/* ===== Xintian Technology — recycling-ic.com ===== */
:root{
  --navy:#0B1F33;
  --navy-2:#102A42;
  --ink:#14283B;
  --text:#41566B;
  --muted:#718096;
  --bg:#F5F7FA;
  --surface:#FFFFFF;
  --line:#DDE5EC;
  --accent:#0E9BA6;
  --accent-dark:#0B7F88;
  --accent-soft:#E3F3F4;
  --warn:#B45309;
  --mono:"SF Mono",Consolas,"Liberation Mono",Menlo,monospace;
  --sans:"Helvetica Neue",Arial,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei",sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--sans);color:var(--text);background:var(--bg);line-height:1.65;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--accent-dark);text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:1120px;margin:0 auto;padding:0 24px}
.mono{font-family:var(--mono)}

/* ===== 导航 ===== */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(6px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:14px 24px;max-width:1120px;margin:0 auto}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--ink);font-size:18px}
.logo small{display:block;font-weight:400;font-size:11px;color:var(--muted);letter-spacing:.08em;text-transform:uppercase}
.nav-links{display:flex;align-items:center;gap:4px;flex-wrap:wrap}
.nav-links a{color:var(--text);font-size:15px;padding:8px 12px;border-radius:8px;font-weight:500}
.nav-links a:hover{background:var(--bg);text-decoration:none;color:var(--ink)}
.nav-links a.active{color:var(--accent-dark);font-weight:700}
.btn{display:inline-block;font-weight:600;font-size:15px;padding:10px 20px;border-radius:9px;border:1px solid transparent;cursor:pointer;transition:.15s}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-dark);text-decoration:none}
.btn-ghost{color:#fff;border-color:rgba(255,255,255,.5);background:transparent}
.btn-ghost:hover{background:rgba(255,255,255,.12);text-decoration:none}
.btn-dark{background:var(--navy);color:#fff}
.btn-dark:hover{background:var(--navy-2);text-decoration:none}

/* ===== Hero ===== */
.hero{background:var(--navy);color:#E9EFF4;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(14,155,166,.14) 1px,transparent 1px),linear-gradient(90deg,rgba(14,155,166,.14) 1px,transparent 1px);
  background-size:44px 44px;pointer-events:none}
.hero-inner{position:relative;padding-block:92px 70px;max-width:900px}
.kicker{font-family:var(--mono);font-size:13px;letter-spacing:.18em;color:#6FD3D8;text-transform:uppercase;margin-bottom:18px}
.hero h1{font-size:46px;line-height:1.18;color:#fff;font-weight:800;letter-spacing:-.01em;max-width:760px}
.hero .sub{font-size:18px;color:#B8C7D4;margin:20px 0 30px;max-width:680px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.hero-stats{display:flex;flex-wrap:wrap;gap:0 46px;margin-top:52px;padding-top:34px;border-top:1px solid rgba(255,255,255,.14)}
.stat-num{font-family:var(--mono);font-size:30px;font-weight:700;color:#6FD3D8}
.stat-label{font-size:13px;color:#A9BCCB;margin-top:2px}

/* ===== 品牌条 ===== */
.brands{background:var(--surface);border-bottom:1px solid var(--line)}
.brands-inner{display:flex;align-items:center;flex-wrap:wrap;gap:10px 14px;padding:18px 24px;max-width:1120px;margin:0 auto}
.brands-label{font-size:13px;color:var(--muted);font-weight:600;text-transform:uppercase;letter-spacing:.08em}
.brand-chip{font-family:var(--mono);font-size:14px;color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:999px;padding:6px 14px}

/* ===== 区块 ===== */
.section{padding:72px 0}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{margin-bottom:36px;max-width:720px}
.sec-head .kicker{color:var(--accent);margin-bottom:10px}
.sec-head h2{font-size:30px;color:var(--ink);font-weight:800;line-height:1.25}
.sec-head p{margin-top:10px;color:var(--muted);font-size:16px}
.grid{display:grid;gap:18px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:22px;display:flex;flex-direction:column;gap:8px;transition:.15s}
.card:hover{border-color:var(--accent);transform:translateY(-2px)}
.card .mono-tag{font-family:var(--mono);font-size:13px;color:var(--accent-dark);font-weight:700}
.card h3{font-size:18px;color:var(--ink)}
.card p{font-size:14px;color:var(--muted);flex:1}
.card .link{font-size:14px;font-weight:600;color:var(--accent-dark)}
.icon-row{display:flex;align-items:center;gap:10px;margin-bottom:4px}

/* ===== CTA ===== */
.cta{background:var(--navy);color:#E9EFF4;padding:56px 0;position:relative;overflow:hidden}
.cta::before{content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(14,155,166,.12) 1px,transparent 1px),linear-gradient(90deg,rgba(14,155,166,.12) 1px,transparent 1px);
  background-size:44px 44px;pointer-events:none}
.cta-inner{position:relative;max-width:760px;text-align:center;margin:0 auto}
.cta h2{color:#fff;font-size:30px;font-weight:800}
.cta p{color:#B8C7D4;margin:12px 0 26px}
.cta .btn{margin:0 6px}

/* ===== 页脚 ===== */
.footer{background:#081726;color:#93A7B8;padding:52px 0 30px;font-size:14px}
.footer-inner{max-width:1120px;margin:0 auto;padding:0 24px;display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:30px}
.footer h4{color:#DDE7EE;font-size:14px;margin-bottom:12px;text-transform:uppercase;letter-spacing:.08em}
.footer a{color:#93A7B8}
.footer a:hover{color:#fff}
.footer .brand-line{font-weight:700;color:#fff;font-size:17px;margin-bottom:6px}
.footer-bottom{max-width:1120px;margin:34px auto 0;padding:20px 24px 0;border-top:1px solid rgba(255,255,255,.1);font-size:12.5px;color:#64798B}

/* ===== 产品页 ===== */
.page-head{background:var(--navy);color:#E9EFF4;padding:56px 0}
.page-head h1{color:#fff;font-size:34px;font-weight:800}
.page-head p{color:#B8C7D4;margin-top:10px;max-width:680px}
.filters{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin:26px 0 18px}
.filters input,.filters select{font-family:var(--sans);font-size:15px;padding:10px 14px;border:1px solid var(--line);border-radius:9px;background:#fff;color:var(--ink)}
.filters input{flex:1;min-width:220px}
.filters select{min-width:150px}
.count-line{font-size:13.5px;color:var(--muted);margin-bottom:10px}
.count-line b{color:var(--ink)}
.table-wrap{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:auto;max-height:560px}
table.inv{width:100%;border-collapse:collapse;table-layout:fixed;font-size:13.5px}
table.inv thead th{position:sticky;top:0;background:#0B1F33;color:#E9EFF4;font-weight:600;text-align:left;padding:11px 12px;white-space:nowrap;z-index:2}
table.inv tbody td{padding:9px 12px;border-top:1px solid var(--line);vertical-align:top;overflow-wrap:break-word}
table.inv tbody tr:nth-child(even){background:#F8FAFC}
table.inv .part{font-family:var(--mono);font-size:13px;color:var(--ink);font-weight:600}
table.inv .st-eol{color:#B45309;font-weight:600}
table.inv .st-active{color:#1E7D44;font-weight:600}
.empty-state{background:#fff;border:1px dashed var(--line);border-radius:12px;padding:40px;text-align:center;color:var(--muted)}
.load-note{background:var(--accent-soft);border:1px solid #BFE3E4;color:#0B5E63;border-radius:9px;padding:10px 14px;font-size:13.5px;margin:14px 0}

/* ===== 时间轴（质保流程） ===== */
.timeline{margin:8px 0 0}
.tl-item{display:grid;grid-template-columns:64px 24px 1fr;gap:0 14px;align-items:start;padding:18px 0}
.tl-item .tl-num{font-family:var(--mono);font-size:15px;font-weight:700;color:var(--accent);background:var(--accent-soft);border-radius:9px;text-align:center;padding:8px 0;align-self:center}
.tl-item .tl-axis{justify-self:center;position:relative;width:2px;height:100%;background:var(--line)}
.tl-item:last-child .tl-axis{display:none}
.tl-item .tl-axis::before{content:"";position:absolute;top:8px;left:-4px;width:10px;height:10px;border-radius:50%;background:var(--accent)}
.tl-item h3{font-size:17px;color:var(--ink);margin-bottom:4px}
.tl-item p{font-size:14.5px;color:var(--muted)}

/* ===== 联系页 ===== */
.contact-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:26px;align-items:start}
.form-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:26px}
.form-card label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin:0 0 6px}
.form-card input,.form-card textarea{width:100%;font-family:var(--sans);font-size:15px;padding:11px 13px;border:1px solid var(--line);border-radius:9px;margin-bottom:16px;background:#fff;color:var(--ink)}
.form-card textarea{min-height:120px;resize:vertical}
.contact-info .card{margin-bottom:14px}
.contact-info .card .row{display:flex;justify-content:space-between;gap:10px;font-size:14.5px;margin-top:4px}
.contact-info .card .row span{color:var(--muted)}
.contact-info .card .row b{font-family:var(--mono);color:var(--ink);font-size:13.5px;text-align:right;overflow-wrap:anywhere}

/* ===== 悬浮 WhatsApp ===== */
.wa-float{position:fixed;right:20px;bottom:20px;z-index:60;background:#25D366;color:#fff;display:flex;align-items:center;gap:8px;padding:12px 18px;border-radius:999px;font-weight:600;font-size:14px;box-shadow:0 4px 16px rgba(0,0,0,.22)}
.wa-float:hover{background:#1FBF5B;text-decoration:none}

/* ===== 响应式 ===== */
@media(max-width:920px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr 1fr}
  .hero h1{font-size:34px}
}
@media(max-width:600px){
  .grid-3,.grid-4{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr}
  .hero-inner{padding-block:44px 38px}
  .hero h1{font-size:26px}
  .hero .sub{font-size:15.5px}
  .hero-stats{margin-top:30px;gap:0 34px}
  .stat-num{font-size:20px}
  .stat-label{font-size:12.5px}
  .nav-links a{min-height:44px;display:flex;align-items:center;padding:0 9px;font-size:14px}
  .card .link{display:inline-block;padding:12px 0}
  .wa-float{right:14px;bottom:14px;padding:11px 15px;font-size:13.5px}
  .tl-item{grid-template-columns:48px 18px 1fr}
  .page-head h1{font-size:27px}
}