/* ==========================================================================
   XTIOT · 查价机 / 自助查价终端
   cjj.chestnycode.com  全站样式（仅系统字体，无外部字体与图标库）
   ========================================================================== */

:root{
  --navy-900:#07182c;
  --navy-800:#0b2440;
  --navy-700:#123253;
  --blue-600:#12558c;
  --blue-500:#1777bd;
  --teal-500:#0f8f8a;
  --teal-050:#eaf6f5;
  --ink-900:#0d1b2a;
  --ink-700:#2b3d4f;
  --ink-500:#5b6c7d;
  --ink-300:#93a3b3;
  --line:#e0e7ee;
  --bg-soft:#f5f8fb;
  --white:#fff;
  --warn:#c9761f;
  --ok:#12a150;
  --shadow-sm:0 2px 8px rgba(10,30,54,.05);
  --shadow-md:0 10px 28px rgba(10,30,54,.09);
  --radius:14px;
  --radius-sm:10px;
  --maxw:1180px;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
  color:var(--ink-700);
  background:var(--white);
  font-size:16px;
  line-height:1.75;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--blue-600);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{color:var(--ink-900);line-height:1.35;margin:0}
p{margin:0 0 12px}
ul,ol{margin:0 0 12px;padding-left:22px}
li{margin:5px 0}
b,strong{color:var(--ink-900)}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}

.skip{position:absolute;left:-9999px;top:0;background:var(--navy-900);color:#fff;padding:10px 16px;z-index:99}
.skip:focus{left:8px;top:8px}

/* ---------------- 顶栏 ---------------- */
.topbar{background:var(--navy-900);color:#c9d6e4;font-size:13px}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:38px}
.topbar-left{display:flex;align-items:center;gap:8px;color:#a9bccf;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar .dot{width:6px;height:6px;border-radius:50%;background:var(--teal-500);flex:none}
.phones{display:flex;align-items:center;gap:10px;white-space:nowrap}
.phones .lbl{color:#eaf1f8;font-weight:600;font-size:13px}
.phones a{color:#ffb14d;font-weight:700;font-size:14px;letter-spacing:.2px}
.phones a:hover{text-decoration:none;color:#ffc978}
.phones .mail,.phones .mail b{color:#fff;font-weight:700;font-size:14px;letter-spacing:.01em;white-space:nowrap}
.main-nav a.lang{border:1px solid var(--line);border-radius:999px;padding:6px 12px;margin-left:6px;font-weight:600;color:var(--blue-600);background:#fff}
.main-nav a.lang:hover{background:var(--teal-050);border-color:var(--teal-500);color:var(--teal-500);text-decoration:none}

@media (max-width:1400px){.topbar-left{display:none}.topbar .wrap{justify-content:center}}

/* ---------------- 头部 ---------------- */
.site-header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.site-header .wrap{display:flex;align-items:center;gap:18px;min-height:76px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex:none}
.brand:hover{text-decoration:none}
.brand-logo{width:44px;height:40px;object-fit:contain}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text b{font-size:18px;color:var(--navy-900);letter-spacing:.3px}
.brand-text span{font-size:11px;color:var(--ink-500);letter-spacing:.6px}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto;flex-wrap:wrap}
.main-nav a{color:var(--ink-700);font-size:15px;padding:8px 11px;border-radius:8px;font-weight:500}
.main-nav a:hover{background:var(--bg-soft);color:var(--blue-600);text-decoration:none}
.main-nav a.nav-cta{background:var(--blue-600);color:#fff;font-weight:600;margin-left:8px}
.main-nav a.nav-cta:hover{background:var(--navy-700);color:#fff}
.nav-toggle{display:none;margin-left:auto;background:none;border:0;padding:10px;cursor:pointer}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--navy-900);margin:4px 0;transition:.2s}

/* ---------------- 面包屑 ---------------- */
.crumbs{background:var(--bg-soft);border-bottom:1px solid var(--line);font-size:13px;color:var(--ink-500)}
.crumbs .wrap{display:flex;align-items:center;gap:8px;min-height:38px;flex-wrap:wrap}
.crumbs a{color:var(--ink-500)}
.crumbs .cur{color:var(--ink-900);font-weight:600}
.crumbs .sep{color:var(--ink-300)}

/* ---------------- 首屏 ---------------- */
.page-hero{padding:44px 0 36px;background:linear-gradient(180deg,#f7fafd 0%,#fff 100%);border-bottom:1px solid var(--line)}
.page-hero .kicker{display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:1px;color:var(--teal-500);background:var(--teal-050);padding:4px 10px;border-radius:999px;margin-bottom:12px}
.page-hero h1{font-size:31px;letter-spacing:-.2px;margin-bottom:14px;max-width:900px}
.answer{font-size:16.5px;color:var(--ink-700);max-width:860px;margin:0 0 20px}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin:18px 0 6px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 20px;border-radius:10px;font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;text-decoration:none;transition:.15s}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-primary{background:var(--blue-600);color:#fff;box-shadow:var(--shadow-sm)}
.btn-primary:hover{background:var(--navy-700)}
.btn-ghost{background:#fff;color:var(--navy-800);border-color:#c9d6e2}
.btn-ghost:hover{border-color:var(--blue-500);color:var(--blue-600)}
.btn-lg{padding:13px 24px;font-size:16px}
.hero-points{list-style:none;padding:0;margin:20px 0 0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px 24px;max-width:900px}
.hero-points li{position:relative;padding-left:22px;font-size:14.5px;color:var(--ink-700)}
.hero-points li::before{content:"";position:absolute;left:0;top:.62em;width:8px;height:8px;border-radius:2px;background:var(--teal-500)}

/* ---------------- 通用区块 ---------------- */
.section{padding:52px 0}
.section.soft{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:820px;margin-bottom:24px}
.section-head .kicker{display:block;font-size:12.5px;font-weight:700;letter-spacing:1px;color:var(--teal-500);margin-bottom:6px}
.section-head h2{font-size:24px;margin-bottom:8px}
.section-head p{color:var(--ink-500);font-size:15px;margin:0}
.section h2{font-size:24px;margin-bottom:6px}

.grid{display:grid;gap:18px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}

.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow-sm)}
.card h3{font-size:17px;margin-bottom:8px}
.card p{font-size:14.5px;color:var(--ink-700);margin:0}
.card .tagline{display:inline-block;font-size:12px;font-weight:700;color:var(--teal-500);margin-bottom:6px;letter-spacing:.5px}

/* ---------------- 表格 ---------------- */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{padding:11px 14px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}
thead th{background:#eef4f9;color:var(--navy-800);font-weight:700;white-space:nowrap;border-bottom:1px solid #d6e2ec}
tbody tr:last-child td{border-bottom:0}
tbody tr:nth-child(even){background:#fbfdff}
td.n{white-space:nowrap;font-variant-numeric:tabular-nums}
table a{font-weight:600}

/* ---------------- 图表 ---------------- */
.figure{margin:0}
.figure-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:12px;display:flex;align-items:center;justify-content:center;min-height:180px}
.figure-box img{object-fit:contain;max-height:420px;width:auto;margin:0 auto}
figure figcaption{font-size:13px;color:var(--ink-500);margin-top:8px;line-height:1.6}
.fig-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.fig-row-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}

/* ---------------- 型号卡 ---------------- */
.model-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.model-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.18s;box-shadow:var(--shadow-sm)}
.model-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#c3d7e6}
.model-card .thumb{background:#f8fbfd;border-bottom:1px solid var(--line);padding:14px;display:flex;align-items:center;justify-content:center;height:210px}
.model-card .thumb img{max-height:182px;width:auto;object-fit:contain}
.model-card .body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:6px;flex:1}
.model-card h3{font-size:18px;letter-spacing:.2px}
.model-card .tag{font-size:12.5px;color:var(--teal-500);font-weight:700}
.model-card p{font-size:13.5px;color:var(--ink-500);margin:0;flex:1}
.model-card .more{font-size:13.5px;font-weight:700;color:var(--blue-600);margin-top:6px}

/* ---------------- 规格表 / 参数 ---------------- */
.spec-table th{width:32%;background:#f7fafc;font-weight:600;color:var(--ink-900);white-space:normal}
.spec-table td{color:var(--ink-700)}

/* ---------------- 步骤 ---------------- */
.steps{counter-reset:s;list-style:none;padding:0;margin:0;display:grid;gap:12px}
.steps li{counter-increment:s;position:relative;padding:14px 18px 14px 56px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);font-size:14.5px}
.steps li::before{content:counter(s);position:absolute;left:16px;top:14px;width:26px;height:26px;border-radius:50%;background:var(--teal-050);color:var(--teal-500);font-weight:700;font-size:13px;display:flex;align-items:center;justify-content:center}

/* ---------------- FAQ ---------------- */
.faq{border:1px solid var(--line);border-radius:var(--radius);background:#fff;overflow:hidden}
.faq + .faq{margin-top:10px}
.faq summary{cursor:pointer;padding:16px 20px;font-weight:600;color:var(--ink-900);font-size:15.5px;list-style:none;position:relative;padding-right:44px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);font-size:20px;color:var(--teal-500);font-weight:400}
.faq[open] summary::after{content:"−"}
.faq .a{padding:0 20px 18px;font-size:14.5px;color:var(--ink-700)}
.faq .a p:last-child{margin-bottom:0}

/* ---------------- 提示块 ---------------- */
.note{background:#fdf8ef;border-left:3px solid var(--warn);border-radius:0 10px 10px 0;padding:12px 16px;font-size:14px;color:#6a4a1e;margin:16px 0}
.note.ok{background:var(--teal-050);border-left-color:var(--teal-500);color:#0d5f5b}
.note b{color:inherit}

/* ---------------- CTA 条 ---------------- */
.cta-band{background:var(--navy-900);color:#dbe6f1;padding:40px 0}
.cta-band .wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.cta-band h2{color:#fff;font-size:22px;margin-bottom:6px}
.cta-band p{margin:0;color:#b9cadb;font-size:14.5px}
.cta-band .btn-primary{background:var(--teal-500)}
.cta-band .btn-primary:hover{background:#0b7370}
.cta-band .btn-ghost{background:transparent;color:#fff;border-color:#3c5573}
.cta-band .btn-ghost:hover{background:#122d4d;color:#fff}

/* ---------------- 页脚 ---------------- */
.site-footer{background:#06121f;color:#93a8bd;font-size:13.5px;padding:44px 0 22px}
.site-footer .cols{display:grid;grid-template-columns:1.35fr 1fr 1fr 1fr 1.15fr;gap:26px;margin-bottom:26px}
.site-footer h4{color:#fff;font-size:14px;margin-bottom:10px;letter-spacing:.4px}
.site-footer a{color:#a8bcd0}
.site-footer a:hover{color:#fff;text-decoration:none}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{margin:6px 0}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.footer-brand img{width:40px;height:36px;object-fit:contain;background:#fff;border-radius:6px;padding:2px}
.footer-brand b{color:#fff;font-size:16px}
.site-footer .muted{color:#6f869c;font-size:12.5px;line-height:1.7}
.footer-contact li{display:flex;gap:8px;font-size:13px}
.footer-contact .k{color:#7e94a9;flex:none}
.footer-contact b{color:#e6eef6}
.icp{border-top:1px solid #17293c;padding-top:16px;display:flex;gap:18px;flex-wrap:wrap;align-items:center;font-size:12.5px;color:#71889e}
.icp a{color:#8fa6bb}

/* ---------------- 响应式 ---------------- */
@media (max-width:1080px){
  .model-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .site-footer .cols{grid-template-columns:1fr 1fr}
}
@media (max-width:860px){
  .grid-2,.grid-3,.fig-row,.fig-row-3{grid-template-columns:1fr}
  .hero-points{grid-template-columns:1fr}
  .page-hero h1{font-size:25px}
  .section{padding:38px 0}
  .nav-toggle{display:block}
  .main-nav{display:none;position:absolute;top:76px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;padding:10px 16px 16px;gap:2px;box-shadow:var(--shadow-md)}
  .main-nav.open{display:flex}
  .main-nav a{padding:11px 12px;font-size:15px}
  .main-nav a.nav-cta{margin-left:0;text-align:center;margin-top:6px}
  .site-header .wrap{position:relative;min-height:64px}
  .brand-text b{font-size:16px}
  .topbar-left{display:none}
  .topbar .wrap{justify-content:center}
  .phones{gap:8px;flex-wrap:wrap;justify-content:center;padding:4px 0}
  .phones a{font-size:13px}
  .phones .mail{font-size:12px}
}
@media (max-width:620px){
  .model-grid{grid-template-columns:1fr}
  .site-footer .cols{grid-template-columns:1fr}
  .cta-band .wrap{flex-direction:column;align-items:flex-start}
  th,td{padding:9px 10px;font-size:13px}
}

/* 证书区：统一框高，避免长宽比差异把网格拉歪 */
.cert-grid .figure-box{height:300px;padding:8px}
.cert-grid .figure-box img{max-height:282px;width:auto}
.cert-grid figcaption{font-size:12.5px}
@media (max-width:620px){.cert-grid .figure-box{height:220px}.cert-grid .figure-box img{max-height:202px}}