/*
Theme Name: PaiDui Tech
Theme URI: https://www.paidui.com
Author: WorkBuddy
Author URI: https://www.paidui.com
Description: Overseas lead-generation theme for PaiDui Tech — faithful WordPress port of the static skeleton. Home, Products, Solutions, Cases, About and Contact with brand colors (#00A3AD / #FDD100).
Version: 1.3.0
Requires at least: 5.9
Tested up to: 6.7
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: paidui
*/

:root{
  --brand:#00A3AD; --brand-ink:#00818C; --brand-soft:#E5F2F2; --brand-bg:#F3F9F9;
  --accent:#FDD100; --accent-soft:#FFF4D6;
  --ink:#1f2430; --ink2:#5a5560; --ink3:#77737e; --line:#e0dcd4; --white:#ffffff;
  --maxw:1200px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:Inter,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  color:var(--ink2);background:var(--white);line-height:1.65;font-size:16px;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.wrap-pad{padding:72px 24px}

/* ---------- buttons ---------- */
.btn{display:inline-block;font-weight:700;font-size:15px;padding:13px 26px;border-radius:8px;
  border:2px solid transparent;cursor:pointer;transition:.18s;letter-spacing:.2px}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-ink)}
.btn-accent{background:var(--accent);color:var(--ink)}
.btn-accent:hover{filter:brightness(.96)}
.btn-ghost{background:transparent;color:var(--brand);border-color:var(--brand)}
.btn-ghost:hover{background:var(--brand-soft)}

/* ---------- header ---------- */
header.site{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);
  backdrop-filter: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:10px;font-weight:800;font-size:19px;color:var(--ink)}
.brand .logo{width:30px;height:30px;border-radius:7px;background:var(--brand);
  display:flex;align-items:center;justify-content:center;color:#fff;font-size:15px;font-weight:800}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{font-size:15px;color:var(--ink2);font-weight:500;transition:.15s}
.nav-links a:hover{color:var(--brand)}
.nav-cta{display:flex;align-items:center;gap:14px}
.lang{font-size:13px;color:var(--ink3);border:1px solid var(--line);padding:5px 10px;border-radius:6px}
.nav-cta select{font-size:13px;padding:6px 8px;border:1px solid var(--line);border-radius:6px;color:var(--ink2);background:#fff;cursor:pointer}

/* ---------- hero ---------- */
.hero{background:linear-gradient(180deg,var(--brand-bg) 0%,#fff 100%);padding:84px 0 72px}
.hero h1{font-size:46px;line-height:1.18;color:var(--ink);font-weight:800;letter-spacing:-.5px;max-width:760px}
.hero h1 .hl{color:var(--brand)}
.hero p.lead{font-size:19px;color:var(--ink2);margin:20px 0 32px;max-width:620px}
.hero .actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-meta{display:flex;gap:36px;margin-top:44px;flex-wrap:wrap}
.hero-meta .m b{display:block;font-size:28px;color:var(--brand);font-weight:800}
.hero-meta .m span{font-size:13px;color:var(--ink3)}

/* ---------- section ---------- */
.section-head{margin-bottom:34px}
.section-head .ey{font-size:13px;font-weight:700;letter-spacing:1.5px;color:var(--brand-ink);text-transform:uppercase}
.section-head h2{font-size:32px;color:var(--ink);font-weight:800;margin:8px 0 10px;letter-spacing:-.3px}
.section-head p{font-size:16px;max-width:640px}

/* ---------- product grid ---------- */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:26px 22px;transition:.18s}
.card:hover{border-color:var(--brand);box-shadow:0 8px 26px rgba(0,163,173,.1);transform:translateY(-3px)}
.card .ico{width:52px;height:52px;border-radius:12px;background:var(--brand-soft);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.card h3{font-size:18px;color:var(--ink);font-weight:700;margin-bottom:8px}
.card p{font-size:14px;color:var(--ink2)}
.card a.more{display:inline-block;margin-top:14px;font-size:14px;font-weight:700;color:var(--brand)}

/* ---------- solutions strip ---------- */
.strip{background:var(--brand-bg);border-radius:18px;padding:38px;display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.strip .s b{display:block;font-size:17px;color:var(--ink);margin-bottom:6px}
.strip .s span{font-size:14px;color:var(--ink2)}

/* ---------- cases ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.case{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden}
.case .ph{height:150px;background:linear-gradient(135deg,var(--brand-soft),var(--brand-bg))}
.case .body{padding:20px}
.case .body .tag{font-size:12px;color:var(--brand-ink);font-weight:700}
.case .body h3{font-size:17px;color:var(--ink);margin:6px 0 8px}
.case .body p{font-size:14px;color:var(--ink2)}

/* ---------- CTA band ---------- */
.cta-band{background:var(--brand);border-radius:18px;padding:48px;text-align:center;color:#fff}
.cta-band h2{font-size:30px;color:#fff;font-weight:800;margin-bottom:12px}
.cta-band p{color:rgba(255,255,255,.85);margin-bottom:24px;font-size:16px}

/* ---------- page hero (inner) ---------- */
.page-hero{background:var(--brand-bg);padding:56px 0 44px}
.page-hero h1{font-size:38px;color:var(--ink);font-weight:800;letter-spacing:-.3px}
.page-hero p{font-size:17px;color:var(--ink2);margin-top:12px;max-width:640px}

/* ---------- contact form ---------- */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:6px}
.field.full{grid-column:1/-1}
.field label{font-size:14px;font-weight:600;color:var(--ink)}
.field input,.field select,.field textarea{padding:12px 14px;border:1px solid var(--line);
  border-radius:8px;font-size:15px;font-family:inherit;color:var(--ink);background:#fff}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand)}
.form-note{font-size:13px;color:var(--ink3);margin-top:10px}
.contact-side{background:var(--brand-bg);border-radius:14px;padding:28px}
.contact-side h3{color:var(--ink);font-size:18px;margin-bottom:14px}
.contact-side p{font-size:14px;margin-bottom:10px}
.contact-side .row{display:flex;gap:10px;align-items:center;font-size:14px;color:var(--ink2)}

/* ---------- footer ---------- */
footer.site{background:var(--ink);color:#cfd2da;padding:56px 0 28px;margin-top:80px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:30px}
.foot-grid h4{color:#fff;font-size:14px;letter-spacing:.5px;margin-bottom:14px;text-transform:uppercase}
.foot-grid a{display:block;font-size:14px;color:#cfd2da;margin-bottom:9px;transition:.15s}
.foot-grid a:hover{color:var(--accent)}
.foot-brand p{font-size:14px;color:#a9adb8;margin-top:10px;max-width:280px}
.foot-bottom{border-top:1px solid #343a48;margin-top:36px;padding-top:18px;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:13px;color:#8b8f99}

/* ---------- placeholder banner ---------- */
.placeholder{background:repeating-linear-gradient(45deg,var(--brand-bg),var(--brand-bg) 14px,var(--brand-soft) 14px,var(--brand-soft) 28px);
  border:1px dashed var(--brand);border-radius:14px;padding:40px;text-align:center;color:var(--brand-ink);font-weight:600}

/* ---------- blog / archive fallback ---------- */
.entry-list{display:grid;gap:20px}
.entry-list article{border:1px solid var(--line);border-radius:14px;padding:24px}
.entry-list h2{font-size:20px;margin-bottom:8px}
.entry-list h2 a{color:var(--ink)}
.entry-list .meta{font-size:13px;color:var(--ink3);margin-bottom:10px}

/* ---------- responsive ---------- */
@media(max-width:980px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .strip{grid-template-columns:1fr}
  .grid-3{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
  .form-grid{grid-template-columns:1fr}
}
@media(max-width:680px){
  .nav-links{display:none}
  .hero h1{font-size:34px}
  .grid-4{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .wrap-pad{padding:48px 20px}
}

/* ---------- hero slider (carousel) ---------- */
.hero-slider{position:relative;overflow:hidden;background:var(--brand)}
.hero-slider .slides{position:relative;height:560px}
.hero-slider .slide{position:absolute;top:0;left:0;right:0;bottom:0;opacity:0;transition:opacity .7s ease;display:flex;align-items:center}
.hero-slider .slide.active{opacity:1;z-index:1}
.hero-slider .slide-inner{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 60px}
.hero-slider h1{font-size:46px;line-height:1.16;color:#fff;font-weight:800;letter-spacing:-.5px;max-width:780px;text-shadow:0 2px 20px rgba(0,0,0,.28)}
.hero-slider h1 .hl{color:var(--accent)}
.hero-slider p.lead{font-size:19px;color:rgba(255,255,255,.93);margin:20px 0 32px;max-width:620px;text-shadow:0 1px 12px rgba(0,0,0,.22)}
.hero-slider .actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-slider .hero-meta{display:flex;gap:40px;margin-top:44px;flex-wrap:wrap}
.hero-slider .hero-meta .m b{display:block;font-size:30px;color:var(--accent);font-weight:800}
.hero-slider .hero-meta .m span{font-size:13px;color:rgba(255,255,255,.85)}
.hero-slider .dots{position:absolute;bottom:22px;left:50%;transform:translateX(-50%);display:flex;gap:10px;z-index:5}
.hero-slider .dot{width:10px;height:10px;border-radius:5px;background:rgba(255,255,255,.5);cursor:pointer;transition:.25s;border:none;padding:0}
.hero-slider .dot.active{background:#fff;width:26px}
.hero-slider .arrow{position:absolute;top:50%;transform:translateY(-50%);width:44px;height:44px;border-radius:50%;background:rgba(255,255,255,.16);color:#fff;border:1px solid rgba(255,255,255,.25);font-size:18px;cursor:pointer;z-index:5;transition:.2s;line-height:1}
.hero-slider .arrow:hover{background:rgba(255,255,255,.32)}
.hero-slider .arrow.prev{left:18px}
.hero-slider .arrow.next{right:18px}
.btn-ghost-white{background:transparent;color:#fff;border-color:#fff}
.btn-ghost-white:hover{background:rgba(255,255,255,.15)}

/* slide backgrounds — gradient placeholders, replace with real photos via background-image */
.hero-slider .slide.bg-1{background:linear-gradient(120deg,#00818C 0%,#00A3AD 60%,#00B8C2 100%)}
.hero-slider .slide.bg-2{background:linear-gradient(120deg,#1f2430 0%,#0e5f66 55%,#00818C 100%)}
.hero-slider .slide.bg-3{background:linear-gradient(120deg,#005e63 0%,#00818C 50%,#00A3AD 100%)}

@media(max-width:680px){
  .hero-slider .slides{height:600px}
  .hero-slider h1{font-size:32px}
  .hero-slider .slide-inner{padding:0 22px}
  .hero-slider .arrow{display:none}
}

/* ---------- product listing (CPT) ---------- */
.filter{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:26px}
.filter a{padding:8px 16px;border:1px solid var(--line);border-radius:20px;font-size:14px;color:var(--ink2);transition:.15s}
.filter a:hover{border-color:var(--brand);color:var(--brand)}
.filter a.active{background:var(--brand);color:#fff;border-color:var(--brand)}

.product-card{display:flex;flex-direction:column}
.product-card .ph{height:200px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:center;padding:16px;overflow:hidden}
.product-card .ph img{max-width:100%;max-height:100%;width:auto;height:auto}
.product-card .body{padding:18px 20px;display:flex;flex-direction:column;flex:1}
.product-card .body h3{font-size:17px;color:var(--ink);margin-bottom:8px}
.product-card .body p{font-size:14px;color:var(--ink2);flex:1}

/* ---------- single product ---------- */
.product-detail{display:grid;grid-template-columns:1fr 1.2fr;gap:36px;align-items:start}
.product-detail .pd-media img{width:100%;height:auto;border-radius:12px}
.product-detail .pd-body h2,.product-detail .pd-body h3{color:var(--ink);margin:16px 0 8px}
.product-detail .pd-body p{color:var(--ink2);margin:10px 0}
.product-detail .pd-body ul{margin:8px 0 8px 20px;color:var(--ink2)}
@media(max-width:780px){.product-detail{grid-template-columns:1fr}}

/* ---------- case cards (CPT) ---------- */
.case a{display:block;height:100%}
.case .ph img{width:100%;height:150px;object-fit:cover}

/* ---------- prose (About / rich text pages) ---------- */
.prose{max-width:760px;font-size:16px;line-height:1.8;color:var(--ink2)}
.prose h2,.prose h3{color:var(--ink);margin:22px 0 10px;line-height:1.3}
.prose p{margin:12px 0}
.prose ul,.prose ol{margin:10px 0 10px 22px}
.prose li{margin:6px 0}
.prose a{color:var(--brand)}
.prose img{border-radius:10px}