/* ============================================
   航越科技 - 主样式文件
   Beijing Hang Yue Technology & Development Co., Ltd
   ============================================ */

/* Reset & Base */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,'Microsoft YaHei','PingFang SC','Helvetica Neue',Arial,sans-serif;color:#1a1a2e;background:#fff;line-height:1.6;font-size:15px}
a{text-decoration:none;color:inherit}
ul{list-style:none}
img{max-width:100%;height:auto}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* ===== Navigation ===== */
.nav{background:#fff;position:sticky;top:0;z-index:1000;border-bottom:1px solid #eef0f4;height:72px}
.nav-inner{max-width:1200px;margin:0 auto;padding:0 20px;height:100%;display:flex;align-items:center;justify-content:space-between}
.nav-logo{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:#0b2b5c}
.nav-logo .logo-icon{width:34px;height:34px;background:#0b2b5c;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-size:11px;font-weight:900}
.nav-logo .logo-sub{font-size:11px;font-weight:400;color:#4a5568;display:block;margin-top:-2px}
.nav-links{display:flex;gap:24px;align-items:center}
.nav-links a{color:#4a5568;font-size:14px;padding:6px 0;border-bottom:2px solid transparent;transition:all .2s}
.nav-links a:hover,.nav-links a.active{color:#0b2b5c;font-weight:600;border-bottom-color:#0b2b5c}
.nav-lang{color:#0b2b5c;font-size:13px;cursor:pointer;padding:5px 14px;border:1px solid #d0d8e8;border-radius:20px;transition:.2s}
.nav-lang:hover{background:#0b2b5c;color:#fff;border-color:#0b2b5c}
.nav-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:5px}
.nav-toggle span{width:24px;height:2px;background:#0b2b5c;border-radius:2px;transition:.3s}

/* ===== Hero Section ===== */
.hero{background:linear-gradient(135deg,#f8faff 0%,#eef4fb 100%);padding:80px 20px;min-height:70vh;display:flex;align-items:center}
.hero .container{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.hero-content h1{font-size:42px;color:#0b2b5c;line-height:1.3;margin-bottom:16px;font-weight:800}
.hero-content h1 span{color:#1a56db}
.hero-content p{color:#4a5568;font-size:16px;line-height:1.8;margin-bottom:30px;max-width:540px}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap}
.btn-primary{display:inline-block;background:#0b2b5c;color:#fff;padding:14px 32px;border-radius:30px;font-size:15px;font-weight:600;transition:.3s;border:none;cursor:pointer}
.btn-primary:hover{background:#1a3f75;transform:translateY(-2px);box-shadow:0 8px 24px rgba(11,43,92,.25)}
.btn-outline{display:inline-block;border:1px solid #d0d8e8;color:#0b2b5c;padding:14px 32px;border-radius:30px;font-size:15px;font-weight:500;transition:.3s;background:transparent;cursor:pointer}
.btn-outline:hover{border-color:#0b2b5c;background:#f0f4ff}
.hero-visual{background:linear-gradient(145deg,#e6edf8,#d4e0f0);border-radius:16px;height:400px;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}
.hero-visual .orbit{position:absolute;width:280px;height:280px;border:2px dashed rgba(11,43,92,.15);border-radius:50%;animation:spin 25s linear infinite}
.hero-visual .orbit2{width:200px;height:200px;border-color:rgba(11,43,92,.1);animation-duration:18s;animation-direction:reverse}
@keyframes spin{to{transform:rotate(360deg)}}
.hero-visual .center-icon{font-size:72px;z-index:2;opacity:.9}
.hero-visual .plane{z-index:2;position:absolute;font-size:28px;animation:flyAround 12s ease-in-out infinite}
@keyframes flyAround{0%,100%{transform:translate(-80px,-60px) rotate(-20deg)}50%{transform:translate(80px,60px) rotate(20deg)}}

/* ===== Section Common ===== */
.section{padding:80px 20px}
.section-title{text-align:center;margin-bottom:50px}
.section-title h2{font-size:30px;color:#0b2b5c;margin-bottom:10px;font-weight:700}
.section-title p{color:#718096;font-size:15px}
.section-title::after{content:'';display:block;width:50px;height:3px;background:#0b2b5c;margin:14px auto 0;border-radius:2px}
.section-alt{background:#f8faff}

/* ===== Stats ===== */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;max-width:800px;margin:0 auto}
.stat-card{background:#fff;border:1px solid #eef0f4;border-radius:10px;padding:28px 20px;text-align:center;transition:.25s}
.stat-card:hover{box-shadow:0 4px 20px rgba(11,43,92,.08);border-color:#d0d8e8}
.stat-num{font-size:32px;font-weight:800;color:#0b2b5c;margin-bottom:4px}
.stat-label{color:#718096;font-size:13px}

/* ===== About Grid ===== */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}
.about-text p{color:#4a5568;line-height:1.9;margin-bottom:14px}
.feature-list{margin-top:20px}
.feature-list li{padding:8px 0;padding-left:24px;position:relative;color:#4a5568}
.feature-list li::before{content:"\2713";position:absolute;left:0;color:#0b2b5c;font-weight:700}

/* ===== Solutions Grid ===== */
.sol-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.sol-card{background:#fff;border:1px solid #eef0f4;border-radius:10px;padding:28px;transition:.25s}
.sol-card:hover{box-shadow:0 8px 30px rgba(11,43,92,.1);transform:translateY(-3px);border-color:#d0d8e8}
.sol-tag{font-size:12px;font-weight:600;color:#0b2b5c;background:#e6edf8;display:inline-block;padding:4px 12px;border-radius:20px;margin-bottom:14px}
.sol-card h3{font-size:17px;color:#0b2b5c;margin-bottom:8px}
.sol-card p{color:#718096;font-size:14px;line-height:1.7}

/* ===== Projects ===== */
.proj-table{width:100%;border-collapse:collapse;background:#fff;border-radius:10px;overflow:hidden;box-shadow:0 1px 3px rgba(0,0,0,.06)}
.proj-table th{background:#0b2b5c;color:#fff;padding:14px 16px;text-align:left;font-size:14px;font-weight:600}
.proj-table td{padding:12px 16px;border-bottom:1px solid #eef0f4;font-size:14px;color:#4a5568}
.proj-table tr:hover td{background:#f8faff}
.proj-table .status-badge{display:inline-block;padding:2px 10px;border-radius:12px;font-size:12px;font-weight:500}
.status-badge.done{background:#d4edda;color:#155724}
.status-badge.active{background:#fff3cd;color:#856404}

/* ===== Certificates ===== */
.cert-scroll{display:flex;gap:20px;overflow-x:auto;padding:12px 0;scroll-snap-type:x mandatory}
.cert-scroll::-webkit-scrollbar{height:4px}
.cert-scroll::-webkit-scrollbar-thumb{background:rgba(11,43,92,.2);border-radius:4px}
.cert-item{flex-shrink:0;width:200px;height:150px;background:#fff;border:1px solid #eef0f4;border-radius:8px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:16px;scroll-snap-align:start;transition:.2s}
.cert-item:hover{border-color:#0b2b5c;box-shadow:0 4px 16px rgba(11,43,92,.1)}
.cert-item .icon{font-size:32px;margin-bottom:8px;opacity:.7}
.cert-item .name{font-size:13px;color:#4a5568;font-weight:500}
.cert-item .date{font-size:11px;color:#a0aec0;margin-top:4px}

/* ===== Timeline ===== */
.timeline{max-width:800px;margin:0 auto;position:relative;padding:20px 0}
.timeline::before{content:'';position:absolute;left:50%;top:0;bottom:0;width:2px;background:#e2e8f0;transform:translateX(-50%)}
.tl-item{display:flex;margin-bottom:40px;position:relative}
.tl-item:nth-child(odd){flex-direction:row}
.tl-item:nth-child(even){flex-direction:row-reverse}
.tl-year{flex-shrink:0;width:80px;text-align:center;background:#0b2b5c;color:#fff;padding:6px 0;border-radius:20px;font-size:13px;font-weight:600;z-index:2;margin:0 auto;position:absolute;left:50%;transform:translateX(-50%)}
.tl-content{width:calc(50% - 60px);padding:32px 0 0}
.tl-item:nth-child(odd) .tl-content{margin-right:auto;text-align:right}
.tl-item:nth-child(even) .tl-content{margin-left:auto;text-align:left}
.tl-content h3{color:#0b2b5c;font-size:18px;margin-bottom:6px}
.tl-content p{color:#4a5568;font-size:14px;line-height:1.6}

/* ===== Contact ===== */
.contact{background:#0b2b5c;color:#fff}
.contact .section-title h2{color:#fff}
.contact .section-title p{color:#8aaed0}
.contact .section-title::after{background:#4a7db5}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:50px}
.contact-info p{color:#8aaed0;margin-bottom:14px;font-size:15px}
.contact-info strong{color:#fff;display:inline-block;width:80px}
.form-group{margin-bottom:14px}
.form-group input,.form-group textarea,.form-group select{width:100%;padding:12px 16px;border:1px solid #1e4070;border-radius:8px;background:#12315e;color:#fff;font-size:14px;transition:.2s}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{border-color:#4a7db5;outline:none;box-shadow:0 0 0 3px rgba(74,125,181,.2)}
.form-group input::placeholder,.form-group textarea::placeholder{color:#5a7daa}
.form-group select{color:#fff;cursor:pointer}
.form-group select option{color:#333;background:#fff}

/* ===== Recruitment ===== */
.job-card{background:#fff;border:1px solid #eef0f4;border-radius:10px;padding:24px;margin-bottom:16px;transition:.2s}
.job-card:hover{box-shadow:0 4px 16px rgba(11,43,92,.08)}
.job-card h3{color:#0b2b5c;font-size:17px;margin-bottom:6px}
.job-card .meta{display:flex;gap:20px;margin-bottom:12px;font-size:13px;color:#718096}
.job-card .desc{color:#4a5568;font-size:14px;line-height:1.7;margin-bottom:12px}
.job-card .tags{display:flex;gap:8px;flex-wrap:wrap}
.job-card .tags span{background:#f0f4ff;color:#0b2b5c;font-size:12px;padding:3px 10px;border-radius:4px}
.resume-form{background:#f8faff;border:1px solid #eef0f4;border-radius:10px;padding:32px}
.resume-form h3{color:#0b2b5c;margin-bottom:20px;font-size:18px}
.file-upload{position:relative}
.file-upload input[type=file]{position:absolute;opacity:0;width:100%;height:100%;cursor:pointer;top:0;left:0}
.file-label{display:block;padding:20px;text-align:center;border:2px dashed #d0d8e8;border-radius:8px;color:#718096;font-size:14px;cursor:pointer;transition:.2s}
.file-label:hover{border-color:#0b2b5c;color:#0b2b5c;background:#f0f4ff}

/* ===== Map ===== */
.map-container{width:100%;height:350px;background:#eef0f4;border-radius:10px;overflow:hidden;border:1px solid #eef0f4}

/* ===== Footer ===== */
.footer{background:#081c3a;padding:32px 20px 24px}
.footer-inner{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px}
.footer h4{color:#e6edf3;font-size:15px;margin-bottom:14px}
.footer p,.footer a{color:#4a6a8a;font-size:13px;line-height:1.8}
.footer a:hover{color:#8aaed0}
.footer-bottom{text-align:center;padding-top:24px;margin-top:24px;border-top:1px solid #1a3050;color:#4a6a8a;font-size:12px}

/* ===== Back to Top ===== */
.back-top{position:fixed;bottom:30px;right:30px;width:44px;height:44px;background:#0b2b5c;color:#fff;border-radius:50%;display:none;align-items:center;justify-content:center;font-size:20px;cursor:pointer;z-index:999;transition:.3s;box-shadow:0 4px 12px rgba(0,0,0,.2)}
.back-top:hover{background:#1a3f75;transform:translateY(-3px)}

/* ===== Page Header ===== */
.page-header{background:#0b2b5c;padding:60px 20px;text-align:center}
.page-header h1{color:#fff;font-size:36px;margin-bottom:8px}
.page-header p{color:#8aaed0;font-size:15px}

/* ===== Toast / Notifications ===== */
.toast{position:fixed;top:20px;right:20px;background:#0b2b5c;color:#fff;padding:14px 24px;border-radius:8px;font-size:14px;z-index:9999;opacity:0;transform:translateY(-20px);transition:.3s;pointer-events:none}
.toast.show{opacity:1;transform:translateY(0)}

/* ===== Responsive ===== */
@media(max-width:992px){
  .hero .container{grid-template-columns:1fr}
  .hero-content h1{font-size:32px}
  .hero-visual{height:300px}
  .about-grid{grid-template-columns:1fr}
  .sol-grid{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:1fr}
  .tl-content{width:calc(100% - 50px)}
  .tl-item:nth-child(odd) .tl-content,.tl-item:nth-child(even) .tl-content{text-align:left;margin-left:50px;margin-right:0;width:calc(100% - 50px)}
  .timeline::before{left:25px}
  .tl-year{left:25px;transform:translateX(-50%)}
  .tl-item:nth-child(odd){flex-direction:row}
  .tl-item:nth-child(even){flex-direction:row}
  .footer-inner{grid-template-columns:1fr 1fr}
  .nav-links{display:none;position:absolute;top:72px;left:0;right:0;background:#fff;flex-direction:column;padding:20px;border-bottom:1px solid #eef0f4;box-shadow:0 4px 12px rgba(0,0,0,.08)}
  .nav-links.show{display:flex}
  .nav-links a{padding:12px 0;border-bottom:1px solid #f0f2f6}
  .nav-toggle{display:flex}
}
@media(max-width:640px){
  .hero{padding:60px 16px;min-height:auto}
  .hero-content h1{font-size:28px}
  .hero-visual{height:220px}
  .stats{grid-template-columns:1fr}
  .sol-grid{grid-template-columns:1fr}
  .section{padding:50px 16px}
  .section-title h2{font-size:24px}
  .footer-inner{grid-template-columns:1fr}
  .proj-table{font-size:13px}
  .proj-table th,.proj-table td{padding:8px 10px}
  .contact-grid{gap:30px}
}