/* ============================================================
   lasercladding 激光熔覆厂家 — 共享样式
   工业精密风：深海军蓝 + 钴蓝主色 + 激光青强调 + 琥珀热线
   移动优先，桌面在 min-width 断点内扩展
   ============================================================ */

:root{
  --ink:#0B1E33;        /* 深海军蓝：页头/页脚/深色区 */
  --ink-2:#0F2B47;
  --slate:#2B3E53;
  --text:#243342;
  --muted:#5B6B7B;
  --brand:#0C6FE0;      /* 钴蓝主色 */
  --brand-d:#0A5BC0;
  --laser:#12B7BE;      /* 激光青强调 */
  --amber:#F0A83C;      /* 热线琥珀 */
  --paper:#F4F7FA;      /* 浅色交替区 */
  --line:#E3E9F0;       /* 发丝线 */
  --white:#FFFFFF;
  --radius:10px;
  --shadow:0 10px 30px rgba(11,30,51,.10);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{font-family:var(--font);color:var(--text);font-size:16px;line-height:1.75;background:var(--white);-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .2s}
a:hover{color:var(--brand-d)}
ul,ol{list-style:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
::selection{background:var(--brand);color:#fff}

/* ---------- 通用按钮 ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:15px;padding:12px 22px;border-radius:6px;border:1px solid transparent;cursor:pointer;line-height:1.2;transition:transform .15s,box-shadow .2s,background .2s,color .2s}
.btn svg{width:16px;height:16px}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-d);color:#fff;box-shadow:0 6px 18px rgba(12,111,224,.35)}
.btn-amber{background:var(--amber);color:#3a2a08}
.btn-amber:hover{background:#e29a27;color:#2a1f05}
.btn-outline{border-color:rgba(255,255,255,.55);color:#fff}
.btn-outline:hover{border-color:#fff;color:#fff;background:rgba(255,255,255,.08)}
.btn-ghost{border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn-lg{padding:15px 28px;font-size:16px}

/* ---------- 头部 ---------- */
.site-header{position:sticky;top:0;z-index:100;background:var(--ink);border-bottom:1px solid rgba(255,255,255,.08)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:11px;color:#fff}
.brand .logo{width:34px;height:34px;flex:none}
.brand .logo img{width:100%;height:100%;object-fit:contain}
.brand .wordmark{display:flex;flex-direction:column;line-height:1.15}
.brand .wordmark b{font-size:19px;letter-spacing:1px;font-weight:700}
.brand .wordmark span{font-size:11px;color:#9fb2c6;letter-spacing:.5px}
.nav{display:none}
.nav ul{display:flex;gap:4px}
.nav a{display:block;color:#d7e2ee;font-size:15px;padding:8px 12px;border-radius:6px;font-weight:500}
.nav a:hover,.nav a.active{color:#fff;background:rgba(255,255,255,.08)}
.header-cta{display:flex;align-items:center;gap:12px}
.header-phone{display:none;align-items:center;gap:9px;color:#fff;font-weight:700;font-size:17px}
.header-phone svg{width:19px;height:19px;color:var(--amber)}
.header-phone small{display:block;font-size:10px;color:#8fa3b8;font-weight:500;letter-spacing:.5px}
.nav-toggle{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border:1px solid rgba(255,255,255,.2);border-radius:8px;background:none;cursor:pointer;color:#fff}
.nav-toggle svg{width:22px;height:22px}

/* 移动端抽屉菜单 */
.drawer{position:fixed;inset:0;background:rgba(5,14,24,.6);z-index:200;opacity:0;pointer-events:none;transition:opacity .25s}
.drawer.open{opacity:1;pointer-events:auto}
.drawer-panel{position:absolute;top:0;right:0;bottom:0;width:min(320px,86%);background:var(--ink);padding:26px 24px;overflow:auto;transform:translateX(100%);transition:transform .28s}
.drawer.open .drawer-panel{transform:none}
.drawer-close{position:absolute;top:16px;right:16px;width:36px;height:36px;border:none;background:rgba(255,255,255,.08);color:#fff;border-radius:8px;cursor:pointer}
.drawer-panel ul li{border-bottom:1px solid rgba(255,255,255,.08)}
.drawer-panel ul a{display:flex;justify-content:space-between;align-items:center;color:#d7e2ee;padding:14px 4px;font-size:16px}
.drawer-panel ul a.active{color:var(--laser)}
.drawer-tel{margin-top:24px;background:rgba(255,255,255,.06);border-radius:10px;padding:16px;color:#fff}
.drawer-tel a{color:var(--amber);font-size:20px;font-weight:700}

/* ---------- Hero 首页 ---------- */
.hero{position:relative;color:#fff;background:var(--ink);overflow:hidden}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center;opacity:.42}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(11,30,51,.94) 0%,rgba(11,30,51,.78) 46%,rgba(11,30,51,.38) 100%)}
.hero-inner{position:relative;z-index:2;padding:84px 20px 64px}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--laser);font-size:13px;letter-spacing:2px;font-weight:600;margin-bottom:18px}
.hero-eyebrow::before{content:"";width:26px;height:2px;background:var(--laser)}
.hero h1{font-size:34px;line-height:1.22;font-weight:800;letter-spacing:.5px;color:#fff;max-width:760px}
.hero h1 em{font-style:normal;color:var(--laser)}
.hero .lead{max-width:640px;color:#dce6f1;font-size:16px;margin:22px 0 30px}
.hero-ctas{display:flex;flex-wrap:wrap;gap:14px}
.hero-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.12);border-radius:12px;margin-top:46px;overflow:hidden}
.hero-stats .stat{background:rgba(11,30,51,.72);padding:18px 16px}
.hero-stats b{display:block;font-size:26px;color:#fff;font-weight:800;line-height:1.1}
.hero-stats b i{font-style:normal;color:var(--laser);font-size:18px}
.hero-stats span{font-size:12.5px;color:#aebfd0;margin-top:4px;display:block}

/* ---------- 区块标题 ---------- */
.sec{padding:70px 0}
.sec.paper{background:var(--paper)}
.sec.ink{background:var(--ink);color:#fff}
.sec-head{max-width:760px;margin-bottom:42px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-head .eyebrow{display:inline-block;color:var(--brand);font-size:13px;font-weight:700;letter-spacing:2px;margin-bottom:12px}
.sec.ink .sec-head .eyebrow{color:var(--laser)}
.sec-head h2{font-size:28px;font-weight:800;color:var(--ink);letter-spacing:.5px}
.sec.ink .sec-head h2{color:#fff}
.sec-head p{color:var(--muted);margin-top:12px;font-size:15.5px}
.sec.ink .sec-head p{color:#aebfd0}
.sec-head .line{width:44px;height:3px;background:var(--laser);border-radius:2px;margin-top:16px}
.sec-head.center .line{margin-left:auto;margin-right:auto}

/* ---------- 服务卡片 ---------- */
.services-grid{display:grid;grid-template-columns:1fr;gap:18px}
.service-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;transition:transform .2s,box-shadow .25s;overflow:hidden}
.service-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--brand);opacity:.15}
.service-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.service-card .ico{width:52px;height:52px;border-radius:12px;display:flex;align-items:center;justify-content:center;color:#fff;background:linear-gradient(135deg,var(--brand),#2aa6e8);margin-bottom:16px}
.service-card .ico svg{width:26px;height:26px}
.service-card h3{font-size:19px;color:var(--ink);font-weight:700;margin-bottom:8px}
.service-card p{color:var(--muted);font-size:14.5px;margin-bottom:16px}
.service-card .tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:16px}
.service-card .tags span{font-size:12px;color:var(--brand-d);background:#eaf3fd;padding:3px 9px;border-radius:20px;font-weight:500}
.service-card .more{font-weight:600;font-size:14.5px;display:inline-flex;align-items:center;gap:6px}
.service-card .more svg{width:14px;height:14px}

/* ---------- 关于 ---------- */
.about-grid{display:grid;grid-template-columns:1fr;gap:34px;align-items:center}
.about-media{position:relative;border-radius:14px;overflow:hidden;box-shadow:var(--shadow)}
.about-media img{width:100%;height:380px;object-fit:cover;object-position:center}
.about-media .badge{position:absolute;left:18px;bottom:18px;background:var(--ink);color:#fff;padding:10px 16px;border-radius:8px;font-size:13px;border-left:3px solid var(--laser)}
.about-copy h3{font-size:24px;font-weight:800;color:var(--ink);margin-bottom:16px;line-height:1.4}
.about-copy p{color:var(--muted);margin-bottom:16px}
.about-points{display:grid;grid-template-columns:1fr;gap:12px;margin:20px 0}
.about-points li{display:flex;gap:10px;align-items:flex-start;color:var(--text);font-size:15px}
.about-points svg{width:20px;height:20px;color:var(--laser);flex:none;margin-top:2px}

/* ---------- 优势 ---------- */
.adv-grid{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:12px;overflow:hidden}
.adv-card{background:#fff;padding:26px 22px}
.adv-card .num{font-size:12px;color:var(--laser);font-weight:700;letter-spacing:1px;margin-bottom:10px}
.adv-card h4{font-size:17px;color:var(--ink);font-weight:700;margin-bottom:8px}
.adv-card p{color:var(--muted);font-size:14px}

/* ---------- 应用案例 ---------- */
.cases-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.case-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:transform .2s,box-shadow .25s}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.case-media{position:relative;aspect-ratio:4/3;overflow:hidden;background:#0d1c2e}
.case-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.case-card:hover .case-media img{transform:scale(1.05)}
.case-media .tag{position:absolute;left:12px;top:12px;background:rgba(11,30,51,.82);color:#fff;font-size:12px;padding:4px 10px;border-radius:6px}
.case-body{padding:18px 18px 20px;display:flex;flex-direction:column;flex:1}
.case-body h3{font-size:17px;font-weight:700;color:var(--ink);line-height:1.45;margin-bottom:8px}
.case-body p{color:var(--muted);font-size:13.5px;flex:1}
.case-body .more{margin-top:12px;font-size:13.5px;font-weight:600;color:var(--brand);display:inline-flex;gap:6px;align-items:center}
.case-body .more svg{width:14px;height:14px}

/* ---------- 技术知识点 ---------- */
.tech-list{display:grid;grid-template-columns:1fr;gap:16px}
.tech-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.tech-item h4{font-size:17px;font-weight:700;color:var(--ink);margin-bottom:8px}
.tech-item p{color:var(--muted);font-size:14px}

/* ---------- 客户评价 ---------- */
.testi-grid{display:grid;grid-template-columns:1fr;gap:18px}
.testi-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;position:relative}
.testi-card::before{content:"“";position:absolute;top:6px;left:16px;font-size:56px;color:var(--laser);opacity:.35;font-family:Georgia,serif;line-height:1}
.testi-card .quote{font-size:15px;color:var(--text);padding-top:14px}
.testi-card .who{margin-top:16px;display:flex;align-items:center;gap:10px;color:var(--muted);font-size:13.5px}
.testi-card .who .dot{width:34px;height:34px;border-radius:50%;background:#dfe8f1;color:var(--slate);display:flex;align-items:center;justify-content:center;font-weight:700;flex:none}

/* ---------- CTA 带 ---------- */
.cta-band{position:relative;background:var(--ink);color:#fff;overflow:hidden}
.cta-band .bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.22}
.cta-inner{position:relative;z-index:2;padding:58px 20px;display:flex;flex-direction:column;gap:22px}
.cta-inner h2{font-size:26px;font-weight:800;color:#fff}
.cta-inner p{color:#c4d2e1;max-width:640px}
.cta-row{display:flex;flex-wrap:wrap;gap:16px;align-items:center}
.cta-tel{font-size:26px;font-weight:800;color:var(--amber);display:inline-flex;align-items:center;gap:10px}
.cta-tel svg{width:24px;height:24px}
.cta-service{margin-top:6px;color:#aebfd0;font-size:14px}
.cta-service b{color:#e7eef6;font-weight:600}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#b9c8d8;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:34px;padding:54px 20px 40px}
.footer-brand b{display:block;color:#fff;font-size:19px;margin-bottom:10px;letter-spacing:1px}
.footer-brand p{color:#8fa3b8;max-width:340px;line-height:1.8}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px;position:relative;padding-left:14px}
.footer-col h4::before{content:"";position:absolute;left:0;top:5px;bottom:5px;width:3px;background:var(--laser);border-radius:2px}
.footer-col ul li{margin-bottom:10px}
.footer-col a{color:#b9c8d8;transition:color .2s}
.footer-col a:hover{color:#fff}
.footer-contact li{display:flex;gap:10px;margin-bottom:12px;align-items:flex-start}
.footer-contact svg{width:18px;height:18px;color:var(--amber);flex:none;margin-top:3px}
.footer-contact .ph{color:#fff;font-size:17px;font-weight:700}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:22px 0}
.footer-bottom .inner{display:flex;flex-direction:column;gap:8px;align-items:center;justify-content:space-between;text-align:center}
.footer-bottom a{color:#b9c8d8}
.footer-bottom a:hover{color:#fff}
.footer-bottom .beian{display:inline-flex;align-items:center;gap:6px}
.footer-bottom .beian svg{width:14px;height:14px}

/* ---------- 内页 Hero ---------- */
.page-hero{background:var(--ink);color:#fff;padding:46px 0 40px;position:relative;overflow:hidden}
.page-hero::before{content:"";position:absolute;right:-120px;top:-120px;width:360px;height:360px;border:1px solid rgba(18,183,190,.25);border-radius:50%}
.page-hero::after{content:"";position:absolute;right:-40px;top:-40px;width:220px;height:220px;border:1px solid rgba(18,183,190,.18);border-radius:50%}
.page-hero .container{position:relative;z-index:2}
.breadcrumb{display:flex;flex-wrap:wrap;gap:8px;color:#8fa3b8;font-size:13px;margin-bottom:14px;align-items:center}
.breadcrumb a{color:#aebfd0}
.breadcrumb a:hover{color:#fff}
.breadcrumb svg{width:12px;height:12px}
.page-hero h1{font-size:28px;font-weight:800;letter-spacing:.5px}
.page-hero .sub{margin-top:10px;color:#c4d2e1;max-width:720px;font-size:15px}

/* ---------- 正文内容 ---------- */
.content{background:#fff}
.article{max-width:900px}
.article h2{font-size:22px;font-weight:800;color:var(--ink);margin:34px 0 14px;letter-spacing:.3px}
.article h2::before{content:"";display:inline-block;width:4px;height:18px;background:var(--laser);margin-right:10px;border-radius:2px;vertical-align:-2px}
.article h3{font-size:18px;font-weight:700;color:var(--ink);margin:26px 0 12px}
.article p{color:var(--text);margin-bottom:16px}
.article ul.ticks{margin:10px 0 18px}
.article ul.ticks li{position:relative;padding-left:26px;margin-bottom:9px;color:var(--text)}
.article ul.ticks li::before{content:"";position:absolute;left:0;top:5px;width:16px;height:16px;border-radius:50%;background:var(--laser);}
.article ul.ticks li::after{content:"";position:absolute;left:5px;top:10px;width:5px;height:9px;border:solid #fff;border-width:0 2px 2px 0;transform:rotate(45deg)}
.article ul.dots li{position:relative;padding-left:20px;margin-bottom:9px;color:var(--text)}
.article ul.dots li::before{content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:50%;background:var(--brand)}
.article .panel{background:var(--paper);border-left:3px solid var(--brand);border-radius:8px;padding:16px 18px;margin:18px 0;font-size:14.5px}
.article .panel b{color:var(--ink)}
.article table{width:100%;border-collapse:collapse;margin:18px 0;table-layout:fixed}
.article th,.article td{border:1px solid var(--line);padding:11px 12px;text-align:left;font-size:14.5px;vertical-align:top}
.article th{background:var(--ink);color:#fff;font-weight:600}

/* ---------- 信息卡（联系/参数） ---------- */
.info-grid{display:grid;grid-template-columns:1fr;gap:18px}
.info-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.info-card .ico{width:50px;height:50px;border-radius:12px;display:flex;align-items:center;justify-content:center;background:#eaf3fd;color:var(--brand);margin-bottom:16px}
.info-card .ico svg{width:24px;height:24px}
.info-card h3{font-size:17px;font-weight:700;color:var(--ink);margin-bottom:10px}
.info-card p{color:var(--muted);font-size:14.5px}
.info-card .big{color:var(--ink);font-size:22px;font-weight:800}
.info-card .big a{color:var(--ink)}

/* 联系页面行内样式保留给通用 */
.contact-note{background:#fff8ec;border:1px solid #f0d9a8;border-radius:10px;padding:18px 20px;margin:18px 0;color:#6a5118;font-size:15px}
.contact-note b{color:#8a6a1c}

/* ---------- 浮动电话/返回顶部 ---------- */
.float-bar{position:fixed;left:0;right:0;bottom:0;z-index:90;display:flex;background:var(--ink);box-shadow:0 -4px 16px rgba(11,30,51,.2)}
.float-bar a{flex:1;display:flex;align-items:center;justify-content:center;gap:8px;color:#fff;font-weight:600;font-size:15px;padding:15px 8px}
.float-bar .call{background:var(--amber);color:#2a1f05}
.float-bar svg{width:18px;height:18px}
.back-top{position:fixed;right:18px;bottom:76px;z-index:90;width:42px;height:42px;border-radius:10px;background:var(--ink);color:#fff;display:none;align-items:center;justify-content:center;border:1px solid rgba(255,255,255,.15);cursor:pointer;opacity:.9}
.back-top.show{display:flex}
.back-top svg{width:18px;height:18px}

/* ---------- 响应式：桌面 ---------- */
@media (min-width:768px){
  .nav{display:block}
  .nav-toggle{display:none}
  .header-phone{display:flex}
  .header-inner{height:74px}
  .hero-stats{grid-template-columns:repeat(4,1fr)}
  .services-grid{grid-template-columns:repeat(2,1fr)}
  .about-grid{grid-template-columns:1.05fr 1fr;gap:52px}
  .about-points{grid-template-columns:1fr 1fr}
  .adv-grid{grid-template-columns:repeat(4,1fr)}
  .cases-grid{grid-template-columns:repeat(3,1fr)}
  .tech-list{grid-template-columns:repeat(2,1fr)}
  .testi-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr}
  .footer-bottom .inner{flex-direction:row;text-align:left}
  .cta-inner{flex-direction:row;align-items:center;justify-content:space-between}
  .info-grid{grid-template-columns:repeat(3,1fr)}
  .float-bar{display:none}
  .back-top{bottom:24px}
}
@media (min-width:1024px){
  .services-grid{grid-template-columns:repeat(4,1fr)}
  .hero-inner{padding:110px 20px 84px}
  .hero h1{font-size:44px}
  .hero .lead{font-size:17px}
  .sec{padding:88px 0}
  .sec-head h2{font-size:32px}
  .page-hero h1{font-size:34px}
  .page-hero{padding:58px 0 50px}
}

@media (min-width:1200px){
  .cases-grid{grid-template-columns:repeat(3,1fr)}
}

/* ---------- 无障碍 / 动效偏好 ---------- */
:focus-visible{outline:2px solid var(--laser);outline-offset:2px}
@media (prefers-reduced-motion:reduce){
  *{scroll-behavior:auto!important;transition:none!important;animation:none!important}
}