/* ===== 宝昭实业 BAOZHAO — 工业风 / 响应式 / 轻量 ===== */
:root{
  --steel:#14385e;        /* 主色 钢铁蓝 */
  --steel-900:#0a1c2e;    /* 深钢黑 */
  --steel-700:#0f2b47;
  --steel-600:#123a5c;
  --steel-500:#1d4c7a;
  --amber:#d4a23c;        /* 点缀 琥珀金 */
  --amber-500:#e8b84d;
  --ink:#1a232c;
  --muted:#5b6770;
  --line:#dbe2ea;
  --bg:#ffffff;
  --bg-soft:#eef1f4;      /* 工业冷灰 */
  --bg-steel:#0b2035;
  --radius:10px;
  --maxw:1180px;
  --shadow:0 8px 28px rgba(15,43,71,.10);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:"PingFang SC","Microsoft YaHei","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.7;font-size:16px;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--steel);text-decoration:none}
a:hover{color:var(--amber)}
img{max-width:100%;display:block}
.container{max-width:var(--maxw);margin:0 auto;padding:0 22px}
h1,h2,h3,h4{color:var(--steel-700);line-height:1.25;font-weight:700}
h1{font-size:clamp(28px,4vw,44px);margin:.2em 0 .4em}
h2{font-size:clamp(22px,3vw,32px);margin:0 0 .6em}
h3{font-size:20px;margin:1.2em 0 .5em}
p{margin:0 0 1em;color:var(--ink)}
.muted{color:var(--muted)}
.eyebrow{display:inline-block;color:var(--amber);font-weight:700;letter-spacing:.12em;
  text-transform:uppercase;font-size:13px;margin-bottom:.6em}

/* ===== Header ===== */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);
  backdrop-filter:saturate(160%) blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:12px;font-weight:800;color:var(--steel-700)}
.brand .logo{width:38px;height:38px;flex:0 0 auto}
.brand .zh{font-size:18px;letter-spacing:.04em}
.brand .en{font-size:11px;color:var(--muted);font-weight:600;letter-spacing:.18em}
.nav-links{display:flex;gap:26px;align-items:center;list-style:none;margin:0;padding:0}
.nav-links a{color:var(--ink);font-weight:600;font-size:15px;position:relative;padding:6px 0}
.nav-links a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;
  background:var(--amber);transition:width .2s}
.nav-links a:hover::after,.nav-links a.active::after{width:100%}
.nav-links a.active{color:var(--steel)}
.lang-switch{display:flex;gap:6px;align-items:center;font-size:13px;font-weight:700}
.lang-switch a{padding:5px 10px;border:1px solid var(--line);border-radius:20px;color:var(--muted)}
.lang-switch a.active{background:var(--steel);color:#fff;border-color:var(--steel)}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;font-size:24px;color:var(--steel)}

/* ===== Hero — 工业背景图 + 深色遮罩 ===== */
.hero{
  position:relative;
  background:url('/assets/img/hero-industrial.jpg') center center/cover no-repeat;
  color:#fff;overflow:hidden;
  min-height:72vh;display:flex;align-items:center}
.hero::before{content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(10,28,46,.96) 0%,rgba(10,28,46,.82) 42%,rgba(15,43,71,.45) 100%)}
.hero::after{content:"";position:absolute;left:0;bottom:0;width:100%;height:160px;
  background:linear-gradient(to top,rgba(10,28,46,.9),transparent)}
.hero .container{position:relative;z-index:2;padding:100px 22px 110px}
.hero .eyebrow{background:rgba(212,162,60,.14);border:1px solid rgba(212,162,60,.45);
  padding:5px 14px;border-radius:30px;color:var(--amber-500);font-size:12px}
.hero h1{color:#fff;font-size:clamp(34px,5.2vw,56px);max-width:760px;
  text-shadow:0 2px 14px rgba(0,0,0,.35);letter-spacing:-.02em}
.hero p.lead{font-size:20px;max-width:660px;color:#e2eef9;margin-bottom:1.6em;
  text-shadow:0 1px 10px rgba(0,0,0,.35)}
.hero .badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:10px}
.badge{background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.28);
  padding:7px 15px;border-radius:30px;font-size:13px;font-weight:600;color:#fff;
  backdrop-filter:blur(4px)}
.badge::before{content:"";display:inline-block;width:6px;height:6px;border-radius:50%;
  background:var(--amber);margin-right:7px;vertical-align:middle}
.btn{display:inline-block;padding:14px 28px;border-radius:8px;font-weight:700;font-size:15px;
  transition:transform .12s,box-shadow .12s}
.btn-primary{background:linear-gradient(135deg,var(--amber),var(--amber-500));color:#1a1300;
  box-shadow:0 8px 22px rgba(212,162,60,.35)}
.btn-primary:hover{color:#1a1300;transform:translateY(-2px);box-shadow:0 12px 28px rgba(212,162,60,.45)}
.btn-ghost{background:rgba(255,255,255,.08);color:#fff;border:1px solid rgba(255,255,255,.45);
  backdrop-filter:blur(4px)}
.btn-ghost:hover{color:#fff;background:rgba(255,255,255,.18);border-color:rgba(255,255,255,.65)}

/* ===== Sections ===== */
section{padding:64px 0}
.section-soft{background:var(--bg-soft)}
.section-steel{background:var(--bg-steel);color:#dce7f2}
.section-steel h2,.section-steel h3{color:#fff}
.section-steel p{color:#bcccdc}
.grid{display:grid;gap:22px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
@media(max-width:900px){.grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:620px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}}

/* ===== Cards ===== */
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;
  box-shadow:var(--shadow);transition:transform .15s,border-color .15s}
.card:hover{transform:translateY(-4px);border-color:var(--amber)}
.card .ic{width:46px;height:46px;background:var(--bg-soft);border-radius:10px;
  display:flex;align-items:center;justify-content:center;margin-bottom:14px;color:var(--steel)}
.card h3{margin-top:0;font-size:18px}
.card p{font-size:14.5px;color:var(--muted);margin-bottom:0}
.tag{display:inline-block;background:var(--bg-soft);color:var(--steel-500);font-size:12px;
  font-weight:700;padding:3px 10px;border-radius:20px;margin:3px 4px 0 0}

/* ===== Product list ===== */
.prod{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
@media(max-width:760px){.prod{grid-template-columns:1fr}}
.prod a{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 24px;box-shadow:var(--shadow);transition:border-color .15s,transform .15s}
.prod a:hover{border-color:var(--amber);transform:translateY(-3px)}
.prod h3{margin:0 0 6px;font-size:19px}
.prod p{margin:0;color:var(--muted);font-size:14.5px}

/* ===== Breadcrumb ===== */
.crumb{font-size:13px;color:var(--muted);padding:18px 0 0}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--steel)}

/* ===== Article / Knowledge ===== */
.article{max-width:840px;margin:0 auto}
.article .meta{font-size:13px;color:var(--muted);margin-bottom:18px}
.kb-type{display:inline-block;font-size:12px;font-weight:700;padding:3px 11px;border-radius:20px;
  background:var(--amber);color:#1a1300;margin-right:8px}
.kb-type.news{background:var(--steel);color:#fff}
.article h2{margin-top:1.4em}
.article ul,.article ol{color:var(--ink);padding-left:1.2em}
.article li{margin-bottom:.4em}
.callout{background:var(--bg-soft);border-left:4px solid var(--amber);padding:14px 18px;
  border-radius:0 8px 8px 0;margin:1.4em 0;font-size:15px}
.kb-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
@media(max-width:760px){.kb-grid{grid-template-columns:1fr}}
.kb-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow);display:flex;flex-direction:column}
.kb-card .body{padding:20px 22px;flex:1}
.kb-card h3{margin:6px 0 8px;font-size:18px}
.kb-card p{font-size:14px;color:var(--muted);margin:0 0 14px}
.kb-card .more{font-weight:700;font-size:14px}

/* ===== FAQ ===== */
.faq-item{border:1px solid var(--line);border-radius:var(--radius);margin-bottom:12px;
  background:#fff;overflow:hidden}
.faq-q{padding:16px 20px;font-weight:700;cursor:pointer;display:flex;justify-content:space-between;
  align-items:center;color:var(--steel-700)}
.faq-q .plus{color:var(--amber);font-size:22px;font-weight:700}
.faq-a{padding:0 20px 16px;color:var(--muted);display:none}
.faq-item.open .faq-a{display:block}
.faq-item.open .faq-q .plus{transform:rotate(45deg)}

/* ===== Stats ===== */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;text-align:center}
@media(max-width:760px){.stats{grid-template-columns:repeat(2,1fr)}}
.stat .num{font-size:34px;font-weight:800;color:var(--amber)}
.stat .lbl{font-size:14px;color:#bcccdc}

/* ===== Forms ===== */
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:620px){.form-row{grid-template-columns:1fr}}
.field{margin-bottom:16px}
.field label{display:block;font-weight:600;font-size:14px;margin-bottom:6px}
.field input,.field textarea,.field select{width:100%;padding:12px 14px;border:1px solid var(--line);
  border-radius:8px;font-size:15px;font-family:inherit;background:#fff;color:var(--ink)}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--steel)}
.note{font-size:13px;color:var(--muted)}

/* ===== Contact info ===== */
.info-list{list-style:none;padding:0;margin:0}
.info-list li{padding:14px 0;border-bottom:1px solid var(--line);display:flex;gap:14px}
.info-list .k{font-weight:700;color:var(--steel);min-width:84px}

/* ===== Footer ===== */
.site-footer{background:var(--bg-steel);color:#bcccdc;padding:54px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:30px}
@media(max-width:860px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.footer-grid{grid-template-columns:1fr}}
.site-footer h4{color:#fff;font-size:15px;margin:0 0 14px}
.site-footer a{color:#bcccdc;display:block;padding:5px 0;font-size:14px}
.site-footer a:hover{color:var(--amber)}
.footer-brand .zh{color:#fff;font-weight:800;font-size:18px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:36px;padding-top:18px;
  font-size:13px;color:#8fa3b8;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}

/* ===== CTA bar ===== */
.cta{background:var(--amber);color:#1a1300;text-align:center;padding:46px 22px}
.cta h2{color:#1a1300}
.cta .btn-dark{background:var(--steel-700);color:#fff;padding:13px 28px;border-radius:8px;font-weight:700;display:inline-block;margin-top:8px}
.cta .btn-dark:hover{color:#fff}

/* ===== Product detail (牌号页) ===== */
.pd-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:38px;align-items:center;padding-top:14px;padding-bottom:30px}
@media(max-width:880px){.pd-grid{grid-template-columns:1fr;gap:22px}}
.pd-img{background:var(--bg-soft);border-radius:var(--radius);overflow:hidden;border:1px solid var(--line)}
.pd-img img{width:100%;height:340px;object-fit:cover}
@media(max-width:880px){.pd-img img{height:240px}}
.pd-info h1{margin:.1em 0 .25em}
.pd-uns{display:inline-block;background:var(--bg-soft);color:var(--steel-500);font-weight:700;
  font-size:13px;padding:5px 12px;border-radius:20px;margin-bottom:14px}
.pd-info .btn-primary{margin-top:10px}
.pd-cols{display:grid;grid-template-columns:1.5fr 1fr;gap:34px;align-items:start}
@media(max-width:880px){.pd-cols{grid-template-columns:1fr}}
.spec-table{width:100%;border-collapse:collapse;margin:10px 0 6px;font-size:14.5px;background:#fff}
.spec-table th,.spec-table td{border:1px solid var(--line);padding:9px 12px;text-align:left}
.spec-table thead th{background:var(--steel);color:#fff;font-size:13.5px;font-weight:700}
.spec-table tbody tr:nth-child(even){background:var(--bg-soft)}
.spec-table td:first-child{font-weight:600;color:var(--steel-700)}
.pd-side{display:flex;flex-direction:column;gap:18px}
.side-block{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;box-shadow:var(--shadow)}
.side-block h3{margin:0 0 10px;font-size:16px}
.tick{list-style:none;padding:0;margin:0}
.tick li{position:relative;padding:5px 0 5px 22px;font-size:14px;color:var(--ink);border-bottom:1px dashed var(--line)}
.tick li:last-child{border-bottom:0}
.tick li::before{content:"";position:absolute;left:0;top:11px;width:9px;height:9px;border-radius:50%;
  background:var(--amber);box-shadow:0 0 0 3px rgba(212,162,60,.18)}
.pd-forms{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:14px}
@media(max-width:620px){.pd-forms{grid-template-columns:1fr}}
.pd-forms figure{margin:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.pd-forms img{width:100%;height:180px;object-fit:cover}
.pd-forms figcaption{padding:10px 12px;font-size:13px;color:var(--muted);font-weight:600}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:14px}
@media(max-width:760px){.rel-grid{grid-template-columns:1fr}}
.rel-card{display:flex;flex-direction:column;gap:4px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);padding:16px 18px;box-shadow:var(--shadow);transition:border-color .15s,transform .15s}
.rel-card:hover{border-color:var(--amber);transform:translateY(-3px)}
.rel-card .rel-cat{font-size:12px;color:var(--muted);font-weight:700}
.rel-card strong{color:var(--steel-700);font-size:16px}
.rel-card .rel-uns{font-size:12px;color:var(--steel-500)}
.btn-ghost-dark{display:inline-block;padding:11px 22px;border:1px solid var(--steel);border-radius:8px;
  font-weight:700;color:var(--steel)}
.btn-ghost-dark:hover{background:var(--steel);color:#fff}

/* ===== Grade hub cards ===== */
.grade-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media(max-width:900px){.grade-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.grade-grid{grid-template-columns:1fr}}
.grade-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:border-color .15s,transform .15s}
.grade-card:hover{border-color:var(--amber);transform:translateY(-4px)}
.gc-img{height:170px;overflow:hidden;background:var(--bg-soft)}
.gc-img img{width:100%;height:100%;object-fit:cover}
.gc-body{padding:16px 18px 18px;display:flex;flex-direction:column;flex:1}
.gc-cat{font-size:12px;font-weight:700;color:var(--muted);letter-spacing:.04em}
.gc-body h3{margin:4px 0 4px;font-size:18px}
.gc-uns{font-size:12px;color:var(--steel-500);font-weight:700;margin-bottom:8px}
.gc-body p{font-size:13.5px;color:var(--muted);margin:0 0 12px;flex:1}
.gc-more{font-weight:700;font-size:14px;color:var(--steel)}

/* ===== GEO direct-answer block ===== */
.geo-answer{background:linear-gradient(180deg,#f3f8fd,#eaf2fb);border:1px solid #cfe0f2;
  border-left:5px solid var(--steel);border-radius:10px;padding:20px 22px;margin:18px 0 26px}
.geo-answer-tag{display:inline-block;background:var(--steel);color:#fff;font-size:12px;
  font-weight:700;letter-spacing:.06em;text-transform:uppercase;padding:4px 10px;border-radius:4px;margin-bottom:10px}
.geo-answer p{margin:0;font-size:16px;line-height:1.75;color:#22303e}

/* ===== supply list (article footer) ===== */
.supply-list{list-style:none;padding:0;margin:14px 0 0}
.supply-list li{padding:11px 0 11px 26px;border-bottom:1px dashed var(--line);
  position:relative;font-size:15px;line-height:1.7;color:#2b3a48}
.supply-list li:last-child{border-bottom:none}
.supply-list li::before{content:"";position:absolute;left:6px;top:19px;width:8px;height:8px;
  background:var(--amber);border-radius:2px;transform:rotate(45deg)}

/* ===== table wrapper / caption ===== */
.table-wrap{overflow-x:auto;margin:20px 0 26px;-webkit-overflow-scrolling:touch}
.spec-table caption{caption-side:top;text-align:left;font-size:13.5px;color:var(--muted);
  padding:0 0 8px;font-weight:600}
.faq-list .faq-item{margin-bottom:8px}

/* ===== utilities ===== */
.center{text-align:center}
.mt-0{margin-top:0}
.lead-lg{font-size:18px;color:var(--muted);max-width:720px}
.section-head{text-align:center;max-width:720px;margin:0 auto 44px}
.section-head .eyebrow{position:relative;display:inline-block;padding-left:18px}
.section-head .eyebrow::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:10px;height:10px;background:var(--amber);clip-path:polygon(0 0,100% 50%,0 100%)}
.section-head h2{color:var(--steel-900)}
.section-head p{color:var(--muted);margin-top:10px}