/* fiberlasermarker.com — Blueprint Engineering */
:root{
  --bg:#0A1628; --panel:#10233D; --line:#2A4A6B; --txt:#EAF2FA; --muted:#9FB3C8;
  --laser:#E63946; --ok:#3FA34D;
}
*{box-sizing:border-box;margin:0;padding:0}
body{background:var(--bg);color:var(--txt);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  line-height:1.7;font-size:17px;
  background-image:linear-gradient(rgba(42,74,107,.18) 1px,transparent 1px),
    linear-gradient(90deg,rgba(42,74,107,.18) 1px,transparent 1px);
  background-size:44px 44px;}
.mono{font-family:ui-monospace,"SF Mono",SFMono-Regular,Consolas,monospace}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px}
a{color:#7FB3E0}
header.site{border-bottom:1px solid var(--line);background:rgba(10,22,40,.92);position:sticky;top:0;z-index:50}
.nav{display:flex;align-items:center;gap:28px;padding:14px 0}
.logo{font-weight:800;font-size:20px;letter-spacing:.06em;color:var(--txt);text-decoration:none}
.logo .dot{position:relative;display:inline-block;width:13px;height:13px;margin-right:8px;vertical-align:baseline}
.logo .dot::before{content:"";position:absolute;inset:0;border:2px solid var(--laser);border-radius:50%}
.logo .dot::after{content:"+";position:absolute;left:50%;top:50%;transform:translate(-50%,-56%);color:var(--laser);font-size:11px;line-height:1;font-weight:700}
.nav nav{margin-left:auto;display:flex;gap:22px}
.nav nav a{color:var(--muted);text-decoration:none;font-size:15px;position:relative}
/* 纯 CSS 汉堡菜单（checkbox hack）：汉堡相关样式只出现在 max-width 媒体查询内；
   桌面端隐藏靠 HTML hidden 属性（UA 样式），媒体查询内 author 样式覆盖显示 */
@media (hover:hover){
.nav nav a:hover{color:var(--txt)}
.nav nav a:hover::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;background:var(--laser)}
}
.nav nav a:active{color:var(--txt)}
.hero{position:relative;overflow:hidden;background:var(--bg)}
.hero-bg{padding:112px 0 96px}
.hero-bg-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center;z-index:0}
.hero-bg::before{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(100deg,rgba(10,22,40,.94) 0%,rgba(10,22,40,.84) 42%,rgba(10,22,40,.48) 72%,rgba(10,22,40,.6) 100%)}
.hero-bg .wrap{position:relative;z-index:2}
.hero-rule{display:block;width:64px;height:3px;background:var(--laser);margin-bottom:22px}
.hero h1{font-size:46px;line-height:1.2;max-width:640px;margin-bottom:18px}
.hero p.lead{color:var(--muted);font-size:19px;max-width:600px;margin-bottom:30px}
.laser-line{height:2px;background:linear-gradient(90deg,transparent,var(--laser) 20%,var(--laser) 80%,transparent);position:relative;margin:34px 0}
.laser-line::after{content:"+";position:absolute;right:6%;top:-13px;color:var(--laser);font-size:22px;font-weight:300}
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:0 0 16px}
.table-wrap table{margin:0}
.badges{display:flex;gap:10px;margin-top:12px;flex-wrap:wrap}
.badge{border:1px solid var(--line);border-radius:20px;padding:4px 14px;font-size:13px;color:var(--muted);background:var(--panel)}
.badge.ok{border-color:var(--ok);color:#BDE3C3}
.btn{display:inline-block;background:var(--laser);color:#fff;text-decoration:none;font-weight:700;
  padding:14px 30px;border-radius:4px;font-size:16px;position:relative}
@media (hover:hover){
.btn::after{content:"";position:absolute;left:18px;right:18px;bottom:9px;height:2px;background:var(--laser);
  transform:scaleX(0);transform-origin:left center;transition:transform .28s cubic-bezier(.2,.7,.3,1)}
.btn:hover::after{transform:scaleX(1)}
.btn:not(.ghost)::after{background:rgba(255,255,255,.85)}
.btn.ghost:hover{border-color:var(--laser)}
}
@media (prefers-reduced-motion:reduce){.btn::after{transition:none}}
.btn:active{transform:translateY(1px);filter:brightness(.92)}
.btn.ghost{background:transparent;border:1px solid var(--line);color:var(--txt)}
.cta-row{display:flex;gap:14px;flex-wrap:wrap}
.trustbar{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--panel)}
.trustbar .wrap{display:flex;gap:36px;flex-wrap:wrap;padding:16px 24px;font-size:14px;color:var(--muted)}
.trustbar b{color:var(--txt)}
section.block{padding:56px 0}
h2.sec{font-size:30px;margin-bottom:8px}
.sec-sub{color:var(--muted);margin-bottom:28px;max-width:760px}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:6px;padding:26px;text-decoration:none;color:var(--txt);display:block}
@media (hover:hover){
.card:hover{border-color:var(--laser)}
}
.card:active{border-color:var(--laser)}
.cards > *,.kv > *,.trustbar .wrap > *,footer.site .cols > *{min-width:0}
.card h3{font-size:19px;margin-bottom:8px}
.card p{color:var(--muted);font-size:15px}
.card .go{color:var(--laser);font-size:14px;font-weight:700;margin-top:12px;display:block}
article.prose{max-width:820px}
article.prose h2{font-size:26px;margin:34px 0 12px}
article.prose h3{font-size:20px;margin:26px 0 10px}
article.prose p{margin:0 0 16px;color:#D6E3F0}
article.prose ul,article.prose ol{margin:0 0 16px 24px;color:#D6E3F0}
article.prose table{width:100%;border-collapse:collapse;margin:18px 0;font-size:15px}
article.prose th,article.prose td{border:1px solid var(--line);padding:10px 12px;text-align:left}
article.prose th{background:var(--panel)}
.crumb{font-size:14px;color:var(--muted);margin:26px 0 6px}
.crumb a{color:var(--muted)}
.cta-band{background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:40px;margin:56px 0;text-align:center}
.cta-band h2{margin-bottom:10px}
.cta-band p{color:var(--muted);margin-bottom:22px}
footer.site{border-top:1px solid var(--line);margin-top:40px;padding:40px 0 30px;color:var(--muted);font-size:14px}
footer.site .cols{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px;margin-bottom:26px}
footer.site h4{color:var(--txt);font-size:15px;margin-bottom:12px}
footer.site a{color:var(--muted);text-decoration:none;display:block;margin-bottom:8px}
@media (hover:hover){
footer.site a:hover{color:var(--txt)}
}
footer.site a:active{color:var(--txt)}
.copy{border-top:1px solid var(--line);padding-top:18px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
.kv{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin:20px 0}
.kv div{background:var(--panel);border:1px solid var(--line);border-radius:6px;padding:14px 18px}
.kv b{display:block;font-size:13px;color:var(--muted);font-weight:600;text-transform:uppercase;letter-spacing:.05em}
@media(max-width:860px){.hero-bg{padding:76px 0 64px}.hero-bg::before{background:linear-gradient(180deg,rgba(10,22,40,.93) 0%,rgba(10,22,40,.8) 55%,rgba(10,22,40,.9) 100%)}.cards{grid-template-columns:1fr}.hero h1{font-size:32px}footer.site .cols{grid-template-columns:1fr 1fr}
.nav{position:relative;flex-wrap:wrap}
.nav-burger{display:flex;margin-left:auto;flex-direction:column;justify-content:center;gap:5px;padding:12px 8px;cursor:pointer;background:none;border:0}
.nav-burger span{display:block;width:24px;height:2px;background:var(--laser)}
.nav nav{display:none;position:absolute;top:100%;left:0;right:0;margin:0;background:rgba(10,22,40,.98);flex-direction:column;gap:0;padding:8px 0;z-index:60;border-top:1px solid var(--line)}
.nav nav a{padding:12px 20px;font-size:16px}
.nav-toggle:checked ~ nav{display:flex}}

/* contact form (web3forms) */
.form-wrap{max-width:640px;margin:0 auto}
.form-wrap form{display:grid;gap:14px;margin-top:18px}
.form-wrap label{display:grid;gap:6px;font-size:14px;color:var(--muted)}
.form-wrap input,.form-wrap textarea{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);border-radius:8px;color:#fff;padding:12px 14px;font-size:15px;width:100%;box-sizing:border-box}
.form-wrap input:focus,.form-wrap textarea:focus{outline:none;border-color:var(--laser)}
.form-wrap button{justify-self:start}