:root {
  --primary: #1193d4;
  --primary-dark: #0d7ab5;
  --primary-light: #e8f4fd;
  --primary-gradient: linear-gradient(135deg, #1193d4 0%, #0d7ab5 100%);
  --accent: #f59e0b;
  --accent-light: #fef3c7;
  --dark: #0f172a;
  --slate-800: #1e293b;
  --slate-600: #475569;
  --slate-400: #94a3b8;
  --slate-200: #e2e8f0;
  --slate-50: #f8fafc;
  --white: #ffffff;
  --shadow-sm: 0 1px 2px rgba(0,0,0,.05);
  --shadow: 0 4px 6px -1px rgba(0,0,0,.07),0 2px 4px -2px rgba(0,0,0,.05);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,.08),0 4px 6px -4px rgba(0,0,0,.04);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,.08),0 8px 10px -6px rgba(0,0,0,.04);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
  --transition: all .25s cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,"Microsoft YaHei","PingFang SC",Arial,sans-serif;font-size:15px;line-height:1.7;color:var(--slate-600);background:var(--white);overflow-x:hidden;-webkit-font-smoothing:antialiased}
a{color:var(--primary);text-decoration:none;transition:var(--transition)}
a:hover{color:var(--primary-dark)}
img{max-width:100%;height:auto;display:block}
ul,ol{padding-left:0;list-style:none;margin:0}
h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.25;color:var(--dark);margin:0 0 .5em}
h1{font-size:clamp(28px,4vw,44px)}h2{font-size:clamp(22px,3vw,32px)}h3{font-size:18px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.row{display:flex;flex-wrap:wrap;margin:0 -12px}
.col-6{width:50%;padding:0 12px}
@media(max-width:767px){.col-6{width:100%}}
.text-center{text-align:center}

/* ============ HEADER ============ */
.site-header{position:fixed;top:0;left:0;right:0;z-index:1000;height:68px;transition:var(--transition);background:rgba(255,255,255,.85);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid transparent}
.site-header.scrolled{border-bottom-color:var(--slate-200);box-shadow:var(--shadow-sm)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{display:flex;align-items:center}
.logo img{height:34px;transition:var(--transition)}
nav{display:flex;align-items:center}
.main-nav{display:flex;align-items:center;gap:2px}
.main-nav>li{position:relative}
.main-nav>li>a{display:flex;align-items:center;padding:0 16px;height:42px;font-size:14px;font-weight:500;color:var(--slate-600);border-radius:var(--radius-sm);transition:var(--transition);letter-spacing:.02em}
.main-nav>li>a:hover{color:var(--primary);background:var(--primary-light)}
.main-nav>li.active>a{color:var(--primary);background:var(--primary-light);font-weight:600}
.main-nav li.has-child>a::after{content:"";display:inline-block;width:6px;height:6px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(45deg);margin-left:6px;margin-top:-3px;opacity:.6}
.sub-menu{position:absolute;top:100%;left:8px;background:var(--white);min-width:220px;border-radius:var(--radius);box-shadow:var(--shadow-lg);opacity:0;visibility:hidden;transform:translateY(8px);transition:var(--transition);z-index:999;padding:6px;border:1px solid var(--slate-200)}
.main-nav li:hover>.sub-menu{opacity:1;visibility:visible;transform:translateY(4px)}
.sub-menu li a{display:block;padding:9px 14px;font-size:13px;color:var(--slate-600);border-radius:6px;transition:var(--transition)}
.sub-menu li a:hover{background:var(--primary-light);color:var(--primary)}
.sub-menu li.active a{color:var(--primary);font-weight:600}
.mobile-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px}
.mobile-toggle span{display:block;width:22px;height:2px;background:var(--slate-800);border-radius:2px;transition:var(--transition)}
@media(max-width:991px){
.main-nav{display:none}
.mobile-toggle{display:flex}
.main-nav.open{display:flex;flex-direction:column;position:fixed;top:68px;left:0;right:0;background:var(--white);box-shadow:var(--shadow-lg);padding:12px;max-height:calc(100vh - 68px);overflow-y:auto;gap:2px}
.main-nav.open>li>a{height:42px;padding:0 14px}
.sub-menu{position:static;box-shadow:none;opacity:1;visibility:visible;transform:none;border:none;padding:0 0 0 16px;display:none}
.main-nav.open li.has-child:hover>.sub-menu{display:block}
}

/* ============ PAGE HERO ============ */
.page-hero{position:relative;padding:120px 0 60px;overflow:hidden;background:var(--dark)}
.page-hero-bg{position:absolute;inset:0;background:linear-gradient(135deg,#0f172a 0%,#1e293b 50%,#1193d4 150%);opacity:.3}
.page-hero-bg::before{content:'';position:absolute;inset:0;background-image:radial-gradient(circle at 20% 50%,rgba(17,147,212,.15) 0,transparent 50%),radial-gradient(circle at 80% 20%,rgba(245,158,11,.08) 0,transparent 50%);}
.page-hero .container{position:relative;z-index:1}
.page-hero h1{color:var(--white);font-size:clamp(26px,3.5vw,38px);font-weight:800;margin:0 0 12px}
.page-hero .breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--slate-400)}
.page-hero .breadcrumb a{color:var(--slate-400)}
.page-hero .breadcrumb a:hover{color:var(--white)}

/* ============ CONTENT ============ */
.content-section{padding:80px 0}
.content-section:last-child{padding-bottom:100px}
.section-heading{color:var(--dark);margin-bottom:24px;padding-bottom:16px;position:relative}
.section-heading::after{content:'';position:absolute;bottom:0;left:0;width:48px;height:3px;background:var(--primary-gradient);border-radius:2px}
.text-body{font-size:15px;line-height:1.8;color:var(--slate-600);margin-bottom:20px}
.text-body:last-child{margin-bottom:0}

/* ============ CARDS ============ */
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:24px;margin-top:32px}
.card{background:var(--white);border:1px solid var(--slate-200);border-radius:var(--radius);padding:32px 28px;transition:var(--transition)}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:transparent}
.card-icon{font-size:36px;margin-bottom:16px;line-height:1}
.card h3{font-size:17px;color:var(--dark);margin-bottom:8px}
.card p{font-size:14px;color:var(--slate-600);line-height:1.7;margin:0}

/* ============ ICON ROWS ============ */
.icon-row{display:flex;align-items:flex-start;gap:18px;padding:20px 0;border-bottom:1px solid var(--slate-200)}
.icon-row:last-child{border-bottom:none}
.icon-row-icon{font-size:32px;flex-shrink:0;line-height:1;margin-top:2px}
.icon-row h3{font-size:16px;margin-bottom:4px;color:var(--dark)}
.icon-row p{font-size:14px;color:var(--slate-600);margin:0;line-height:1.6}

/* ============ HERO SECTION ============ */
.home-hero{min-height:100vh;display:flex;align-items:center;position:relative;overflow:hidden;background:var(--dark);padding-top:68px}
.home-hero-bg{position:absolute;inset:0;overflow:hidden}
.home-hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.3}
.home-hero-bg::after{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(15,23,42,.85) 0%,rgba(15,23,42,.6) 50%,rgba(17,147,212,.25) 100%)}
.home-hero-pattern{position:absolute;inset:0;background-image:radial-gradient(circle at 25% 40%,rgba(17,147,212,.12) 0,transparent 50%),radial-gradient(circle at 75% 60%,rgba(245,158,11,.08) 0,transparent 50%);z-index:1}
.home-hero .container{position:relative;z-index:2;padding:80px 20px}
.home-hero-content{max-width:680px}
.home-hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(17,147,212,.15);color:#60b5e8;font-size:13px;font-weight:500;padding:6px 16px;border-radius:100px;margin-bottom:24px;border:1px solid rgba(17,147,212,.2)}
.home-hero-title{font-size:clamp(28px,4.5vw,48px);font-weight:800;color:var(--white);line-height:1.3;margin-bottom:20px;white-space:nowrap}
.home-hero-title .highlight{background:var(--primary-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.home-hero-subtitle{font-size:clamp(16px,1.5vw,19px);color:var(--slate-400);line-height:1.7;margin-bottom:36px;max-width:560px}
.home-hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 32px;border-radius:100px;font-size:15px;font-weight:600;transition:var(--transition);cursor:pointer;border:none;text-decoration:none}
.btn-primary{background:var(--primary-gradient);color:var(--white);box-shadow:0 4px 14px rgba(17,147,212,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(17,147,212,.4);color:var(--white)}
.btn-outline{background:transparent;color:var(--white);border:1.5px solid rgba(255,255,255,.25)}
.btn-outline:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.4);color:var(--white)}
.btn-sm{padding:10px 20px;font-size:13px}

/* hero scroll hint */
.scroll-hint{position:absolute;bottom:30px;left:50%;transform:translateX(-50%);z-index:2;display:flex;flex-direction:column;align-items:center;gap:8px;color:var(--slate-400);font-size:12px;opacity:.5}
.scroll-hint-line{width:1px;height:40px;background:var(--slate-400);animation:scrollPulse 2s ease-in-out infinite}
@keyframes scrollPulse{0%,100%{opacity:.3;transform:scaleY(1)}50%{opacity:1;transform:scaleY(1.2)}}

/* ============ SECTIONS ============ */
.section{padding:100px 0}
.section-alt{background:var(--slate-50)}
.section-primary{background:var(--dark);position:relative;overflow:hidden}
.section-primary::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,var(--dark) 0%,rgba(17,147,212,.1) 100%)}
.section-primary .container{position:relative;z-index:1}
.section-primary .stats-row .stat-number{color:var(--white)}
.section-primary .stats-row .stat-label{color:var(--slate-400)}
.section-title{text-align:center;margin-bottom:56px}
.section-title h2{color:var(--dark);margin-bottom:12px}
.section-title p{color:var(--slate-400);font-size:16px;max-width:560px;margin:0 auto;line-height:1.6}
.section-primary .section-title h2{color:var(--white)}
.section-primary .section-title p{color:var(--slate-400)}

/* ============ STATS ============ */
.stats-row{display:flex;justify-content:center;gap:60px;flex-wrap:wrap;text-align:center}
.stat-item{padding:16px}
.stat-number{font-size:48px;font-weight:800;color:var(--primary);line-height:1;letter-spacing:-.02em}
.stat-label{font-size:15px;color:var(--slate-400);margin-top:8px;font-weight:500}

/* ============ CLIENTS ============ */
.client-grid{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:40px;padding:20px 0}
.client-item{transition:var(--transition);display:flex;align-items:center;justify-content:center}
.client-item:hover{transform:scale(1.08);filter:drop-shadow(0 4px 8px rgba(0,0,0,.12))}
.client-item img{max-height:48px;width:auto}

/* ============ NEWS ============ */
.news-item{display:flex;gap:20px;padding:24px 0;border-bottom:1px solid var(--slate-200)}
.news-item:first-child{padding-top:0}
.news-date{flex-shrink:0;width:64px;height:64px;display:flex;flex-direction:column;align-items:center;justify-content:center;background:var(--primary-light);border-radius:var(--radius-sm);color:var(--primary)}
.news-date .day{font-size:22px;font-weight:700;line-height:1}
.news-date .month{font-size:11px;font-weight:600;margin-top:2px}
.news-body h3{font-size:16px;margin:0 0 6px}
.news-body h3 a{color:var(--dark)}.news-body h3 a:hover{color:var(--primary)}
.news-body p{font-size:14px;color:var(--slate-400);margin:0 0 6px;line-height:1.6}
.news-meta{font-size:12px;color:var(--slate-400);display:flex;gap:12px}
@media(max-width:767px){
.news-item{flex-direction:row;gap:14px}
.news-date{width:50px;height:50px}
.news-date .day{font-size:18px}
}

/* ============ CONTACT ============ */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;margin-top:32px}
@media(max-width:767px){.contact-grid{grid-template-columns:1fr}}
.contact-info-item{display:flex;align-items:center;gap:16px;margin-bottom:20px}
.contact-info-icon{width:44px;height:44px;display:flex;align-items:center;justify-content:center;background:var(--primary-light);border-radius:var(--radius-sm);font-size:18px;flex-shrink:0}
.contact-info-text strong{display:block;font-size:14px;color:var(--slate-600);margin-bottom:2px}
.contact-info-text span{font-size:16px;color:var(--dark);font-weight:500}
.contact-form-card{background:var(--white);border:1px solid var(--slate-200);border-radius:var(--radius-lg);padding:36px}
.contact-form-card h3{font-size:20px;margin-bottom:20px;color:var(--dark)}
.form-group{margin-bottom:16px}
.form-group input,.form-group textarea{width:100%;padding:12px 16px;border:1.5px solid var(--slate-200);border-radius:var(--radius-sm);font-size:14px;font-family:inherit;transition:var(--transition);background:var(--white);color:var(--dark)}
.form-group input:focus,.form-group textarea:focus{border-color:var(--primary);outline:none;box-shadow:0 0 0 3px rgba(17,147,212,.12)}
.form-group textarea{height:110px;resize:vertical}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:767px){.form-row{grid-template-columns:1fr}}
.submit-btn{width:100%;padding:14px 32px;background:var(--primary-gradient);color:var(--white);border:none;border-radius:100px;font-size:15px;font-weight:600;cursor:pointer;transition:var(--transition)}
.submit-btn:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(17,147,212,.3)}

/* ============ FOOTER ============ */
.site-footer{background:var(--dark);color:var(--slate-400);padding:80px 0 30px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:48px}
@media(max-width:991px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media(max-width:767px){.footer-grid{grid-template-columns:1fr}}
.footer-col h4{color:var(--white);font-size:14px;font-weight:600;margin-bottom:20px;text-transform:uppercase;letter-spacing:.08em}
.footer-brand p{line-height:1.7;margin:0 0 16px;font-size:13px}
.footer-contact{display:flex;flex-direction:column;gap:8px;font-size:13px}
.footer-contact span{display:flex;align-items:center;gap:8px}
.footer-col a{color:var(--slate-400);display:block;padding:5px 0;font-size:13px;transition:var(--transition)}
.footer-col a:hover{color:var(--white);padding-left:4px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding-top:24px;margin-top:48px;text-align:center;font-size:12px;color:var(--slate-600)}

/* ============ BACK TOP ============ */
#back-top{position:fixed;bottom:30px;right:30px;width:44px;height:44px;background:var(--primary-gradient);color:var(--white);border:none;border-radius:50%;cursor:pointer;opacity:0;visibility:hidden;transition:var(--transition);z-index:999;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-lg)}
#back-top.show{opacity:1;visibility:visible}
#back-top:hover{transform:translateY(-3px);box-shadow:var(--shadow-xl)}

/* ============ RECRUIT ============ */
.job-list{margin-top:32px}
.job-item{background:var(--white);border:1px solid var(--slate-200);border-radius:var(--radius);padding:24px;margin-bottom:16px;transition:var(--transition)}
.job-item:hover{border-color:var(--primary);box-shadow:var(--shadow)}
.job-item h3{font-size:16px;color:var(--dark);margin-bottom:4px}
.job-item p{font-size:14px;color:var(--slate-600);margin:0}

/* ============ ANIMATIONS ============ */
.fade-in{animation:fadeIn .6s ease-out forwards}
@keyframes fadeIn{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}}