/*
Theme Name: HFY B2B
Theme URI: https://hfykjtech.cn/
Author: HFY Technology
Author URI: https://hfykjtech.cn/
Description: Lightweight B2B theme for HFY Technology — environmental sensors, water quality instruments, IoT gateways and ThingsBoard services. Built for speed and SEO, no page builder required.
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.7
Requires PHP: 7.4
License: GNU General Public License v2 or later
Text Domain: hfy
*/

:root{
  --navy:#0b2a4a; --navy-2:#0f3760; --navy-deep:#081d35;
  --blue:#1565d8; --blue-d:#0f4fb0; --blue-l:#eaf2fd;
  --teal:#0e9f8a;
  --bg:#ffffff; --bg-2:#f4f8fc; --line:#e2e9f2;
  --text:#1d2b3a; --muted:#5b6b7f;
  --radius:14px;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --shadow:0 2px 10px rgba(13,42,74,.07);
  --shadow-lg:0 12px 34px rgba(13,42,74,.13);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--sans);color:var(--text);background:var(--bg);line-height:1.7;font-size:16px}
a{color:var(--blue);text-decoration:none}
a:hover{color:var(--blue-d);text-decoration:underline}
img{max-width:100%;display:block}
ul{list-style:none}
h1,h2,h3,h4{line-height:1.25;color:var(--navy);font-weight:700}
h1{font-size:2.4rem;letter-spacing:-.5px}
h2{font-size:1.9rem;letter-spacing:-.3px}
h3{font-size:1.25rem}
p+p{margin-top:.9em}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}
.sec{padding:72px 0}
.sec-alt{background:var(--bg-2)}
.sec-head{max-width:760px;margin:0 auto 44px;text-align:center}
.sec-head p{color:var(--muted);margin-top:12px}
.kicker{display:inline-block;font-size:.78rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--blue);background:var(--blue-l);border-radius:999px;padding:5px 14px;margin-bottom:14px}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:600;border-radius:10px;padding:13px 26px;font-size:.95rem;transition:.18s;border:2px solid transparent;cursor:pointer;text-decoration:none}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:var(--blue-d);color:#fff}
.btn-ghost{border-color:var(--navy);color:var(--navy)}
.btn-ghost:hover{background:var(--navy);color:#fff}
.btn-white{background:#fff;color:var(--navy)}
.btn-white:hover{background:#e8f0fb;color:var(--navy)}

/* Top bar + header */
.topbar{background:var(--navy-deep);color:#9db4d3;font-size:.82rem}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;height:36px}
.topbar a{color:#cfe0f5}
.topbar a:hover{color:#fff}
.topbar .tb-links{display:flex;gap:18px}
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 1px 0 rgba(13,42,74,.03)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:70px;gap:24px}
.brand{display:flex;align-items:center;gap:11px;color:var(--navy)}
.brand:hover{text-decoration:none}
.brand .logo{width:40px;height:40px;flex:0 0 40px;border-radius:10px;background:linear-gradient(135deg,var(--navy) 0%,var(--blue) 100%);display:grid;place-items:center;color:#fff;font-weight:800;font-size:.95rem}
.brand .bn{font-size:1.22rem;font-weight:800;letter-spacing:-.4px;line-height:1.1}
.brand .bs{display:block;font-size:.68rem;color:var(--muted);font-weight:500;letter-spacing:.08em;text-transform:uppercase}
.main-nav ul{display:flex;gap:26px}
.main-nav a{color:var(--text);font-weight:600;font-size:.93rem;padding:6px 2px}
.main-nav a:hover,.main-nav .current-menu-item>a{color:var(--blue);text-decoration:none}
.nav-cta{display:flex;align-items:center;gap:14px}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle svg{width:26px;height:26px;stroke:var(--navy)}

/* Hero */
.hero{background:linear-gradient(160deg,var(--navy-deep) 0%,var(--navy) 55%,var(--navy-2) 100%);color:#fff;overflow:hidden}
.hero .wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;padding:84px 24px}
.hero h1{color:#fff;font-size:2.9rem}
.hero h1 em{font-style:normal;color:#7db4ff}
.hero .lead{color:#b9cce4;font-size:1.13rem;margin:20px 0 30px;max-width:34em}
.hero .hero-ctas{display:flex;gap:14px;flex-wrap:wrap}
.hero .hero-trust{display:flex;gap:26px;margin-top:38px;flex-wrap:wrap}
.hero .hero-trust div{font-size:.86rem;color:#9db4d3}
.hero .hero-trust b{display:block;font-size:1.35rem;color:#fff}
.hero-art svg{width:100%;height:auto;filter:drop-shadow(0 18px 40px rgba(0,0,0,.35))}

/* Cards: categories */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.cat-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px 24px;transition:.2s;display:block;color:var(--text)}
.cat-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px);text-decoration:none;border-color:#c6d9f2}
.cat-card .ico{width:52px;height:52px;border-radius:12px;background:var(--blue-l);display:grid;place-items:center;margin-bottom:16px}
.cat-card .ico svg{width:28px;height:28px;stroke:var(--blue);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.cat-card h3{margin-bottom:8px}
.cat-card p{font-size:.9rem;color:var(--muted)}
.cat-card .more{display:inline-block;margin-top:14px;font-size:.86rem;font-weight:700;color:var(--blue)}

/* Product cards */
.prod-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.2s;display:flex;flex-direction:column}
.prod-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px)}
.prod-thumb{aspect-ratio:16/10;background:linear-gradient(150deg,#eef4fb,#dce9f8);display:grid;place-items:center;position:relative}
.prod-thumb svg{width:46%;height:auto}
.prod-thumb .badge{position:absolute;top:12px;left:12px;background:var(--navy);color:#fff;font-size:.68rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;border-radius:6px;padding:4px 10px}
.prod-body{padding:20px 20px 22px;display:flex;flex-direction:column;flex:1}
.prod-body .model{font-family:var(--mono);font-size:.76rem;color:var(--blue);font-weight:700;letter-spacing:.04em}
.prod-body h3{font-size:1.05rem;margin:6px 0 8px}
.prod-body .desc{font-size:.88rem;color:var(--muted);flex:1}
.prod-body .meta{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}
.tag{font-size:.72rem;background:var(--bg-2);border:1px solid var(--line);color:var(--muted);border-radius:6px;padding:2px 9px;font-weight:600}

/* Feature list */
.feat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.feat .fi{width:44px;height:44px;border-radius:10px;background:var(--blue-l);display:grid;place-items:center;margin-bottom:14px}
.feat .fi svg{width:24px;height:24px;stroke:var(--blue);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.feat h3{font-size:1.05rem;margin-bottom:8px}
.feat p{font-size:.9rem;color:var(--muted)}

/* Software band */
.soft-band{background:linear-gradient(150deg,var(--navy) 0%,var(--navy-2) 100%);color:#fff}
.soft-band h2{color:#fff}
.soft-band .sec-head p{color:#b9cce4}
.soft-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.soft-item{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:var(--radius);padding:24px}
.soft-item h3{color:#fff;font-size:1.02rem;margin-bottom:8px}
.soft-item p{font-size:.88rem;color:#b9cce4}
.soft-item ul{margin-top:10px}
.soft-item li{font-size:.85rem;color:#cddcf1;padding:3px 0 3px 20px;position:relative}
.soft-item li::before{content:"✓";position:absolute;left:0;color:#6fe3c8;font-weight:700}

/* CTA strip */
.cta-strip{background:var(--blue);color:#fff;text-align:center}
.cta-strip h2{color:#fff}
.cta-strip p{color:#d8e7fb;margin:12px 0 26px}

/* Page hero (inner pages) */
.page-hero{background:linear-gradient(160deg,var(--navy-deep),var(--navy));color:#fff;padding:56px 0}
.page-hero h1{color:#fff}
.page-hero .crumbs{font-size:.82rem;color:#8fa9c9;margin-bottom:12px}
.page-hero .crumbs a{color:#b9cce4}
.page-hero p{color:#b9cce4;max-width:44em;margin-top:12px}

/* Content/prose */
.prose{max-width:820px}
.prose h2{margin:1.6em 0 .5em;font-size:1.5rem}
.prose h3{margin:1.4em 0 .4em}
.prose ul{list-style:disc;padding-left:1.3em}
.prose li{margin:.3em 0}
.prose table{width:100%;border-collapse:collapse;margin:1.2em 0;font-size:.92rem}
.prose th,.prose td{border:1px solid var(--line);padding:9px 13px;text-align:left}
.prose th{background:var(--bg-2);color:var(--navy)}
.prose img{border-radius:10px;margin:1em 0}

/* Specs table (product) */
.spec-table{width:100%;border-collapse:collapse;font-size:.93rem;margin:6px 0 8px}
.spec-table th,.spec-table td{border-bottom:1px solid var(--line);padding:11px 14px;text-align:left;vertical-align:top}
.spec-table th{width:230px;background:var(--bg-2);color:var(--navy);font-weight:700}

/* RFQ / contact form */
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:34px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.fg{display:flex;flex-direction:column;gap:6px}
.fg.full{grid-column:1/-1}
.fg label{font-size:.85rem;font-weight:700;color:var(--navy)}
.fg input,.fg select,.fg textarea{font:inherit;font-size:.95rem;border:1.5px solid var(--line);border-radius:9px;padding:11px 13px;background:#fbfdff;color:var(--text)}
.fg input:focus,.fg select:focus,.fg textarea:focus{outline:none;border-color:var(--blue);background:#fff}
.fg textarea{min-height:130px;resize:vertical}
.form-note{font-size:.8rem;color:var(--muted);margin-top:10px}
.msg-ok,.msg-err{border-radius:10px;padding:14px 18px;margin-bottom:18px;font-size:.92rem;font-weight:600}
.msg-ok{background:#e7f8f1;color:#0a7d5c;border:1px solid #bce9d8}
.msg-err{background:#fdecec;color:#b42318;border:1px solid #f5c6c6}

/* Contact info blocks */
.info-card{display:flex;gap:14px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.info-card .ii{width:42px;height:42px;flex:0 0 42px;border-radius:10px;background:var(--blue-l);display:grid;place-items:center}
.info-card .ii svg{width:22px;height:22px;stroke:var(--blue);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.info-card h3{font-size:.95rem;margin-bottom:3px}
.info-card p{font-size:.9rem;color:var(--muted)}

/* Product page layout */
.single-product-wrap{display:grid;grid-template-columns:1fr 340px;gap:36px;align-items:start}
.pv-card{position:sticky;top:96px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:26px}
.pv-card .price-hint{font-size:1.05rem;font-weight:800;color:var(--navy)}
.pv-card ul{margin:16px 0}
.pv-card li{font-size:.88rem;color:var(--muted);padding:4px 0 4px 22px;position:relative}
.pv-card li::before{content:"✓";position:absolute;left:0;color:var(--teal);font-weight:800}

/* Footer */
.site-footer{background:var(--navy-deep);color:#8fa3c2;font-size:.88rem;margin-top:0}
.site-footer .f-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;padding:56px 0 40px}
.site-footer h4{color:#fff;font-size:.95rem;margin-bottom:14px}
.site-footer a{color:#8fa3c2}
.site-footer a:hover{color:#fff}
.site-footer li{padding:3px 0}
.site-footer .f-about p{margin-top:12px;line-height:1.65}
.f-bottom{border-top:1px solid rgba(255,255,255,.09);padding:18px 0;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:.8rem}
.f-bottom .wrap{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;width:100%}

/* 404 / misc */
.center-404{text-align:center;padding:110px 24px}
.center-404 h1{font-size:5rem;color:var(--blue)}
.wp-block-image{margin:1em 0}
.aligncenter{margin-left:auto;margin-right:auto}
.screen-reader-text{clip:rect(1px,1px,1px,1px);position:absolute!important;overflow:hidden;width:1px;height:1px;word-wrap:normal!important}
.post-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.post-item h3{margin-bottom:8px}
.post-item time{font-size:.78rem;color:var(--muted);text-transform:uppercase;letter-spacing:.06em;font-weight:700}
.post-item p{color:var(--muted);font-size:.92rem;margin-top:8px}

/* Responsive */
@media(max-width:1020px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .soft-grid{grid-template-columns:1fr 1fr}
  .hero .wrap{grid-template-columns:1fr;padding:60px 24px}
  .hero-art{max-width:480px;margin:0 auto}
  .single-product-wrap{grid-template-columns:1fr}
  .pv-card{position:static}
  .site-footer .f-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:760px){
  .grid-3,.grid-2,.soft-grid,.form-grid{grid-template-columns:1fr}
  h1{font-size:2rem}.hero h1{font-size:2.1rem}h2{font-size:1.55rem}
  .topbar .tb-links{display:none}
  .main-nav{display:none;position:absolute;top:70px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow-lg);padding:10px 24px 20px}
  .main-nav.open{display:block}
  .main-nav ul{flex-direction:column;gap:4px}
  .main-nav a{display:block;padding:11px 0;border-bottom:1px solid var(--bg-2)}
  .nav-toggle{display:block}
  .nav-cta .btn{display:none}
  .sec{padding:52px 0}
  .site-footer .f-grid{grid-template-columns:1fr;gap:24px}
}