/* ===== 艾尼包装 GEO优化型官网 公共样式 ===== */
:root{
  --primary:#c8102e;          /* 品牌红 */
  --primary-dark:#a00d24;
  --primary-light:#fde8ec;
  --accent:#d4a24c;           /* 金色点缀 */
  --ink:#1a1d23;              /* 主文字 */
  --ink-2:#4b515d;
  --ink-3:#7a8190;
  --line:#e6e9ef;
  --bg:#ffffff;
  --bg-soft:#f6f7f9;
  --bg-soft-2:#eef1f5;
  --radius:14px;
  --radius-sm:8px;
  --shadow-sm:0 2px 8px rgba(26,29,35,.06);
  --shadow:0 12px 36px rgba(26,29,35,.08);
  --shadow-lg:0 24px 60px rgba(26,29,35,.12);
  --trans:.3s cubic-bezier(.4,0,.2,1);
  --maxw:1240px;
  --font:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.75;font-size:15px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color var(--trans)}
a:hover{color:var(--primary)}
ul{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-tight{padding:72px 0}

/* ===== 顶部导航 ===== */
.topbar{background:#111418;color:#b9bdc6;font-size:13px;height:38px;display:flex;align-items:center}
.topbar .container{display:flex;justify-content:space-between;align-items:center;width:100%}
.topbar a{color:#b9bdc6;margin-left:22px}
.topbar a:hover{color:#fff}
.topbar .left span{margin-right:22px}

.nav{background:#fff;position:sticky;top:0;z-index:100;box-shadow:var(--shadow-sm);transition:box-shadow var(--trans)}
.nav.scrolled{box-shadow:var(--shadow)}
.nav .container{display:flex;align-items:center;justify-content:space-between;height:76px}
.logo{display:flex;align-items:center;gap:12px;font-weight:800;font-size:22px;color:var(--ink);letter-spacing:.5px}
.logo img{height:46px;width:auto;display:block}
.logo small{display:block;font-size:11px;color:var(--ink-3);font-weight:500;letter-spacing:2px;margin-top:2px}
.nav-links{display:flex;gap:4px}
.nav-links a{padding:10px 18px;border-radius:8px;font-size:15px;font-weight:500;color:var(--ink-2);position:relative}
.nav-links a:hover,.nav-links a.active{color:var(--primary);background:var(--primary-light)}
.nav-cta{display:flex;align-items:center;gap:18px}
.nav-phone{display:flex;flex-direction:column;align-items:flex-end;line-height:1.2}
.nav-phone b{color:var(--primary);font-size:18px;font-weight:800}
.nav-phone span{font-size:12px;color:var(--ink-3)}
.btn{display:inline-flex;align-items:center;gap:8px;padding:11px 24px;border-radius:8px;font-size:14px;font-weight:600;transition:all var(--trans);white-space:nowrap}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px);box-shadow:0 8px 20px rgba(200,16,46,.3)}
.btn-ghost{border:1.5px solid var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-light)}
.btn-light{background:#fff;color:var(--primary)}
.btn-light:hover{background:var(--primary-light)}

/* ===== Hero ===== */
.hero{position:relative;min-height:620px;display:flex;align-items:center;background:linear-gradient(120deg,#0e1116 0%,#1a1d23 60%,#2a1f26 100%);overflow:hidden;color:#fff}
.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 80% 30%,rgba(200,16,46,.35),transparent 50%),radial-gradient(circle at 20% 80%,rgba(212,162,76,.18),transparent 45%)}
.hero::after{content:"";position:absolute;right:-100px;top:-100px;width:600px;height:600px;border:1px solid rgba(255,255,255,.06);border-radius:50%}
.hero .container{position:relative;z-index:2;display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center}
.hero-tag{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;border:1px solid rgba(255,255,255,.2);border-radius:999px;font-size:13px;color:#f1c8cf;margin-bottom:24px;background:rgba(200,16,46,.15)}
.hero h1{font-size:52px;line-height:1.15;font-weight:800;margin-bottom:20px;letter-spacing:-1px}
.hero h1 .hl{color:#ffb3bd}
.hero p.lead{font-size:17px;color:#c9ccd4;margin-bottom:32px;max-width:560px}
.hero-stats{display:flex;gap:40px;margin-top:40px;padding-top:32px;border-top:1px solid rgba(255,255,255,.12)}
.hero-stats div b{display:block;font-size:34px;font-weight:800;color:#fff}
.hero-stats div span{font-size:13px;color:#9aa0ab}
.hero-visual{position:relative;height:480px}
.hero-card{position:absolute;background:rgba(255,255,255,.06);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.12);border-radius:18px;padding:24px}
.hero-card.c1{top:30px;right:40px;width:260px}
.hero-card.c2{top:180px;left:0;width:240px}
.hero-card.c3{bottom:20px;right:0;width:220px}
.hero-card .num{font-size:30px;font-weight:800;color:#ffb3bd}
.hero-card .label{font-size:13px;color:#c9ccd4;margin-top:4px}
.hero-card .bar{height:6px;background:rgba(255,255,255,.1);border-radius:3px;margin-top:12px;overflow:hidden}
.hero-card .bar i{display:block;height:100%;background:linear-gradient(90deg,var(--primary),var(--accent));border-radius:3px}

/* ===== 通用区块标题 ===== */
.eyebrow{display:inline-block;font-size:13px;font-weight:700;color:var(--primary);letter-spacing:3px;text-transform:uppercase;margin-bottom:12px}
.section-title{font-size:38px;font-weight:800;line-height:1.25;margin-bottom:16px;letter-spacing:-.5px}
.section-desc{font-size:16px;color:var(--ink-3);max-width:640px}
.title-center{text-align:center;margin-bottom:56px}
.title-center .section-desc{margin:0 auto}

/* ===== 核心优势 ===== */
.advantages{background:var(--bg-soft)}
.adv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.adv-card{background:#fff;border-radius:var(--radius);padding:36px 30px;box-shadow:var(--shadow-sm);border:1px solid var(--line);transition:all var(--trans);position:relative;overflow:hidden}
.adv-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:transparent}
.adv-card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--primary),var(--accent));transform:scaleX(0);transform-origin:left;transition:transform var(--trans)}
.adv-card:hover::before{transform:scaleX(1)}
.adv-icon{width:58px;height:58px;border-radius:14px;background:var(--primary-light);display:flex;align-items:center;justify-content:center;font-size:28px;margin-bottom:22px}
.adv-card h3{font-size:20px;font-weight:700;margin-bottom:12px}
.adv-card p{font-size:14px;color:var(--ink-3);line-height:1.7}

/* ===== 产品分类 ===== */
.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.prod-card{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:#fff;transition:all var(--trans);cursor:pointer}
.prod-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--primary)}
.prod-img{height:200px;position:relative;overflow:hidden;background:#f0f2f5}
.prod-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.prod-card:hover .prod-img img{transform:scale(1.08)}
.prod-body{padding:20px}
.prod-body h4{font-size:17px;font-weight:700;margin-bottom:8px}
.prod-body p{font-size:13px;color:var(--ink-3);line-height:1.6}

/* ===== 案例 ===== */
.cases{background:var(--bg-soft)}
.case-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.case-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:all var(--trans);display:grid;grid-template-columns:1fr 1.3fr}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.prod-banner{width:100%;max-height:340px;border-radius:var(--radius);margin-bottom:28px;box-shadow:var(--shadow-sm);background:#f5f6fa;overflow:hidden;display:flex;align-items:center;justify-content:center}
.prod-banner img{max-width:100%;max-height:340px;width:100%;height:auto;object-fit:contain;object-position:center;border-radius:var(--radius)}
.case-img{position:relative;background:#f5f6fa;overflow:hidden;display:flex;align-items:center;justify-content:center}
.case-img img{max-width:100%;max-height:420px;width:100%;height:auto;object-fit:contain;transition:transform .5s ease;border-radius:6px}
.case-card:hover .case-img img{transform:scale(1.03)}
.case-body{padding:28px}
.case-brand{font-size:13px;color:var(--primary);font-weight:700;letter-spacing:1px;margin-bottom:8px}
.case-body h4{font-size:20px;font-weight:700;margin-bottom:12px}
.case-body p{font-size:14px;color:var(--ink-3);margin-bottom:14px}
.case-meta{display:flex;gap:16px;font-size:13px;color:var(--ink-2);flex-wrap:wrap}
.case-meta span b{color:var(--primary)}

/* ===== 详情页 ===== */
.detail-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:40px;box-shadow:var(--shadow-sm)}
.detail-cover{margin:0 0 26px;border-radius:var(--radius-sm);overflow:hidden;background:var(--bg-soft)}
.detail-cover img{display:block;width:100%;height:auto;max-height:460px;object-fit:cover}
.detail-summary{font-size:15px;color:var(--ink-2);line-height:1.8;background:var(--bg-soft);border-left:3px solid var(--primary);padding:14px 18px;border-radius:var(--radius-sm);margin-bottom:22px}
.detail-body{font-size:15px;color:var(--ink-2);line-height:1.9}
.detail-body p{margin-bottom:14px}
.detail-body ul{margin:12px 0}
.detail-body ul li{padding:5px 0 5px 20px;position:relative;font-size:14px}
.detail-body ul li::before{content:"";position:absolute;left:0;top:13px;width:5px;height:5px;border-radius:50%;background:var(--accent)}
.detail-body img{max-width:100%;height:auto;border-radius:var(--radius-sm)}
@media (max-width:640px){.detail-card{padding:24px}}

/* ===== FAQ ===== */
.faq-wrap{max-width:880px;margin:0 auto}
.faq-item{border:1px solid var(--line);border-radius:var(--radius-sm);margin-bottom:14px;overflow:hidden;background:#fff;transition:all var(--trans)}
.faq-item.active{border-color:var(--primary);box-shadow:var(--shadow-sm)}
.faq-q{padding:20px 24px;display:flex;justify-content:space-between;align-items:center;cursor:pointer;font-weight:600;font-size:16px}
.faq-q .toggle{font-size:22px;color:var(--primary);transition:transform var(--trans);font-weight:300}
.faq-item.active .toggle{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height var(--trans);padding:0 24px}
.faq-item.active .faq-a{max-height:400px;padding:0 24px 22px}
.faq-a p{color:var(--ink-3);font-size:15px;line-height:1.8}

/* ===== CTA ===== */
.cta-band{background:linear-gradient(120deg,var(--primary),#e23852);color:#fff;padding:56px 0;border-radius:0}
.cta-band .container{display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.cta-band h3{font-size:30px;font-weight:800;margin-bottom:8px}
.cta-band p{opacity:.9}
.cta-band .btn-light{font-weight:700;padding:14px 32px;font-size:15px}

/* ===== 页脚 ===== */
.footer{background:#111418;color:#b9bdc6;padding:64px 0 0}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.08)}
.foot-brand .logo{color:#fff;margin-bottom:16px}
.foot-brand p{font-size:14px;line-height:1.8;color:#8a8f9a;margin-bottom:16px}
.foot h5{color:#fff;font-size:15px;margin-bottom:18px;font-weight:600}
.foot ul li{margin-bottom:10px;font-size:14px}
.foot ul li a:hover{color:#fff}
.foot-contact li{display:flex;gap:10px;margin-bottom:14px;font-size:14px}
.foot-contact li b{color:#fff;min-width:48px}
.foot-bottom{padding:20px 0;text-align:center;font-size:13px;color:#6b717c}
.foot-bottom a{color:#6b717c}

/* ===== 内页通用 ===== */
.page-hero{background:linear-gradient(120deg,#0e1116,#1a1d23);color:#fff;padding:80px 0 70px;position:relative;overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 70% 50%,rgba(200,16,46,.3),transparent 55%)}
.page-hero .container{position:relative;z-index:2}
.page-hero h1{font-size:42px;font-weight:800;margin-bottom:14px}
.page-hero p{font-size:16px;color:#c9ccd4;max-width:600px}
.breadcrumb{font-size:13px;color:#8a8f9a;margin-bottom:18px}
.breadcrumb a:hover{color:#fff}
.breadcrumb span{margin:0 8px}

/* ===== 关于页 ===== */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.about-img{height:480px;border-radius:var(--radius);position:relative;overflow:hidden;background:#1a1d23}
.about-img img{width:100%;height:100%;object-fit:cover;object-position:center}
.about-text h2{font-size:34px;font-weight:800;margin-bottom:20px}
.about-text p{color:var(--ink-3);margin-bottom:16px;font-size:15px}
.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:40px}
.tl-item{text-align:center;padding:24px 16px;background:var(--bg-soft);border-radius:var(--radius-sm)}
.tl-item b{display:block;font-size:28px;color:var(--primary);font-weight:800}
.tl-item span{font-size:13px;color:var(--ink-3);margin-top:6px;display:block}

/* ===== 产品详情卡片 ===== */
.prod-section{margin-bottom:48px}
.prod-section h2{font-size:26px;font-weight:800;margin-bottom:24px;padding-left:14px;border-left:4px solid var(--primary)}
.prod-banner{width:100%;max-height:340px;border-radius:var(--radius);margin-bottom:28px;box-shadow:var(--shadow-sm);background:#f5f6fa;overflow:hidden;display:flex;align-items:center;justify-content:center}
.prod-banner img{max-width:100%;max-height:340px;width:100%;height:auto;object-fit:contain;object-position:center;border-radius:var(--radius)}
.prod-cat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.prod-cat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;transition:all var(--trans)}
.prod-cat:hover{border-color:var(--primary);box-shadow:var(--shadow-sm);transform:translateY(-3px)}
.prod-cat h4{font-size:17px;font-weight:700;margin-bottom:10px;display:flex;align-items:center;gap:10px}
.prod-cat h4 .dot{width:8px;height:8px;border-radius:50%;background:var(--primary)}
.prod-cat p{font-size:13px;color:var(--ink-3);line-height:1.7}
.prod-cat ul{margin-top:12px}
.prod-cat ul li{font-size:13px;color:var(--ink-2);padding:4px 0;padding-left:16px;position:relative}
.prod-cat ul li::before{content:"";position:absolute;left:0;top:12px;width:5px;height:5px;border-radius:50%;background:var(--accent)}

/* ===== 解决方案 ===== */
.sol-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.sol-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:36px;transition:all var(--trans)}
.sol-card:hover{border-color:var(--primary);box-shadow:var(--shadow)}
.sol-icon{width:64px;height:64px;border-radius:16px;background:linear-gradient(135deg,var(--primary-light),#f5e6d3);display:flex;align-items:center;justify-content:center;font-size:32px;margin-bottom:20px}
.sol-card h3{font-size:22px;font-weight:700;margin-bottom:12px}
.sol-card p{color:var(--ink-3);font-size:14px;margin-bottom:16px}
.sol-list li{padding:6px 0;font-size:14px;color:var(--ink-2);padding-left:20px;position:relative}
.sol-list li::before{content:"✓";position:absolute;left:0;color:var(--primary);font-weight:700}

/* ===== 联系页 ===== */
.contact-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:40px}
.contact-info{background:linear-gradient(135deg,#1a1d23,#2a1f26);color:#fff;border-radius:var(--radius);padding:40px}
.contact-info h3{font-size:24px;margin-bottom:24px}
.contact-info .item{display:flex;gap:16px;margin-bottom:24px;align-items:flex-start}
.contact-info .item .ic{width:44px;height:44px;border-radius:12px;background:rgba(200,16,46,.25);display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0}
.contact-info .item b{display:block;color:#fff;margin-bottom:4px}
.contact-info .item span{color:#c9ccd4;font-size:14px}
.contact-info .item span a{color:#ffd166;text-decoration:none;border-bottom:1px solid rgba(255,209,102,.4)}
.contact-info .item span a:hover{color:#fff;border-bottom-color:#fff}
.contact-info .qrcode-block{display:flex;gap:14px;margin-top:32px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);justify-content:flex-start}
.contact-info .qrcode-item{text-align:center}
.contact-info .qrcode-item img{width:96px;height:96px;display:block;background:#fff;border-radius:10px;padding:6px;margin:0 auto 10px}
.contact-info .qrcode-item span{color:#c9ccd4;font-size:13px}
.contact-form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:36px;box-shadow:var(--shadow-sm)}
.contact-form h3{font-size:22px;margin-bottom:20px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-group{margin-bottom:18px}
.form-group label{display:block;font-size:13px;font-weight:600;margin-bottom:6px;color:var(--ink-2)}
.form-group input,.form-group select,.form-group textarea{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:8px;font-size:14px;font-family:inherit;transition:border var(--trans);background:var(--bg-soft)}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:var(--primary);background:#fff}
.form-group textarea{resize:vertical;min-height:110px}

/* ===== 响应式 ===== */
@media (max-width:1024px){
  .hero .container{grid-template-columns:1fr}
  .hero-visual{display:none}
  .prod-grid{grid-template-columns:repeat(2,1fr)}
  .case-card{grid-template-columns:1fr}
  .case-img{min-height:auto}
  .foot-grid{grid-template-columns:1fr 1fr}
  .adv-grid{grid-template-columns:1fr}
  .sol-grid{grid-template-columns:1fr}
  .prod-cat-grid{grid-template-columns:1fr 1fr}
  .about-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .nav-links{display:none}
  .timeline{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  .hero h1{font-size:34px}
  .section{padding:60px 0}
  .section-title{font-size:28px}
  .prod-grid{grid-template-columns:1fr}
  .prod-cat-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .hero-stats{flex-wrap:wrap;gap:24px}
  .form-row{grid-template-columns:1fr}
  .topbar{display:none}
  .nav-phone{display:none}
}