale(1.05);}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(135deg,rgba(44,62,80,0.92) 30%,rgba(44,62,80,0.6) 100%);}
.hero-content{position:relative;z-index:2;max-width:950px;padding:30px 24px;}
.hero h1{font-size:clamp(2.4rem,7vw,4.2rem);font-weight:700;color:#fff;letter-spacing:1px;margin-bottom:20px;line-height:1.2;text-shadow:0 4px 20px rgba(0,0,0,0.3);}
.hero .sub{font-size:clamp(1rem,2.5vw,1.4rem);color:rgba(255,255,255,0.9);max-width:720px;margin:0 auto 28px;font-weight:300;letter-spacing:0.5px;}
.hero .tag{display:inline-block;background:#E87722;color:#fff;padding:10px 30px;border-radius:40px;font-size:1rem;font-weight:600;letter-spacing:1px;box-shadow:0 8px 30px rgba(232,119,34,0.35);}
.container{max-width:1200px;margin:0 auto;padding:70px 24px;}
.section-title{font-size:clamp(1.6rem,4vw,2.4rem);font-weight:700;color:#2C3E50;margin-bottom:18px;position:relative;display:inline-block;}
.section-title:after{content:'';display:block;width:60px;height:4px;background:#E87722;margin-top:10px;border-radius:4px;}
.section-sub{font-size:1.05rem;color:#5a6a7a;max-width:800px;margin-bottom:45px;}
.bg-white{background:#fff;}
.bg-light{background:#f2f4f7;}
.two-col{display:flex;flex-wrap:wrap;gap:50px;align-items:center;}
.two-col .col{flex:1 1 300px;}
.two-col .col img{width:100%;height:auto;border-radius:12px;box-shadow:0 12px 40px rgba(0,0,0,0.1);display:block;aspect-ratio:600/450;object-fit:cover;}
.two-col .col p{font-size:1.05rem;color:#3d4a5c;margin-bottom:18px;}
.factor-card{display:flex;flex-wrap:wrap;gap:40px;align-items:center;padding:35px 0;border-bottom:1px solid #e6e9ed;}
.factor-card:last-child{border-bottom:none;}
.factor-card.reverse{flex-direction:row-reverse;}
.factor-card .fc-img{flex:1 1 300px;}
.factor-card .fc-img img{width:100%;height:auto;border-radius:10px;box-shadow:0 8px 30px rgba(0,0,0,0.08);display:block;aspect-ratio:600/450;object-fit:cover;}
.factor-card .fc-text{flex:1 1 350px;}
.factor-card h3{font-size:1.25rem;color:#E87722;font-weight:700;margin-bottom:8px;letter-spacing:0.3px;}
.factor-card h3 span{color:#2C3E50;font-weight:300;margin-right:8px;}
.factor-card p{font-size:1rem;color:#3d4a5c;line-height:1.8;}
.solution-grid{display:flex;flex-wrap:wrap;gap:30px;margin-top:30px;}
.solution-item{flex:1 1 280px;background:#fff;border-radius:12px;padding:30px 28px;box-shadow:0 6px 25px rgba(44,62,80,0.06);border-top:4px solid #E87722;transition:transform 0.2s;}
.solution-item:hover{transform:translateY(-4px);}
.solution-item .icon{font-size:2.2rem;margin-bottom:12px;display:block;}
.solution-item h4{font-size:1.15rem;color:#2C3E50;font-weight:700;margin-bottom:10px;}
.solution-item p{font-size:0.95rem;color:#5a6a7a;line-height:1.7;}
.solution-show{display:flex;flex-wrap:wrap;gap:50px;align-items:center;margin-top:50px;}
.solution-show .ss-img{flex:1 1 380px;}
.solution-show .ss-img img{width:100%;height:auto;border-radius:12px;box-shadow:0 12px 40px rgba(0,0,0,0.1);display:block;aspect-ratio:600/450;object-fit:cover;}
.solution-show .ss-text{flex:1 1 350px;}
.solution-show .ss-text ul{list-style:none;padding:0;}
.solution-show .ss-text li{position:relative;padding:10px 0 10px 32px;font-size:1rem;color:#3d4a5c;border-bottom:1px solid #f0f2f5;}
.solution-show .ss-text li:last-child{border-bottom:none;}
.solution-show .ss-text li::before{content:'▸';position:absolute;left:0;color:#E87722;font-weight:700;font-size:1.3rem;}
.case-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:24px;margin-top:20px;}
.case-grid .case-item{border-radius:10px;overflow:hidden;box-shadow:0 6px 20px rgba(0,0,0,0.06);background:#fff;transition:transform 0.2s;}
.case-grid .case-item:hover{transform:translateY(-3px);}
.case-grid .case-item img{width:100%;height:auto;display:block;aspect-ratio:600/450;object-fit:cover;}
.case-grid .case-item .case-label{padding:14px 18px;font-size:0.95rem;color:#2C3E50;font-weight:500;background:#fff;}
@media(max-width:768px){
.hero{min-height:70vh;}
.container{padding:45px 18px;}
.two-col{gap:30px;}
.factor-card{gap:25px;padding:25px 0;}
.factor-card.reverse{flex-direction:column;}
.factor-card{flex-direction:column;}
.solution-grid{gap:20px;}
.solution-show{gap:30px;}
.case-grid{grid-template-columns:repeat(auto-fill,minmax(200px,1fr));}
}
@media(max-width:480px){
.hero h1{font-size:2rem;}
.hero .sub{font-size:0.95rem;}
.container{padding:30px 14px;}
.section-title{font-size:1.4rem;}
.case-grid{grid-template-columns:1fr 1fr;}
}

.kuang-nav { position:sticky; top:0; z-index:1000; background:#fff; border-bottom:2px solid #E87722; box-shadow:0 2px 12px rgba(0,0,0,0.06); }
.kuang-nav-inner { max-width:1200px; margin:0 auto; display:flex; align-items:center; justify-content:space-between; height:60px; padding:0 24px; }
.kuang-nav-brand { display:flex; align-items:center; gap:10px; text-decoration:none; flex-shrink:0; }
.kuang-nav-brand-icon { width:36px; height:36px; background:#E87722; border-radius:8px; display:flex; align-items:center; justify-content:center; color:#fff; font-weight:700; font-size:18px; }
.kuang-nav-brand-text { font-size:17px; font-weight:700; color:#2C3E50; }
.kuang-nav-links { display:flex; align-items:center; gap:2px; list-style:none; }
.kuang-nav-links a { display:block; padding:8px 16px; font-size:15px; font-weight:500; color:#3d4a5a; text-decoration:none; border-radius:6px; transition:color 0.2s,background 0.2s; white-space:nowrap; }
.kuang-nav-links a:hover, .kuang-nav-links a.kuang-active { color:#E87722; background:rgba(232,119,34,0.07); }
.kuang-nav-phone { display:flex; align-items:center; gap:6px; font-size:15px; font-weight:600; color:#E87722; text-decoration:none; flex-shrink:0; transition:opacity 0.2s; }
.kuang-nav-phone:hover { opacity:0.75; }
.kuang-hamburger { display:none; flex-direction:column; justify-content:center; align-items:center; width:40px; height:40px; cursor:pointer; border:none; background:transparent; gap:5px; -webkit-tap-highlight-color:transparent; }
.kuang-hamburger span { display:block; width:22px; height:2px; background:#2C3E50; border-radius:2px; transition:transform 0.3s,opacity 0.3s; }
.kuang-hamburger.kuang-open span:nth-child(1) { transform:rotate(45deg) translate(5px,5px); }
.kuang-hamburger.kuang-open span:nth-child(2) { opacity:0; }
.kuang-hamburger.kuang-open span:nth-child(3) { transform:rotate(-45deg) translate(5px,-5px); }
.kuang-mobile-menu { display:none; position:fixed; top:60px; left:0; right:0; background:#fff; border-bottom:2px solid #E87722; box-shadow:0 8px 24px rgba(0,0,0,0.1); z-index:999; padding:8px 0; transform:translateY(-8px); opacity:0; transition:transform 0.3s ease,opacity 0.3s ease; }
.kuang-mobile-menu.kuang-show { display:block; transform:translateY(0); opacity:1; }
.kuang-mobile-menu a { display:block; padding:12px 24px; font-size:16px; font-weight:500; color:#3d4a5a; text-decoration:none; border-left:3px solid transparent; transition:all 0.2s; }
.kuang-mobile-menu a:hover, .kuang-mobile-menu a.kuang-active { color:#E87722; background:rgba(232,119,34,0.05); border-left-color:#E87722; }
.kuang-mobile-menu .kuang-mob-phone { display:flex; align-items:center; gap:8px; padding:14px 24px; font-size:16px; font-weight:600; color:#E87722; text-decoration:none; border-top:1px solid #eee; margin-top:4px; }


.kuang-footer { background:#1a2332; color:#c0c8d4; }
.kuang-footer-inner { max-width:1200px; margin:0 auto; padding:44px 24px 0; }
.kuang-footer-top { display:flex; gap:48px; flex-wrap:wrap; padding-bottom:32px; border-bottom:1px solid rgba(255,255,255,0.08); }
.kuang-footer-brand { flex:1 1 260px; min-width:220px; }
.kuang-footer-brand-row { display:flex; align-items:center; gap:10px; margin-bottom:12px; }
.kuang-footer-brand-icon { width:36px; height:36px; background:#E87722; border-radius:8px; display:flex; align-items:center; justify-content:center; color:#fff; font-weight:700; font-size:17px; flex-shrink:0; }
.kuang-footer-brand-name { font-size:18px; font-weight:700; color:#e8ecf0; }
.kuang-footer-brand p { font-size:14px; line-height:1.7; color:#7a8a9a; margin-bottom:14px; }
.kuang-footer-contact { display:flex; flex-direction:column; }
.kuang-footer-contact a { display:inline-flex; align-items:center; gap:6px; color:#E87722; text-decoration:none; font-size:14px; font-weight:500; margin-bottom:6px; transition:opacity 0.2s; }
.kuang-footer-contact a:hover { opacity:0.75; }
.kuang-footer-nav { flex:0 1 170px; min-width:140px; }
.kuang-footer-nav h3 { font-size:14px; font-weight:600; color:#e8ecf0; margin-bottom:16px; text-transform:uppercase; letter-spacing:0.5px; }
.kuang-footer-nav ul { list-style:none; }
.kuang-footer-nav ul li { margin-bottom:10px; }
.kuang-footer-nav ul li a { font-size:14px; color:#7a8a9a; text-decoration:none; transition:color 0.2s,transform 0.2s; display:inline-block; }
.kuang-footer-nav ul li a:hover { color:#E87722; transform:translateX(3px); }
.kuang-footer-news { flex:1 1 320px; min-width:260px; }
.kuang-footer-news h3 { font-size:14px; font-weight:600; color:#e8ecf0; margin-bottom:16px; text-transform:uppercase; letter-spacing:0.5px; }
.kuang-news-list { display:flex; flex-direction:column; }
.kuang-news-list a { display:block; padding:9px 14px 9px 24px; font-size:14px; color:#7a8a9a; text-decoration:none; border-radius:5px; position:relative; line-height:1.5; transition:color 0.2s,background 0.2s; }
.kuang-news-list a::before { content:""; position:absolute; left:10px; top:50%; transform:translateY(-50%); width:5px; height:5px; background:#3a4a5e; border-radius:50%; transition:background 0.2s; }
.kuang-news-list a:hover { color:#E87722; background:rgba(232,119,34,0.06); }
.kuang-news-list a:hover::before { background:#E87722; }
.kuang-news-list a + a { border-top:1px solid rgba(255,255,255,0.04); }
.kuang-footer-bottom { display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:10px; padding:18px 0 22px; }
.kuang-footer-bottom p { font-size:13px; color:#4e5a6a; margin:0; }
.kuang-footer-bottom-links { display:flex; gap:18px; }
.kuang-footer-bottom-links a { font-size:13px; color:#4e5a6a; text-decoration:none; transition:color 0.2s; }
.kuang-footer-bottom-links a:hover { color:#E87722; }


.kuang-back-top { position:fixed; bottom:28px; right:28px; width:44px; height:44px; background:#E87722; color:#fff; border:none; border-radius:10px; cursor:pointer; display:flex; align-items:center; justify-content:center; box-shadow:0 4px 16px rgba(232,119,34,0.35); opacity:0; transform:translateY(12px); transition:all 0.3s ease; z-index:800; -webkit-tap-highlight-color:transparent; }
.kuang-back-top.kuang-visible { opacity:1; transform:translateY(0); }
.kuang-back-top:hover { background:#d06a1a; transform:translateY(-2px); }


@media (max-width:1024px) { .kuang-footer-top { gap:32px; } }
@media (max-width:768px) {
 .kuang-nav-links { display:none; }
 .kuang-nav-phone { display:none; }
 .kuang-hamburger { display:flex; }
 .kuang-footer-inner { padding:32px 20px 0; }
 .kuang-footer-top { flex-direction:column; gap:28px; }
 .kuang-footer-brand, .kuang-footer-nav, .kuang-footer-news { flex:1 1 100%; min-width:0; }
 .kuang-footer-bottom { flex-direction:column; text-align:center; }
}
@media (max-width:480px) {
 .kuang-nav-inner { padding:0 14px; height:54px; }
 .kuang-nav-brand-text { font-size:15px; }
 .kuang-nav-brand-icon { width:30px; height:30px; font-size:15px; border-radius:6px; }
 .kuang-mobile-menu { top:54px; }
 .kuang-footer-inner { padding:26px 14px 0; }
 .kuang-news-list a { font-size:13px; padding:8px 10px 8px 20px; }
 .kuang-news-list a::before { left:6px; width:4px; height:4px; }
 .kuang-back-top { width:38px; height:38px; bottom:16px; right:14px; border-radius:8px; }
}