/* ===== 保定市迪肯信息科技有限公司 - Dark Theme (Sky/Amber) ===== */
:root {
  --bg-primary: #0b111a;
  --bg-secondary: #111827;
  --bg-card: #1a2332;
  --bg-card-hover: #223044;
  --sky: #38bdf8;
  --sky-light: #7dd3fc;
  --sky-dark: #0284c7;
  --amber: #f59e0b;
  --amber-light: #fbbf24;
  --text-primary: #f0f4f8;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border-color: #1e293b;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
  --gradient-primary: linear-gradient(135deg, #38bdf8, #f59e0b, #38bdf8);
  --gradient-bg: linear-gradient(180deg, #0b111a 0%, #111827 100%);
  --font-en: 'Segoe UI', Helvetica, Arial, sans-serif;
  --font-zh: 'Microsoft YaHei', 'PingFang SC', 'Noto Sans SC', sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font-en);background:var(--bg-primary);color:var(--text-primary);line-height:1.8;overflow-x:hidden}
a{color:var(--sky);text-decoration:none;transition:color .3s}
a:hover{color:var(--sky-light)}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.lang-toggle{display:inline-flex;align-items:center;gap:6px;background:transparent;border:1px solid var(--sky);color:var(--sky);padding:6px 16px;border-radius:20px;cursor:pointer;font-size:14px;font-weight:500;transition:all .3s;font-family:inherit}
.lang-toggle:hover{background:var(--sky);color:var(--bg-primary)}
[data-lang="zh"] .lang-en{display:none}
[data-lang="en"] .lang-zh{display:none}
header{position:fixed;top:0;width:100%;z-index:1000;background:rgba(11,17,26,.95);backdrop-filter:blur(12px);border-bottom:1px solid var(--border-color);transition:all .3s}
header.scrolled{box-shadow:0 4px 20px rgba(0,0,0,.5)}
nav{display:flex;justify-content:space-between;align-items:center;padding:16px 0}
.logo{font-size:20px;font-weight:700;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.nav-links{display:flex;align-items:center;gap:28px;list-style:none}
.nav-links a{color:var(--text-secondary);font-size:15px;font-weight:400;position:relative;padding:4px 0}
.nav-links a::after{content:'';position:absolute;bottom:0;left:0;width:0;height:2px;background:var(--gradient-primary);transition:width .3s}
.nav-links a:hover::after,.nav-links a.active::after{width:100%}
.nav-links a:hover,.nav-links a.active{color:var(--sky)}
.mobile-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;background:none;border:none;padding:4px}
.mobile-toggle span{width:26px;height:2px;background:var(--text-primary);transition:all .3s;border-radius:2px}
.hero{min-height:100vh;display:flex;align-items:center;justify-content:center;text-align:center;background:var(--gradient-bg);position:relative;overflow:hidden;padding:120px 20px 80px}
.hero::before{content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(ellipse at 30% 50%,rgba(56,189,248,.06) 0%,transparent 50%),radial-gradient(ellipse at 70% 50%,rgba(245,158,11,.04) 0%,transparent 50%);animation:heroGlow 15s ease-in-out infinite alternate}
@keyframes heroGlow{0%{transform:translate(0,0)}100%{transform:translate(-5%,-5%)}}
.hero-content{position:relative;z-index:1;max-width:800px}
.hero-badge{display:inline-block;padding:8px 20px;border:1px solid var(--sky-dark);border-radius:30px;font-size:13px;color:var(--sky);margin-bottom:24px;letter-spacing:2px;text-transform:uppercase}
.hero h1{font-size:clamp(36px,6vw,64px);font-weight:800;line-height:1.15;margin-bottom:24px}
.hero h1 .highlight{background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero p{font-size:18px;color:var(--text-secondary);max-width:640px;margin:0 auto 36px;line-height:1.8}
.hero-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 32px;border-radius:8px;font-size:16px;font-weight:600;transition:all .3s;cursor:pointer;border:none;font-family:inherit}
.btn-primary{background:var(--gradient-primary);color:#fff}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(56,189,248,.3)}
.btn-outline{background:transparent;border:2px solid var(--sky);color:var(--sky)}
.btn-outline:hover{background:var(--sky);color:#fff;transform:translateY(-2px)}
.section{padding:100px 0}
.section-header{text-align:center;margin-bottom:64px}
.section-tag{display:inline-block;font-size:13px;color:var(--sky);letter-spacing:3px;text-transform:uppercase;margin-bottom:12px}
.section-header h2{font-size:clamp(28px,4vw,42px);font-weight:700;margin-bottom:16px}
.section-header p{color:var(--text-secondary);font-size:16px;max-width:600px;margin:0 auto}
.services-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px}
.service-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:16px;padding:36px 28px;transition:all .4s;position:relative;overflow:hidden}
.service-card::before{content:'';position:absolute;top:0;left:0;width:100%;height:3px;background:var(--gradient-primary);transform:scaleX(0);transform-origin:left;transition:transform .4s}
.service-card:hover::before{transform:scaleX(1)}
.service-card:hover{background:var(--bg-card-hover);transform:translateY(-6px);box-shadow:var(--shadow);border-color:var(--sky-dark)}
.service-icon{width:56px;height:56px;border-radius:14px;background:rgba(56,189,248,.12);display:flex;align-items:center;justify-content:center;margin-bottom:20px;font-size:24px}
.service-card h3{font-size:20px;font-weight:600;margin-bottom:12px}
.service-card p{color:var(--text-secondary);font-size:15px;line-height:1.7}
.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:30px}
.feature-item{text-align:center;padding:32px 20px;border-radius:12px;transition:all .3s}
.feature-item:hover{background:var(--bg-card)}
.feature-num{font-size:42px;font-weight:800;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:8px}
.feature-item h4{font-size:18px;margin-bottom:8px}
.feature-item p{color:var(--text-secondary);font-size:14px}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.about-text h2{font-size:clamp(28px,3vw,38px);margin-bottom:20px}
.about-text p{color:var(--text-secondary);margin-bottom:16px}
.about-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.stat-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:12px;padding:24px;text-align:center}
.stat-number{font-size:32px;font-weight:700;color:var(--sky)}
.stat-label{color:var(--text-secondary);font-size:14px;margin-top:4px}
.values-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:24px;margin-top:48px}
.value-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:12px;padding:28px;text-align:center;transition:all .3s}
.value-card:hover{background:var(--bg-card-hover);border-color:var(--sky-dark)}
.value-card .icon{font-size:36px;margin-bottom:16px}
.value-card h4{font-size:18px;margin-bottom:8px}
.value-card p{color:var(--text-secondary);font-size:14px}
.process-steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:30px}
.process-step{text-align:center}
.step-number{width:48px;height:48px;border-radius:50%;background:var(--gradient-primary);color:#fff;font-weight:700;font-size:18px;display:flex;align-items:center;justify-content:center;margin:0 auto 16px}
.process-step h4{font-size:18px;margin-bottom:8px}
.process-step p{color:var(--text-secondary);font-size:14px}
.cta-section{background:var(--bg-card);text-align:center;padding:80px 0;border-top:1px solid var(--border-color);border-bottom:1px solid var(--border-color)}
.cta-section h2{font-size:clamp(28px,3.5vw,40px);margin-bottom:16px}
.cta-section p{color:var(--text-secondary);max-width:600px;margin:0 auto 32px}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px}
.contact-info-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:16px;padding:40px}
.contact-info-card h3{font-size:22px;margin-bottom:24px}
.contact-item{display:flex;gap:16px;margin-bottom:24px}
.contact-icon{width:44px;height:44px;min-width:44px;border-radius:10px;background:rgba(56,189,248,.12);display:flex;align-items:center;justify-content:center;font-size:18px}
.contact-item h4{font-size:14px;color:var(--text-muted);margin-bottom:2px}
.contact-item p{font-size:15px}
.contact-form{width:100%}
.form-group{margin-bottom:20px}
.form-group label{display:block;font-size:14px;color:var(--text-secondary);margin-bottom:6px}
.form-group input,.form-group textarea,.form-group select{width:100%;padding:12px 16px;background:var(--bg-card);border:1px solid var(--border-color);border-radius:8px;color:var(--text-primary);font-size:15px;font-family:inherit;transition:border-color .3s}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{outline:none;border-color:var(--sky)}
.form-group textarea{min-height:140px;resize:vertical}
.service-detail-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px}
.service-detail-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:16px;padding:32px;transition:all .3s}
.service-detail-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--sky-dark)}
.service-detail-card .icon{font-size:28px;margin-bottom:16px}
.service-detail-card h3{font-size:18px;margin-bottom:12px}
.service-detail-card p{color:var(--text-secondary);font-size:14px;line-height:1.7}
.team-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:24px}
.team-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:12px;padding:28px 20px;text-align:center;transition:all .3s}
.team-card:hover{background:var(--bg-card-hover);border-color:var(--sky-dark)}
.team-avatar{width:64px;height:64px;border-radius:50%;background:var(--gradient-primary);display:flex;align-items:center;justify-content:center;margin:0 auto 16px;font-size:24px;color:#fff;font-weight:700}
.team-card h4{font-size:16px;margin-bottom:4px}
.team-card p{color:var(--text-secondary);font-size:13px}
.legal-content{max-width:800px;margin:0 auto}
.legal-content h1{font-size:32px;margin-bottom:8px}
.legal-content .last-updated{color:var(--text-muted);font-size:14px;margin-bottom:40px}
.legal-content h2{font-size:22px;margin:36px 0 16px;color:var(--sky)}
.legal-content h3{font-size:18px;margin:24px 0 12px}
.legal-content p{color:var(--text-secondary);margin-bottom:12px;line-height:1.8}
.legal-content ul,.legal-content ol{color:var(--text-secondary);margin:12px 0 20px;padding-left:24px;line-height:1.8}
.legal-content li{margin-bottom:8px}
footer{background:var(--bg-secondary);border-top:1px solid var(--border-color);padding:60px 0 30px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-col h4{font-size:16px;margin-bottom:20px;color:var(--sky)}
.footer-col p,.footer-col a{color:var(--text-secondary);font-size:14px;line-height:2;display:block}
.footer-col a:hover{color:var(--sky)}
.footer-bottom{border-top:1px solid var(--border-color);padding-top:24px;text-align:center;color:var(--text-muted);font-size:13px}
.page-header{padding:140px 0 60px;text-align:center;background:var(--gradient-bg);position:relative}
.page-header h1{font-size:clamp(30px,4vw,44px);font-weight:700;margin-bottom:12px}
.page-header p{color:var(--text-secondary);font-size:16px;max-width:600px;margin:0 auto}
.fade-in{opacity:0;transform:translateY(30px);transition:opacity .6s ease,transform .6s ease}
.fade-in.visible{opacity:1;transform:translateY(0)}
@media(max-width:968px){.about-grid,.contact-grid{grid-template-columns:1fr;gap:32px}.footer-grid{grid-template-columns:1fr 1fr;gap:30px}.hero h1{font-size:36px}}
@media(max-width:768px){.nav-links{display:none;position:absolute;top:100%;left:0;width:100%;background:rgba(11,17,26,.98);flex-direction:column;padding:20px;gap:16px;border-bottom:1px solid var(--border-color)}.nav-links.open{display:flex}.mobile-toggle{display:flex}.section{padding:60px 0}.footer-grid{grid-template-columns:1fr}.features-grid{grid-template-columns:repeat(2,1fr)}.about-stats{grid-template-columns:repeat(2,1fr)}}
@media(max-width:480px){.features-grid,.about-stats{grid-template-columns:1fr}.hero-actions{flex-direction:column;align-items:center}.btn{width:100%;justify-content:center}}