/* ==========================================================================
   东莞市翰柯科技有限公司 官网样式表
   品牌色取自 Logo 主色：主 #1C2952 / 渐变蓝 #1868B8 / 中文灰 #727171
   （Logo 像素采样结果：#1C2952 占比最高，#727171 为辅助灰）
   响应式断点：1024px 平板 / 768px 手机 / 480px 小屏
   ========================================================================== */
:root{
  --brand:#1C2952; --brand-2:#2D63B8; --brand-3:#1868B8;
  --gray:#727171; --ink:#1a2233; --muted:#5c6675;
  --bg:#fff; --bg-soft:#f5f7fb; --line:#e3e8f0;
  --radius:12px; --shadow:0 6px 24px rgba(28,41,82,.08);
  --max:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.75;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand-2);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{line-height:1.35;margin:0 0 .6em;color:var(--brand)}
p{margin:0 0 1em}
ul,ol{margin:0 0 1em;padding-left:1.3em}
:focus-visible{outline:3px solid var(--brand-2);outline-offset:3px}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ---------- 页眉与导航 ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.97);
  border-bottom:1px solid var(--line);backdrop-filter:blur(8px)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:76px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none}
.brand img{width:190px;height:auto}                 /* 建议 Logo 源文件 380×100 或同比例 PNG */
.brand:hover{text-decoration:none}
.nav-toggle{display:none;background:none;border:1px solid var(--line);border-radius:8px;
  width:44px;height:40px;cursor:pointer;padding:8px}
.nav-toggle span{display:block;height:2px;background:var(--brand);margin:5px 0;transition:.25s}
.site-nav ul{display:flex;gap:6px;list-style:none;margin:0;padding:0}
.site-nav a{display:block;padding:10px 14px;color:var(--ink);font-weight:500;border-radius:8px;white-space:nowrap}
.site-nav a:hover,.site-nav a[aria-current="page"]{background:var(--bg-soft);color:var(--brand);text-decoration:none}
.nav-cta{padding:10px 18px!important;background:var(--brand);color:#fff!important}
.nav-cta:hover{background:var(--brand-2)!important}

/* ---------- 通用组件 ---------- */
.btn{display:inline-block;padding:12px 26px;border-radius:8px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:.2s;text-align:center}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-2);color:#fff}
.btn-ghost{border-color:var(--brand);color:var(--brand);background:transparent}
.btn-ghost:hover{background:var(--brand);color:#fff}
.btn-sm{padding:9px 18px;font-size:14px}
.section{padding:72px 0}
.section-soft{background:var(--bg-soft)}
.section-head{text-align:center;max-width:760px;margin:0 auto 44px}
.section-head h2{font-size:32px;margin-bottom:12px}
.section-head p{color:var(--muted);margin:0}
.eyebrow{display:inline-block;color:var(--brand-2);font-weight:700;letter-spacing:.12em;
  font-size:13px;text-transform:uppercase;margin-bottom:10px}
.grid{display:grid;gap:24px}
.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:26px;box-shadow:var(--shadow)}
.card h3{font-size:19px;margin-bottom:10px}
.card p:last-child{margin-bottom:0}
.tag{display:inline-block;font-size:12px;font-weight:600;color:var(--brand-2);
  background:#eef3fc;border-radius:20px;padding:3px 12px;margin-bottom:12px}
.muted{color:var(--muted)}
.price{font-weight:700;color:var(--brand)}
.note{font-size:13px;color:var(--muted)}

/* ---------- 首页 Hero ---------- */
.hero{background:linear-gradient(120deg,#f7f9fd 0%,#eaf1fb 100%);
  border-bottom:1px solid var(--line);padding:88px 0 92px;overflow:hidden}
.hero-inner{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
.hero h1{font-size:44px;letter-spacing:-.5px;margin-bottom:18px}
.hero .lead{font-size:18px;color:var(--muted);max-width:560px}
.hero .btn-row{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px}
.hero-badges{display:flex;gap:18px;flex-wrap:wrap;margin-top:34px;font-size:14px;color:var(--muted)}
.hero-badges span::before{content:"";display:inline-block;width:8px;height:8px;border-radius:50%;
  background:var(--brand-3);margin-right:8px;vertical-align:middle}
/* Hero 视觉：1200×800 产品组合图（取自品牌产品目录，见 README.md） */
.hero-art{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px;box-shadow:var(--shadow)}
.hero-art img{width:100%;height:auto;border-radius:10px;display:block}

/* ---------- 目录入口 ---------- */
.entry{display:block;position:relative;overflow:hidden;border-radius:var(--radius);
  border:1px solid var(--line);background:#fff;padding:34px;box-shadow:var(--shadow);color:inherit}
.entry:hover{text-decoration:none;border-color:var(--brand-2);transform:translateY(-3px);transition:.2s}
.entry h3{font-size:24px}
.entry .arrow{display:inline-block;margin-top:14px;color:var(--brand-2);font-weight:700}

/* ---------- 优势 / 场景 ---------- */
.feature-num{font-size:13px;font-weight:800;color:var(--brand-3);letter-spacing:.1em}
.scene-list{display:flex;flex-wrap:wrap;gap:12px;list-style:none;padding:0;margin:0}
.scene-list li{background:#fff;border:1px solid var(--line);border-radius:30px;padding:9px 20px;font-size:14px}

/* ---------- 资质 / 代理说明 ---------- */
.qual-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.callout{background:#fff;border-left:4px solid var(--brand-3);border-radius:var(--radius);
  padding:24px 28px;box-shadow:var(--shadow)}
.callout h3{font-size:18px}
.cta-band{background:var(--brand);color:#fff;padding:64px 0;text-align:center}
.cta-band h2{color:#fff;font-size:30px}
.cta-band p{color:#d8e2f5;max-width:640px;margin:0 auto 24px}
.cta-band .btn-primary{background:#fff;color:var(--brand)}
.cta-band .btn-primary:hover{background:#eaf1fb}
.cta-band .btn-ghost{border-color:#fff;color:#fff}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.15)}

/* ---------- 内页页头 ---------- */
.page-head{background:var(--bg-soft);border-bottom:1px solid var(--line);padding:48px 0}
.page-head h1{font-size:34px;margin-bottom:8px}
.breadcrumb{font-size:13px;color:var(--muted);margin-bottom:10px}
.breadcrumb a{color:var(--muted)}

/* ---------- 产品卡片 ---------- */
.product-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
.product{background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column}
.product figure{margin:0;background:var(--bg-soft);border-bottom:1px solid var(--line)}
.product figure img{width:100%;aspect-ratio:4/3;object-fit:contain}
.product-body{padding:24px;display:flex;flex-direction:column;flex:1}
.product h2{font-size:21px;margin:0 0 4px}
.product .model{font-size:13px;color:var(--brand-2);font-weight:700;letter-spacing:.04em;margin-bottom:12px}
.product .sell{font-size:15px;font-weight:600;color:var(--ink);margin-bottom:14px}
.product .block{margin-bottom:14px}
.product .block h3{font-size:14px;margin:0 0 6px;color:var(--brand-2);letter-spacing:.03em}
.product .block ul,.product .block p{margin:0;font-size:14px;color:var(--muted)}
.product .block ul{padding-left:1.15em}
.product .block li{margin-bottom:3px}
.product .kv{display:grid;grid-template-columns:auto 1fr;gap:4px 12px;font-size:14px}
.product .kv dt{color:var(--brand);font-weight:600;white-space:nowrap}
.product .kv dd{margin:0;color:var(--muted)}
.product .foot{margin-top:auto;padding-top:18px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.product .foot .price{font-size:15px}
.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{border:1px solid var(--line);padding:10px 14px;text-align:left;vertical-align:top}
th{background:var(--bg-soft);color:var(--brand);white-space:nowrap}
.series-list{columns:2;column-gap:36px;font-size:14px;color:var(--muted);padding-left:1.2em}

/* ---------- 表单 ---------- */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:18px}
.field label{font-weight:600;font-size:14px}
.field .req{color:#c0392b}
.field input,.field textarea,.field select{width:100%;padding:12px 14px;border:1px solid var(--line);
  border-radius:8px;font:inherit;font-size:15px;background:#fff;color:var(--ink)}
.field textarea{min-height:140px;resize:vertical}
.field input:invalid:not(:placeholder-shown),.field textarea:invalid:not(:placeholder-shown){border-color:#c0392b}
.field .err{color:#c0392b;font-size:13px;min-height:18px}
.checkbox{display:flex;align-items:flex-start;gap:10px;font-size:14px;margin-bottom:18px}
.checkbox input{width:18px;height:18px;flex:none;margin-top:3px}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.contact-item{display:flex;gap:16px;padding:18px 0;border-bottom:1px solid var(--line)}
.contact-item .ico{width:42px;height:42px;flex:none;border-radius:10px;background:#eef3fc;
  display:grid;place-items:center;color:var(--brand);font-weight:800}
/* 地图 / 二维码占位：建议 800×450 地图截图、240×240 微信二维码（见 README.md） */
.map-placeholder,.qr-placeholder{background:var(--bg-soft);border:1px dashed var(--line);
  border-radius:var(--radius);display:grid;place-items:center;text-align:center;color:var(--muted);padding:24px}
.map-placeholder{min-height:260px}
.qr-placeholder{width:200px;min-height:180px;margin:0 auto;font-size:13px}
.form-status{margin-top:14px;font-size:14px;font-weight:600}
.form-status.ok{color:#1e7a45}
.form-status.err{color:#c0392b}

/* ---------- 页脚 ---------- */
.site-footer{background:#141f3d;color:#c9d3e6;padding:56px 0 24px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;margin-bottom:36px}
.site-footer h3{color:#fff;font-size:16px;margin-bottom:14px}
.site-footer a{color:#c9d3e6}
.site-footer a:hover{color:#fff}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{margin-bottom:8px}
.footer-logo{width:200px;margin-bottom:16px;filter:brightness(0) invert(1);opacity:.95} /* 深色页脚反白显示主 Logo */
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding-top:20px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;color:#9aa9c4;font-size:13px}

/* ---------- 隐私政策正文 ---------- */
.prose{max-width:860px}
.prose h2{font-size:22px;margin-top:38px}
.prose h3{font-size:17px;margin-top:24px}
.prose p,.prose li{color:var(--muted)}
.disclaimer{background:#fff7e8;border:1px solid #f0dcae;border-radius:var(--radius);
  padding:16px 20px;color:#7a5716;margin-bottom:28px}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:36px}
  .hero h1{font-size:36px}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .nav-toggle{display:block}
  .site-nav{display:none;position:absolute;top:76px;left:0;right:0;background:#fff;
    border-bottom:1px solid var(--line);box-shadow:var(--shadow);padding:12px 24px 20px}
  .site-nav.is-open{display:block}
  .site-nav ul{display:block}
  .site-nav li{margin:2px 0}
  .site-nav a{padding:12px 14px}
  .nav-cta{text-align:center;margin-top:8px}
  .section{padding:52px 0}
  .section-head h2{font-size:26px}
  .hero{padding:56px 0 64px}
  .hero h1{font-size:30px}
  .hero .lead{font-size:16px}
  .grid-2,.grid-3,.grid-4,.product-grid,.qual-grid,.contact-grid,.form-grid,.footer-grid{grid-template-columns:1fr}
  .series-list{columns:1}
  .footer-bottom{flex-direction:column}
}
@media (max-width:480px){
  .container{padding:0 16px}
  .hero h1{font-size:26px}
  .section-head h2{font-size:23px}
  .btn{padding:11px 20px}
  .product-body{padding:18px}
  .product .foot{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{transition:none!important;animation:none!important}
}
@media print{.site-header,.site-footer,.nav-toggle,.cta-band,.btn{display:none}}