/* 佳耀电子企业官网样式 */
:root{
  --blue:#1d4ed8; --blue-dark:#1e3a8a; --blue-deep:#0d1b3e;
  --blue-light:#eff5ff; --line:#e3e9f4; --text:#1f2937; --muted:#6b7280;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei","Segoe UI",sans-serif;color:var(--text);background:#fff;line-height:1.75;font-size:16px}
img,svg{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
.container{width:min(1140px,92%);margin:0 auto}
h1,h2,h3,h4{line-height:1.3;font-weight:700}

/* 顶部导航 */
.site-header{position:sticky;top:0;z-index:99;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:28px;padding:14px 0}
.logo{display:flex;align-items:center}
.logo img{height:46px;width:auto;display:block;transition:.2s}
.logo:hover img{transform:scale(1.03)}
.nav{display:flex;gap:26px;margin-left:auto;font-size:15px}
.nav a{color:#374151;padding:6px 2px;border-bottom:2px solid transparent}
.nav a.active,.nav a:hover{color:var(--blue);border-color:var(--blue)}
.header-phone{color:var(--blue);font-weight:700;font-size:15px;white-space:nowrap}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px}
.nav-toggle span{width:24px;height:2.5px;background:var(--blue-dark);border-radius:2px}

/* 首页 Hero：深色科技感 + 动态效果 */
.hero{position:relative;overflow:hidden;background:linear-gradient(160deg,#070f24 0%,#0d1b3e 48%,#12296b 100%)}
.tech-grid{position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(96,165,250,.13) 1px,transparent 1px),linear-gradient(90deg,rgba(96,165,250,.13) 1px,transparent 1px);
  background-size:46px 46px;animation:gridMove 14s linear infinite;
  -webkit-mask-image:radial-gradient(ellipse 90% 90% at 50% 40%,#000 30%,transparent 78%);
  mask-image:radial-gradient(ellipse 90% 90% at 50% 40%,#000 30%,transparent 78%)}
@keyframes gridMove{from{background-position:0 0}to{background-position:46px 46px}}
.hero-glow{position:absolute;border-radius:50%;pointer-events:none;filter:blur(6px)}
.glow-a{width:620px;height:620px;top:-200px;right:-100px;background:radial-gradient(circle,rgba(37,99,235,.35),transparent 65%);animation:glowPulse 7s ease-in-out infinite}
.glow-b{width:520px;height:520px;bottom:-220px;left:-120px;background:radial-gradient(circle,rgba(34,211,238,.22),transparent 65%);animation:glowPulse 7s ease-in-out 2.5s infinite}
@keyframes glowPulse{0%,100%{opacity:.55;transform:scale(1)}50%{opacity:1;transform:scale(1.12)}}
#particleCanvas{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
.hero-inner{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;padding:78px 0;position:relative;z-index:2}
.hero-tag{display:inline-block;background:rgba(125,211,252,.1);border:1px solid rgba(125,211,252,.4);color:#7dd3fc;font-size:13px;padding:6px 14px;border-radius:999px;margin-bottom:18px}
.hero h1{font-size:44px;color:#fff;letter-spacing:1px}
.hero-sub{color:#b9c8e8;margin:20px 0 30px;font-size:17px;max-width:520px}
.hero-btns{display:flex;gap:14px}
.btn{display:inline-block;padding:13px 30px;border-radius:10px;font-size:16px;font-weight:600;transition:.2s;border:2px solid transparent;cursor:pointer}
.btn-primary{background:linear-gradient(135deg,var(--blue),#3b82f6);color:#fff;box-shadow:0 8px 20px rgba(29,78,216,.25)}
.btn-primary:hover{transform:translateY(-2px)}
.btn-outline{border-color:#8ab4ff;color:#cfe1ff}
.btn-outline:hover{background:rgba(255,255,255,.1)}
.btn-light{background:#fff;color:var(--blue-dark)}
.btn-block{width:100%;border:0}
.hero-visual svg{width:100%}

/* 通用区块 */
.section{padding:72px 0}
.section-gray{background:#f7f9fc}
.section-head{text-align:center;margin-bottom:44px}
.section-head h2{font-size:32px;color:var(--blue-deep)}
.section-head p{color:var(--muted);margin-top:8px}

/* 卡片 */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-bottom:22px}
.grid-3-stats{gap:28px;margin-bottom:28px}
.grid-3-stats .feature-card{padding:32px 22px}
.grid-3-stats h3{font-size:30px}
.feature-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:26px 22px;text-align:center;transition:.2s}
.feature-card:hover{box-shadow:0 10px 28px rgba(13,27,62,.08);transform:translateY(-3px)}
.feature-card h3{color:var(--blue);font-size:26px}
.feature-card h4{color:var(--blue-dark);font-size:18px;margin-bottom:6px}
.feature-card p{color:var(--muted);font-size:14px}
.feature-tall{text-align:left}

.biz-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:34px 28px;transition:.25s}
.biz-card:hover{box-shadow:0 14px 34px rgba(29,78,216,.12);transform:translateY(-4px);border-color:#bcd0f5}
.biz-icon{width:64px;height:64px;border-radius:14px;background:var(--blue-light);display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.biz-icon svg{width:40px;height:40px}
.biz-card h3{font-size:21px;color:var(--blue-deep);margin-bottom:10px}
.biz-card p{color:var(--muted);font-size:15px;margin-bottom:16px}
.biz-more{color:var(--blue);font-weight:600;font-size:14px}

/* 业务标签 */
.biz-scope{margin-top:36px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:30px 34px}
.biz-scope h3{color:var(--blue-deep);margin-bottom:16px}
.tags{display:flex;flex-wrap:wrap;gap:10px}
.tags span{background:var(--blue-light);color:var(--blue-dark);border:1px solid #d4e2fa;font-size:14px;padding:7px 16px;border-radius:999px}
.tags-center{justify-content:center}
.tags-lg span{font-size:16px;padding:10px 22px}
.scope-note{margin-top:16px;color:var(--muted);font-size:14px}

/* 流程 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.step{background:#fff;border:1px solid var(--line);border-radius:14px;padding:26px 22px;position:relative}
.step span{font-size:30px;font-weight:800;color:#c7d7f5}
.step h4{color:var(--blue-deep);margin:6px 0}
.step p{color:var(--muted);font-size:14px}

/* CTA 横带 */
.cta-band{background:linear-gradient(135deg,var(--blue-dark),var(--blue));color:#fff;text-align:center;padding:64px 0}
.cta-inner h2{font-size:30px;margin-bottom:10px}
.cta-inner p{opacity:.85;margin-bottom:26px}

/* 内页 banner */
.page-banner{position:relative;overflow:hidden;background:linear-gradient(135deg,#070f24,var(--blue-deep) 40%,var(--blue-dark) 70%,var(--blue));color:#fff;text-align:center;padding:76px 0}
.page-banner .container{position:relative;z-index:2}
.page-banner h1{font-size:38px;margin-bottom:10px}
.page-banner p{opacity:.85}

/* 关于页 */
.about-layout{display:grid;grid-template-columns:1.6fr 1fr;gap:34px;align-items:start}
.about-text h2{color:var(--blue-deep);font-size:28px;margin-bottom:18px}
.about-text p{margin-bottom:16px;color:#374151}
.about-text b{color:var(--blue-dark)}
.about-aside .aside-card{background:#f7f9fc;border:1px solid var(--line);border-radius:14px;padding:24px 26px;margin-bottom:20px}
.about-aside h4{color:var(--blue-dark);margin-bottom:10px}
.about-aside p{font-size:14px;color:#4b5563;margin-bottom:12px}

/* 联系页 */
.contact-grid{align-items:start}
.contact-info h2,.contact-form-card h2{color:var(--blue-deep);font-size:26px;margin-bottom:22px}
.contact-item{display:flex;gap:16px;align-items:flex-start;margin-bottom:22px}
.ci-icon{width:46px;height:46px;border-radius:12px;background:var(--blue-light);color:var(--blue);display:flex;align-items:center;justify-content:center;font-size:20px;flex:none}
.contact-item b{color:var(--blue-dark)}
.contact-item p{color:var(--muted);font-size:15px}
.contact-item a{color:var(--blue)}
.contact-form-card{background:#f7f9fc;border:1px solid var(--line);border-radius:16px;padding:32px}
.form-tip{color:var(--muted);font-size:14px;margin-bottom:20px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.contact-form-card input,.contact-form-card textarea{width:100%;padding:13px 15px;border:1px solid #d3dbe8;border-radius:10px;font-size:15px;margin-bottom:14px;font-family:inherit;background:#fff}
.contact-form-card input:focus,.contact-form-card textarea:focus{outline:none;border-color:var(--blue)}

/* 页脚 */
.site-footer{background:var(--blue-deep);color:#c9d4ec}
.footer-inner{display:grid;grid-template-columns:repeat(3,1fr);gap:34px;padding:56px 0 40px}
.footer-col h4{color:#fff;margin-bottom:14px;font-size:17px}
.footer-col p{margin-bottom:9px;font-size:14px}
.footer-col a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);text-align:center;padding:18px 0;font-size:13px;color:#8fa0c5}
.footer-bottom p{margin:4px 0}
.footer-bottom a:hover{color:#cfe1ff;text-decoration:underline}

/* 响应式 */
@media(max-width:920px){
  .hero-inner{grid-template-columns:1fr;padding:48px 0}
  .hero h1{font-size:34px}
  .hero-visual{display:none}
  .grid-2,.grid-3,.grid-4,.steps{grid-template-columns:1fr 1fr}
  .about-layout,.contact-grid{grid-template-columns:1fr}
  .nav{position:absolute;top:64px;left:0;right:0;background:#fff;flex-direction:column;gap:0;padding:10px 4%;border-bottom:1px solid var(--line);display:none;box-shadow:0 12px 24px rgba(13,27,62,.08)}
  .nav.open{display:flex}
  .nav a{padding:12px 4px;border-bottom:none}
  .header-phone{display:none}
  .nav-toggle{display:flex;margin-left:auto}
  .footer-inner{grid-template-columns:1fr 1fr}
}
@media(max-width:560px){
  .grid-2,.grid-3,.grid-4,.steps,.form-row{grid-template-columns:1fr}
  .section{padding:52px 0}
  .section-head h2{font-size:26px}
  .page-banner h1{font-size:30px}
  .footer-inner{grid-template-columns:1fr}
}