/* ============================================================
   焊记云首页（产品宣传 + 激活服务）专用样式
   深色工业风 · 无外部依赖 · 与 site.css 互不影响
   ============================================================ */
:root{
  --bg:#0a1420; --bg2:#0d1b2c; --panel:#122438; --panel2:#152a42;
  --line:#1f3a55; --line2:#2a4a6b;
  --teal:#35dcc4; --teal-dim:#1fa894; --teal-glow:rgba(53,220,196,.14);
  --orange:#ff9d3c; --white:#eef6fc; --muted:#93acc4; --muted2:#6f8aa5;
  --radius:10px;
  --shadow:0 18px 50px rgba(2,8,16,.5);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:72px}
body{
  font-family:"Segoe UI","Microsoft YaHei UI","Microsoft YaHei","PingFang SC",sans-serif;
  background:var(--bg);color:var(--white);line-height:1.75;font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--teal);text-decoration:none}
ul{list-style:none}
.wrap{max-width:1140px;margin:0 auto;padding:0 22px}
.skip-link{position:absolute;left:-999px;top:0;background:var(--teal);color:#04241c;padding:8px 16px;border-radius:0 0 8px 0;z-index:200;font-weight:700}
.skip-link:focus{left:0}

/* ---------- 顶部导航 ---------- */
.nav{
  position:sticky;top:0;z-index:50;
  background:rgba(10,20,32,.9);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav .wrap{display:flex;align-items:center;gap:14px;height:62px}
.nav .logo{width:32px;height:32px;object-fit:contain;flex:none}
.nav .brand{font-size:17px;font-weight:700;letter-spacing:1px;white-space:nowrap}
.nav .brand em{font-style:normal;color:var(--teal);font-size:13px;margin-left:6px;font-weight:600}
.nav .links{margin-left:auto;display:flex;gap:4px;font-size:14px;align-items:center;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
.nav .links::-webkit-scrollbar{display:none}
.nav .links a{color:var(--muted);padding:6px 12px;border-radius:6px;white-space:nowrap;transition:color .15s,background .15s}
.nav .links a:hover{color:var(--teal);background:rgba(53,220,196,.07)}
.nav .links a.account{color:var(--teal);border:1px solid var(--teal-dim);margin-left:6px}
.nav .links a.admin{font-size:12.5px;color:var(--muted2)}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:linear-gradient(118deg,#0a1420 34%,#103048 100%)}
.hero .bgimg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.3}
.hero .veil{position:absolute;inset:0;background:linear-gradient(93deg,rgba(9,18,30,.96) 30%,rgba(9,18,30,.72) 58%,rgba(9,18,30,.3))}
.hero .grid{position:relative;display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,.85fr);gap:44px;align-items:center;padding:78px 22px 66px}
.hero .badge{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--teal-dim);color:var(--teal);font-size:12.5px;padding:4px 14px;border-radius:999px;margin-bottom:20px;letter-spacing:1px}
.hero .badge::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--teal);box-shadow:0 0 10px var(--teal)}
.hero h1{font-size:clamp(28px,4vw,42px);line-height:1.32;letter-spacing:1px;font-weight:800}
.hero h1 em{font-style:normal;color:var(--teal)}
.hero .sub{font-size:16.5px;color:var(--muted);margin:16px 0 6px;max-width:34em}
.hero .slogan{font-size:14px;color:var(--orange);margin-bottom:28px}
.hero .cta{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-block;padding:11px 26px;border-radius:8px;font-size:15px;cursor:pointer;border:1px solid transparent;transition:transform .15s,background .15s,border-color .15s}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--teal);color:#04241c;font-weight:700}
.btn-primary:hover{background:#5cf0da}
.btn-ghost{border-color:var(--line2);color:var(--white)}
.btn-ghost:hover{border-color:var(--teal);color:var(--teal)}
.hero .stat{display:flex;gap:38px;margin-top:36px;flex-wrap:wrap}
.hero .stat b{display:block;font-size:27px;color:var(--teal);font-weight:800;line-height:1.2}
.hero .stat span{font-size:12.5px;color:var(--muted2)}
/* hero 右侧服务状态卡 */
.console{
  background:rgba(13,25,42,.82);border:1px solid var(--line2);border-radius:14px;
  padding:22px 24px;box-shadow:var(--shadow);backdrop-filter:blur(6px);
}
.console .top{display:flex;align-items:center;gap:9px;font-size:13px;color:var(--muted);padding-bottom:12px;border-bottom:1px dashed var(--line);letter-spacing:1px}
.console .top .dot{width:8px;height:8px;border-radius:50%;background:var(--teal);box-shadow:0 0 8px var(--teal);animation:pulse 2.2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.console .top .code{margin-left:auto;color:var(--muted2);font-size:12px}
.console .row{display:flex;justify-content:space-between;align-items:center;padding:11px 0;border-bottom:1px solid rgba(31,58,85,.55);font-size:13.5px}
.console .row span{color:var(--muted2)}
.console .row b{color:var(--white);font-weight:600}
.console .row b.ok{color:var(--teal)}
.console .foot{padding-top:12px;font-size:11px;color:var(--muted2);letter-spacing:3px;text-align:center}

/* ---------- 区块通用 ---------- */
section{padding:70px 0}
.sec-head{text-align:center;margin-bottom:44px}
.sec-head .eyebrow{font-size:12px;letter-spacing:4px;color:var(--teal-dim);margin-bottom:8px;font-weight:700}
.sec-head h2{font-size:clamp(22px,3vw,30px);letter-spacing:2px;font-weight:800}
.sec-head h2::after{content:"";display:block;width:52px;height:3px;background:var(--teal);margin:14px auto 0;border-radius:2px}
.sec-head p{color:var(--muted);margin-top:12px;font-size:14.5px}

/* ---------- 行业痛点 ---------- */
.pain-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px}
.pain{background:var(--panel);border:1px solid var(--line);border-left:4px solid var(--orange);border-radius:var(--radius);padding:22px;transition:transform .2s,border-color .2s}
.pain:hover{transform:translateY(-3px);border-color:var(--line2)}
.pain h3{font-size:16px;margin-bottom:8px;color:var(--orange)}
.pain p{font-size:13.5px;color:var(--muted)}

/* ---------- 八大功能 ---------- */
#features{background:var(--bg2)}
.feat{display:flex;gap:38px;align-items:center;margin-bottom:58px;flex-wrap:wrap}
.feat:last-child{margin-bottom:0}
.feat:nth-child(even){flex-direction:row-reverse}
.feat .shot{
  flex:1 1 440px;position:relative;border:1px solid var(--line2);border-radius:12px;overflow:hidden;
  cursor:zoom-in;background:#091120;box-shadow:var(--shadow);
  transition:border-color .2s;
}
.feat .shot:hover{border-color:var(--teal-dim)}
.feat .shot img{width:100%;aspect-ratio:16/10;object-fit:cover;object-position:top}
.feat .shot img.crop-right{object-position:78% 45%}
.feat .shot .zoom{position:absolute;right:10px;top:10px;background:rgba(9,17,32,.82);border:1px solid var(--teal-dim);color:var(--teal);font-size:12px;padding:3px 12px;border-radius:999px;pointer-events:none;letter-spacing:1px}
.duo{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.duo img{aspect-ratio:auto}
.feat .desc{flex:1 1 360px}
.feat .no{font-size:12px;color:var(--teal);letter-spacing:3px;font-weight:700}
.feat h3{font-size:21px;margin:8px 0 12px;font-weight:800}
.feat p{font-size:14.5px;color:var(--muted);margin-bottom:10px}
.feat li{padding-left:18px;position:relative;margin-bottom:7px;font-size:13.5px;color:var(--muted)}
.feat li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:2px;background:var(--teal-dim)}

/* ---------- 专业内核 ---------- */
.pro-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:18px}
.pro{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:24px;transition:transform .2s,border-color .2s}
.pro:hover{transform:translateY(-3px);border-color:var(--line2)}
.pro h3{font-size:16px;color:var(--teal);margin-bottom:12px;font-weight:700}
.pro p,.pro li{font-size:13.5px;color:var(--muted)}
.pro li{padding-left:16px;position:relative;margin-bottom:6px}
.pro li::before{content:"›";position:absolute;left:2px;color:var(--teal-dim);font-weight:700}
.pro code{background:#0a1a2c;border:1px solid var(--line);border-radius:4px;padding:1px 6px;font-size:12.5px;color:var(--white);font-family:Consolas,"Courier New",monospace}
.pro .std{display:inline-block;margin-bottom:12px;padding:3px 10px;border-left:3px solid var(--teal);background:#0a1a2c;font-size:12.5px;color:var(--teal)}

/* ---------- 适用角色 & 总结 ---------- */
#roles{background:var(--bg2)}
.role-row{display:flex;gap:12px;flex-wrap:wrap;justify-content:center;margin-bottom:46px}
.role{border:1px solid var(--line2);border-radius:999px;padding:8px 22px;font-size:14px;color:var(--white);background:var(--panel)}
.final{text-align:center;background:linear-gradient(120deg,#0e2438,#123a4a);border:1px solid var(--line2);border-radius:14px;padding:46px 24px}
.final h2{font-size:clamp(20px,3vw,26px);margin-bottom:10px;font-weight:800}
.final p{color:var(--muted);margin-bottom:24px}
.final .tags{color:var(--teal);letter-spacing:6px;font-size:14px;margin-top:20px}

/* ---------- 激活服务区 ---------- */
#activate{background:linear-gradient(180deg,var(--bg) 0%,#0c1e31 100%)}
.service-grid{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,.9fr);gap:22px;align-items:start}
.svc-panel{background:var(--panel2);border:1px solid var(--line2);border-radius:14px;padding:26px;box-shadow:var(--shadow)}
.svc-panel .kicker{font-size:11.5px;letter-spacing:3px;color:var(--teal-dim);margin-bottom:16px;font-weight:700}
.svc-panel label{display:block;font-size:13.5px;color:var(--muted);margin-bottom:14px}
.svc-panel textarea,.svc-panel input[type=text],.svc-panel input[type=email]{
  width:100%;margin-top:6px;background:#0a1626;border:1px solid var(--line2);border-radius:8px;
  color:var(--white);font:inherit;font-size:14px;padding:10px 12px;transition:border-color .15s;
}
.svc-panel textarea{min-height:110px;resize:vertical;font-family:Consolas,"Courier New",monospace;font-size:13px}
.svc-panel textarea:focus,.svc-panel input:focus{outline:none;border-color:var(--teal);box-shadow:0 0 0 3px var(--teal-glow)}
.check-line{display:flex;gap:9px;align-items:flex-start;font-size:13px;color:var(--muted)}
.check-line input{margin-top:4px;accent-color:var(--teal);flex:none}
.form-message{margin-top:12px;font-size:13.5px;min-height:0}
.form-message.success{color:var(--teal)}
.form-message.error{color:#ff7d6b}
.process-step{display:flex;gap:14px;margin-bottom:16px}
.process-step span{flex:none;width:30px;height:30px;border-radius:50%;border:1px solid var(--teal-dim);color:var(--teal);display:flex;align-items:center;justify-content:center;font-size:13.5px;font-weight:700}
.process-step strong{display:block;font-size:14.5px}
.process-step p{font-size:13px;color:var(--muted2)}
.privacy-note{margin-top:18px;padding:12px 14px;border:1px dashed var(--line2);border-radius:8px;font-size:12.5px;color:var(--muted2)}
/* 查询进度 */
.status-form{display:flex;gap:12px;flex-wrap:wrap;margin-top:6px}
.status-form input{flex:1 1 320px;background:#0a1626;border:1px solid var(--line2);border-radius:8px;color:var(--white);font:inherit;font-size:14px;padding:10px 12px}
.status-form input:focus{outline:none;border-color:var(--teal);box-shadow:0 0 0 3px var(--teal-glow)}
.btn-secondary{background:transparent;border:1px solid var(--teal-dim);color:var(--teal);font-weight:700}
.btn-secondary:hover{background:var(--teal-glow)}
.status-result{display:none;margin-top:16px;gap:12px;align-items:flex-start;background:#0d1e33;border:1px solid var(--line);border-radius:10px;padding:16px;font-size:13.5px}
.status-result.visible{display:flex}
.status-result .status-icon{flex:none;width:26px;height:26px;border-radius:50%;background:var(--teal-glow);color:var(--teal);display:flex;align-items:center;justify-content:center;font-weight:800}
.status-result strong{display:block;margin-bottom:2px}
.status-result p{color:var(--muted2);font-size:12.5px}
.status-result.error-box{border-color:#7a3a32;color:#ffb0a5}
.license-result{width:100%;margin-top:10px;background:#0a1626;border:1px solid var(--line2);border-radius:8px;color:var(--teal);font-family:Consolas,"Courier New",monospace;font-size:12.5px;padding:10px;min-height:84px}

/* ---------- FAQ ---------- */
.faq-list{max-width:820px;margin:0 auto;display:grid;gap:12px}
.faq-list details{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:0 20px;transition:border-color .2s}
.faq-list details[open]{border-color:var(--teal-dim)}
.faq-list summary{cursor:pointer;padding:16px 0;font-size:15px;font-weight:600;list-style:none;position:relative;padding-right:30px}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{content:"+";position:absolute;right:4px;top:50%;transform:translateY(-50%);color:var(--teal);font-size:20px;font-weight:400;transition:transform .2s}
.faq-list details[open] summary::after{transform:translateY(-50%) rotate(45deg)}
.faq-list details p{padding:0 0 16px;font-size:13.5px;color:var(--muted)}

/* ---------- 页脚 ---------- */
footer{border-top:1px solid var(--line);background:#081018;padding:34px 0 40px;font-size:13px;color:var(--muted2)}
footer .wrap{display:flex;flex-wrap:wrap;gap:14px 26px;align-items:center;justify-content:center;text-align:center}
footer .brand{font-weight:700;color:var(--muted);letter-spacing:1px}
footer .slogan{letter-spacing:3px;font-size:12px}

/* ---------- Lightbox ---------- */
.lightbox{position:fixed;inset:0;background:rgba(4,10,18,.94);display:none;align-items:center;justify-content:center;z-index:100;cursor:zoom-out;padding:24px}
.lightbox.on{display:flex}
.lightbox img{max-width:96vw;max-height:92vh;border-radius:8px;box-shadow:0 0 48px rgba(0,0,0,.7)}
.lightbox .hint{position:fixed;bottom:18px;left:50%;transform:translateX(-50%);color:var(--muted2);font-size:12px;letter-spacing:2px}

/* ---------- 渐显动画 ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .console .top .dot{animation:none}
}

/* ---------- 响应式 ---------- */
@media (max-width:960px){
  .hero .grid{grid-template-columns:1fr;gap:34px;padding-top:60px}
  .console{max-width:460px}
  .service-grid{grid-template-columns:1fr}
}
@media (max-width:760px){
  section{padding:54px 0}
  .nav .links a{padding:6px 8px;font-size:13px}
  .feat,.feat:nth-child(even){flex-direction:column}
  .feat .shot{flex:auto;width:100%}
  .duo{grid-template-columns:1fr}
  .hero .stat{gap:26px}
  .svc-panel{padding:20px}
}
@media (max-width:480px){
  .nav .brand em{display:none}
  .hero .cta .btn{width:100%;text-align:center}
}